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b0dc3c8bc1
linux/drivers/md
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Joe Thornber b0dc3c8bc1 dm btree: add ref counting ops for the leaves of top level btrees 
When using nested btrees, the top leaves of the top levels contain
block addresses for the root of the next tree down.  If we shadow a
shared leaf node the leaf values (sub tree roots) should be incremented
accordingly.

This is only an issue if there is metadata sharing in the top levels.
Which only occurs if metadata snapshots are being used (as is possible
with dm-thinp).  And could result in a block from the thinp metadata
snap being reused early, thus corrupting the thinp metadata snap.

Signed-off-by: Joe Thornber <ejt@redhat.com>
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Cc: stable@vger.kernel.org
2015-08-12 10:50:37 -04:00
..
bcache bcache: don't embed 'return' statements in closure macros 2015-07-11 09:57:32 -06:00
persistent-data dm btree: add ref counting ops for the leaves of top level btrees 2015-08-12 10:50:37 -04:00
bitmap.c Some md fixes for 4.2 2015-07-25 11:24:58 -07:00
bitmap.h md-cluster: re-add capabilities 2015-04-22 07:59:39 +10:00
dm-bio-prison.c dm bio prison: add dm_cell_promote_or_release() 2015-05-29 14:19:06 -04:00
dm-bio-prison.h dm bio prison: add dm_cell_promote_or_release() 2015-05-29 14:19:06 -04:00
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 time comparison to use time_after_eq() 2015-02-09 13:06:48 -05:00
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 cache: revert "remove remainder of distinct discard block size" 2014-11-10 15:25:30 -05:00
dm-cache-metadata.c dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-metadata.h dm cache: add fail io mode and needs_check flag 2015-06-11 17:13:00 -04:00
dm-cache-policy-cleaner.c dm cache: pass a new 'critical' flag to the policies when requesting writeback work 2015-05-29 14:19:04 -04:00
dm-cache-policy-internal.h dm cache: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-policy-mq.c dm cache: switch the "default" cache replacement policy from mq to smq 2015-06-17 12:40:38 -04:00
dm-cache-policy-smq.c dm cache policy smq: fix alloc_bitset check that always evaluates as false 2015-07-27 07:58:15 -04:00
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: age and write back cache entries even without active IO 2015-06-11 17:13:01 -04:00
dm-cache-target.c dm cache: fix device destroy hang due to improper prealloc_used accounting 2015-07-29 14:32:09 -04:00
dm-crypt.c dm crypt: add comments to better describe crypto processing logic 2015-05-29 14:19:02 -04:00
dm-delay.c dm delay: use msecs_to_jiffies for time conversion 2015-04-15 12:10:21 -04:00
dm-era-target.c dm era: check for a non-NULL metadata object before closing it 2014-06-03 13:44:08 -04:00
dm-exception-store.c dm: replace simple_strtoul 2012-07-27 15:07:59 +01:00
dm-exception-store.h
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 2015-02-27 14:53:32 -05:00
dm-ioctl.c dm: only initialize the request_queue once 2015-04-30 10:25:21 -04:00
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 base: fix compile warning 2015-04-15 12:10:20 -04:00
dm-log-userspace-transfer.c dm log userspace transfer: match wait_for_completion_timeout return type 2015-04-15 12:10:20 -04:00
dm-log-userspace-transfer.h
dm-log-writes.c dm log writes: use ULL suffix for 64-bit constants 2015-05-29 14:19:01 -04:00
dm-log.c dm: use memweight() 2012-07-30 17:25:16 -07:00
dm-mpath.c dm mpath: fix leak of dm_mpath_io structure in blk-mq .queue_rq error path 2015-05-27 17:37:22 -04:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h
dm-queue-length.c dm: reject trailing characters in sccanf input 2012-03-28 18:41:26 +01:00
dm-raid1.c dm raid1: keep issuing IO after leg failure 2015-05-29 14:19:02 -04:00
dm-raid.c dm raid: add support for the MD RAID0 personality 2015-05-29 14:19:00 -04:00
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: remove unnecessary NULL checks before vfree() calls 2015-02-09 13:06:49 -05:00
dm-snap-transient.c
dm-snap.c block: remove management of bi_remaining when restoring original bi_end_io 2015-05-22 08:58:55 -06:00
dm-stats.c dm stats: add support for request-based DM devices 2015-06-17 12:40:41 -04:00
dm-stats.h dm stats: support precise timestamps 2015-06-17 12:40:40 -04:00
dm-stripe.c dm stripe: drop useless exit point from dm_stripe_init() 2015-05-29 14:19:01 -04:00
dm-switch.c dm switch: efficiently support repetitive patterns 2014-08-01 12:30:37 -04:00
dm-sysfs.c dm: add 'use_blk_mq' module param and expose in per-device ro sysfs attr 2015-04-15 12:10:17 -04:00
dm-table.c Revert "block, dm: don't copy bios for request clones" 2015-06-26 10:11:58 -04:00
dm-target.c dm: allocate requests in target when stacking on blk-mq devices 2015-02-09 13:06:47 -05:00
dm-thin-metadata.c dm thin metadata: delete btrees when releasing metadata snapshot 2015-08-12 10:42:51 -04:00
dm-thin-metadata.h dm thin metadata: add dm_thin_remove_range() 2015-06-11 17:13:04 -04:00
dm-thin.c dm thin: return -ENOSPC when erroring retry list due to out of data space 2015-07-26 17:39:19 -04:00
dm-uevent.c
dm-uevent.h
dm-verity.c block: remove management of bi_remaining when restoring original bi_end_io 2015-05-22 08:58:55 -06:00
dm-zero.c dm crypt, dm zero: update author name following legal name change 2014-07-10 16:44:14 -04:00
dm.c dm: fix dm_merge_bvec regression on 32 bit systems 2015-08-03 22:49:59 -04:00
dm.h - Revert block and DM core changes the removed request-based DM's 2015-06-26 12:35:01 -07:00
faulty.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
Kconfig dm crypt: update wiki page URL 2015-07-27 07:58:16 -04:00
linear.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
linear.h
Makefile dm cache: add stochastic-multi-queue (smq) policy 2015-06-11 17:12:59 -04:00
md-cluster.c Fix read-balancing during node failure 2015-07-24 13:37:59 +10:00
md-cluster.h Fix read-balancing during node failure 2015-07-24 13:37:59 +10:00
md.c md: use kzalloc() when bitmap is disabled 2015-08-03 14:56:02 +10:00
md.h writeback: separate out include/linux/backing-dev-defs.h 2015-06-02 08:33:34 -06:00
multipath.c md: rename ->stop to ->free 2015-02-04 08:35:52 +11:00
multipath.h
raid0.c md/raid0: fix restore to sector variable in raid0_make_request 2015-05-21 09:14:25 +10:00
raid0.h
raid1.c md/raid1: extend spinlock to protect raid1_end_read_request against inconsistencies 2015-08-03 12:29:42 +10:00
raid1.h md: make ->congested robust against personality changes. 2015-02-04 08:35:52 +11:00
raid5.c md/raid5: don't let shrink_slab shrink too far. 2015-08-03 17:10:56 +10:00
raid5.h md/raid5: avoid races when changing cache size. 2015-07-22 14:04:15 +10:00
raid10.c md/raid10: always set reshape_safe when initializing reshape_position. 2015-07-22 14:08:24 +10:00
raid10.h md: make ->congested robust against personality changes. 2015-02-04 08:35:52 +11:00