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, 2 deletions

diff --git a/fs/btrfs/ioctl.c b/fs/btrfs/ioctl.c
index a3c4751e07db..09c9a8d26ee9 100644
--- a/fs/btrfs/ioctl.c
+++ b/fs/btrfs/ioctl.c
@@ -867,8 +867,8 @@ again:
         /* step one, lock all the pages */
         for (i = 0; i < num_pages; i++) {
                 struct page *page;
-                page = grab_cache_page(inode->i_mapping,
-                                            start_index + i);
+                page = find_or_create_page(inode->i_mapping,
+                                            start_index + i, GFP_NOFS);
                 if (!page)
                         break;