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| author |   Christoph Hellwig <hch@infradead.org> | 2011-12-06 21:58:19 +0000 |
|---|---|---|
| committer |   Ben Myers <bpm@sgi.com> | 2011-12-14 21:15:42 -0600 |
| commit | bf72de3194e73fa210a904b0bd951135286bb385 (patch) | |
| tree | 408ead179da91befd82e0cc23ed66830ead2fa59 /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | xfs: flatten the dquot lock ordering (diff) | |
| download | linux-dev-bf72de3194e73fa210a904b0bd951135286bb385.tar.xz linux-dev-bf72de3194e73fa210a904b0bd951135286bb385.zip | |
xfs: nest qm_dqfrlist_lock inside the dquot qlock
Allow xfs_qm_dqput to work without trylock loops by nesting the freelist lock
inside the dquot qlock. In turn that requires trylocks in the reclaim path
instead, but given it's a classic tradeoff between fast and slow path, and
we follow the model of the inode and dentry caches.
Document our new lock order now that it has settled.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
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