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[156.34.48.30]) by smtp.gmail.com with ESMTPSA id w94sm5260212qte.19.2020.06.12.12.33.27 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Fri, 12 Jun 2020 12:33:27 -0700 (PDT) Received: from jgg by mlx with local (Exim 4.93) (envelope-from ) id 1jjpQd-006lke-CN; Fri, 12 Jun 2020 16:33:27 -0300 Date: Fri, 12 Jun 2020 16:33:27 -0300 From: Jason Gunthorpe To: Ralph Campbell Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org, Jerome Glisse , John Hubbard , Christoph Hellwig , Andrew Morton Subject: Re: [PATCH] mm/hmm: remove redundant check non_swap_entry() Message-ID: <20200612193327.GZ6578@ziepe.ca> References: <20200612192618.32579-1-rcampbell@nvidia.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20200612192618.32579-1-rcampbell@nvidia.com> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Fri, Jun 12, 2020 at 12:26:18PM -0700, Ralph Campbell wrote: > In zap_pte_range(), the check for non_swap_entry() and > is_device_private_entry() is redundant since the latter is a subset of the > former. Remove the redundant check to simplify the code and for clarity. > > Signed-off-by: Ralph Campbell > > This is based on the current linux tree and is intended for Andrew's mm > tree. There is no rush so it could go into 5.9 but I think it is safe > enough to go into an rc after the patch is reviewed. Probably shouldn't mark it as mm/hmm if Andrew is going to pick it Reviewed-by: Jason Gunthorpe Jason