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btrfs: fix wrong allocating flag when reading page

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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>
This commit is contained in:
Itaru Kitayama 2011-04-25 19:43:51 -04:00 committed by Chris Mason
parent a62f44a5f4
commit 43e817a1fd
1 changed files with 1 additions and 1 deletions
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2
fs/btrfs/extent_io.c
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@ -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);
}