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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 2c1740098c708b465e87637b237feb2fd98f129a upstream.

Not having an fscache cookie is perfectly valid if the user didn't mount
with the fscache option.

This patch fixes http://bugzilla.kernel.org/show_bug.cgi?id=15234

Signed-off-by: Trond Myklebust <Trond.Myklebust(a)netapp.com>
Acked-by: David Howells <dhowells(a)redhat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)suse.de>

---
fs/nfs/fscache.c | 9 ++++-----
1 file changed, 4 insertions(+), 5 deletions(-)

--- a/fs/nfs/fscache.c
+++ b/fs/nfs/fscache.c
@@ -354,12 +354,11 @@ void nfs_fscache_reset_inode_cookie(stru
*/
int nfs_fscache_release_page(struct page *page, gfp_t gfp)
{
- struct nfs_inode *nfsi = NFS_I(page->mapping->host);
- struct fscache_cookie *cookie = nfsi->fscache;
-
- BUG_ON(!cookie);
-
if (PageFsCache(page)) {
+ struct nfs_inode *nfsi = NFS_I(page->mapping->host);
+ struct fscache_cookie *cookie = nfsi->fscache;
+
+ BUG_ON(!cookie);
dfprintk(FSCACHE, "NFS: fscache releasepage (0x%p/0x%p/0x%p)\n",
cookie, page, nfsi);



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