[PATCH v3] xfs: add FITRIM support

[Dave Chinner]

On Fri, Jan 07, 2011 at 08:02:04AM -0500, Christoph Hellwig wrote:
> Allow manual discards from userspace using the FITRIM ioctl.  This is not
> intended to be run during normal workloads, as the freepsace btree walks
> can cause large performance degradation.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>

Looks good.

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

-- 
Dave Chinner
david at fromorbit.com