From 06b43672a9e665cab18dc7b77d56d36884b90d45 Mon Sep 17 00:00:00 2001 From: Jeff Layton Date: Tue, 1 Jun 2010 10:54:45 -0400 Subject: [PATCH] cifs: fix page refcount leak Commit 315e995c63a15cb4d4efdbfd70fe2db191917f7a is causing OOM kills when stress-testing a CIFS filesystem. The VFS readpages operation takes a page reference. The older code just handed this reference off to the page cache, but the new code takes an extra one. The simplest fix is to put the new reference after add_to_page_cache_lru. Signed-off-by: Jeff Layton Acked-by: Nick Piggin Signed-off-by: Steve French --- fs/cifs/file.c | 1 + 1 file changed, 1 insertion(+) diff --git a/fs/cifs/file.c b/fs/cifs/file.c index f1ff785..75541af 100644 --- a/fs/cifs/file.c +++ b/fs/cifs/file.c @@ -1952,6 +1952,7 @@ static void cifs_copy_cache_pages(struct address_space *mapping, bytes_read -= PAGE_CACHE_SIZE; continue; } + page_cache_release(page); target = kmap_atomic(page, KM_USER0); -- 2.7.4