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author | Christoph Hellwig <hch@lst.de> | 2016-11-30 14:33:25 +1100 |
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committer | Dave Chinner <david@fromorbit.com> | 2016-11-30 14:33:25 +1100 |
commit | 6552321831dce87ff5c466a55b58d472732caadc (patch) | |
tree | 84f3de7b89690c84fd13e2efa7a85d4918d342e3 /fs/direct-io.c | |
parent | f8319483f57f1ca22370f4150bb990aca7728a67 (diff) | |
download | linux-6552321831dce87ff5c466a55b58d472732caadc.tar.gz linux-6552321831dce87ff5c466a55b58d472732caadc.tar.bz2 linux-6552321831dce87ff5c466a55b58d472732caadc.zip |
xfs: remove i_iolock and use i_rwsem in the VFS inode instead
This patch drops the XFS-own i_iolock and uses the VFS i_rwsem which
recently replaced i_mutex instead. This means we only have to take
one lock instead of two in many fast path operations, and we can
also shrink the xfs_inode structure. Thanks to the xfs_ilock family
there is very little churn, the only thing of note is that we need
to switch to use the lock_two_directory helper for taking the i_rwsem
on two inodes in a few places to make sure our lock order matches
the one used in the VFS.
Signed-off-by: Christoph Hellwig <hch@lst.de>
Tested-by: Jens Axboe <axboe@fb.com>
Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com>
Signed-off-by: Dave Chinner <david@fromorbit.com>
Diffstat (limited to 'fs/direct-io.c')
0 files changed, 0 insertions, 0 deletions