gfs2: Make go_instantiate take a glock

Make go_instantiate take a glock instead of a glock holder as its argument:
this handler is supposed to instantiate the object associated with the glock.

Signed-off-by: Andreas Gruenbacher <[email protected]>
diff --git a/fs/gfs2/rgrp.c b/fs/gfs2/rgrp.c
index 8a63870..5439bad 100644
--- a/fs/gfs2/rgrp.c
+++ b/fs/gfs2/rgrp.c
@@ -1196,9 +1196,8 @@ static void rgrp_set_bitmap_flags(struct gfs2_rgrpd *rgd)
  * Returns: errno
  */
 
-int gfs2_rgrp_go_instantiate(struct gfs2_holder *gh)
+int gfs2_rgrp_go_instantiate(struct gfs2_glock *gl)
 {
-	struct gfs2_glock *gl = gh->gh_gl;
 	struct gfs2_rgrpd *rgd = gl->gl_object;
 	struct gfs2_sbd *sdp = rgd->rd_sbd;
 	unsigned int length = rgd->rd_length;