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- Fix DM snapshot deadlock that can occur due to COW throttling

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preventing locks from being released.
 
 - Fix DM cache's GFP_NOWAIT allocation failure error paths by switching
   to GFP_NOIO.
 
 - Make __hash_find() static in the DM clone target.
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Merge tag 'for-5.4/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm

Pull device mapper fixes from Mike Snitzer:

 - Fix DM snapshot deadlock that can occur due to COW throttling
   preventing locks from being released.

 - Fix DM cache's GFP_NOWAIT allocation failure error paths by switching
   to GFP_NOIO.

 - Make __hash_find() static in the DM clone target.

* tag 'for-5.4/dm-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/device-mapper/linux-dm:
  dm cache: fix bugs when a GFP_NOWAIT allocation fails
  dm snapshot: rework COW throttling to fix deadlock
  dm snapshot: introduce account_start_copy() and account_end_copy()
  dm clone: Make __hash_find static
This commit is contained in:
Linus Torvalds 2019-10-18 18:26:07 -04:00
commit fb8527e5c1
3 changed files with 81 additions and 45 deletions
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