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[73.170.51.167]) by smtp.googlemail.com with ESMTPSA id x16-20020aa784d0000000b006e13a5ab1e5sm5317803pfn.73.2024.02.20.15.17.55 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 20 Feb 2024 15:17:55 -0800 (PST) From: "Vishal Moola (Oracle)" To: linux-mm@kvack.org Cc: linux-kernel@vger.kernel.org, akpm@linux-foundation.org, muchun.song@linux.dev, "Vishal Moola (Oracle)" Subject: [PATCH 1/3] mm/memory: Change vmf_anon_prepare() to be non-static Date: Tue, 20 Feb 2024 15:14:22 -0800 Message-ID: <20240220231424.126600-2-vishal.moola@gmail.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240220231424.126600-1-vishal.moola@gmail.com> References: <20240220231424.126600-1-vishal.moola@gmail.com> MIME-Version: 1.0 X-Rspam-User: X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 45A9AA0012 X-Stat-Signature: c6h3wf1qgxhpfcqit667ns6uhkxjstrd X-HE-Tag: 1708471077-511633 X-HE-Meta: U2FsdGVkX1/xjhZnf8h8tB/BZEBw3Ykq9OB4uX/h/DqnaxOkUFPoDGIuzBZ4aL/WZppVxhbF5sDKvJikjc7RxGSpPATL4ZnqTJhTQBg8elujoI0W6czXN2apA55z5b14e0ECEuv/vUm8JShbV78GxZmmdJ+WUODmfPc4vx6q2EqATn86UnuK2xHcMOfTNEQBFKM7OIRipovECSfk3FY9328lJz/fzBaunrow7YCyHvigSsN7Ik94Jw1lFTlZ2BHVKl0ojMZ3L6XCk2Q2aifuAE6bjYxRYHavj1CBmcpTSrVFBlgIpChrkGeJiQhYl2ie6hOStgnTL2/b0h5hc8yQSwZUfoQC1v3Q11KCABQBKH2NvbhBcip4lgje30lJYSx1stxSN+ljpW+epgGxmBr9j0PQvuy6PSyZBYmFuVd/33XAcA1vYD7SzkCXHn7DS+ZRwIcN8UUoH4nE95I53lK3t7MsZejJLAThsnqrJwf7VtFoE/xzlGX38B+b5QJY7Kcw3U3nQA0TjVIPe5XBo+ws7+uJ60UEzXFcRQSk9sXr56i9F+zw6lnttR85pp4NXP2LODRvHFdo0a2ETBwJpgok+erWhgTddMSuZXUy11JdI0wOY/FUnjiPubqRk2G3RR++kdE9++AKvAAZQSA1mEr+QlAYAXyjy1w8xWT7XErfMUQjSKoqkCvNdDVEgedybNPZri6GtPduS5BBeP6TgXJM1BswVE6/4UoNL27qBQ2AQXA35T7pGN6uhPwWO4b2fAznGElIXDnUGtNTtG1pSuhv78euzOFaR+sk0Z+JuFrN5oQ8SfCZP3rTqXNKlpNqEm7pRqMp7R77ZATZAPCjh3uzT/Q0OSO9TpzJkZfeLgI/IfGR7p1j9EA050VPlSirM4o0h5Czu/fyy5vxyqJmzKATvqtjryxBns4e4mO893FlAR32QwNTlR1JVTwRsgyp8nn58Hs4N7Z3X9sstOmgFBr wZuILBfo J54sdv+/HFWhhC/UYMD547rrxu6hWmNEnzCgwQ7zMPRSqc/ro7w1eOm6mqoXEnbRHdCbdYLHSH7/sCSEPlgBOk+8t4apb9RxdwEn7QXzg3Z9z1HnZAxHnVl0WaLWCUt0SKxtwhvw7j8CZOb4SVfD3pwz4JE2pFlMpytnC+bqP39eU5HiEhYeEvtDwm3TXYa597tib0HeWYZgR4wW1wsuGKw3o/EBoqMWBlV4gGjOnH55hk4fvjFRRKVeNElkaJ1QfAL/31zwSWUeDiJI= 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: In order to handle hugetlb faults under the VMA lock, hugetlb can use vmf_anon_prepare() to ensure we can safely prepare an anon_vma. Change it to be a non-static function so it can be used within hugetlb as well. Signed-off-by: Vishal Moola (Oracle) --- include/linux/hugetlb.h | 1 + mm/memory.c | 2 +- 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index c1ee640d87b1..9b45edb6e303 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -272,6 +272,7 @@ void hugetlb_vma_unlock_write(struct vm_area_struct *vma); int hugetlb_vma_trylock_write(struct vm_area_struct *vma); void hugetlb_vma_assert_locked(struct vm_area_struct *vma); void hugetlb_vma_lock_release(struct kref *kref); +vm_fault_t vmf_anon_prepare(struct vm_fault *vmf); int pmd_huge(pmd_t pmd); int pud_huge(pud_t pud); diff --git a/mm/memory.c b/mm/memory.c index 89bcae0b224d..c93b058adfb2 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3081,7 +3081,7 @@ static inline vm_fault_t vmf_can_call_fault(const struct vm_fault *vmf) return VM_FAULT_RETRY; } -static vm_fault_t vmf_anon_prepare(struct vm_fault *vmf) +vm_fault_t vmf_anon_prepare(struct vm_fault *vmf) { struct vm_area_struct *vma = vmf->vma;