Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753363Ab0LOLW2 (ORCPT ); Wed, 15 Dec 2010 06:22:28 -0500 Received: from fxip-0047f.externet.hu ([88.209.222.127]:36808 "EHLO pomaz-ex.szeredi.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753302Ab0LOLW1 (ORCPT ); Wed, 15 Dec 2010 06:22:27 -0500 To: Hugh Dickins CC: miklos@szeredi.hu, akpm@linux-foundation.org, robert@swiecki.net, lkml20101129@newton.leun.net, linux-kernel@vger.kernel.org, linux-mm@kvack.org In-reply-to: (message from Hugh Dickins on Tue, 14 Dec 2010 20:32:49 -0800 (PST)) Subject: Re: kernel BUG at mm/truncate.c:475! References: <20101130194945.58962c44@xenia.leun.net> <20101201124528.6809c539@xenia.leun.net> <20101202084159.6bff7355@xenia.leun.net> <20101202091552.4a63f717@xenia.leun.net> <20101202115722.1c00afd5@xenia.leun.net> <20101203085350.55f94057@xenia.leun.net> <20101206204303.1de6277b@xenia.leun.net> <20101213142059.643f8080.akpm@linux-foundation.org> Message-Id: From: Miklos Szeredi Date: Wed, 15 Dec 2010 12:22:10 +0100 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 727 Lines: 18 On Tue, 14 Dec 2010, Hugh Dickins wrote: > I'd feel rather happier about it if I thought it would also fix > Robert's kernel BUG at /build/buildd/linux-2.6.35/mm/filemap.c:128! > but I've still not found time to explain that one. Me neither, all unmap_mapping_range() calls from shmfs are either with i_mutex or from evict_inode. Hmm, is there anything preventing remap_file_pages() installing a pte at an address that unmap_mapping_range() has already processed? Thanks, Miklos -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/