Make the refcounting of netfs_begin_read() easier to use by not eating the
caller's ref on the netfs_io_request it's given. This makes it easier to
use when we need to look in the request struct after.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Add a hook for netfslib's write helpers to call to tell the network
filesystem that it should update its i_size.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Modify the netfs_io_request struct to act as a point around which writes
can be coordinated. It represents and pins a range of pages that need
writing and a list of regions of dirty data in that range of pages.
If RMW is required, the original data can be downloaded into the bounce
buffer, decrypted if necessary, the modifications made, then the modified
data can be reencrypted/recompressed and sent back to the server.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Limit a subrequest to a maximum size and/or a maximum number of contiguous
physical regions. This permits, for instance, an subreq's iterator to be
limited to the number of DMA'able segments that a large RDMA request can
handle.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Add a function to work out how much of an ITER_BVEC or ITER_XARRAY iterator
we can use in a pagecount-limited and size-limited span. This will be
used, for example, to limit the number of segments in a subrequest to the
maximum number of elements that an RDMA transfer can handle.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Provide tools to create a buffer in an xarray, with a function to add new
folios with a mark. This will be used to create bounce buffer and can be
used more easily to create a list of folios the span of which would require
more than a page's worth of bio_vec structs.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
Add a bvec array pointer and an iterator to netfs_io_request for either
holding a copy of a DIO iterator or a list of all the bits of buffer
pointed to by a DIO iterator.
There are two problems: Firstly, if an iovec-class iov_iter is passed to
->read_iter() or ->write_iter(), this cannot be passed directly to
kernel_sendmsg() or kernel_recvmsg() as that may cause locking recursion if
a fault is generated, so we need to keep track of the pages involved
separately.
Secondly, if the I/O is asynchronous, we must copy the iov_iter describing
the buffer before returning to the caller as it may be immediately
deallocated.
Signed-off-by: David Howells <dhowells@redhat.com>
Reviewed-by: Jeff Layton <jlayton@kernel.org>
cc: linux-cachefs@redhat.com
cc: linux-fsdevel@vger.kernel.org
cc: linux-mm@kvack.org
asm-generic/posix-types.h is obtained through bioscfg.h so there is no
need to include it. It is also an asm-generic file which should be
avoided if possible.
Suggest-by: Al Viro <viro@zeniv.linux.org.uk>
Signed-off-by: Tanzir Hasan <tanzirh@google.com>
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Tested-by: Nick Desaulniers <ndesaulniers@google.com>
Link: https://lore.kernel.org/r/20231219-hp-password-v1-1-052fe7b6b7f1@google.com
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Remove these unused clock references to fix dtbs_check warnings:
etm@3f740000: clocks: [[11], [35, 34], [36, 8]] is too long
etm@3f740000: clock-names:1: 'atclk' was expected
etm@3f740000: clock-names: ['apb_pclk', 'clk_cs', 'cs_src'] is too long
Link: https://lore.kernel.org/r/20231221092824.1169453-1-chunyan.zhang@unisoc.com
Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com>
EditorConfig is a specification to define the most basic code formatting
stuff, and it's supported by many editors and IDEs, either directly or
via plugins, including VSCode/VSCodium, Vim, emacs and more.
It allows to define formatting style related to indentation, charset,
end of lines and trailing whitespaces. It also allows to apply different
formats for different files based on wildcards, so for example it is
possible to apply different configs to *.{c,h}, *.py and *.rs.
In linux project, defining a .editorconfig might help to those people
that work on different projects with different indentation styles, so
they cannot define a global style. Now they will directly see the
correct indentation on every fresh clone of the project.
See https://editorconfig.org
Co-developed-by: Danny Lin <danny@kdrag0n.dev>
Signed-off-by: Danny Lin <danny@kdrag0n.dev>
Signed-off-by: Íñigo Huguet <ihuguet@redhat.com>
Acked-by: Mickaël Salaün <mic@digikod.net>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Tested-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
When using a custom location for kernel config files this merge config
command fails as it doesn't use the configuration set with
KCONFIG_CONFIG.
Signed-off-by: Markus Schneider-Pargmann <msp@baylibre.com>
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
menu_has_help() and menu_get_help() functions are only used within
menu_get_ext_help().
Squash them into menu_get_ext_help(). It revealed the if-conditional
in menu_get_help() was unneeded, as menu_has_help() has already checked
that menu->help is not NULL.
Signed-off-by: Masahiro Yamada <masahiroy@kernel.org>
If ->NameOffset/Length is bigger than ->CreateContextsOffset/Length,
ksmbd_check_message doesn't validate request buffer it correctly.
So slab-out-of-bounds warning from calling smb_strndup_from_utf16()
in smb2_open() could happen. If ->NameLength is non-zero, Set the larger
of the two sums (Name and CreateContext size) as the offset and length of
the data area.
Reported-by: Yang Chaoming <lometsj@live.com>
Cc: stable@vger.kernel.org
Signed-off-by: Namjae Jeon <linkinjeon@kernel.org>
Signed-off-by: Steve French <stfrench@microsoft.com>
btrfs has a variety of asynchronous things we do with inodes that can
potentially last until ->put_super, when we shut everything down and
clean up all of our async work. Due to this we need to move
fscrypt_destroy_keyring() to after ->put_super, otherwise we get
warnings about still having active references on the master key.
Signed-off-by: Josef Bacik <josef@toxicpanda.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Neal Gompa <neal@gompa.dev>
Link: https://lore.kernel.org/r/20231227171429.9223-3-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
Call destroy_device_list() and free the f2fs_sb_info from
kill_f2fs_super(), after the call to kill_block_super(). This is
necessary to order it after the call to fscrypt_destroy_keyring() once
generic_shutdown_super() starts calling fscrypt_destroy_keyring() just
after calling ->put_super. This is because fscrypt_destroy_keyring()
may call into f2fs_get_devices() via the fscrypt_operations.
Reviewed-by: Chao Yu <chao@kernel.org>
Link: https://lore.kernel.org/r/20231227171429.9223-2-ebiggers@kernel.org
Signed-off-by: Eric Biggers <ebiggers@google.com>
The .remove() callback for a platform driver returns an int which makes
many driver authors wrongly assume it's possible to do error handling by
returning an error code. However the value returned is ignored (apart
from emitting a warning) and this typically results in resource leaks.
To improve here there is a quest to make the remove callback return
void. In the first step of this quest all drivers are converted to
.remove_new(), which already returns void. Eventually after all drivers
are converted, .remove_new() will be renamed to .remove().
Trivially convert this driver from always returning zero in the remove
callback to the void returning variant.
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Link: https://lore.kernel.org/r/d323e4f24bfab3ac1480933deb51e7c5cb025b09.1703693980.git.u.kleine-koenig@pengutronix.de
Signed-off-by: Tzung-Bi Shih <tzungbi@kernel.org>
are not considered backporting material.
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Merge tag 'mm-hotfixes-stable-2023-12-27-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm
Pull misc fixes from Andrew Morton:
"11 hotfixes. 7 are cc:stable and the other 4 address post-6.6 issues
or are not considered backporting material"
* tag 'mm-hotfixes-stable-2023-12-27-15-00' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm:
mailmap: add an old address for Naoya Horiguchi
mm/memory-failure: cast index to loff_t before shifting it
mm/memory-failure: check the mapcount of the precise page
mm/memory-failure: pass the folio and the page to collect_procs()
selftests: secretmem: floor the memory size to the multiple of page_size
mm: migrate high-order folios in swap cache correctly
maple_tree: do not preallocate nodes for slot stores
mm/filemap: avoid buffered read/write race to read inconsistent data
kunit: kasan_test: disable fortify string checker on kmalloc_oob_memset
kexec: select CRYPTO from KEXEC_FILE instead of depending on it
kexec: fix KEXEC_FILE dependencies
ida_alloc() and ida_free() should be preferred to the deprecated
ida_simple_get() and ida_simple_remove().
This is less verbose.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Message-Id: <d7534cc4caf4ff9d6b072744352c1b69487779ea.1702230703.git.christophe.jaillet@wanadoo.fr>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
If a virtio_pci_device supports native PCI power management and has the
No_Soft_Reset bit set, then skip resetting and reinitializing the device
when suspending and restoring the device. This allows system-wide low
power states like s2idle to be used in systems with stateful virtio
devices that can't simply be re-initialized (e.g. virtio-fs).
Signed-off-by: David Stevens <stevensd@chromium.org>
Message-Id: <20231208070754.3132339-1-stevensd@chromium.org>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
For rq, we have three cases getting buffers from virtio core:
1. virtqueue_get_buf{,_ctx}
2. virtqueue_detach_unused_buf
3. callback for virtqueue_resize
But in commit 295525e29a5b("virtio_net: merge dma operations when
filling mergeable buffers"), I missed the dma unmap for the #3 case.
That will leak some memory, because I did not release the pages referred
by the unused buffers.
If we do such script, we will make the system OOM.
while true
do
ethtool -G ens4 rx 128
ethtool -G ens4 rx 256
free -m
done
Fixes: 295525e29a ("virtio_net: merge dma operations when filling mergeable buffers")
Signed-off-by: Xuan Zhuo <xuanzhuo@linux.alibaba.com>
Message-Id: <20231226094333.47740-1-xuanzhuo@linux.alibaba.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
iommu allocations should be accounted in order to allow admins to
monitor and limit the amount of iommu memory.
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Acked-by: Michael S. Tsirkin <mst@redhat.com>
Message-Id: <20231226182827.294158-1-pasha.tatashin@soleen.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Acked-by: David Rientjes <rientjes@google.com>
Correct to "stretched" from "streched" in "keeps clock streched on bus A
waiting for reply".
Signed-off-by: Attreyee Mukherjee <tintinm2017@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Wolfram Sang <wsa@kernel.org>
Currently the driver accepts VLAN EtherType steering rules regardless of
the configured mask. And things might fail silently or with confusing error
messages to the user. The VLAN EtherType can only be matched by full
mask. Therefore, add a check for that.
For instance the following rule is invalid, but the driver accepts it and
ignores the user specified mask:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
| m 0x00ff action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x8100 mask: 0x0
| VLAN: 0x0 mask: 0xffff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 0
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 \
| m 0x00ff action 0
|rmgr: Cannot insert RX class rule: Operation not supported
Fixes: 2b477d057e ("igc: Integrate flex filter into ethtool ops")
Suggested-by: Suman Ghosh <sumang@marvell.com>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Currently the driver accepts VLAN TCI steering rules regardless of the
configured mask. And things might fail silently or with confusing error
messages to the user.
There are two ways to handle the VLAN TCI mask:
1. Match on the PCP field using a VLAN prio filter
2. Match on complete TCI field using a flex filter
Therefore, add checks and code for that.
For instance the following rule is invalid and will be converted into a
VLAN prio rule which is not correct:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan 0x0001 m 0xf000 \
| action 1
|Added rule with ID 61
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 61
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x0 mask: 0xffff
| VLAN: 0x1 mask: 0x1fff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 1
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan 0x0001 m 0xf000 \
| action 1
|rmgr: Cannot insert RX class rule: Operation not supported
Fixes: 7991487ecb ("igc: Allow for Flex Filters to be installed")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Currently the driver allows to configure matching by VLAN EtherType.
However, the retrieval function does not report it back to the user. Add
it.
Before:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| Action: Direct to queue 0
After:
|root@host:~# ethtool -N enp3s0 flow-type ether vlan-etype 0x8100 action 0
|Added rule with ID 63
|root@host:~# ethtool --show-ntuple enp3s0
|4 RX rings available
|Total 1 rules
|
|Filter: 63
| Flow Type: Raw Ethernet
| Src MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Dest MAC addr: 00:00:00:00:00:00 mask: FF:FF:FF:FF:FF:FF
| Ethertype: 0x0 mask: 0xFFFF
| VLAN EtherType: 0x8100 mask: 0x0
| VLAN: 0x0 mask: 0xffff
| User-defined: 0x0 mask: 0xffffffffffffffff
| Action: Direct to queue 0
Fixes: 2b477d057e ("igc: Integrate flex filter into ethtool ops")
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Vinicius Costa Gomes <vinicius.gomes@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Naama Meir <naamax.meir@linux.intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Prevent VF from configuring filters with unsupported actions or use
REDIRECT action with invalid tc number. Current checks could cause
out of bounds access on PF side.
Fixes: e284fc2804 ("i40e: Add and delete cloud filter")
Reviewed-by: Andrii Staikov <andrii.staikov@intel.com>
Signed-off-by: Sudheer Mogilappagari <sudheer.mogilappagari@intel.com>
Signed-off-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Simon Horman <horms@kernel.org>
Tested-by: Bharathi Sreenivas <bharathi.sreenivas@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Stop dividing the phase_offset value received from firmware. This fault
is present since the initial implementation.
The phase_offset value received from firmware is in 0.01ps resolution.
Dpll subsystem is using the value in 0.001ps, raw value is adjusted
before providing it to the user.
The user can observe the value of phase offset with response to
`pin-get` netlink message of dpll subsystem for an active pin:
$ ./tools/net/ynl/cli.py --spec Documentation/netlink/specs/dpll.yaml \
--do pin-get --json '{"id":2}'
Where example of correct response would be:
{'board-label': 'C827_0-RCLKA',
'capabilities': 6,
'clock-id': 4658613174691613800,
'frequency': 1953125,
'id': 2,
'module-name': 'ice',
'parent-device': [{'direction': 'input',
'parent-id': 6,
'phase-offset': -216839550,
'prio': 9,
'state': 'connected'},
{'direction': 'input',
'parent-id': 7,
'phase-offset': -42930,
'prio': 8,
'state': 'connected'}],
'phase-adjust': 0,
'phase-adjust-max': 16723,
'phase-adjust-min': -16723,
'type': 'mux'}
Provided phase-offset value (-42930) shall be divided by the user with
DPLL_PHASE_OFFSET_DIVIDER to get actual value of -42.930 ps.
Before the fix, the response was not correct:
{'board-label': 'C827_0-RCLKA',
'capabilities': 6,
'clock-id': 4658613174691613800,
'frequency': 1953125,
'id': 2,
'module-name': 'ice',
'parent-device': [{'direction': 'input',
'parent-id': 6,
'phase-offset': -216839,
'prio': 9,
'state': 'connected'},
{'direction': 'input',
'parent-id': 7,
'phase-offset': -42,
'prio': 8,
'state': 'connected'}],
'phase-adjust': 0,
'phase-adjust-max': 16723,
'phase-adjust-min': -16723,
'type': 'mux'}
Where phase-offset value (-42), after division
(DPLL_PHASE_OFFSET_DIVIDER) would be: -0.042 ps.
Fixes: 8a3a565ff2 ("ice: add admin commands to access cgu configuration")
Fixes: 90e1c90750 ("ice: dpll: implement phase related callbacks")
Reviewed-by: Aleksandr Loktionov <aleksandr.loktionov@intel.com>
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Arkadiusz Kubalewski <arkadiusz.kubalewski@intel.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
Disabling netdev with ethtool private flag "link-down-on-close" enabled
can cause NULL pointer dereference bug. Shut down VSI regardless of
"link-down-on-close" state.
Fixes: 8ac7132704 ("ice: Fix interface being down after reset with link-down-on-close flag on")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Ngai-Mint Kwan <ngai-mint.kwan@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
The driver should not report an error message when for a medialess port
the link_down_on_close flag is enabled and the physical link cannot be
set down.
Fixes: 8ac7132704 ("ice: Fix interface being down after reset with link-down-on-close flag on")
Reviewed-by: Przemek Kitszel <przemyslaw.kitszel@intel.com>
Signed-off-by: Katarzyna Wieczerzycka <katarzyna.wieczerzycka@intel.com>
Signed-off-by: Wojciech Drewek <wojciech.drewek@intel.com>
Tested-by: Pucha Himasekhar Reddy <himasekharx.reddy.pucha@intel.com> (A Contingent worker at Intel)
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
BLK_DEF_MAX_SECTORS despite the confusing name is the default cap for
the max_sectors limits. Don't use it to initialize max_hw_setors, which
is a hardware / driver capacility.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231227092305.279567-4-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
BLK_DEF_MAX_SECTORS despite the confusing name is the default cap for
the max_sectors limits. Don't use it to initialize max_hw_setors, which
is a hardware / driver capacility.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231227092305.279567-3-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
null_blk has some rather odd capping of the max_hw_sectors value to
BLK_DEF_MAX_SECTORS, which doesn't make sense - max_hw_sector is the
hardware limit, and BLK_DEF_MAX_SECTORS despite the confusing name is the
default cap for the max_sectors field used for normal file system I/O.
Remove all the capping, and simply leave it to the block layer or
user to take up or not all of that for file system I/O.
Fixes: ea17fd354c ("null_blk: Allow controlling max_hw_sectors limit")
Signed-off-by: Christoph Hellwig <hch@lst.de>
Link: https://lore.kernel.org/r/20231227092305.279567-2-hch@lst.de
Signed-off-by: Jens Axboe <axboe@kernel.dk>
by moving cond_resched_rcu() to rcupdate_wait.h, we can kill another big
sched.h dependency.
Signed-off-by: Kent Overstreet <kent.overstreet@linux.dev>
