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authorItaru Kitayama <kitayama@cl.bb4u.ne.jp>2011-04-25 19:43:51 -0400
committerChris Mason <chris.mason@oracle.com>2011-04-25 19:43:51 -0400
commit43e817a1fdda17f3357602ed7964c248c8c53ae0 (patch)
treea6064abb7f4a4eecc6c6fbbb37a0a53ede93c979
parenta62f44a5f47ce45e524b55f91542dc386c6de7ef (diff)
downloadlinux-43e817a1fdda17f3357602ed7964c248c8c53ae0.tar.gz
btrfs: fix wrong allocating flag when reading page
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 <kitayama@cl.bb4u.ne.jp> Signed-off-by: Miao Xie <miaox@cn.fujitsu.com> Signed-off-by: Chris Mason <chris.mason@oracle.com>
-rw-r--r--fs/btrfs/extent_io.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 5ae0bffaa4d..0d1196d6f78 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);
}