lists.openwall.net | lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC | |
Open Source and information security mailing list archives
| ||
|
Date: Thu, 13 Dec 2012 10:41:04 +0000 From: Mel Gorman <mgorman@...e.de> To: Johannes Weiner <hannes@...xchg.org> Cc: Andrew Morton <akpm@...ux-foundation.org>, Rik van Riel <riel@...hat.com>, Michal Hocko <mhocko@...e.cz>, Hugh Dickins <hughd@...gle.com>, linux-mm@...ck.org, linux-kernel@...r.kernel.org Subject: Re: [patch 3/8] mm: vmscan: save work scanning (almost) empty LRU lists On Wed, Dec 12, 2012 at 04:43:35PM -0500, Johannes Weiner wrote: > In certain cases (kswapd reclaim, memcg target reclaim), a fixed > minimum amount of pages is scanned from the LRU lists on each > iteration, to make progress. > > Do not make this minimum bigger than the respective LRU list size, > however, and save some busy work trying to isolate and reclaim pages > that are not there. > > Signed-off-by: Johannes Weiner <hannes@...xchg.org> This looks like a corner case where the LRU size would have to be smaller than SWAP_CLUSTER_MAX. Is that common enough to care? It looks correct, I'm just curious. Acked-by: Mel Gorman <mgorman@...e.de> -- Mel Gorman SUSE Labs -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Powered by blists - more mailing lists