From ff17be0864777fe0dfb0a477868a8cb95c1ff90e Mon Sep 17 00:00:00 2001
From: Miklos Szeredi <mszeredi@suse.cz>
Date: Tue, 1 Oct 2013 16:44:53 +0200
Subject: [PATCH] fuse: writepage: skip already in flight

If ->writepage() tries to write back a page whose copy is still in flight,
then just skip by calling redirty_page_for_writepage().

This is OK, since now ->writepage() should never be called for data
integrity sync.

Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
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