diff options
| author | Christoph Hellwig <hch@lst.de> | 2016-11-30 14:33:25 +1100 |
|---|---|---|
| committer | Dave Chinner <david@fromorbit.com> | 2016-11-30 14:33:25 +1100 |
| commit | 6552321831dce87ff5c466a55b58d472732caadc (patch) | |
| tree | 84f3de7b89690c84fd13e2efa7a85d4918d342e3 /fs/xfs/xfs_dir2_readdir.c | |
| parent | f8319483f57f1ca22370f4150bb990aca7728a67 (diff) | |
| download | linux-6552321831dce87ff5c466a55b58d472732caadc.tar.bz2 | |
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/xfs/xfs_dir2_readdir.c')
| -rw-r--r-- | fs/xfs/xfs_dir2_readdir.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/fs/xfs/xfs_dir2_readdir.c b/fs/xfs/xfs_dir2_readdir.c index 29816981b50a..003a99b83bd8 100644 --- a/fs/xfs/xfs_dir2_readdir.c +++ b/fs/xfs/xfs_dir2_readdir.c @@ -677,7 +677,6 @@ xfs_readdir( args.dp = dp; args.geo = dp->i_mount->m_dir_geo; - xfs_ilock(dp, XFS_IOLOCK_SHARED); if (dp->i_d.di_format == XFS_DINODE_FMT_LOCAL) rval = xfs_dir2_sf_getdents(&args, ctx); else if ((rval = xfs_dir2_isblock(&args, &v))) @@ -686,7 +685,6 @@ xfs_readdir( rval = xfs_dir2_block_getdents(&args, ctx); else rval = xfs_dir2_leaf_getdents(&args, ctx, bufsize); - xfs_iunlock(dp, XFS_IOLOCK_SHARED); return rval; } |