From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with ESMTP id 57ED36B008C for ; Wed, 15 Dec 2010 06:22:30 -0500 (EST) 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: owner-linux-mm@kvack.org 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 List-ID: 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, 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 policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org