From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Wed, 02 Jul 2003 10:10:09 -0700 From: "Martin J. Bligh" Subject: Re: What to expect with the 2.6 VM Message-ID: <461030000.1057165809@flay> In-Reply-To: <20030702171159.GG23578@dualathlon.random> References: <20030701022516.GL3040@dualathlon.random> <20030702171159.GG23578@dualathlon.random> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Content-Disposition: inline Sender: owner-linux-mm@kvack.org Return-Path: To: Andrea Arcangeli , Mel Gorman Cc: Linux Memory Management List , Linux Kernel Mailing List List-ID: > the major reason you didn't mention for remap_file_pages is the rmap > avoidance. There's no rmap backing the remap_file_pages regions, so the > overhead per task is reduced greatly and the box stops running oom > (actually deadlocking for mainline thanks to the oom killer and NOFAIL > default behaviour). Maybe I'm just taking this out of context, and it's twisting my brain, but as far as I know, the nonlinear vma's *are* backed by pte_chains. That was the whole problem with objrmap having to do conversions, etc. Am I just confused for some reason? I was pretty sure that was right ... M. -- 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: aart@kvack.org