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linux-sg2042
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xfs: no need to lock the inode in xfs_find_handle 

Both the inode number and the generation do not change on a live inode.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Dave Chinner <dchinner@redhat.com>
Signed-off-by: Ben Myers <bpm@sgi.com>
This commit is contained in:
Christoph Hellwig 2013-12-06 12:30:07 -08:00 committed by Ben Myers
parent f9b395a8ef
commit 30ba7ad543
1 changed files with 0 additions and 4 deletions
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4
fs/xfs/xfs_ioctl.c
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@ -112,15 +112,11 @@ xfs_find_handle(
memset(&handle.ha_fid, 0, sizeof(handle.ha_fid)); memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
hsize = sizeof(xfs_fsid_t); hsize = sizeof(xfs_fsid_t);
} else { } else {
int lock_mode;
lock_mode = xfs_ilock_map_shared(ip);
handle.ha_fid.fid_len = sizeof(xfs_fid_t) - handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
sizeof(handle.ha_fid.fid_len); sizeof(handle.ha_fid.fid_len);
handle.ha_fid.fid_pad = 0; handle.ha_fid.fid_pad = 0;
handle.ha_fid.fid_gen = ip->i_d.di_gen; handle.ha_fid.fid_gen = ip->i_d.di_gen;
handle.ha_fid.fid_ino = ip->i_ino; handle.ha_fid.fid_ino = ip->i_ino;
xfs_iunlock_map_shared(ip, lock_mode);
hsize = XFS_HSIZE(handle); hsize = XFS_HSIZE(handle);
} }