X-Git-Url: http://pileus.org/git/?a=blobdiff_plain;ds=sidebyside;f=fs%2Fsync.c;h=92b228176f7cb05f4be58aabcae02e6ffb0b832d;hb=fed0a9c644c7872f5bcaeb87a71103aef8e96761;hp=fc5c3d75cf3c736a7255b2101d1169786753f634;hpb=1f10cd34d9b347106cb34ef91c8ff76f12ee67a8;p=~andy%2Flinux

diff --git a/fs/sync.c b/fs/sync.c
index fc5c3d75cf3..92b228176f7 100644
--- a/fs/sync.c
+++ b/fs/sync.c
@@ -14,6 +14,7 @@
 #include <linux/pagemap.h>
 #include <linux/quotaops.h>
 #include <linux/buffer_head.h>
+#include <linux/backing-dev.h>
 #include "internal.h"
 
 #define VALID_FLAGS (SYNC_FILE_RANGE_WAIT_BEFORE|SYNC_FILE_RANGE_WRITE| \
@@ -32,7 +33,7 @@ static int __sync_filesystem(struct super_block *sb, int wait)
 	 * This should be safe, as we require bdi backing to actually
 	 * write out data in the first place
 	 */
-	if (!sb->s_bdi)
+	if (!sb->s_bdi || sb->s_bdi == &noop_backing_dev_info)
 		return 0;
 
 	if (sb->s_qcop && sb->s_qcop->quota_sync)