[PATCH 1/4] xfs: optimize AGFL refills

[Dave Chinner]

On Sun, Apr 24, 2011 at 03:06:14PM -0400, Christoph Hellwig wrote:
> While we need to make sure we do not reuse busy extents, there is no need
> to force out busy extents when moving them between the AGFL and the
> freespace btree as we still take care of that when doing the real allocation.
> 
> To avoid the log force when just moving extents from the different free
> space tracking structures, move the busy search out of
> xfs_alloc_get_freelist into the callers that need it, and move the busy
> list insert from xfs_free_ag_extent which is used both by AGFL refills
> and real allocation to xfs_free_extent, which is only used by the latter.
> 
> Signed-off-by: Christoph Hellwig <hch at lst.de>
> Reviewed-by: Alex Elder <aelder at sgi.com>

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

-- 
Dave Chinner
david at fromorbit.com