gfs2: Make use of list_is_first

Use list_is_first() instead of open-coding it.

Signed-off-by: Andreas Gruenbacher <agruenba@redhat.com>

diff --git a/fs/gfs2/glock.c b/fs/gfs2/glock.c
index d368d9a..a12bb3e 100644 (file)
--- a/fs/gfs2/glock.c
+++ b/fs/gfs2/glock.c
@@ -542,7 +542,7 @@ restart:
                         * some reason. If this holder is the head of the list, it
                         * means we have a blocked holder at the head, so return 1.
                         */
-                       if (gh->gh_list.prev == &gl->gl_holders)
+                       if (list_is_first(&gh->gh_list, &gl->gl_holders))
                                return 1;
                        do_error(gl, 0);
                        break;