[PATCH 0/2] xfs: extent swap fixes

[Dave Chinner <david@xxxxxxxxxxxxx>]

Hi folks,

The extent swap code is not symmetrical, so correct behaviour is
dependent on userspace doing the right thing. If we try to swap
extents with the temporary inode in the wrong state we can have
interesting failures. These two patches fix those issues and treat
the two files identically in terms of the state of the data
contained in the files being swapped. Failure to write or remove all
cached data from either file will now cause the swap extents
operation to fail.

Comments, thoughts?

Cheers,

Dave.