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| author | Dave Chinner <dchinner@redhat.com> | 2011-01-12 00:37:10 (GMT) |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2011-01-12 00:37:10 (GMT) |
| commit | 487f84f3f80bc6f00c59725e822653d3ec174b85 (patch) | |
| tree | d84117b479269b0a96a3041f67006d25b44300c3 /mm/mmu_context.c | |
| parent | 4c5cfd1b4157fb75d43b44a147c2feba6422fc4f (diff) | |
| download | linux-487f84f3f80bc6f00c59725e822653d3ec174b85.tar.xz | |
xfs: introduce xfs_rw_lock() helpers for locking the inode
We need to obtain the i_mutex, i_iolock and i_ilock during the read
and write paths. Add a set of wrapper functions to neatly
encapsulate the lock ordering and shared/exclusive semantics to make
the locking easier to follow and get right.
Note that this changes some of the exclusive locking serialisation in
that serialisation will occur against the i_mutex instead of the
XFS_IOLOCK_EXCL. This does not change any behaviour, and it is
arguably more efficient to use the mutex for such serialisation than
the rw_sem.
Signed-off-by: Dave Chinner <dchinner@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'mm/mmu_context.c')
0 files changed, 0 insertions, 0 deletions