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[209.132.180.67]) by mx.google.com with ESMTP id i9-v6si1810695pgq.131.2018.05.16.04.30.05; Wed, 16 May 2018 04:30:20 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) client-ip=209.132.180.67; Authentication-Results: mx.google.com; dkim=fail header.i=@infradead.org header.s=bombadil.20170209 header.b=nlsRj+nj; spf=pass (google.com: best guess record for domain of linux-kernel-owner@vger.kernel.org designates 209.132.180.67 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752594AbeEPL2R (ORCPT + 99 others); Wed, 16 May 2018 07:28:17 -0400 Received: from bombadil.infradead.org ([198.137.202.133]:34442 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752095AbeEPL2P (ORCPT ); Wed, 16 May 2018 07:28:15 -0400 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Transfer-Encoding :Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id:List-Help: List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=notfj5P4gnOkQrWjpxAxjrfochYs8Ni5p6DSIuDNz40=; b=nlsRj+nj+kEwAWiNZ6805hstu9 Jz41qK+FZJVonrq2lI+T2CiQo8GARoWs1UI6niGlUghsqlWT/lYBGibPzf6KBVi699678XhMrTogA S/HP/ObCd7rR95ASslIkq8IOe06U6VqVoKz8nyRZXbQt30EbNfDFWXb8wmzfbn237gQhG64BG8TOJ tDLNRhDQ7bgksWaeqfJtz2teEggh4tbxEVWyar5V2LBO62vjI6O2NMqb0jRTmOopytjkxvGA+3Ot4 oFz+IpXzUTDG7thJMoMB+zXUzA2nXnvtIMCsxpfv1tPxazmzI4oYpgID4DNzUXLHBIdSSfJLiENtP oMTqGJPg==; Received: from willy by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1fIubO-0006MW-4J; Wed, 16 May 2018 11:28:14 +0000 Date: Wed, 16 May 2018 04:28:13 -0700 From: Matthew Wilcox To: Christoph Hellwig Cc: Souptick Joarder , linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, devel@lists.orangefs.org, ceph-devel@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-ext4@vger.kernel.org, ocfs2-devel@oss.oracle.com, linux-mtd@lists.infradead.org, dri-devel@lists.freedesktop.org, lustre-devel@lists.lustre.org, linux-arm-kernel@lists.infradead.org, linux-s390@vger.kernel.org Subject: Re: [PATCH 14/14] mm: turn on vm_fault_t type checking Message-ID: <20180516112813.GC20670@bombadil.infradead.org> References: <20180516054348.15950-1-hch@lst.de> <20180516054348.15950-15-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20180516054348.15950-15-hch@lst.de> User-Agent: Mutt/1.9.2 (2017-12-15) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, May 16, 2018 at 07:43:48AM +0200, Christoph Hellwig wrote: > Switch vm_fault_t to point to an unsigned int with __bіtwise annotations. > This both catches any old ->fault or ->page_mkwrite instance with plain > compiler type checking, as well as finding more intricate problems with > sparse. Come on, Christoph; you know better than this. This patch is completely unreviewable. Split it into one patch per maintainer tree, and in any event, the patch to convert vm_fault_t to an unsigned int should be separated from all the trivial conversions.