| Date | Tue, 30 Mar 2010 15:58:04 -0700 | From | Greg KH <> | Subject | [62/89] NFS: Fix a bug in nfs_fscache_release_page() |
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2.6.31-stable review patch. If anyone has any objections, please let us know.
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From: Trond Myklebust <Trond.Myklebust@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@netapp.com> Acked-by: David Howells <dhowells@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- fs/nfs/fscache.c | 21 ++++++++++----------- 1 file changed, 10 insertions(+), 11 deletions(-)
--- a/fs/nfs/fscache.c +++ b/fs/nfs/fscache.c @@ -337,21 +337,20 @@ 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 (fscache_check_page_write(cookie, page)) { - if (!(gfp & __GFP_WAIT)) - return 0; - fscache_wait_on_page_write(cookie, page); - } - 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); + if (fscache_check_page_write(cookie, page)) { + if (!(gfp & __GFP_WAIT)) + return 0; + fscache_wait_on_page_write(cookie, page); + } + fscache_uncache_page(cookie, page); nfs_add_fscache_stats(page->mapping->host, NFSIOS_FSCACHE_PAGES_UNCACHED, 1);
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