GFS2: Check for glock already held in gfs2_getxattr

Since the introduction of atomic_open, gfs2_getxattr can be
called with the glock already held, so we need to allow for
this.

Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
Reported-by: David Teigland <teigland@redhat.com>
Tested-by: David Teigland <teigland@redhat.com>

1 files changed, 4 insertions, 0 deletions

diff --git a/fs/gfs2/inode.c b/fs/gfs2/inode.c
index a01b8fd3a1c1..64915eeae5a7 100644
--- a/fs/gfs2/inode.c
+++ b/fs/gfs2/inode.c
@@ -1750,6 +1750,10 @@ static ssize_t gfs2_getxattr(struct dentry *dentry, const char *name,
         struct gfs2_holder gh;
         int ret;
 
+        /* For selinux during lookup */
+        if (gfs2_glock_is_locked_by_me(ip->i_gl))
+                return generic_getxattr(dentry, name, data, size);
+
         gfs2_holder_init(ip->i_gl, LM_ST_SHARED, LM_FLAG_ANY, &gh);
         ret = gfs2_glock_nq(&gh);
         if (ret == 0) {