Backport of patch from #547748 that is already in upstream.
Original patch adds some GFS checks to XFS checks in create_handle_list(),
but current RHEL-6 does not contain the checks for fro XFS. So ommiting them. 

diff --git a/mntopt.h b/mntopt.h
index ee375c4..1730340 100644
--- a/mntopt.h
+++ b/mntopt.h
@@ -18,6 +18,7 @@
 #define MNTTYPE_NFS4		"nfs4"	/* NFSv4 filesystem */
 #define MNTTYPE_MPFS		"mpfs"  /* EMC Celerra MPFS filesystem */
 #define MNTTYPE_OCFS2		"ocfs2"	/* Oracle Cluster filesystem */
+#define MNTTYPE_GFS2		"gfs2"	/* Red Hat Global filesystem 2 */
 
 /* mount options */
 #define MNTOPT_NOQUOTA		"noquota"	/* don't enforce quota */
diff --git a/quotacheck.c b/quotacheck.c
index b5f7e2e..3c56eee 100644
--- a/quotacheck.c
+++ b/quotacheck.c
@@ -1048,7 +1048,9 @@ static void check_all(void)
 	while ((mnt = get_next_mount())) {
 		if (flags & FL_ALL && flags & FL_NOROOT && !strcmp(mnt->mnt_dir, "/"))
 			continue;
-		if (!strcmp(mnt->mnt_type, MNTTYPE_XFS) || nfs_fstype(mnt->mnt_type) ||
+		if (!strcmp(mnt->mnt_type, MNTTYPE_XFS) ||
+		    !strcmp(mnt->mnt_type, MNTTYPE_GFS2) ||
+		    nfs_fstype(mnt->mnt_type) ||
 		    meta_qf_fstype(mnt->mnt_type)) {
 			debug(FL_DEBUG | FL_VERBOSE, _("Skipping %s [%s]\n"), mnt->mnt_fsname, mnt->mnt_dir);
 			continue;
diff --git a/quotaio.c b/quotaio.c
index d74a37d..0dd8324 100644
--- a/quotaio.c
+++ b/quotaio.c
@@ -73,7 +73,8 @@ struct quota_handle *init_io(struct mntent *mnt, int type, int fmt, int flags)
 #endif
 	}
 
-	if (!strcmp(mnt->mnt_type, MNTTYPE_XFS)) {	/* XFS filesystem? */
+	if (!strcmp(mnt->mnt_type, MNTTYPE_XFS) ||	/* XFS filesystem? */
+	    !strcmp(mnt->mnt_type, MNTTYPE_GFS2)) {	/* XFS filesystem? */
 		if (fmt != -1 && fmt != QF_XFS) {	/* User wanted some other format? */
 			errstr(_("Only XFS quota format is allowed on XFS filesystem.\n"));
 			goto out_handle;
diff --git a/quotaon.c b/quotaon.c
index eafadef..0e6e363 100644
--- a/quotaon.c
+++ b/quotaon.c
@@ -163,7 +163,10 @@ static int newstate(struct mntent *mnt, int type, char *extra)
 	if (flags & FL_ALL)
 		sflags |= STATEFLAG_ALL;
 
-	if (!strcmp(mnt->mnt_type, MNTTYPE_XFS)) {	/* XFS filesystem has special handling... */
+    if (!strcmp(mnt->mnt_type, MNTTYPE_GFS2)) {
+        errstr(_("Cannot change state of GFS2 quota.\n"));
+        return 1;
+    } else if (!strcmp(mnt->mnt_type, MNTTYPE_XFS)) {   /* XFS filesystem has special handling... */
 		if (!(kernel_formats & (1 << QF_XFS))) {
 			errstr(_("Cannot change state of XFS quota. It's not compiled in kernel.\n"));
 			return 1;
@@ -200,7 +203,8 @@ static int print_state(struct mntent *mnt, int type)
 {
 	int on = 0;
 
-	if (!strcmp(mnt->mnt_type, MNTTYPE_XFS)) {
+    if (!strcmp(mnt->mnt_type, MNTTYPE_XFS) ||
+        !strcmp(mnt->mnt_type, MNTTYPE_GFS2)) {
 		if (kernel_formats & (1 << QF_XFS))
 			on = kern_quota_on(mnt->mnt_fsname, type, 1 << QF_XFS) != -1;
 	}
diff --git a/quotasys.c b/quotasys.c
index 9a7f440..2ec23c4 100644
--- a/quotasys.c
+++ b/quotasys.c
@@ -82,7 +82,8 @@ static int correct_fstype(char *type)
 		    !strcmp(type, MNTTYPE_NFS) ||
 		    !strcmp(type, MNTTYPE_NFS4) ||
 		    !strcmp(type, MNTTYPE_OCFS2) ||
-		    !strcmp(type, MNTTYPE_MPFS)) {
+		    !strcmp(type, MNTTYPE_MPFS) ||
+		    !strcmp(type, MNTTYPE_GFS2)) {
 			free(mtype);
 			return 1;
 		}
@@ -481,7 +482,8 @@ int hasquota(struct mntent *mnt, int type, int flags)
 	if (!correct_fstype(mnt->mnt_type) || hasmntopt(mnt, MNTOPT_NOQUOTA))
 		return 0;
 	
-	if (!strcmp(mnt->mnt_type, MNTTYPE_XFS))
+	if (!strcmp(mnt->mnt_type, MNTTYPE_GFS2) ||
+	    !strcmp(mnt->mnt_type, MNTTYPE_XFS))
 		return hasxfsquota(mnt, type, flags);
 	if (nfs_fstype(mnt->mnt_type))	/* NFS always has quota or better there is no good way how to detect it */
 		return 1;