Btrfs: use find_or_create_page instead of grab_cache_page
grab_cache_page will use mapping_gfp_mask(), which for all inodes is set to
GFP_HIGHUSER_MOVABLE. So instead use find_or_create_page in all cases where we
need GFP_NOFS so we don't deadlock. Thanks,
Signed-off-by: Josef Bacik <josef@redhat.com>
diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 086b1e6..41d76c6 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2955,7 +2955,8 @@
page_cache_sync_readahead(inode->i_mapping,
ra, NULL, index,
last_index + 1 - index);
- page = grab_cache_page(inode->i_mapping, index);
+ page = find_or_create_page(inode->i_mapping, index,
+ GFP_NOFS);
if (!page) {
btrfs_delalloc_release_metadata(inode,
PAGE_CACHE_SIZE);