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Howlett" , Andrew Morton , David Hildenbrand , Lorenzo Stoakes , Shakeel Butt , Vlastimil Babka , kernel-team@meta.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org Subject: [RFC PATCH 13/16] mm/madvise: batch tlb flushes for process_madvise(MADV_FREE) Date: Wed, 5 Mar 2025 10:16:08 -0800 Message-Id: <20250305181611.54484-14-sj@kernel.org> X-Mailer: git-send-email 2.39.5 In-Reply-To: <20250305181611.54484-1-sj@kernel.org> References: <20250305181611.54484-1-sj@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspam-User: X-Stat-Signature: he73fin47nusmamq5hj79qnowp6915it X-Rspamd-Queue-Id: B276810000B X-Rspamd-Server: rspam07 X-HE-Tag: 1741198596-106597 X-HE-Meta: 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 VC7xX4IK 34afOaVCZy7Z7tkFl09DMy6VtAxW60/bqUIfJnTWIjqZUvbuTiCMPWbVs0fGu6wYPV3DENwe4Sfi344MYJ8DZvbSsPjsunTDHbeS4Q3v9Xx608+C4Y9eR4bW18NcylD0Ihwm2hajCP2cog1/krffTCbI8gKc8nv2oD1sObBVfSsUcCGMEV5/m6riIEl/FOlomhlYKmZtoqupD7KLjQs96foIbM6rpE5bU3344UMAwolM4gmutaNxNLFaCmowUNl7/Upxuq4cQT741XmUvV7ZZJIjCdg== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: MADV_FREE internal logic can be invoked with batching tlb flushes. Update vector_madvise(), which is called for process_madvise(), to use that in the efficient way, by passing an mmu_gather object that it initializes before starting the work, and flushing the tlb entries at once after all the internal works are done. Signed-off-by: SeongJae Park --- mm/madvise.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/mm/madvise.c b/mm/madvise.c index efa4184d6cf5..f1beadb6176a 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -968,7 +968,8 @@ static long madvise_dontneed_free(struct vm_area_struct *vma, return madvise_dontneed_single_vma( madv_behavior->tlb, vma, start, end); else if (behavior == MADV_FREE) - return madvise_free_single_vma(NULL, vma, start, end); + return madvise_free_single_vma( + madv_behavior->tlb, vma, start, end); else return -EINVAL; } -- 2.39.5