Re: [PATCH] Align VM locks

Andrea Arcangeli (andrea@suse.de)
Thu, 16 Aug 2001 20:26:06 +0200


On Thu, Aug 16, 2001 at 06:41:08PM +0100, Mark Hemment wrote:
> Hi,
>
> The patch below ensures the pagecache_lock and pagemap_lru_lock aren't
> sharing an L1 cacheline with anyone else - espically each other!

This is the right one:

ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.8aa1/00_cachelinealigned-in-smp-1

Alan also merged it in -ac IIRC.

BTW, for your other patch you sent a few hours ago you forgot to drop
the KMAP entry that is wasting NR_CPUS*PAGE_SIZE of virtual address
space:

ftp://ftp.us.kernel.org/pub/linux/kernel/people/andrea/kernels/v2.4/2.4.8aa1/00_create_bounces-sleeps-1

Andrea
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