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Mon, 18 Jul 2022 13:05:44 -0700 (PDT) X-Google-Smtp-Source: AGRyM1tLKMHp9LFS9QlTwR2X/hBPK05KZXy/GE/vv7U7TT8w1YlK+Zqs8a2TfSNyBuWr1HcNGIcs3w== X-Received: by 2002:a05:620a:d5b:b0:6b5:660b:2939 with SMTP id o27-20020a05620a0d5b00b006b5660b2939mr18229114qkl.30.1658174743980; Mon, 18 Jul 2022 13:05:43 -0700 (PDT) Received: from xz-m1.local ([74.12.30.48]) by smtp.gmail.com with ESMTPSA id y7-20020a05622a164700b0031eeecd21d6sm3018130qtj.69.2022.07.18.13.05.42 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 18 Jul 2022 13:05:43 -0700 (PDT) Date: Mon, 18 Jul 2022 16:05:38 -0400 From: Peter Xu To: Nadav Amit Cc: linux-mm@kvack.org, Andrew Morton , Nadav Amit , Mike Kravetz , Hugh Dickins , Axel Rasmussen , Mike Rapoport , David Hildenbrand Subject: Re: [PATCH v2 1/5] userfaultfd: introduce uffd_flags Message-ID: References: <20220718114748.2623-1-namit@vmware.com> <20220718114748.2623-2-namit@vmware.com> MIME-Version: 1.0 In-Reply-To: <20220718114748.2623-2-namit@vmware.com> X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com Content-Type: text/plain; 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cv=none; b=irO8RPaLO23HnCqgHzsFqxoccqZ8yfdtVLsuepFllWAMm7YuOLpHsS8Dau1QfBoaGVlLrJ JbfgnvL7raO7O+mN/aEPTDtjhPcNLNgvR2wyAoFNviGuSuwMCybSE134cfjFoul9rvXbJ8 6kMx0gKEVj6PNsKml8ZA7kgY3wRTy+Y= X-Stat-Signature: x69i7c4pg5cigzy4pizqp5jxz873bm3f X-Rspamd-Queue-Id: 5748A4008A X-Rspam-User: Authentication-Results: imf11.hostedemail.com; dkim=pass header.d=redhat.com header.s=mimecast20190719 header.b=Rwke15Ma; dmarc=pass (policy=none) header.from=redhat.com; spf=none (imf11.hostedemail.com: domain of peterx@redhat.com has no SPF policy when checking 170.10.133.124) smtp.mailfrom=peterx@redhat.com X-Rspamd-Server: rspam11 X-HE-Tag: 1658174746-22073 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000838, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: On Mon, Jul 18, 2022 at 04:47:44AM -0700, Nadav Amit wrote: > From: Nadav Amit > > As the next patches are going to introduce more information that needs > to be propagated regarding handled user requests, introduce uffd_flags > that would be used to propagate this information. > > Remove the unused UFFD_FLAGS_SET to avoid confusion in the constant > names. > > Introducing uffd flags also allows to avoid mm/userfaultfd from being > using uapi (e.g., UFFDIO_COPY_MODE_WP). > > Cc: Mike Kravetz > Cc: Hugh Dickins > Cc: Andrew Morton > Cc: Axel Rasmussen > Cc: Peter Xu > Cc: Mike Rapoport > Acked-by: David Hildenbrand > Signed-off-by: Nadav Amit Acked-by: Peter Xu -- Peter Xu