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Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKN6v-0001MT-TO; Mon, 21 Sep 2020 14:48:09 +0000 Date: Mon, 21 Sep 2020 15:48:09 +0100 From: Matthew Wilcox To: Christoph Hellwig Subject: Re: [PATCH 02/11] mm: call import_iovec() instead of rw_copy_check_uvector() in process_vm_rw() Message-ID: <20200921144809.GV32101@casper.infradead.org> References: <20200921143434.707844-1-hch@lst.de> <20200921143434.707844-3-hch@lst.de> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <20200921143434.707844-3-hch@lst.de> X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-aio@kvack.org, linux-mips@vger.kernel.org, David Howells , linux-mm@kvack.org, keyrings@vger.kernel.org, sparclinux@vger.kernel.org, linux-arch@vger.kernel.org, linux-s390@vger.kernel.org, linux-scsi@vger.kernel.org, Arnd Bergmann , linux-block@vger.kernel.org, Alexander Viro , io-uring@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Jens Axboe , linux-parisc@vger.kernel.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, linux-security-module@vger.kernel.org, David Laight , linux-fsdevel@vger.kernel.org, Andrew Morton , linuxppc-dev@lists.ozlabs.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Mon, Sep 21, 2020 at 04:34:25PM +0200, Christoph Hellwig wrote: > { > - WARN_ON(direction & ~(READ | WRITE)); > + WARN_ON(direction & ~(READ | WRITE | CHECK_IOVEC_ONLY)); This is now a no-op because: include/linux/fs.h:#define CHECK_IOVEC_ONLY -1 I'd suggest we renumber it to 2? (READ is 0, WRITE is 1. This WARN_ON should probably be WARN_ON(direction > CHECK_IOVEC_ONLY) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel