[PATCH 3/5] xfs: always hold the iolock when calling xfs_change_file_space

[Dave Chinner]

On Sat, Oct 12, 2013 at 12:55:06AM -0700, Christoph Hellwig wrote:
> Currently fallocate always holds the iolock when calling into
> xfs_change_file_space, while the ioctl path lets some of the lower level
> functions take it, but leave it out in others.
> 
> This patch makes sure the ioctl path also always holds the iolock and
> thus introduces consistent locking for the preallocation operations while
> simplifying the code and allowing to kill the now unused XFS_ATTR_NOLOCK
> flag.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Looks good to me.

Reviewed-by: Dave Chinner <dchinner at redhat.com>

-- 
Dave Chinner
david at fromorbit.com