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linux/drivers/md
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Darrick J. Wong f4e6c2337d dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME 
commit e5db29806b upstream.

Since it's possible for the discard and write same queue limits to
change while the upper level command is being sliced and diced, fix up
both of them (a) to reject IO if the special command is unsupported at
the start of the function and (b) read the limits once and let the
commands error out on their own if the status happens to change.

Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Mikulas Patocka <mpatocka@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
History 2015-04-13 14:03:02 +02:00
..
bcache bcache: Make sure to pass GFP_WAIT to mempool_alloc() 2015-01-27 08:18:59 -08:00
persistent-data dm space map metadata: fix sm_bootstrap_get_nr_blocks() 2015-01-08 10:00:48 -08:00
bitmap.c md/bitmap: always wait for writes on unplug. 2015-01-08 10:00:48 -08:00
bitmap.h kernfs: s/sysfs_dirent/kernfs_node/ and rename its friends accordingly 2013-12-11 15:28:36 -08:00
dm-bio-prison.c dm: add cache target 2013-03-01 22:45:51 +00:00
dm-bio-prison.h dm: add cache target 2013-03-01 22:45:51 +00:00
dm-bio-record.h dm: Refactor for new bio cloning/splitting 2013-11-23 22:33:55 -08:00
dm-bufio.c dm bufio: fix memleak when using a dm_buffer's inline bio 2015-01-08 10:00:48 -08:00
dm-bufio.h dm snapshot: use dm-bufio prefetch 2014-01-14 23:23:03 -05:00
dm-builtin.c dm sysfs: fix a module unload race 2014-01-14 23:23:04 -05:00
dm-cache-block-types.h dm: add cache target 2013-03-01 22:45:51 +00:00
dm-cache-metadata.c dm cache: fix missing ERR_PTR returns and handling 2015-02-05 22:35:50 -08:00
dm-cache-metadata.h dm cache: fix a lock-inversion 2014-05-13 13:32:55 +02:00
dm-cache-policy-cleaner.c dm cache: policy change version from string to integer set 2013-03-20 17:21:27 +00:00
dm-cache-policy-internal.h dm cache: add remove_cblock method to policy interface 2013-11-11 11:37:50 -05:00
dm-cache-policy-mq.c dm cache mq: fix memory allocation failure for large cache devices 2014-02-28 12:18:29 -05:00
dm-cache-policy.c dm cache: add policy name to status output 2014-01-16 13:44:11 -05:00
dm-cache-policy.h dm cache: add policy name to status output 2014-01-16 13:44:11 -05:00
dm-cache-target.c dm cache: fix problematic dual use of a single migration count variable 2015-01-29 17:40:49 -08:00
dm-crypt.c dm crypt: use memzero_explicit for on-stack buffer 2015-01-08 10:00:48 -08:00
dm-delay.c Merge branch 'for-3.14/core' of git://git.kernel.dk/linux-block 2014-01-30 11:19:05 -08:00
dm-exception-store.c dm: replace simple_strtoul 2012-07-27 15:07:59 +01:00
dm-exception-store.h dm snapshot: test chunk size against both origin and snapshot 2010-08-12 04:13:51 +01:00
dm-flakey.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
dm-io.c dm io: deal with wandering queue limits when handling REQ_DISCARD and REQ_WRITE_SAME 2015-04-13 14:03:02 +02:00
dm-ioctl.c dm: allow remove to be deferred 2013-11-09 18:20:22 -05:00
dm-kcopyd.c dm: stop using WQ_NON_REENTRANT 2013-08-23 09:02:13 -04:00
dm-linear.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
dm-log-userspace-base.c dm log userspace: allow mark requests to piggyback on flush requests 2014-01-21 23:46:27 -05:00
dm-log-userspace-transfer.c dm log userspace: fix memory leak in dm_ulog_tfr_init failure path 2014-11-14 08:59:51 -08:00
dm-log-userspace-transfer.h dm log: userspace add luid to distinguish between concurrent log instances 2009-09-04 20:40:34 +01:00
dm-log.c dm: use memweight() 2012-07-30 17:25:16 -07:00
dm-mpath.c dm mpath: fix stalls when handling invalid ioctls 2014-02-26 09:44:44 -05:00
dm-mpath.h dm mpath: remove is_active from struct dm_path 2008-10-10 13:36:58 +01:00
dm-path-selector.c md: Add module.h to all files using it implicitly 2011-10-31 19:31:18 -04:00
dm-path-selector.h dm mpath: add start_io and nr_bytes to path selectors 2009-06-22 10:12:27 +01:00
dm-queue-length.c dm: reject trailing characters in sccanf input 2012-03-28 18:41:26 +01:00
dm-raid.c dm raid: ensure superblock's size matches device's logical block size 2014-11-21 09:23:03 -08:00
dm-raid1.c dm mirror: do not degrade the mirror on discard error 2015-03-18 13:31:32 +01:00
dm-region-hash.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
dm-round-robin.c dm: reject trailing characters in sccanf input 2012-03-28 18:41:26 +01:00
dm-service-time.c dm: reject trailing characters in sccanf input 2012-03-28 18:41:26 +01:00
dm-snap-persistent.c dm snapshot: fix metadata corruption 2014-03-03 17:58:13 -05:00
dm-snap-transient.c md: Add in export.h for files using EXPORT_SYMBOL 2011-10-31 19:31:19 -04:00
dm-snap.c dm snapshot: fix a possible invalid memory access on unload 2015-03-18 13:31:33 +01:00
dm-stats.c dm stats: initialize read-only module parameter 2013-12-10 19:13:21 -05:00
dm-stats.h dm: add statistics support 2013-09-05 20:46:06 -04:00
dm-stripe.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
dm-switch.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
dm-sysfs.c dm sysfs: fix a module unload race 2014-01-14 23:23:04 -05:00
dm-table.c dm table: remove unused buggy code that extends the targets array 2014-01-07 10:11:44 -05:00
dm-target.c dm: allow error target to replace bio-based and request-based targets 2013-09-05 20:46:05 -04:00
dm-thin-metadata.c dm thin metadata: do not allow the data block size to change 2014-07-28 08:06:03 -07:00
dm-thin-metadata.h dm thin: ensure user takes action to validate data and metadata consistency 2014-03-05 15:25:35 -05:00
dm-thin.c dm thin: don't allow messages to be sent to a pool target in READ_ONLY or FAIL mode 2015-02-05 22:35:50 -08:00
dm-uevent.c md: Add in export.h for files using EXPORT_SYMBOL 2011-10-31 19:31:19 -04:00
dm-uevent.h dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-verity.c dm verity: fix biovecs hash calculation regression 2014-06-07 10:28:12 -07:00
dm-zero.c dm: rename request variables to bios 2013-03-01 22:45:47 +00:00
dm.c dm: hold suspend_lock while suspending device during device deletion 2015-04-13 14:03:02 +02:00
dm.h dm sysfs: fix a module unload race 2014-01-14 23:23:04 -05:00
faulty.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
Kconfig dm: fix Kconfig indentation 2014-03-03 17:31:07 -05:00
linear.c block: Introduce new bio_split() 2013-11-23 22:33:57 -08:00
linear.h md/linear: typedef removal: linear_conf_t -> struct linear_conf 2011-10-11 16:48:54 +11:00
Makefile dm sysfs: fix a module unload race 2014-01-14 23:23:04 -05:00
md.c md: Always set RECOVERY_NEEDED when clearing RECOVERY_FROZEN 2014-11-21 09:23:04 -08:00
md.h Driver core / sysfs patches for 3.14-rc1 2014-01-20 15:49:44 -08:00
multipath.c block: Abstract out bvec iterator 2013-11-23 22:33:47 -08:00
multipath.h md/multipath: typedef removal: multipath_conf_t -> struct mpconf 2011-10-11 16:48:57 +11:00
raid0.c block: Introduce new bio_split() 2013-11-23 22:33:57 -08:00
raid0.h md: add proper merge_bvec handling to RAID0 and Linear. 2012-03-19 12:46:39 +11:00
raid1.c md/raid1: fix read balance when a drive is write-mostly. 2015-03-06 14:43:31 -08:00
raid1.h raid1: Rewrite the implementation of iobarrier. 2013-11-19 15:19:18 +11:00
raid5.c md/raid5: Fix livelock when array is both resyncing and degraded. 2015-03-06 14:43:31 -08:00
raid5.h md update for 3.13. 2013-11-20 13:05:25 -08:00
raid10.c md/raid10: Fix memory leak when raid10 reshape completes. 2014-09-17 09:19:24 -07:00
raid10.h MD RAID10: Improve redundancy for 'far' and 'offset' algorithms (part 1) 2013-02-26 11:55:30 +11:00