linux-kernel - Re: [PATCH 14/14] mm: turn on vm_fault

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Message-ID: <20180516112813.GC20670@bombadil.infradead.org>
Date:   Wed, 16 May 2018 04:28:13 -0700
From:   Matthew Wilcox <willy@...radead.org>
To:     Christoph Hellwig <hch@....de>
Cc:     Souptick Joarder <jrdr.linux@...il.com>,
        linux-fsdevel@...r.kernel.org, linux-mm@...ck.org,
        linux-kernel@...r.kernel.org, devel@...ts.orangefs.org,
        ceph-devel@...r.kernel.org, linux-btrfs@...r.kernel.org,
        linux-ext4@...r.kernel.org, ocfs2-devel@....oracle.com,
        linux-mtd@...ts.infradead.org, dri-devel@...ts.freedesktop.org,
        lustre-devel@...ts.lustre.org,
        linux-arm-kernel@...ts.infradead.org, linux-s390@...r.kernel.org
Subject: Re: [PATCH 14/14] mm: turn on vm_fault_t type checking

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.