NFSv4.1/pnfs: Fix atomicity of commit list updates

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pnfs_layout_mark_request_commit() needs to ensure that it adds the
request to the commit list atomically with all the other updates
in order to prevent corruption to buckets[ds_commit_idx].wlseg
due to races with pnfs_generic_clear_request_commit().

Fixes: 338d00cfef ("pnfs: Refactor the *_layout_mark_request_commit...")
Cc: stable@vger.kernel.org # v4.0+
Signed-off-by: Trond Myklebust <trond.myklebust@primarydata.com>

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This commit is contained in:

Trond Myklebust 2015-07-31 16:24:30 -04:00

parent 74d33293e4

commit 86d80f9734

3 changed files with 37 additions and 12 deletions

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15

fs/nfs/internal.h

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5

fs/nfs/pnfs_nfs.c

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29

fs/nfs/write.c

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