On Fri, May 17, 2013 at 10:48:04AM +0100, Mel Gorman wrote: > mark_page_accessed cannot activate an inactive page that is located on > an inactive LRU pagevec. Hints from filesystems may be ignored as a > result. In preparation for fixing that problem, this patch removes the > per-LRU pagevecs and leaves just one pagevec. The final LRU the page is > added to is deferred until the pagevec is drained. > > This means that fewer pagevecs are available and potentially there is > greater contention on the LRU lock. However, this only applies in the case > where there is an almost perfect mix of file, anon, active and inactive > pages being added to the LRU. In practice I expect that we are adding > stream of pages of a particular time and that the changes in contention > will barely be measurable. > > Signed-off-by: Mel Gorman <mgor...@suse.de> > Acked-by: Rik van Riel <r...@redhat.com>
Acked-by: Johannes Weiner <han...@cmpxchg.org> -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
