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| author |   Dave Chinner <dchinner@redhat.com> | 2012-11-28 13:01:02 +1100 |
|---|---|---|
| committer |   Ben Myers <bpm@sgi.com> | 2012-11-29 14:24:03 -0600 |
| commit | b870553cdecb26d5291af09602352b763e323df2 (patch) | |
| tree | 4d7cfd6b3485d7e204003abc084245dc9a4e2ab5 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: fix direct IO nested transaction deadlock. (diff) | |
| download | linux-dev-b870553cdecb26d5291af09602352b763e323df2.tar.xz linux-dev-b870553cdecb26d5291af09602352b763e323df2.zip | |
xfs: fix stray dquot unlock when reclaiming dquots
When we fail to get a dquot lock during reclaim, we jump to an error
handler that unlocks the dquot. This is wrong as we didn't lock the
dquot, and unlocking it means who-ever is holding the lock has had
it silently taken away, and hence it results in a lock imbalance.
Found by inspection while modifying the code for the numa-lru
patchset. This fixes a random hang I've been seeing on xfstest 232
for the past several months.
cc: <stable@vger.kernel.org>
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions