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>

1 files changed, 2 insertions, 1 deletions

diff --git a/fs/btrfs/relocation.c b/fs/btrfs/relocation.c
index 086b1e6b8614..41d76c60876f 100644
--- a/fs/btrfs/relocation.c
+++ b/fs/btrfs/relocation.c
@@ -2955,7 +2955,8 @@ static int relocate_file_extent_cluster(struct inode *inode,
                         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);