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Sat, 21 Mar 2026 04:31:48 -0700 (PDT) From: Ritesh Harjani (IBM) To: Baolin Wang , akpm@linux-foundation.org, david@kernel.org Cc: ljs@kernel.org, Liam.Howlett@oracle.com, vbabka@kernel.org, rppt@kernel.org, surenb@google.com, mhocko@suse.com, baolin.wang@linux.alibaba.com, linux-arm-kernel@lists.infradead.org, x86@kernel.org, linux-parisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, kvm@vger.kernel.org, open , linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/6] change young flag check functions to return bool In-Reply-To: Date: Sat, 21 Mar 2026 11:01:56 +0530 Message-ID: References: X-Mailing-List: linuxppc-dev@lists.ozlabs.org List-Id: List-Help: List-Owner: List-Post: List-Archive: , List-Subscribe: , , List-Unsubscribe: Precedence: list Baolin Wang writes: > This is a cleanup patchset to change all young flag check functions to > return bool, as discussed with David in the previous thread[1]. Since > callers only care about whether the young flag was set, returning bool > makes the intention clearer. No functional changes intended. > > Ran mm selftests on Arm64 and x86 machines, and no issues were found. > > Note that I only CC'd the arch mailing lists to avoid disturbing too > many people. > > [1] https://lore.kernel.org/all/d172d6bf-c60c-4cf5-9da9-f30de38cdfed@kernel.org/ > > Baolin Wang (6): > mm: change to return bool for ptep_test_and_clear_young() > mm: change to return bool for > ptep_clear_flush_young()/clear_flush_young_ptes() > mm: change to return bool for pmdp_test_and_clear_young() > mm: change to return bool for pmdp_clear_flush_young() > mm: change to return bool for pudp_test_and_clear_young() > mm: change to return bool for the MMU notifier's young flag check > > arch/arm64/include/asm/pgtable.h | 29 ++++---- > arch/arm64/mm/contpte.c | 8 +-- > arch/microblaze/include/asm/pgtable.h | 2 +- > arch/parisc/include/asm/pgtable.h | 8 +-- > arch/parisc/kernel/cache.c | 8 +-- > arch/powerpc/include/asm/book3s/32/pgtable.h | 4 +- > arch/powerpc/include/asm/book3s/64/pgtable.h | 26 +++---- > arch/powerpc/include/asm/nohash/64/pgtable.h | 2 +- > arch/powerpc/include/asm/nohash/pgtable.h | 4 +- > arch/powerpc/mm/book3s64/pgtable.c | 8 +-- I did compile and boot test on powerpc with various configs and overall it looks good. -ritesh