[GFS2] trivial sparse lock annotations

Annotate the &sdp->sd_log_lock.

Signed-off-by: Harvey Harrison <harvey.harrison@gmail.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>
diff --git a/fs/gfs2/log.h b/fs/gfs2/log.h
index 7711528..7c64510 100644
--- a/fs/gfs2/log.h
+++ b/fs/gfs2/log.h
@@ -21,6 +21,7 @@
  */
 
 static inline void gfs2_log_lock(struct gfs2_sbd *sdp)
+__acquires(&sdp->sd_log_lock)
 {
 	spin_lock(&sdp->sd_log_lock);
 }
@@ -32,6 +33,7 @@
  */
 
 static inline void gfs2_log_unlock(struct gfs2_sbd *sdp)
+__releases(&sdp->sd_log_lock)
 {
 	spin_unlock(&sdp->sd_log_lock);
 }