GFS2: Use fs_<level> more often

Convert a couple of uses of pr_<level> to fs_<level>
Add and use fs_emerg.

Signed-off-by: Joe Perches <joe@perches.com>
Signed-off-by: Steven Whitehouse <swhiteho@redhat.com>

diff --git a/fs/gfs2/quota.c b/fs/gfs2/quota.c
index 73ed925..27f9435 100644
--- a/fs/gfs2/quota.c
+++ b/fs/gfs2/quota.c
@@ -1083,8 +1083,8 @@
 {
 	struct gfs2_sbd *sdp = qd->qd_gl->gl_sbd;
 
-	pr_info("fsid=%s: quota %s for %s %u\n",
-		sdp->sd_fsname, type,
+	fs_info(sdp, "quota %s for %s %u\n",
+		type,
 		(qd->qd_id.type == USRQUOTA) ? "user" : "group",
 		from_kqid(&init_user_ns, qd->qd_id));