[PATCH 3.15-rc2] btrfs: replace error code from btrfs_drop_extents

There's a case which clone does not handle and used to BUG_ON instead, (testcase xfstests/btrfs/035), now returns EINVAL. This error code is confusing to the ioctl caller, as it normally signifies errorneous arguments. Change it to ENOPNOTSUPP which allows a fall back to copy instead of clone.

Re: [PATCH 3.15-rc2] btrfs: replace error code from btrfs_drop_extents

On Tue, Apr 15, 2014 at 11:50 AM, David Sterba dste...@suse.cz wrote: There's a case which clone does not handle and used to BUG_ON instead, (testcase xfstests/btrfs/035), now returns EINVAL. This error code is confusing to the ioctl caller, as it normally signifies errorneous arguments.