Btrfs: do not warn_on when we cannot alloc a page for an extent buffer

It's just annoying and the user will have gotten a nice OOM killer message
so they are already fully aware they are screwed :).  Thanks,

Reported-by: Jérôme Poulin <jeromepoulin@gmail.com>
Signed-off-by: Josef Bacik <jbacik@fusionio.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/fs/btrfs/extent_io.c b/fs/btrfs/extent_io.c
index 8c37cb64be7a..7dc69b38548d 100644
--- a/fs/btrfs/extent_io.c
+++ b/fs/btrfs/extent_io.c
@@ -4249,10 +4249,8 @@ struct extent_buffer *alloc_extent_buffer(struct extent_io_tree *tree,
 
         for (i = 0; i < num_pages; i++, index++) {
                 p = find_or_create_page(mapping, index, GFP_NOFS);
-                if (!p) {
-                        WARN_ON(1);
+                if (!p)
                         goto free_eb;
-                }
 
                 spin_lock(&mapping->private_lock);
                 if (PagePrivate(p)) {