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| author | Itaru Kitayama <kitayama@cl.bb4u.ne.jp> | 2011-04-25 19:43:51 -0400 |
|---|---|---|
| committer | Chris Mason <chris.mason@oracle.com> | 2011-04-25 19:43:51 -0400 |
| commit | 43e817a1fdda17f3357602ed7964c248c8c53ae0 (patch) | |
| tree | a6064abb7f4a4eecc6c6fbbb37a0a53ede93c979 | |
| parent | a62f44a5f47ce45e524b55f91542dc386c6de7ef (diff) | |
| download | lwn-43e817a1fdda17f3357602ed7964c248c8c53ae0.tar.gz lwn-43e817a1fdda17f3357602ed7964c248c8c53ae0.zip | |
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.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c index 5ae0bffaa4d8..0d1196d6f786 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); } |