From mboxrd@z Thu Jan 1 00:00:00 1970 From: Miao Xie Subject: [PATCH V6 1/3] btrfs: fix wrong allocating flag when reading page Date: Fri, 22 Apr 2011 18:12:19 +0800 Message-ID: <4DB15483.6050907@cn.fujitsu.com> Reply-To: miaox@cn.fujitsu.com Mime-Version: 1.0 Content-Type: text/plain; charset=GB2312 Cc: Linux Btrfs , Itaru Kitayama To: Chris Mason Return-path: List-ID: From: Itaru Kitayama the space cache use extent_readpages() to read free space information, so we can not use GFP_KERNEL flag to allocate memory, or it may lead to deadlock. Signed-off-by: Itaru Kitayama Signed-off-by: Miao Xie --- fs/btrfs/extent_io.c | 2 +- 1 files changed, 1 insertions(+), 1 deletions(-) diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 5ae0bff..0d1196d 100644 --- a/fs/btrfs/extent_io.c +++ b/fs/btrfs/extent_io.c @@ -2681,7 +2681,7 @@ int extent_readpages(struct extent_io_tree *tree, prefetchw(&page->flags); list_del(&page->lru); if (!add_to_page_cache_lru(page, mapping, - page->index, GFP_KERNEL)) { + page->index, GFP_NOFS)) { __extent_read_full_page(tree, page, get_extent, &bio, 0, &bio_flags); } -- 1.7.4