[32/93] NFS: Try to commit unstable writes in nfs_release_page()

From: Greg KH
Date: Fri Feb 19 2010 - 12:13:52 EST


2.6.32-stable review patch. If anyone has any objections, please let us know.

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

From: Trond Myklebust <Trond.Myklebust@xxxxxxxxxx>

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@xxxxxxxxxx>
Reviewed-by: Chuck Lever <chuck.lever@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxx>

---
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;


--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/