Commit 43e817a1 authored Apr 25, 2011 by Itaru Kitayama Committed by Chris Mason Apr 25, 2011

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>

parent a62f44a5

fs/btrfs/extent_io.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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);
		}