2005-04-16 15:20:36 -07:00
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2005-05-05 16:16:16 -07:00
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2005-04-16 15:20:36 -07:00
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2016-12-24 11:46:01 -08:00
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2005-04-16 15:20:36 -07:00
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2006-01-11 12:17:47 -08:00
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2005-04-16 15:20:36 -07:00
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2017-02-02 19:15:33 +01:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:54 -07:00
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2005-04-16 15:20:36 -07:00
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include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h
percpu.h is included by sched.h and module.h and thus ends up being
included when building most .c files. percpu.h includes slab.h which
in turn includes gfp.h making everything defined by the two files
universally available and complicating inclusion dependencies.
percpu.h -> slab.h dependency is about to be removed. Prepare for
this change by updating users of gfp and slab facilities include those
headers directly instead of assuming availability. As this conversion
needs to touch large number of source files, the following script is
used as the basis of conversion.
http://userweb.kernel.org/~tj/misc/slabh-sweep.py
The script does the followings.
* Scan files for gfp and slab usages and update includes such that
only the necessary includes are there. ie. if only gfp is used,
gfp.h, if slab is used, slab.h.
* When the script inserts a new include, it looks at the include
blocks and try to put the new include such that its order conforms
to its surrounding. It's put in the include block which contains
core kernel includes, in the same order that the rest are ordered -
alphabetical, Christmas tree, rev-Xmas-tree or at the end if there
doesn't seem to be any matching order.
* If the script can't find a place to put a new include (mostly
because the file doesn't have fitting include block), it prints out
an error message indicating which .h file needs to be added to the
file.
The conversion was done in the following steps.
1. The initial automatic conversion of all .c files updated slightly
over 4000 files, deleting around 700 includes and adding ~480 gfp.h
and ~3000 slab.h inclusions. The script emitted errors for ~400
files.
2. Each error was manually checked. Some didn't need the inclusion,
some needed manual addition while adding it to implementation .h or
embedding .c file was more appropriate for others. This step added
inclusions to around 150 files.
3. The script was run again and the output was compared to the edits
from #2 to make sure no file was left behind.
4. Several build tests were done and a couple of problems were fixed.
e.g. lib/decompress_*.c used malloc/free() wrappers around slab
APIs requiring slab.h to be added manually.
5. The script was run on all .h files but without automatically
editing them as sprinkling gfp.h and slab.h inclusions around .h
files could easily lead to inclusion dependency hell. Most gfp.h
inclusion directives were ignored as stuff from gfp.h was usually
wildly available and often used in preprocessor macros. Each
slab.h inclusion directive was examined and added manually as
necessary.
6. percpu.h was updated not to include slab.h.
7. Build test were done on the following configurations and failures
were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my
distributed build env didn't work with gcov compiles) and a few
more options had to be turned off depending on archs to make things
build (like ipr on powerpc/64 which failed due to missing writeq).
* x86 and x86_64 UP and SMP allmodconfig and a custom test config.
* powerpc and powerpc64 SMP allmodconfig
* sparc and sparc64 SMP allmodconfig
* ia64 SMP allmodconfig
* s390 SMP allmodconfig
* alpha SMP allmodconfig
* um on x86_64 SMP allmodconfig
8. percpu.h modifications were reverted so that it could be applied as
a separate patch and serve as bisection point.
Given the fact that I had only a couple of failures from tests on step
6, I'm fairly confident about the coverage of this conversion patch.
If there is a breakage, it's likely to be something in one of the arch
headers which should be easily discoverable easily on most builds of
the specific arch.
Signed-off-by: Tejun Heo <tj@kernel.org>
Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
2010-03-24 17:04:11 +09:00
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2011-02-18 12:42:28 -08:00
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2005-04-16 15:20:36 -07:00
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2012-10-25 22:28:52 +00:00
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2005-04-16 15:20:36 -07:00
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2005-12-27 02:43:12 -02:00
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2005-04-16 15:20:36 -07:00
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2007-03-22 11:55:17 -07:00
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2007-12-16 13:31:47 -08:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2008-01-31 17:17:31 -08:00
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2007-06-04 23:34:44 -07:00
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2010-02-14 03:25:51 +00:00
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2013-08-06 19:03:15 +01:00
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2007-06-04 23:34:44 -07:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:34:44 -07:00
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2010-02-14 03:25:51 +00:00
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2013-08-06 19:03:15 +01:00
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2007-06-04 23:34:44 -07:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:32:16 -08:00
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2007-06-04 23:34:44 -07:00
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2007-06-05 12:38:30 -07:00
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2006-08-04 23:03:53 -07:00
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2006-08-26 20:13:18 -07:00
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2013-01-24 09:41:41 +00:00
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2013-12-08 12:16:10 +01:00
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2006-08-04 23:03:53 -07:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:42:28 -08:00
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2015-03-18 14:05:33 -07:00
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2011-02-18 12:42:28 -08:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:42:28 -08:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:42:28 -08:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:42:28 -08:00
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2014-05-06 11:15:56 -07:00
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2011-02-18 12:42:28 -08:00
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2014-05-06 11:15:56 -07:00
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2011-02-18 12:42:28 -08:00
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2011-02-18 12:43:09 -08:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:43:09 -08:00
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hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 17:06:00 -08:00
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2011-03-03 11:24:19 -08:00
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2012-08-03 21:06:50 +00:00
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2011-02-18 12:43:09 -08:00
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2011-03-22 21:56:23 -07:00
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2011-02-18 12:43:09 -08:00
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2006-08-15 00:33:59 -07:00
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2005-04-16 15:20:36 -07:00
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2017-06-08 13:12:14 -07:00
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2005-04-16 15:20:36 -07:00
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2014-07-25 15:25:08 -07:00
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2007-12-11 02:17:40 -08:00
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2014-07-25 15:25:08 -07:00
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2007-12-11 02:17:40 -08:00
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2014-07-25 15:25:08 -07:00
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2007-12-11 02:17:40 -08:00
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2012-08-03 21:06:50 +00:00
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2007-12-11 02:17:40 -08:00
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2005-04-16 15:20:36 -07:00
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2008-10-28 13:25:09 -07:00
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2005-04-16 15:20:36 -07:00
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2012-08-03 21:06:50 +00:00
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2005-04-16 15:20:36 -07:00
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2008-07-25 21:43:18 -07:00
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2013-06-07 08:48:57 -07:00
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2005-04-16 15:20:36 -07:00
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2012-05-15 14:11:54 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:36:06 -07:00
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2005-04-16 15:20:36 -07:00
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2014-07-25 15:25:08 -07:00
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2005-04-16 15:20:36 -07:00
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2006-07-21 14:51:30 -07:00
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2005-04-16 15:20:36 -07:00
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2008-03-25 21:47:49 +09:00
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2007-12-16 13:32:16 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2008-06-19 16:15:47 -07:00
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2005-04-16 15:20:36 -07:00
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2007-01-04 12:31:14 -08:00
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2017-06-30 13:08:03 +03:00
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2005-04-16 15:20:36 -07:00
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2014-07-25 15:25:08 -07:00
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2005-04-16 15:20:36 -07:00
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2007-01-09 14:38:31 -08:00
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2007-01-04 12:31:14 -08:00
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2012-01-12 04:41:32 +00:00
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2007-01-09 14:38:31 -08:00
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2014-07-25 15:25:08 -07:00
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2005-04-16 15:20:36 -07:00
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2011-08-01 16:19:00 +00:00
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2005-04-16 15:20:36 -07:00
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2007-12-11 02:17:40 -08:00
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2005-04-16 15:20:36 -07:00
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2006-09-26 22:13:35 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-15 00:33:59 -07:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2005-05-29 20:23:46 -07:00
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2005-11-22 14:47:37 -08:00
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2005-04-16 15:20:36 -07:00
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2016-03-13 23:28:00 -04:00
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2007-02-09 23:24:47 +09:00
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2005-05-29 20:23:46 -07:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:47 +09:00
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2005-11-22 14:47:37 -08:00
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2005-04-16 15:20:36 -07:00
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2005-11-22 14:47:37 -08:00
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2005-04-16 15:20:36 -07:00
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2005-11-22 14:47:37 -08:00
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2011-02-18 12:42:28 -08:00
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2005-05-29 20:23:46 -07:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 20:12:54 +00:00
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2005-05-29 20:23:46 -07:00
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2005-04-16 15:20:36 -07:00
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2011-03-19 12:13:52 +00:00
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2016-03-13 23:28:00 -04:00
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2005-04-16 15:20:36 -07:00
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2011-02-18 12:42:28 -08:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 20:12:54 +00:00
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|
[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
|
|
|
|
2005-11-22 14:47:37 -08:00
|
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2011-03-19 12:13:54 +00:00
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2005-11-22 14:47:37 -08:00
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2012-09-07 20:12:54 +00:00
|
|
|
|
[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2011-03-19 12:13:54 +00:00
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2005-11-22 14:47:37 -08:00
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2007-06-07 18:35:38 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-15 00:33:59 -07:00
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2013-01-24 09:41:41 +00:00
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2006-08-15 00:33:59 -07:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2017-06-08 13:12:14 -07:00
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2005-04-16 15:20:36 -07:00
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2017-06-08 13:12:14 -07:00
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2005-04-16 15:20:36 -07:00
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2014-01-11 07:15:59 -05:00
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2005-04-16 15:20:36 -07:00
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2011-02-18 12:42:28 -08:00
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2013-01-24 09:41:41 +00:00
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2014-01-22 12:23:32 +05:30
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 20:12:54 +00:00
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2005-04-16 15:20:36 -07:00
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2006-08-15 00:33:59 -07:00
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2005-04-16 15:20:36 -07:00
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2005-10-03 14:35:55 -07:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:36:06 -07:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:36:06 -07:00
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2013-12-07 19:26:56 +01:00
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2005-04-16 15:20:36 -07:00
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2008-07-25 21:43:18 -07:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:45:43 -08:00
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2005-04-16 15:20:36 -07:00
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2010-10-19 00:39:26 +00:00
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2008-01-21 17:32:38 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-01 19:23:04 +00:00
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2005-04-16 15:20:36 -07:00
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2010-10-19 00:39:26 +00:00
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2009-11-01 19:23:04 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2006-09-26 22:17:09 -07:00
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2005-04-16 15:20:36 -07:00
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2015-02-25 09:58:35 -08:00
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ipv4, ipv6: kill ip_mc_{join, leave}_group and ipv6_sock_mc_{join, drop}
in favor of their inner __ ones, which doesn't grab rtnl.
As these functions need to operate on a locked socket, we can't be
grabbing rtnl by then. It's too late and doing so causes reversed
locking.
So this patch:
- move rtnl handling to callers instead while already fixing some
reversed locking situations, like on vxlan and ipvs code.
- renames __ ones to not have the __ mark:
__ip_mc_{join,leave}_group -> ip_mc_{join,leave}_group
__ipv6_sock_mc_{join,drop} -> ipv6_sock_mc_{join,drop}
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-18 14:50:43 -03:00
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2015-02-25 09:58:35 -08:00
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ipv4, ipv6: kill ip_mc_{join, leave}_group and ipv6_sock_mc_{join, drop}
in favor of their inner __ ones, which doesn't grab rtnl.
As these functions need to operate on a locked socket, we can't be
grabbing rtnl by then. It's too late and doing so causes reversed
locking.
So this patch:
- move rtnl handling to callers instead while already fixing some
reversed locking situations, like on vxlan and ipvs code.
- renames __ ones to not have the __ mark:
__ip_mc_{join,leave}_group -> ip_mc_{join,leave}_group
__ipv6_sock_mc_{join,drop} -> ipv6_sock_mc_{join,drop}
Signed-off-by: Marcelo Ricardo Leitner <marcelo.leitner@gmail.com>
Acked-by: Hannes Frederic Sowa <hannes@stressinduktion.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2015-03-18 14:50:43 -03:00
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2015-02-25 09:58:35 -08:00
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2017-04-16 09:48:24 -07:00
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2005-04-16 15:20:36 -07:00
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2008-03-26 02:26:21 +09:00
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2006-08-04 23:04:17 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:17 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:17 -07:00
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2005-04-16 15:20:36 -07:00
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2017-04-12 14:34:07 +02:00
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2017-04-16 09:48:24 -07:00
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2006-08-04 23:04:17 -07:00
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2008-01-21 17:32:38 -08:00
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2015-04-03 09:17:26 +01:00
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2006-08-04 23:04:17 -07:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:17 -07:00
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2015-03-29 16:59:26 +02:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:17 -07:00
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2015-03-29 16:59:26 +02:00
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2006-08-04 23:04:17 -07:00
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2015-02-25 09:58:35 -08:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:17 -07:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 23:39:39 +00:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 23:39:39 +00:00
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hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 17:06:00 -08:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 23:39:39 +00:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 23:39:39 +00:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 23:39:39 +00:00
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2013-01-24 09:41:41 +00:00
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2014-01-22 12:23:32 +05:30
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:03:53 -07:00
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2005-04-16 15:20:36 -07:00
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2008-01-31 18:47:00 -08:00
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2005-04-16 15:20:36 -07:00
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2017-04-12 14:34:07 +02:00
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2006-08-04 23:03:53 -07:00
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2006-08-04 23:03:53 -07:00
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2008-01-31 18:47:00 -08:00
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2015-04-03 09:17:26 +01:00
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2006-08-04 23:03:53 -07:00
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2005-04-16 15:20:36 -07:00
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2008-01-31 18:47:40 -08:00
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2008-01-31 18:47:00 -08:00
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2015-04-03 09:17:26 +01:00
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2006-08-04 23:03:53 -07:00
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2006-08-04 23:03:53 -07:00
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2008-01-31 18:47:00 -08:00
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2015-04-03 09:17:26 +01:00
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2007-06-04 23:36:06 -07:00
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2006-08-04 23:03:53 -07:00
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2015-04-03 09:17:26 +01:00
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2006-08-04 23:03:53 -07:00
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2007-12-07 23:55:43 -08:00
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2013-12-07 19:26:56 +01:00
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2006-08-04 23:03:53 -07:00
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2015-04-03 09:17:26 +01:00
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2006-08-04 23:03:53 -07:00
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2005-04-16 15:20:36 -07:00
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2011-02-18 12:42:28 -08:00
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2005-04-16 15:20:36 -07:00
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2013-12-08 12:16:10 +01:00
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2006-08-04 23:03:53 -07:00
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2015-03-29 16:59:26 +02:00
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2006-08-04 23:03:53 -07:00
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2015-03-29 16:59:26 +02:00
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2006-08-04 23:03:53 -07:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2013-08-02 11:32:43 +02:00
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2013-01-24 09:41:41 +00:00
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2006-08-04 23:03:53 -07:00
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2013-08-02 11:32:43 +02:00
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2006-08-04 23:03:53 -07:00
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2013-01-24 09:41:41 +00:00
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2017-04-16 09:48:24 -07:00
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2006-08-04 23:03:53 -07:00
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2008-03-26 02:26:21 +09:00
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2006-08-04 23:03:53 -07:00
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2013-01-24 09:41:41 +00:00
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2006-08-04 23:03:53 -07:00
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2013-01-24 09:41:41 +00:00
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2006-08-04 23:03:53 -07:00
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2013-01-24 09:41:41 +00:00
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2014-05-16 20:46:58 -07:00
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2013-01-24 09:41:41 +00:00
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2015-02-25 09:58:35 -08:00
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2013-01-24 09:41:41 +00:00
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2013-04-04 08:33:00 +00:00
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2013-04-04 23:39:38 +00:00
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2014-01-22 12:23:32 +05:30
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2013-04-04 08:33:00 +00:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2012-08-03 21:06:50 +00:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:45:43 -08:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2006-11-14 20:51:49 -08:00
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2005-04-16 15:20:36 -07:00
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2006-11-14 20:51:49 -08:00
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2006-11-14 20:51:49 -08:00
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2006-11-14 20:51:49 -08:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2008-02-28 20:51:43 -08:00
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2005-04-16 15:20:36 -07:00
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2008-02-28 20:51:43 -08:00
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2007-03-08 20:44:43 -08:00
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2005-04-16 15:20:36 -07:00
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2012-09-20 22:37:25 +00:00
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net: Allow userns root to control ipv4
Allow an unpriviled user who has created a user namespace, and then
created a network namespace to effectively use the new network
namespace, by reducing capable(CAP_NET_ADMIN) and
capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns,
CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls.
Settings that merely control a single network device are allowed.
Either the network device is a logical network device where
restrictions make no difference or the network device is hardware NIC
that has been explicity moved from the initial network namespace.
In general policy and network stack state changes are allowed
while resource control is left unchanged.
Allow creating raw sockets.
Allow the SIOCSARP ioctl to control the arp cache.
Allow the SIOCSIFFLAG ioctl to allow setting network device flags.
Allow the SIOCSIFADDR ioctl to allow setting a netdevice ipv4 address.
Allow the SIOCSIFBRDADDR ioctl to allow setting a netdevice ipv4 broadcast address.
Allow the SIOCSIFDSTADDR ioctl to allow setting a netdevice ipv4 destination address.
Allow the SIOCSIFNETMASK ioctl to allow setting a netdevice ipv4 netmask.
Allow the SIOCADDRT and SIOCDELRT ioctls to allow adding and deleting ipv4 routes.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting gre tunnels.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting ipip tunnels.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting ipsec virtual tunnel interfaces.
Allow setting the MRT_INIT, MRT_DONE, MRT_ADD_VIF, MRT_DEL_VIF, MRT_ADD_MFC,
MRT_DEL_MFC, MRT_ASSERT, MRT_PIM, MRT_TABLE socket options on multicast routing
sockets.
Allow setting and receiving IPOPT_CIPSO, IP_OPT_SEC, IP_OPT_SID and
arbitrary ip options.
Allow setting IP_SEC_POLICY/IP_XFRM_POLICY ipv4 socket option.
Allow setting the IP_TRANSPARENT ipv4 socket option.
Allow setting the TCP_REPAIR socket option.
Allow setting the TCP_CONGESTION socket option.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-16 03:03:05 +00:00
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2005-04-16 15:20:36 -07:00
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2012-09-20 22:37:25 +00:00
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net: Allow userns root to control ipv4
Allow an unpriviled user who has created a user namespace, and then
created a network namespace to effectively use the new network
namespace, by reducing capable(CAP_NET_ADMIN) and
capable(CAP_NET_RAW) calls to be ns_capable(net->user_ns,
CAP_NET_ADMIN), or capable(net->user_ns, CAP_NET_RAW) calls.
Settings that merely control a single network device are allowed.
Either the network device is a logical network device where
restrictions make no difference or the network device is hardware NIC
that has been explicity moved from the initial network namespace.
In general policy and network stack state changes are allowed
while resource control is left unchanged.
Allow creating raw sockets.
Allow the SIOCSARP ioctl to control the arp cache.
Allow the SIOCSIFFLAG ioctl to allow setting network device flags.
Allow the SIOCSIFADDR ioctl to allow setting a netdevice ipv4 address.
Allow the SIOCSIFBRDADDR ioctl to allow setting a netdevice ipv4 broadcast address.
Allow the SIOCSIFDSTADDR ioctl to allow setting a netdevice ipv4 destination address.
Allow the SIOCSIFNETMASK ioctl to allow setting a netdevice ipv4 netmask.
Allow the SIOCADDRT and SIOCDELRT ioctls to allow adding and deleting ipv4 routes.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting gre tunnels.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting ipip tunnels.
Allow the SIOCADDTUNNEL, SIOCCHGTUNNEL and SIOCDELTUNNEL ioctls for
adding, changing and deleting ipsec virtual tunnel interfaces.
Allow setting the MRT_INIT, MRT_DONE, MRT_ADD_VIF, MRT_DEL_VIF, MRT_ADD_MFC,
MRT_DEL_MFC, MRT_ASSERT, MRT_PIM, MRT_TABLE socket options on multicast routing
sockets.
Allow setting and receiving IPOPT_CIPSO, IP_OPT_SEC, IP_OPT_SID and
arbitrary ip options.
Allow setting IP_SEC_POLICY/IP_XFRM_POLICY ipv4 socket option.
Allow setting the IP_TRANSPARENT ipv4 socket option.
Allow setting the TCP_REPAIR socket option.
Allow setting the TCP_CONGESTION socket option.
Signed-off-by: "Eric W. Biederman" <ebiederm@xmission.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2012-11-16 03:03:05 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2011-03-09 13:27:16 -08:00
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2005-04-16 15:20:36 -07:00
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2007-03-08 20:44:43 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2013-01-05 11:19:24 +00:00
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2005-04-16 15:20:36 -07:00
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2008-02-26 18:17:53 -08:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2006-09-28 18:00:55 -07:00
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2005-04-16 15:20:36 -07:00
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2005-10-21 22:09:16 -05:00
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2005-04-16 15:20:36 -07:00
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2005-10-03 14:35:55 -07:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2013-07-29 22:15:19 +03:00
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2005-04-16 15:20:36 -07:00
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2017-03-10 12:38:47 +08:00
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2006-09-26 21:27:54 -07:00
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2005-04-16 15:20:36 -07:00
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2006-09-26 21:27:54 -07:00
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2005-04-16 15:20:36 -07:00
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2008-03-25 21:47:49 +09:00
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2016-02-24 11:47:02 -08:00
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2005-04-16 15:20:36 -07:00
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2005-10-03 14:35:55 -07:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 05:43:23 -08:00
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2009-11-04 22:05:10 -08:00
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2016-02-24 11:47:02 -08:00
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2005-04-16 15:20:36 -07:00
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2016-02-24 11:47:03 -08:00
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2017-03-10 12:38:47 +08:00
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2016-02-24 11:47:03 -08:00
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2005-04-16 15:20:36 -07:00
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2015-02-14 13:47:54 -05:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 05:43:23 -08:00
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2016-02-24 11:47:02 -08:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2017-03-10 12:38:47 +08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 05:43:23 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2006-09-26 22:17:09 -07:00
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2005-04-16 15:20:36 -07:00
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2006-09-28 18:00:55 -07:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2013-12-10 15:02:40 +01:00
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2005-04-16 15:20:36 -07:00
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2013-12-10 15:02:40 +01:00
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2008-01-14 23:05:55 -08:00
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2005-04-16 15:20:36 -07:00
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2006-09-26 22:17:09 -07:00
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2008-01-14 23:05:55 -08:00
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2005-04-16 15:20:36 -07:00
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2015-04-03 09:17:27 +01:00
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2008-01-14 23:05:55 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 05:43:23 -08:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2012-03-22 16:14:29 +00:00
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2005-04-16 15:20:36 -07:00
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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[PATCH] Notifier chain update: API changes
The kernel's implementation of notifier chains is unsafe. There is no
protection against entries being added to or removed from a chain while the
chain is in use. The issues were discussed in this thread:
http://marc.theaimsgroup.com/?l=linux-kernel&m=113018709002036&w=2
We noticed that notifier chains in the kernel fall into two basic usage
classes:
"Blocking" chains are always called from a process context
and the callout routines are allowed to sleep;
"Atomic" chains can be called from an atomic context and
the callout routines are not allowed to sleep.
We decided to codify this distinction and make it part of the API. Therefore
this set of patches introduces three new, parallel APIs: one for blocking
notifiers, one for atomic notifiers, and one for "raw" notifiers (which is
really just the old API under a new name). New kinds of data structures are
used for the heads of the chains, and new routines are defined for
registration, unregistration, and calling a chain. The three APIs are
explained in include/linux/notifier.h and their implementation is in
kernel/sys.c.
With atomic and blocking chains, the implementation guarantees that the chain
links will not be corrupted and that chain callers will not get messed up by
entries being added or removed. For raw chains the implementation provides no
guarantees at all; users of this API must provide their own protections. (The
idea was that situations may come up where the assumptions of the atomic and
blocking APIs are not appropriate, so it should be possible for users to
handle these things in their own way.)
There are some limitations, which should not be too hard to live with. For
atomic/blocking chains, registration and unregistration must always be done in
a process context since the chain is protected by a mutex/rwsem. Also, a
callout routine for a non-raw chain must not try to register or unregister
entries on its own chain. (This did happen in a couple of places and the code
had to be changed to avoid it.)
Since atomic chains may be called from within an NMI handler, they cannot use
spinlocks for synchronization. Instead we use RCU. The overhead falls almost
entirely in the unregister routine, which is okay since unregistration is much
less frequent that calling a chain.
Here is the list of chains that we adjusted and their classifications. None
of them use the raw API, so for the moment it is only a placeholder.
ATOMIC CHAINS
-------------
arch/i386/kernel/traps.c: i386die_chain
arch/ia64/kernel/traps.c: ia64die_chain
arch/powerpc/kernel/traps.c: powerpc_die_chain
arch/sparc64/kernel/traps.c: sparc64die_chain
arch/x86_64/kernel/traps.c: die_chain
drivers/char/ipmi/ipmi_si_intf.c: xaction_notifier_list
kernel/panic.c: panic_notifier_list
kernel/profile.c: task_free_notifier
net/bluetooth/hci_core.c: hci_notifier
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_chain
net/ipv4/netfilter/ip_conntrack_core.c: ip_conntrack_expect_chain
net/ipv6/addrconf.c: inet6addr_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_chain
net/netfilter/nf_conntrack_core.c: nf_conntrack_expect_chain
net/netlink/af_netlink.c: netlink_chain
BLOCKING CHAINS
---------------
arch/powerpc/platforms/pseries/reconfig.c: pSeries_reconfig_chain
arch/s390/kernel/process.c: idle_chain
arch/x86_64/kernel/process.c idle_notifier
drivers/base/memory.c: memory_chain
drivers/cpufreq/cpufreq.c cpufreq_policy_notifier_list
drivers/cpufreq/cpufreq.c cpufreq_transition_notifier_list
drivers/macintosh/adb.c: adb_client_list
drivers/macintosh/via-pmu.c sleep_notifier_list
drivers/macintosh/via-pmu68k.c sleep_notifier_list
drivers/macintosh/windfarm_core.c wf_client_list
drivers/usb/core/notify.c usb_notifier_list
drivers/video/fbmem.c fb_notifier_list
kernel/cpu.c cpu_chain
kernel/module.c module_notify_list
kernel/profile.c munmap_notifier
kernel/profile.c task_exit_notifier
kernel/sys.c reboot_notifier_list
net/core/dev.c netdev_chain
net/decnet/dn_dev.c: dnaddr_chain
net/ipv4/devinet.c: inetaddr_chain
It's possible that some of these classifications are wrong. If they are,
please let us know or submit a patch to fix them. Note that any chain that
gets called very frequently should be atomic, because the rwsem read-locking
used for blocking chains is very likely to incur cache misses on SMP systems.
(However, if the chain's callout routines may sleep then the chain cannot be
atomic.)
The patch set was written by Alan Stern and Chandra Seetharaman, incorporating
material written by Keith Owens and suggestions from Paul McKenney and Andrew
Morton.
[jes@sgi.com: restructure the notifier chain initialization macros]
Signed-off-by: Alan Stern <stern@rowland.harvard.edu>
Signed-off-by: Chandra Seetharaman <sekharan@us.ibm.com>
Signed-off-by: Jes Sorensen <jes@sgi.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-27 01:16:30 -08:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2017-06-08 13:12:14 -07:00
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2009-11-04 22:05:10 -08:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2008-06-10 15:40:04 -07:00
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2008-01-04 00:56:25 -08:00
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2015-04-03 09:17:26 +01:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2009-11-04 22:05:10 -08:00
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2007-02-09 23:24:47 +09:00
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2009-11-04 22:05:10 -08:00
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2007-02-09 23:24:47 +09:00
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2008-06-10 15:40:04 -07:00
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2007-02-09 23:24:47 +09:00
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2005-04-16 15:20:36 -07:00
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2012-08-03 21:06:50 +00:00
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2008-09-02 17:28:58 -07:00
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2017-12-11 07:17:39 -08:00
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2008-09-02 17:28:58 -07:00
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2011-02-11 07:44:16 +00:00
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2011-07-24 13:09:30 +00:00
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2011-02-11 07:44:16 +00:00
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2011-07-24 13:09:30 +00:00
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2011-02-11 07:44:16 +00:00
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2005-04-16 15:20:36 -07:00
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2013-05-28 01:30:21 +00:00
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2012-08-22 21:50:59 +00:00
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2005-04-16 15:20:36 -07:00
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2007-02-22 01:53:47 +09:00
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2005-04-16 15:20:36 -07:00
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2014-07-25 15:25:08 -07:00
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2007-09-26 22:10:06 -07:00
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2007-06-04 23:34:44 -07:00
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2007-02-22 01:53:47 +09:00
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2008-09-02 17:28:58 -07:00
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2005-04-16 15:20:36 -07:00
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2012-05-15 14:11:54 +00:00
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2011-08-01 16:19:00 +00:00
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2005-04-16 15:20:36 -07:00
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2008-09-02 17:28:58 -07:00
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2005-04-16 15:20:36 -07:00
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2007-09-26 22:10:06 -07:00
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2009-11-04 22:05:10 -08:00
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2011-02-18 12:42:28 -08:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2014-01-07 15:55:45 +01:00
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2005-04-16 15:20:36 -07:00
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2009-02-01 01:04:33 -08:00
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2011-02-11 07:44:16 +00:00
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2009-10-07 03:18:17 -07:00
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2011-02-11 07:44:16 +00:00
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2005-04-16 15:20:36 -07:00
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2010-03-10 10:28:56 +00:00
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2009-09-15 02:37:40 -07:00
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2010-03-10 10:28:56 +00:00
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2009-09-15 02:37:40 -07:00
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2005-04-16 15:20:36 -07:00
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2008-09-02 17:28:58 -07:00
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2005-04-16 15:20:36 -07:00
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2008-09-02 17:28:58 -07:00
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2005-04-16 15:20:36 -07:00
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2007-12-11 02:17:40 -08:00
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2007-12-02 00:55:54 +11:00
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2005-04-16 15:20:36 -07:00
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2008-11-03 02:48:48 -08:00
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2005-04-16 15:20:36 -07:00
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2012-08-03 21:06:50 +00:00
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2006-11-10 14:10:15 -08:00
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2013-12-08 12:16:10 +01:00
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2014-02-05 08:38:25 +01:00
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2006-11-10 14:10:15 -08:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 20:12:54 +00:00
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2015-04-03 09:17:26 +01:00
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2007-01-31 23:16:40 -08:00
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2006-08-04 23:04:36 -07:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2005-04-16 15:20:36 -07:00
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2013-01-24 09:41:41 +00:00
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2012-04-01 20:39:02 -04:00
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2015-03-29 16:59:25 +02:00
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2012-04-01 20:39:02 -04:00
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2015-03-29 16:59:25 +02:00
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2012-04-01 20:39:02 -04:00
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2015-03-29 16:59:25 +02:00
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2012-04-01 20:39:02 -04:00
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2013-01-24 09:41:41 +00:00
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2013-12-08 12:16:10 +01:00
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2013-01-24 09:41:41 +00:00
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2012-04-01 20:39:02 -04:00
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2006-08-04 23:04:36 -07:00
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2015-01-16 22:09:00 +01:00
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2006-08-04 23:04:36 -07:00
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2007-01-31 23:16:40 -08:00
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2005-04-16 15:20:36 -07:00
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2008-03-26 02:26:21 +09:00
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2009-11-12 07:44:25 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-12 07:44:25 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-12 07:44:25 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-12 07:44:25 +00:00
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2013-03-22 06:28:42 +00:00
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hlist: drop the node parameter from iterators
I'm not sure why, but the hlist for each entry iterators were conceived
list_for_each_entry(pos, head, member)
The hlist ones were greedy and wanted an extra parameter:
hlist_for_each_entry(tpos, pos, head, member)
Why did they need an extra pos parameter? I'm not quite sure. Not only
they don't really need it, it also prevents the iterator from looking
exactly like the list iterator, which is unfortunate.
Besides the semantic patch, there was some manual work required:
- Fix up the actual hlist iterators in linux/list.h
- Fix up the declaration of other iterators based on the hlist ones.
- A very small amount of places were using the 'node' parameter, this
was modified to use 'obj->member' instead.
- Coccinelle didn't handle the hlist_for_each_entry_safe iterator
properly, so those had to be fixed up manually.
The semantic patch which is mostly the work of Peter Senna Tschudin is here:
@@
iterator name hlist_for_each_entry, hlist_for_each_entry_continue, hlist_for_each_entry_from, hlist_for_each_entry_rcu, hlist_for_each_entry_rcu_bh, hlist_for_each_entry_continue_rcu_bh, for_each_busy_worker, ax25_uid_for_each, ax25_for_each, inet_bind_bucket_for_each, sctp_for_each_hentry, sk_for_each, sk_for_each_rcu, sk_for_each_from, sk_for_each_safe, sk_for_each_bound, hlist_for_each_entry_safe, hlist_for_each_entry_continue_rcu, nr_neigh_for_each, nr_neigh_for_each_safe, nr_node_for_each, nr_node_for_each_safe, for_each_gfn_indirect_valid_sp, for_each_gfn_sp, for_each_host;
type T;
expression a,c,d,e;
identifier b;
statement S;
@@
-T b;
<+... when != b
(
hlist_for_each_entry(a,
- b,
c, d) S
|
hlist_for_each_entry_continue(a,
- b,
c) S
|
hlist_for_each_entry_from(a,
- b,
c) S
|
hlist_for_each_entry_rcu(a,
- b,
c, d) S
|
hlist_for_each_entry_rcu_bh(a,
- b,
c, d) S
|
hlist_for_each_entry_continue_rcu_bh(a,
- b,
c) S
|
for_each_busy_worker(a, c,
- b,
d) S
|
ax25_uid_for_each(a,
- b,
c) S
|
ax25_for_each(a,
- b,
c) S
|
inet_bind_bucket_for_each(a,
- b,
c) S
|
sctp_for_each_hentry(a,
- b,
c) S
|
sk_for_each(a,
- b,
c) S
|
sk_for_each_rcu(a,
- b,
c) S
|
sk_for_each_from
-(a, b)
+(a)
S
+ sk_for_each_from(a) S
|
sk_for_each_safe(a,
- b,
c, d) S
|
sk_for_each_bound(a,
- b,
c) S
|
hlist_for_each_entry_safe(a,
- b,
c, d, e) S
|
hlist_for_each_entry_continue_rcu(a,
- b,
c) S
|
nr_neigh_for_each(a,
- b,
c) S
|
nr_neigh_for_each_safe(a,
- b,
c, d) S
|
nr_node_for_each(a,
- b,
c) S
|
nr_node_for_each_safe(a,
- b,
c, d) S
|
- for_each_gfn_sp(a, c, d, b) S
+ for_each_gfn_sp(a, c, d) S
|
- for_each_gfn_indirect_valid_sp(a, c, d, b) S
+ for_each_gfn_indirect_valid_sp(a, c, d) S
|
for_each_host(a,
- b,
c) S
|
for_each_host_safe(a,
- b,
c, d) S
|
for_each_mesh_entry(a,
- b,
c, d) S
)
...+>
[akpm@linux-foundation.org: drop bogus change from net/ipv4/raw.c]
[akpm@linux-foundation.org: drop bogus hunk from net/ipv6/raw.c]
[akpm@linux-foundation.org: checkpatch fixes]
[akpm@linux-foundation.org: fix warnings]
[akpm@linux-foudnation.org: redo intrusive kvm changes]
Tested-by: Peter Senna Tschudin <peter.senna@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Signed-off-by: Sasha Levin <sasha.levin@oracle.com>
Cc: Wu Fengguang <fengguang.wu@intel.com>
Cc: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2013-02-27 17:06:00 -08:00
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2009-11-12 07:44:25 +00:00
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2010-03-26 20:27:49 -07:00
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2009-11-12 07:44:25 +00:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2015-01-16 22:09:00 +01:00
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2009-11-12 07:44:25 +00:00
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2013-03-22 06:28:42 +00:00
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2009-11-12 07:44:25 +00:00
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2007-05-03 15:13:45 -07:00
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2009-11-12 07:44:25 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-12 07:44:25 +00:00
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2005-04-16 15:20:36 -07:00
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2008-11-03 02:48:48 -08:00
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2012-09-07 20:12:54 +00:00
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2005-04-16 15:20:36 -07:00
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2006-08-04 23:04:36 -07:00
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2006-08-15 00:33:59 -07:00
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2008-01-31 18:47:40 -08:00
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2005-04-16 15:20:36 -07:00
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2008-03-25 21:47:49 +09:00
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2006-11-10 14:10:15 -08:00
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2015-04-03 09:17:26 +01:00
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2006-08-15 00:33:59 -07:00
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2012-09-07 20:12:54 +00:00
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2007-01-31 23:16:40 -08:00
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2012-09-07 20:12:54 +00:00
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2009-02-24 23:18:28 -08:00
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2006-08-15 00:33:59 -07:00
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2008-01-31 18:47:40 -08:00
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2005-04-16 15:20:36 -07:00
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2015-10-19 09:23:28 -07:00
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2010-11-16 04:32:48 +00:00
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2011-05-09 20:55:03 -07:00
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2010-11-16 04:32:48 +00:00
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2015-09-11 16:48:48 -04:00
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2010-11-16 04:32:48 +00:00
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2011-05-09 20:55:03 -07:00
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2010-11-16 04:32:48 +00:00
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2015-04-03 09:17:26 +01:00
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2010-11-16 04:32:48 +00:00
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2010-11-22 01:31:54 +00:00
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2010-11-16 04:32:48 +00:00
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2010-12-01 06:03:06 +00:00
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2010-11-22 01:31:54 +00:00
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2010-11-16 04:32:48 +00:00
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2017-04-12 14:34:07 +02:00
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2010-11-16 04:32:48 +00:00
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2010-11-22 01:31:54 +00:00
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2010-12-01 06:03:06 +00:00
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2010-11-22 01:31:54 +00:00
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2017-04-12 14:34:07 +02:00
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2010-11-22 01:31:54 +00:00
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2010-11-16 04:32:48 +00:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-29 04:53:27 +00:00
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2016-03-10 08:55:50 +00:00
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2012-12-04 01:13:35 +00:00
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2016-03-10 08:55:50 +00:00
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2013-12-12 13:06:50 -08:00
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2016-03-10 08:55:50 +00:00
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2015-07-07 13:56:57 -04:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:52 +00:00
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2015-04-03 09:17:26 +01:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:03 -07:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:52 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-29 04:53:27 +00:00
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2016-03-10 08:55:50 +00:00
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2012-12-04 01:13:35 +00:00
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2016-03-10 08:55:50 +00:00
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2013-12-17 22:35:52 -08:00
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2013-12-12 13:06:50 -08:00
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2016-03-10 08:55:50 +00:00
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2015-07-07 13:56:57 -04:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:03 -07:00
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2015-01-16 22:09:00 +01:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2016-07-08 05:18:24 +02:00
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2015-04-03 09:17:26 +01:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2016-07-08 05:18:24 +02:00
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2012-10-25 22:28:52 +00:00
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2012-10-25 22:28:53 +00:00
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2012-10-29 04:53:27 +00:00
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2013-12-17 22:35:52 -08:00
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2015-07-07 13:56:57 -04:00
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2012-10-25 22:28:53 +00:00
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2017-04-16 09:48:24 -07:00
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2012-10-25 22:28:53 +00:00
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2017-04-16 09:48:24 -07:00
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2012-10-25 22:28:53 +00:00
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2016-02-16 21:43:16 -05:00
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2012-10-25 22:28:53 +00:00
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2015-04-03 09:17:26 +01:00
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2012-10-25 22:28:53 +00:00
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2015-04-03 09:17:26 +01:00
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2012-10-25 22:28:53 +00:00
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2016-07-08 05:18:24 +02:00
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2015-04-03 09:17:26 +01:00
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2012-10-25 22:28:53 +00:00
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2016-03-10 08:55:50 +00:00
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2012-10-25 22:28:53 +00:00
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2013-03-05 23:42:06 +00:00
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2013-03-22 06:28:42 +00:00
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2013-03-05 23:42:06 +00:00
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2016-03-10 08:55:50 +00:00
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2013-03-05 23:42:06 +00:00
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2013-03-22 06:28:42 +00:00
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2013-03-05 23:42:06 +00:00
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2016-03-10 08:55:50 +00:00
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2013-03-05 23:42:06 +00:00
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2016-03-10 08:55:50 +00:00
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2013-03-05 23:42:06 +00:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:31:14 -08:00
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2007-06-04 23:35:37 -07:00
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2009-11-04 05:43:23 -08:00
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2007-06-04 23:35:37 -07:00
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2009-11-04 05:43:23 -08:00
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2007-06-04 23:35:37 -07:00
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2007-12-16 13:32:16 -08:00
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2007-06-04 23:35:37 -07:00
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2009-11-04 05:43:23 -08:00
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2007-06-04 23:35:37 -07:00
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2009-11-04 05:43:23 -08:00
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2007-12-16 13:31:14 -08:00
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2007-12-05 01:44:58 -08:00
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2007-12-16 13:32:48 -08:00
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2007-12-05 01:44:58 -08:00
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2007-12-16 13:32:48 -08:00
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2007-12-16 13:32:16 -08:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2007-12-05 01:44:58 -08:00
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2007-12-16 13:31:14 -08:00
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2007-12-05 01:44:58 -08:00
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2016-07-08 05:18:24 +02:00
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2008-06-19 16:15:47 -07:00
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2016-07-08 05:18:24 +02:00
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2012-10-25 22:28:52 +00:00
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2007-12-05 01:44:58 -08:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2007-12-05 01:44:58 -08:00
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2013-12-12 13:06:50 -08:00
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2013-06-11 23:04:25 -07:00
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2009-09-23 15:57:19 -07:00
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2007-06-04 23:35:37 -07:00
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2011-12-01 15:47:06 +00:00
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2009-09-23 15:57:19 -07:00
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2011-12-01 15:47:06 +00:00
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2007-06-04 23:35:37 -07:00
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2007-12-16 13:31:14 -08:00
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2007-06-04 23:35:37 -07:00
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2013-12-12 13:06:50 -08:00
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2007-06-04 23:35:37 -07:00
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2007-12-16 13:32:16 -08:00
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2007-12-16 13:31:14 -08:00
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2012-06-12 00:44:01 +00:00
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2011-12-01 15:47:06 +00:00
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2012-09-07 00:45:29 +00:00
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2013-12-12 13:06:50 -08:00
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2012-10-29 04:53:27 +00:00
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2013-12-12 13:06:50 -08:00
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2017-03-28 14:28:02 -07:00
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2012-10-29 04:53:27 +00:00
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2013-12-12 13:06:50 -08:00
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2017-03-28 14:28:02 -07:00
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2013-12-12 13:06:50 -08:00
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2015-07-07 13:56:57 -04:00
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2017-03-28 14:28:02 -07:00
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|
2015-07-07 13:56:57 -04:00
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2007-06-04 23:35:37 -07:00
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2013-06-11 23:04:25 -07:00
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2009-09-23 15:57:19 -07:00
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2005-04-16 15:20:36 -07:00
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2010-02-19 13:22:59 +00:00
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2009-09-23 15:57:19 -07:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:31:14 -08:00
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2008-06-19 16:15:47 -07:00
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2010-02-19 13:22:59 +00:00
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2009-05-13 16:59:21 +00:00
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2010-02-19 13:22:59 +00:00
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2008-06-19 16:15:47 -07:00
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2012-10-25 22:28:52 +00:00
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2008-06-19 16:15:47 -07:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2008-06-19 16:15:47 -07:00
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2012-09-07 00:45:29 +00:00
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2012-10-25 22:28:52 +00:00
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2017-03-28 14:28:02 -07:00
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2012-10-25 22:28:52 +00:00
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2005-04-16 15:20:36 -07:00
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2013-06-11 23:04:25 -07:00
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2010-12-12 21:55:08 -08:00
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2005-04-16 15:20:36 -07:00
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2009-09-23 15:57:19 -07:00
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2008-07-05 19:00:44 -07:00
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2005-04-16 15:20:36 -07:00
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2012-09-07 00:45:29 +00:00
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2005-04-16 15:20:36 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2010-02-14 03:25:51 +00:00
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2007-06-04 23:34:44 -07:00
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2007-06-04 23:35:37 -07:00
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2007-06-04 23:34:44 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2005-04-16 15:20:36 -07:00
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2010-02-14 03:25:51 +00:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:34:44 -07:00
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2009-11-05 13:32:03 -08:00
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2007-06-04 23:34:44 -07:00
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2009-12-03 01:25:58 +00:00
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2009-12-25 17:30:22 -08:00
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2007-06-04 23:34:44 -07:00
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2009-02-01 01:04:33 -08:00
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2010-01-05 05:50:47 +00:00
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2013-08-06 19:03:14 +01:00
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2013-08-06 19:03:15 +01:00
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2015-06-23 13:45:37 -04:00
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|
2016-02-04 13:31:18 +01:00
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2007-06-04 23:34:44 -07:00
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2012-06-12 00:44:01 +00:00
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2016-02-04 13:31:17 +01:00
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2005-04-16 15:20:36 -07:00
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2007-12-16 13:30:07 -08:00
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|
2016-08-30 10:09:22 +02:00
|
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|
2005-04-16 15:20:36 -07:00
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2007-12-02 00:17:46 +11:00
|
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2012-04-19 13:42:09 +00:00
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|
2007-12-02 00:57:08 +11:00
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2007-12-02 00:17:46 +11:00
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2005-04-16 15:20:36 -07:00
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2007-12-02 00:17:46 +11:00
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2005-04-16 15:20:36 -07:00
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2007-06-04 23:35:37 -07:00
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2007-12-16 13:31:14 -08:00
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2005-04-16 15:20:36 -07:00
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2012-04-19 13:42:09 +00:00
|
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2005-04-16 15:20:36 -07:00
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|
2012-04-19 13:42:09 +00:00
|
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|
2005-04-16 15:20:36 -07:00
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|
2012-04-19 13:42:09 +00:00
|
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|
2005-04-16 15:20:36 -07:00
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2016-08-30 10:09:22 +02:00
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2017-03-28 14:28:02 -07:00
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2007-12-16 13:30:07 -08:00
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2005-04-16 15:20:36 -07:00
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2007-12-02 00:17:46 +11:00
|
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2005-04-16 15:20:36 -07:00
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2007-12-02 00:17:46 +11:00
|
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2007-12-16 13:30:07 -08:00
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2005-04-16 15:20:36 -07:00
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2017-03-28 14:28:03 -07:00
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2007-12-11 02:17:40 -08:00
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2017-03-28 14:28:03 -07:00
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2007-12-11 02:17:40 -08:00
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2017-03-28 14:28:03 -07:00
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2007-12-11 02:17:40 -08:00
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2014-07-25 15:25:08 -07:00
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2007-12-02 00:55:54 +11:00
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2014-07-25 15:25:08 -07:00
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2016-08-30 10:09:22 +02:00
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2014-07-25 15:25:08 -07:00
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2007-12-02 00:55:54 +11:00
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2007-12-11 02:17:40 -08:00
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2005-04-16 15:20:36 -07:00
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2017-03-28 14:28:03 -07:00
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2007-12-11 02:17:40 -08:00
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2005-04-16 15:20:36 -07:00
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2007-12-05 01:44:58 -08:00
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2010-02-14 03:25:51 +00:00
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2007-12-05 01:44:58 -08:00
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2007-12-16 13:31:14 -08:00
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2007-12-05 01:44:58 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-05 01:44:58 -08:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2009-11-25 15:14:13 -08:00
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2007-12-16 13:31:47 -08:00
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2015-04-03 09:17:26 +01:00
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2007-12-16 13:31:47 -08:00
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2015-04-03 09:17:26 +01:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2015-04-03 09:17:26 +01:00
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2007-12-16 13:31:47 -08:00
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2010-02-14 03:25:51 +00:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2016-08-30 10:09:22 +02:00
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2007-12-16 13:31:47 -08:00
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2016-08-30 10:09:22 +02:00
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2007-12-16 13:31:47 -08:00
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2012-04-19 13:42:09 +00:00
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2015-04-03 09:17:26 +01:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2017-03-28 14:28:03 -07:00
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2007-12-16 13:31:47 -08:00
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2017-03-28 14:28:03 -07:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2017-03-28 14:28:03 -07:00
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2007-12-16 13:31:47 -08:00
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2008-01-05 23:08:49 -08:00
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2007-12-16 13:31:47 -08:00
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2015-01-29 12:15:03 +01:00
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2010-11-16 04:32:48 +00:00
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2010-11-22 01:31:54 +00:00
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2010-11-16 04:32:48 +00:00
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2005-04-16 15:20:36 -07:00
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2011-02-18 12:42:28 -08:00
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2007-12-16 13:31:47 -08:00
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2005-04-16 15:20:36 -07:00
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2007-03-22 11:55:17 -07:00
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2014-01-22 12:23:32 +05:30
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2013-01-24 09:41:41 +00:00
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2010-11-16 04:32:48 +00:00
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2017-08-09 20:41:48 +02:00
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2012-10-25 22:28:53 +00:00
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2017-08-09 20:41:48 +02:00
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2005-04-16 15:20:36 -07:00
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