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b=D92eRQ8q7AeKuT1F068VBIuSajn7M7DUTmkBMnNIPElPUydM/5BrqrbQ+zGgsOddG SjQlES7DNXnxJfP2cF+Tfbox7uadf+8N86jhGx4GiXQm2JoO9dakUCQr8jJ4+2ODw0 ZyvKyTZ3byQ59lYRByY0TryMqCkzImlA2yhXaCFizYONoynLLA3B7ixd4O2tHVvFOD OZ2/VfHN3K3DU5osYFz4RbjRDqvVQvKpQwpi2QTxxvs3hsOjllMuoz3bB4nMhx1Q/E f/9aJ8PEuQ8tBDhvdMyS/aJrrnE4PO51OF6oAnudORF9YdIL4eaEM/xnibOfhHVAsH fBg8NyoBI0BwQ== From: SeongJae Park To: Anshuman Khandual Cc: SeongJae Park , linux-mm@kvack.org, Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Mike Rapoport , linux-kernel@vger.kernel.org Subject: Re: [PATCH] mm: Replace READ_ONCE() in pud_trans_unstable() Date: Sat, 28 Feb 2026 09:01:26 -0800 Message-ID: <20260228170127.88672-1-sj@kernel.org> X-Mailer: git-send-email 2.47.3 In-Reply-To: <20260227040300.2091901-1-anshuman.khandual@arm.com> References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: D29A540015 X-Stat-Signature: fobt4s1os9zs5yx8m6h9kdkg8jt1wiu3 X-Rspam-User: X-Rspamd-Server: rspam05 X-HE-Tag: 1772298095-270514 X-HE-Meta: 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 ftWE8pjM uoji4y9ozEMPTL4ef6kGvsEhD/ajrrBc/dgTeTaHFWhhkASFkLSt2nJE3lCr/ZN0MXjZltHYXeHj20QGQID6z9LFKkynMBIANUwWZawkZfEiMy5t/qVKdO5PUWjMbYzrfNniovCWeuD+RGgiHxSJI7XFkjO7wYmis6ky3oofyQAq5p0yV2AAec4vIiLPqptbQIK/6j7kvgM3TEdwDlcSTVTXHHah67dZgTpMEyXl69N/7HkP8jzXnINVCYpXCHdkyBd59P+uAXE31cnfTz2fwDrbMYnSDj/FOR3YcELxg8jq4BwKu/Y75wwEMfhr0NBADIx+j//XcGMydh0OT3c4X0p+Hmnt1zEtdlJ7yxT8B3VmIOr9d6ptfQBlrhMBzz4J7C6HIeP9P9bESJi4KgHSmC0Z/kIW/f9/WtYpufRQ2Ant99Cs4HoIXD2rtMj+DDczKDhHG30yhBOm6dMlMA9JeWTGc4iBg/VSwPdVI Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Fri, 27 Feb 2026 04:03:00 +0000 Anshuman Khandual wrote: > Replace READ_ONCE() with the existing standard page table accessor for PUD > aka pudp_get() in pud_trans_unstable(). This does not create any functional > change for platforms that do not override pudp_get(), which still defaults > to READ_ONCE(). > > Cc: Andrew Morton > Cc: David Hildenbrand > Cc: Lorenzo Stoakes > Cc: Mike Rapoport > Cc: linux-mm@kvack.org > Cc: linux-kernel@vger.kernel.org > Signed-off-by: Anshuman Khandual Acked-by: SeongJae Park Thanks, SJ [...]