From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx161.postini.com [74.125.245.161]) by kanga.kvack.org (Postfix) with SMTP id 1513F6B004D for ; Fri, 9 Dec 2011 14:53:39 -0500 (EST) From: Andi Kleen Subject: Re: XFS causing stack overflow References: <20111209115513.GA19994__23079.9863501035$1323435203$gmane$org@infradead.org> Date: Fri, 09 Dec 2011 11:53:36 -0800 In-Reply-To: <20111209115513.GA19994__23079.9863501035$1323435203$gmane$org@infradead.org> (Christoph Hellwig's message of "Fri, 9 Dec 2011 06:55:13 -0500") Message-ID: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-linux-mm@kvack.org List-ID: To: Christoph Hellwig Cc: "Ryan C. England" , linux-mm@kvack.org, xfs@oss.sgi.com Christoph Hellwig writes: > > You probably have only a third of the stack actually used by XFS, the > rest is from NFSD/writeback code and page reclaim. I don't think any > of this is easily fixable in a 2.6.32 codebase. Current mainline 3.2-rc > now has the I/O-less balance dirty pages which will basically split the > stack footprint in half, but it's an invasive change to the writeback > code that isn't easily backportable. An easy fix would be 16k stacks. Don't think they're that difficult to do, but would need a special binary. -Andi -- ak@linux.intel.com -- Speaking for myself only -- 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/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org