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From: Greg KH on 19 Feb 2010 12:20
2.6.32-stable review patch. If anyone has any objections, please let us know.

------------------

From: Trond Myklebust <Trond.Myklebust(a)netapp.com>

commit 82be934a59ff891cac598727e5a862ba2b9d1fac upstream.

If someone calls nfs_release_page(), we presumably already know that the
page is clean, however it may be holding an unstable write.

Signed-off-by: Trond Myklebust <Trond.Myklebust(a)netapp.com>
Reviewed-by: Chuck Lever <chuck.lever(a)oracle.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
fs/nfs/file.c | 2 ++
1 file changed, 2 insertions(+)

--- a/fs/nfs/file.c
+++ b/fs/nfs/file.c
@@ -486,6 +486,8 @@ static int nfs_release_page(struct page
{
dfprintk(PAGECACHE, "NFS: release_page(%p)\n", page);

+ if (gfp & __GFP_WAIT)
+ nfs_wb_page(page->mapping->host, page);
/* If PagePrivate() is set, then the page is not freeable */
if (PagePrivate(page))
return 0;


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