From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 31 Jul 2007 12:50:20 -0700 (PDT) From: Christoph Lameter Subject: Re: [rfc] [patch] mm: zone_reclaim fix for pseudo file systems In-Reply-To: <20070731124642.c43012cd.akpm@linux-foundation.org> Message-ID: References: <20070727232753.GA10311@localdomain> <20070730132314.f6c8b4e1.akpm@linux-foundation.org> <20070731000138.GA32468@localdomain> <20070730172007.ddf7bdee.akpm@linux-foundation.org> <20070731015647.GC32468@localdomain> <20070730192721.eb220a9d.akpm@linux-foundation.org> <20070730214756.c4211678.akpm@linux-foundation.org> <20070730221736.ccf67c86.akpm@linux-foundation.org> <20070730225809.ed0a95ff.akpm@linux-foundation.org> <20070730231806.da72a7ec.akpm@linux-foundation.org> <20070731124642.c43012cd.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: Ravikiran G Thirumalai , linux-mm@kvack.org, shai@scalex86.org List-ID: On Tue, 31 Jul 2007, Andrew Morton wrote: > They're different from Kiran's problem. Not specifically ramfs and > zone-reclaim isn't (obviously) involved. Yes, the solution is probably the > same one, but it'd be sad to "fix" Kiran's problem via finer-grained zone > accounting while leaving an undiscovered bug behind. Zone reclaim would not occur if the counters would accurately describing the unmapped pagecache pages that are presumably very easy to reclaim. Zone reclaim is not a full reclaim implementation. Its just superficial removal of easy to get pages. > If we're going further down that path we should aim at removing the > all_unreclaimable logic completely. I think that is doable if we account for the unreclaimable pages and move them off the LRU. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org