From bc4866b6e0b44f8ea0df22a16e5927714beb4983 Mon Sep 17 00:00:00 2001
From: Trond Myklebust <Trond.Myklebust@netapp.com>
Date: Mon, 4 Oct 2010 17:59:08 -0400
Subject: [PATCH] NFS: Don't SIGBUS if nfs_vm_page_mkwrite races with a cache
 invalidation

In the case where we lock the page, and then find out that the page has
been thrown out of the page cache, we should just return VM_FAULT_NOPAGE.
This is what block_page_mkwrite() does in these situations.

Signed-off-by: Trond Myklebust <Trond.Myklebust@netapp.com>
Cc: stable@kernel.org
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