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authorChristoph Hellwig <hch@infradead.org>2013-12-07 00:30:15 +0400
committerBen Myers <bpm@sgi.com>2013-12-19 02:07:09 +0400
commit683cb941598d1d81283c940c100e0ce40f494105 (patch)
tree0bb287e4256cbd4fd1bcebfe765564ec3236b677 /fs/xfs
parentda51d32d4596a14ee33917b9eca056d4bf41706a (diff)
downloadlinux-683cb941598d1d81283c940c100e0ce40f494105.tar.xz
xfs: use xfs_ilock_attr_map_shared in xfs_attr_get
We might not have read in the extent list at this point, so make sure we take the ilock exclusively if we have to do so. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Dave Chinner <dchinner@redhat.com> Signed-off-by: Ben Myers <bpm@sgi.com>
Diffstat (limited to 'fs/xfs')
-rw-r--r--fs/xfs/xfs_attr.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/fs/xfs/xfs_attr.c b/fs/xfs/xfs_attr.c
index b86127072ac3..01b6a0102fbd 100644
--- a/fs/xfs/xfs_attr.c
+++ b/fs/xfs/xfs_attr.c
@@ -164,6 +164,7 @@ xfs_attr_get(
{
int error;
struct xfs_name xname;
+ uint lock_mode;
XFS_STATS_INC(xs_attr_get);
@@ -174,9 +175,9 @@ xfs_attr_get(
if (error)
return error;
- xfs_ilock(ip, XFS_ILOCK_SHARED);
+ lock_mode = xfs_ilock_attr_map_shared(ip);
error = xfs_attr_get_int(ip, &xname, value, valuelenp, flags);
- xfs_iunlock(ip, XFS_ILOCK_SHARED);
+ xfs_iunlock(ip, lock_mode);
return(error);
}