| Date | Thu, 1 May 2014 14:40:28 +0100 | From | Mel Gorman <> | Subject | Re: [PATCH 15/17] mm: Do not use unnecessary atomic operations when adding pages to the LRU |
| |
On Thu, May 01, 2014 at 09:33:40AM -0400, Johannes Weiner wrote: > On Thu, May 01, 2014 at 09:44:46AM +0100, Mel Gorman wrote: > > When adding pages to the LRU we clear the active bit unconditionally. As the > > page could be reachable from other paths we cannot use unlocked operations > > without risk of corruption such as a parallel mark_page_accessed. This > > patch test if is necessary to clear the atomic flag before using an atomic > > operation. In the unlikely even this races with mark_page_accesssed the > > event >
Will be corrected in v3. Thanks.
-- Mel Gorman SUSE Labs
|