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Wed, 20 Aug 2025 17:07:41 +0800 From: Baolin Wang To: akpm@linux-foundation.org, hughd@google.com, david@redhat.com, lorenzo.stoakes@oracle.com Cc: ziy@nvidia.com, Liam.Howlett@oracle.com, npache@redhat.com, ryan.roberts@arm.com, dev.jain@arm.com, baohua@kernel.org, baolin.wang@linux.alibaba.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH 06/11] mm: khugepaged: allow khugepaged to check all shmem/file large orders Date: Wed, 20 Aug 2025 17:07:17 +0800 Message-ID: <4cad4cded3f19c667442ae4d89ec03452c42a7b5.1755677674.git.baolin.wang@linux.alibaba.com> X-Mailer: git-send-email 2.43.5 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: C0E75180010 X-Stat-Signature: mfsh9umg6kspn7j7pf77s7zhhyfidmh7 X-Rspam-User: X-HE-Tag: 1755680865-768692 X-HE-Meta: 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 4Ql8AFuK ZSol+amC92rsOHIccKos3MFujfXfcZjq6tUig9kpJqGXmPZRW+doJj/InxNC+xbgC6g0Yym9AB7VROQzu96x6eTFAEkx97sU0KkOVBPghMMAiz6Yx5fwPxUqb8T1NGW274YZjywwkd7+x4zTZsTmdj1JrMWliuudFco7X+ZtsGqn1nk2lKm58fKp6PxRMjwEXPibe3dz5Oe0QwmGgSIUtDB2RcGrUXfBqEgmOoHaRxXeR2uC5ZhgRm0stsjwCorKm8bMzXLIcUJPAKf2jYMMueDCeQcVgfD3fz1We 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: We are now ready to enable shmem/file mTHP collapse, allowing thp_vma_allowable_orders() to check all permissible file large orders. Signed-off-by: Baolin Wang --- mm/khugepaged.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/mm/khugepaged.c b/mm/khugepaged.c index eb0b433d6ccb..d5ae2e6c4107 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -496,7 +496,7 @@ void khugepaged_enter_vma(struct vm_area_struct *vma, if (!mm_flags_test(MMF_VM_HUGEPAGE, vma->vm_mm) && hugepage_enabled()) { unsigned long orders = vma_is_anonymous(vma) ? - THP_ORDERS_ALL_ANON : BIT(PMD_ORDER); + THP_ORDERS_ALL_ANON : THP_ORDERS_ALL_FILE_DEFAULT; if (thp_vma_allowable_orders(vma, vm_flags, TVA_KHUGEPAGED, orders)) @@ -2780,7 +2780,7 @@ static unsigned int collapse_scan_mm_slot(unsigned int pages, int *result, vma_iter_init(&vmi, mm, khugepaged_scan.address); for_each_vma(vmi, vma) { unsigned long orders = vma_is_anonymous(vma) ? - THP_ORDERS_ALL_ANON : BIT(PMD_ORDER); + THP_ORDERS_ALL_ANON : THP_ORDERS_ALL_FILE_DEFAULT; unsigned long hstart, hend; cond_resched(); -- 2.43.5