Re: [PATCH 3/3] Page Fault Scalability V20: Avoid lock for anonymous write fault

Christoph Hellwig
2005-04-29T21:02:40Z

On Fri, Apr 29, 2005 at 12:59:17PM -0700, Christoph Lameter wrote:
> Do not use the page_table_lock in do_anonymous_page. This will significantly
> increase the parallelism in the page fault handler for SMP systems. The patch
> also modifies the definitions of _mm_counter functions so that rss and anon_rss
> become atomic (and will use atomic64_t if available).

I thought we said all architectures should provide an atomic64_t (and
given that it's not actually 64bit on 32bit architecture we should
probably rename it to atomic_long_t)