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_super.c | |
| parent | f8319483f57f1ca22370f4150bb990aca7728a67 (diff) | |
| download | lwn-6552321831dce87ff5c466a55b58d472732caadc.tar.gz lwn-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/xfs/xfs_super.c')
| -rw-r--r-- | fs/xfs/xfs_super.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/xfs/xfs_super.c b/fs/xfs/xfs_super.c index ade4691e3f74..563d1d146b8c 100644 --- a/fs/xfs/xfs_super.c +++ b/fs/xfs/xfs_super.c @@ -943,7 +943,7 @@ xfs_fs_destroy_inode( trace_xfs_destroy_inode(ip); - ASSERT(!rwsem_is_locked(&ip->i_iolock.mr_lock)); + ASSERT(!rwsem_is_locked(&inode->i_rwsem)); XFS_STATS_INC(ip->i_mount, vn_rele); XFS_STATS_INC(ip->i_mount, vn_remove); |