From: Christoph Hellwig <hch@infradead.org>
Date: Fri, 6 Dec 2013 20:30:07 +0000 (-0800)
Subject: xfs: no need to lock the inode in xfs_find_handle
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=30ba7ad54335e4715d3cc9cc8f43cbf1b3535e46;p=linux-beck.git

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>
---

diff --git a/fs/xfs/xfs_ioctl.c b/fs/xfs/xfs_ioctl.c
index 33ad9a77791f..518aa56b8f2e 100644
--- a/fs/xfs/xfs_ioctl.c
+++ b/fs/xfs/xfs_ioctl.c
@@ -112,15 +112,11 @@ xfs_find_handle(
 		memset(&handle.ha_fid, 0, sizeof(handle.ha_fid));
 		hsize = sizeof(xfs_fsid_t);
 	} else {
-		int		lock_mode;
-
-		lock_mode = xfs_ilock_map_shared(ip);
 		handle.ha_fid.fid_len = sizeof(xfs_fid_t) -
 					sizeof(handle.ha_fid.fid_len);
 		handle.ha_fid.fid_pad = 0;
 		handle.ha_fid.fid_gen = ip->i_d.di_gen;
 		handle.ha_fid.fid_ino = ip->i_ino;
-		xfs_iunlock_map_shared(ip, lock_mode);
 
 		hsize = XFS_HSIZE(handle);
 	}