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b=Xp0I8n21lr/oh/1fyZjtCkraLJGJfkjbkamlq8icE+MNyykgTJm8mK+cCtsG9Su31 IViW5lB/u491Dwd9UKoLItqOts9bb6WPZiBaU5iYUt9GM/pzIUVM/LKy1qhY0Qk4ql NjrmnqCF0tcZewXQenlKO9rbPWp/hz0JwbRnvR3Hld4yuKTmzTvLfzbsq6U0//I1KJ Eh7jhQCsOwYfCsb8rLFpnQu+VHhIHUPz5hVPXpNSXi0VjZLBOKtHBAFVHYKeXdxoPg dzU7ijHO8/ZH2GCO0gLWnU/O7U+Cu682DdgAbvCSPM+Eb/XUbP5RSLtcc0VnOwr3pE FgRwhLWt7Kp0w== Date: Mon, 4 May 2026 09:59:37 +0200 From: Mike Rapoport To: "Kiryl Shutsemau (Meta)" Cc: akpm@linux-foundation.org, peterx@redhat.com, david@kernel.org, ljs@kernel.org, surenb@google.com, vbabka@kernel.org, Liam.Howlett@oracle.com, ziy@nvidia.com, corbet@lwn.net, skhan@linuxfoundation.org, seanjc@google.com, pbonzini@redhat.com, jthoughton@google.com, aarcange@redhat.com, sj@kernel.org, usama.arif@linux.dev, linux-mm@kvack.org, linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org, kvm@vger.kernel.org, kernel-team@meta.com Subject: Re: [PATCH 03/14] mm: rename uffd-wp PTE accessors to uffd Message-ID: References: <20260427114607.4068647-1-kas@kernel.org> <20260427114607.4068647-4-kas@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260427114607.4068647-4-kas@kernel.org> X-Rspamd-Server: rspam03 X-Rspamd-Queue-Id: E636EC0008 X-Stat-Signature: 4a3z6gn1gue6ckm4iayb786rkht9zezk X-Rspam-User: X-HE-Tag: 1777881586-267529 X-HE-Meta: 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 RNDdNMHA 1pV0AtZq5vQO9iVZdBNsUUKnRN4NF86to3dgjX18QdvlflCW2IhJhxGwMeUuOWNkYeh5leGFuJ7obU6iq+IQlbidT5K7lWHbaL8S9EdQE+8J2Sin6VQkrFvOuFn3vEXkFvgWCs5AaqcQEJvHM1POsejeBx8Huahx+RSZntAXincO/dRpxzkiSFo5pRKQAYcI7ynXRG2bZW6+0XkEginHlwONGPNA31kcfyzYJLNuNRbElOCLkZFWD0paBHsIC7iqIlrGW75lrKPJ/B/oQ2tiVNbQpo1ytH4AOv54pOfrG7wzZXLg= Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Mon, Apr 27, 2026 at 12:45:51PM +0100, Kiryl Shutsemau (Meta) wrote: > Userfaultfd RWP will reuse the uffd-wp PTE bit to mark access-tracking > PTEs, alongside the write-protected ones it already marks. The bit's > meaning now depends on the VMA flag (WP or RWP), not on its name. > > Rename the kernel-internal names that describe the bit: > > - pte/pmd/huge_pte accessors (and swap variants) > - pgtable_supports_uffd() capability query > - SCAN_PTE_UFFD khugepaged enum > > The ftrace string emitted by mm_khugepaged_scan_pmd for this enum is > kept as "pte_uffd_wp" so existing trace-based tooling keeps matching. > > Pure mechanical rename -- no behavior change. > > Signed-off-by: Kiryl Shutsemau > Assisted-by: Claude:claude-opus-4-6 Reviewed-by: Mike Rapoport (Microsoft) -- Sincerely yours, Mike.