[PATCH 2/5] xfs: limit extent length for allocation to AG size

[Dave Chinner]

On Mon, Jan 24, 2011 at 04:02:52AM -0500, Christoph Hellwig wrote:
> > +	/*
> > +	 * The requested extent can be larger than an AG, so trim the block
> > +	 * count back to the maximum sized extent in an AG. A typical empty AG
> > +	 * consumes 1 block for headers, 1 block for each btree root (3) and 4
> > +	 * blocks for the free list.
> > +	 */
> > +	args.maxlen = MIN(ap->alen, mp->m_sb.sb_agblocks - 8);
> 
> Maybe add a define for the over head blocks to document it more clearly?
> 

Will do.

-- 
Dave Chinner
david at fromorbit.com