Commit 02ecd2c2 authored Oct 25, 2013 by Josef Bacik Committed by Chris Mason Nov 11, 2013

Btrfs: do not bug_on if we try to cow a free space cache inode



We can just return an error and we'll bail out properly.  We still want to catch
this case to make sure we don't have a bug somewhere, so just warn if this pops
up.  Thanks,

Signed-off-by: Josef Bacik <jbacik@fusionio.com>
Signed-off-by: Chris Mason <chris.mason@fusionio.com>

parent 0ef8b726

fs/btrfs/inode.c

+4 −1

Original line number	Diff line number	Diff line
		@@ -843,7 +843,10 @@ static noinline int cow_file_range(struct inode *inode,
		struct extent_map_tree *em_tree = &BTRFS_I(inode)->extent_tree;
		int ret = 0;

		BUG_ON(btrfs_is_free_space_inode(inode));
		if (btrfs_is_free_space_inode(inode)) {
		WARN_ON_ONCE(1);
		return -EINVAL;
		}

		num_bytes = ALIGN(end - start + 1, blocksize);
		num_bytes = max(blocksize, num_bytes);