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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> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" 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 *vm= a); 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); =20 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 str= uct vm_fault *vmf) return VM_FAULT_RETRY; } =20 -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 =3D vmf->vma; =20 --=20 2.43.0