Messages in this thread | | | Date | Wed, 26 Sep 2007 14:14:44 -0700 (PDT) | Subject | Re: [PATCH 4/4] dmapool: Improve memory usage for devices which can't cross boundaries | From | David Miller <> |
| |
From: Matthew Wilcox <willy@linux.intel.com> Date: Wed, 26 Sep 2007 15:01:19 -0400
> The previous implementation simply refused to allocate more than a > boundary's worth of data from an entire page. Some users didn't know > this, so specified things like SMP_CACHE_BYTES, not realising the > horrible waste of memory that this was. It's fairly easy to correct > this problem, just by ensuring we don't cross a boundary within a page. > This even helps drivers like EHCI (which can't cross a 4k boundary) > on machines with larger page sizes. > > Signed-off-by: Matthew Wilcox <willy@linux.intel.com>
This one looks good to me:
Acked-by: David S. Miller <davem@davemloft.net> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |