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Received: from 30.42.98.36(mailfrom:baolin.wang@linux.alibaba.com fp:SMTPD_---0X.Ombip_1774098136 cluster:ay36) by smtp.aliyun-inc.com; Sat, 21 Mar 2026 21:02:17 +0800 Message-ID: Date: Sat, 21 Mar 2026 21:02:16 +0800 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/6] change young flag check functions to return bool To: "Ritesh Harjani (IBM)" , 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, 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 References: From: Baolin Wang In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-Stat-Signature: 8998qsaegzsq6nyg7utnzweqwkxzj9rn X-Rspamd-Server: rspam09 X-Rspam-User: X-Rspamd-Queue-Id: 94AC2A0017 X-HE-Tag: 1774098145-913585 X-HE-Meta: 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 AYZ96O7d 3yDisXHGFsTqD2oWlzzd2udMKdgeY0KA7uRtNexJJLFGHEpw7/eQ8sCkyhYnmAxbCQVbRgB/NynyXpp7R6eCH+2PWp02eN8GDyzx+QMKz16Qvy4MMKQiNW+MbUYcbVRCYR/IC5wXeyijkc0lHUWMZAgGOIwgF0ZrHJjO++PhoI/t73wvKh67ztPmG1OO+/H8YiCwlZ1JaWZVvrTOT8GwjYo3bIfqVjznVV3I8KnXzo0tqWztRkQz14kWC1YAN+mrXBfJd2Pdbuy83gztNIOlnMBFc82wCTSxEZCzLwb90Xo4tyJLvCTfYEWsMHazdU6zNPscQQFMYiZhamHpeW/gsboYonfcG5fSVTHOU1NVW6fX4eSeRO53IBFiEh/ra8FIdJAg99Q1NCfy5+Ixkme+DYBIK1UgkrrSFS4aERCf4UvbETuxC7GcedNoNLA== Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On 3/21/26 1:31 PM, Ritesh Harjani (IBM) wrote: > 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. Really appreciate your help with testing!