fat: Check s_dirt in fat_sync_fs()

[safe/jmp/linux-2.6] / fs / fat / inode.c

diff --git a/fs/fat/inode.c b/fs/fat/inode.c
index 63a5c1a..a8a3afe 100644 (file)
--- a/fs/fat/inode.c
+++ b/fs/fat/inode.c
@@ -451,12 +451,16 @@ static void fat_write_super(struct super_block *sb)
 
 static int fat_sync_fs(struct super_block *sb, int wait)
 {
-       lock_super(sb);
-       fat_clusters_flush(sb);
-       sb->s_dirt = 0;
-       unlock_super(sb);
+       int err = 0;
 
-       return 0;
+       if (sb->s_dirt) {
+               lock_super(sb);
+               sb->s_dirt = 0;
+               err = fat_clusters_flush(sb);
+               unlock_super(sb);
+       }
+
+       return err;
 }
 
 static void fat_put_super(struct super_block *sb)