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AJvYcCUzqR5v5HL8yNfwVzzvVGM/shN2KYRmPxutuYGU+0YwtaVzwVjhuxFZOm7r5JVFcB9KSXINyF+1iQ==@kvack.org X-Gm-Message-State: AOJu0YyZBuR+M34mojVYBdC8iyALeVNA6+98UkH/2CmFwuHKmdSWRiDU NEKl0V1w0vvov0PvC0fUM9dPD98Stdhh9EASG/YGFc6ixK9dhsiT2FwaXEbG0LMF18SMxvD5XdB I5RNA/0fgwlP2ZiWOj/k7cw== X-Google-Smtp-Source: AGHT+IE/wZXTpXwDl+Su1tSGiLVncuSuLdWOUOGA11KTtFzjP3WVcRBqQXBLgSVDxBHYoQCHOkJf5vIDaeKDk1aLpQ== X-Received: from pgdr2.prod.google.com ([2002:a63:9b02:0:b0:b16:a617:f449]) (user=ackerleytng job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:9144:b0:1f5:93b1:6a58 with SMTP id adf61e73a8af0-215ff094408mr8084312637.8.1747266229924; Wed, 14 May 2025 16:43:49 -0700 (PDT) Date: Wed, 14 May 2025 16:42:13 -0700 In-Reply-To: Mime-Version: 1.0 References: X-Mailer: git-send-email 2.49.0.1045.g170613ef41-goog Message-ID: <45c797aa925e0d2830978105cdf12d6c39f0bd1f.1747264138.git.ackerleytng@google.com> Subject: [RFC PATCH v2 34/51] mm: hugetlb: Add functions to add/delete folio from hugetlb lists From: Ackerley Tng To: kvm@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, x86@kernel.org, linux-fsdevel@vger.kernel.org Cc: ackerleytng@google.com, aik@amd.com, ajones@ventanamicro.com, akpm@linux-foundation.org, amoorthy@google.com, anthony.yznaga@oracle.com, anup@brainfault.org, aou@eecs.berkeley.edu, bfoster@redhat.com, binbin.wu@linux.intel.com, brauner@kernel.org, catalin.marinas@arm.com, chao.p.peng@intel.com, chenhuacai@kernel.org, dave.hansen@intel.com, david@redhat.com, dmatlack@google.com, dwmw@amazon.co.uk, erdemaktas@google.com, fan.du@intel.com, fvdl@google.com, graf@amazon.com, haibo1.xu@intel.com, hch@infradead.org, hughd@google.com, ira.weiny@intel.com, isaku.yamahata@intel.com, jack@suse.cz, james.morse@arm.com, jarkko@kernel.org, jgg@ziepe.ca, jgowans@amazon.com, jhubbard@nvidia.com, jroedel@suse.de, jthoughton@google.com, jun.miao@intel.com, kai.huang@intel.com, keirf@google.com, kent.overstreet@linux.dev, kirill.shutemov@intel.com, liam.merwick@oracle.com, maciej.wieczor-retman@intel.com, mail@maciej.szmigiero.name, maz@kernel.org, mic@digikod.net, michael.roth@amd.com, mpe@ellerman.id.au, muchun.song@linux.dev, nikunj@amd.com, nsaenz@amazon.es, oliver.upton@linux.dev, palmer@dabbelt.com, pankaj.gupta@amd.com, paul.walmsley@sifive.com, pbonzini@redhat.com, pdurrant@amazon.co.uk, peterx@redhat.com, pgonda@google.com, pvorel@suse.cz, qperret@google.com, quic_cvanscha@quicinc.com, quic_eberman@quicinc.com, quic_mnalajal@quicinc.com, quic_pderrin@quicinc.com, quic_pheragu@quicinc.com, quic_svaddagi@quicinc.com, quic_tsoni@quicinc.com, richard.weiyang@gmail.com, rick.p.edgecombe@intel.com, rientjes@google.com, roypat@amazon.co.uk, rppt@kernel.org, seanjc@google.com, shuah@kernel.org, steven.price@arm.com, steven.sistare@oracle.com, suzuki.poulose@arm.com, tabba@google.com, thomas.lendacky@amd.com, usama.arif@bytedance.com, vannapurve@google.com, vbabka@suse.cz, viro@zeniv.linux.org.uk, vkuznets@redhat.com, wei.w.wang@intel.com, will@kernel.org, willy@infradead.org, xiaoyao.li@intel.com, yan.y.zhao@intel.com, yilun.xu@intel.com, yuzenghui@huawei.com, zhiquan1.li@intel.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 347B9180003 X-Rspam-User: X-Stat-Signature: nhy4w94a7k6x1qk3yzbq9hasex3awn7x X-HE-Tag: 1747266231-565561 X-HE-Meta: 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 unLu25dj 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 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: These functions are introduced in hugetlb.c so the private hugetlb_lock can be accessed. These functions will be used in splitting and merging pages in a later patch. Signed-off-by: Ackerley Tng Co-developed-by: Vishal Annapurve Signed-off-by: Vishal Annapurve Change-Id: I42f8feda40cbd28e5fd02e54fa58145d847a220e --- include/linux/hugetlb.h | 2 ++ mm/hugetlb.c | 22 ++++++++++++++++++++++ 2 files changed, 24 insertions(+) diff --git a/include/linux/hugetlb.h b/include/linux/hugetlb.h index e6b90e72d46d..e432ccfe3e63 100644 --- a/include/linux/hugetlb.h +++ b/include/linux/hugetlb.h @@ -156,6 +156,8 @@ bool hugetlb_reserve_pages(struct inode *inode, long from, long to, vm_flags_t vm_flags); long hugetlb_unreserve_pages(struct inode *inode, long start, long end, long freed); +void hugetlb_folio_list_add(struct folio *folio, struct list_head *list); +void hugetlb_folio_list_del(struct folio *folio); bool folio_isolate_hugetlb(struct folio *folio, struct list_head *list); int get_hwpoison_hugetlb_folio(struct folio *folio, bool *hugetlb, bool unpoison); int get_huge_page_for_hwpoison(unsigned long pfn, int flags, diff --git a/mm/hugetlb.c b/mm/hugetlb.c index 816f257680be..6e326c09c505 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -7473,6 +7473,28 @@ long hugetlb_unreserve_pages(struct inode *inode, long start, long end, return 0; } +void hugetlb_folio_list_add(struct folio *folio, struct list_head *list) +{ + /* + * hstate's hugepage_activelist is guarded by hugetlb_lock, hence hold + * hugetlb_lock while modifying folio-> lru. + */ + spin_lock_irq(&hugetlb_lock); + list_add(&folio->lru, list); + spin_unlock_irq(&hugetlb_lock); +} + +void hugetlb_folio_list_del(struct folio *folio) +{ + /* + * hstate's hugepage_activelist is guarded by hugetlb_lock, hence hold + * hugetlb_lock while modifying folio-> lru. + */ + spin_lock_irq(&hugetlb_lock); + list_del(&folio->lru); + spin_unlock_irq(&hugetlb_lock); +} + #ifdef CONFIG_HUGETLB_PMD_PAGE_TABLE_SHARING static unsigned long page_table_shareable(struct vm_area_struct *svma, struct vm_area_struct *vma, -- 2.49.0.1045.g170613ef41-goog