[PATCH] xfs: truncate_setsize should be outside transactions

[Christoph Hellwig]

On Fri, May 02, 2014 at 08:39:39AM +1000, Dave Chinner wrote:
> This issue with xfs_setattr_size() was introduced back in 2010 by
> commit fa9b227 ("xfs: new truncate sequence") which moved the page
> cache truncate from outside the transaction context (what was
> xfs_itruncate_data()) to inside the transaction context as a call to
> truncate_setsize().

And it was moved because we should only call truncate_setsize once
the truncate can't fail any more.  So to move it out of transaction
context it needs to move after the commit of the transaction(s).