Btrfs: return -ENOMEM in clear_extent_bit



The btrfs releasepage function depends on ENOMEM coming
back when it is called atomic.

Signed-off-by: Chris Mason <chris.mason@oracle.com>

parent 4cb5300b

fs/btrfs/extent_io.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -485,7 +485,8 @@ int clear_extent_bit(struct extent_io_tree *tree, u64 start, u64 end,
		again:
		if (!prealloc && (mask & __GFP_WAIT)) {
		prealloc = alloc_extent_state(mask);
		BUG_ON(!prealloc);
		if (!prealloc)
		return -ENOMEM;
		}

		spin_lock(&tree->lock);