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[174.95.95.253]) by smtp.gmail.com with ESMTPSA id w20sm4787394qki.102.2021.02.25.12.52.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 25 Feb 2021 12:52:51 -0800 (PST) Date: Thu, 25 Feb 2021 15:52:49 -0500 From: Peter Xu To: Axel Rasmussen Cc: Alexander Viro , Alexey Dobriyan , Andrea Arcangeli , Andrew Morton , Anshuman Khandual , Catalin Marinas , Chinwen Chang , Huang Ying , Ingo Molnar , Jann Horn , Jerome Glisse , Lokesh Gidra , "Matthew Wilcox (Oracle)" , Michael Ellerman , Michal =?utf-8?Q?Koutn=C3=BD?= , Michel Lespinasse , Mike Kravetz , Mike Rapoport , Nicholas Piggin , Shaohua Li , Shawn Anastasio , Steven Rostedt , Steven Price , Vlastimil Babka , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, Adam Ruprecht , Cannon Matthews , "Dr . David Alan Gilbert" , David Rientjes , Mina Almasry , Oliver Upton Subject: Re: [PATCH v8 5/6] userfaultfd: update documentation to describe minor fault handling Message-ID: <20210225205249.GB261488@xz-x1> References: <20210225002658.2021807-1-axelrasmussen@google.com> <20210225002658.2021807-6-axelrasmussen@google.com> MIME-Version: 1.0 In-Reply-To: <20210225002658.2021807-6-axelrasmussen@google.com> Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=peterx@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; charset=utf-8 Content-Disposition: inline X-Stat-Signature: c7yf4p1o17txsj81tuhhy6huuoi5a5ds X-Rspamd-Server: rspam02 X-Rspamd-Queue-Id: 04C34A000601 Received-SPF: none (redhat.com>: No applicable sender policy available) receiver=imf15; identity=mailfrom; envelope-from=""; helo=us-smtp-delivery-124.mimecast.com; client-ip=63.128.21.124 X-HE-DKIM-Result: pass/pass X-HE-Tag: 1614286375-569467 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Wed, Feb 24, 2021 at 04:26:57PM -0800, Axel Rasmussen wrote: > Reword / reorganize things a little bit into "lists", so new features / > modes / ioctls can sort of just be appended. > > Describe how UFFDIO_REGISTER_MODE_MINOR and UFFDIO_CONTINUE can be used > to intercept and resolve minor faults. Make it clear that COPY and > ZEROPAGE are used for MISSING faults, whereas CONTINUE is used for MINOR > faults. > > Signed-off-by: Axel Rasmussen Reviewed-by: Peter Xu -- Peter Xu