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

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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>
This commit is contained in:
Josef Bacik 2013-10-25 16:19:08 -04:00 committed by Chris Mason
parent 0ef8b72607
commit 02ecd2c278
1 changed files with 4 additions and 1 deletions
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5
fs/btrfs/inode.c
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@ -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);