From f02e26f8d90f8cde98314c72c2e890bc281a8346 Mon Sep 17 00:00:00 2001
From: Christoph Hellwig <hch@tuxera.com>
Date: Tue, 23 Nov 2010 14:38:02 +0100
Subject: hfsplus: avoid useless work in hfsplus_sync_fs

There is no reason to write out the metadata inodes or volume headers
during a non-blocking sync, as we are almost guaranteed to dirty them
again during the inode writeouts.

Signed-off-by: Christoph Hellwig <hch@tuxera.com>

diff --git a/fs/hfsplus/super.c b/fs/hfsplus/super.c
index df6bea0..56e6cf8 100644
--- a/fs/hfsplus/super.c
+++ b/fs/hfsplus/super.c
@@ -160,6 +160,9 @@ int hfsplus_sync_fs(struct super_block *sb, int wait)
 	int write_backup = 0;
 	int error, error2;
 
+	if (!wait)
+		return 0;
+
 	dprint(DBG_SUPER, "hfsplus_write_super\n");
 
 	sb->s_dirt = 0;
-- 
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