From mboxrd@z Thu Jan 1 00:00:00 1970 Received: by nz-out-0506.google.com with SMTP id s1so1117923nze for ; Mon, 29 Oct 2007 01:17:38 -0700 (PDT) Message-ID: <45a44e480710290117u492dbe82ra6344baf8bb1e370@mail.gmail.com> Date: Mon, 29 Oct 2007 01:17:37 -0700 From: "Jaya Kumar" Subject: Re: vm_ops.page_mkwrite() fails with vmalloc on 2.6.23 In-Reply-To: <20071029004002.60c7182a.akpm@linux-foundation.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <1193064057.16541.1.camel@matrix> <20071029004002.60c7182a.akpm@linux-foundation.org> Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: stefani@seibold.net, linux-kernel@vger.kernel.org, David Howells , linux-mm@kvack.org List-ID: On 10/29/07, Andrew Morton wrote: > On Mon, 22 Oct 2007 16:40:57 +0200 Stefani Seibold wrote: > > > > The problem original occurs with the fb_defio driver (driver/video/fb_defio.c). > > This driver use the vm_ops.page_mkwrite() handler for tracking the modified pages, > > which will be in an extra thread handled, to perform the IO and clean and > > write protect all pages with page_clean(). > > Hi, An aside, I just tested that deferred IO works fine on 2.6.22.10/pxa255. I understood from the thread that PeterZ is looking into page_mkclean changes which I guess went into 2.6.23. I'm also happy to help in any way if the way we're doing fb_defio needs to change. Thanks, jaya -- 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