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Mon, 07 Aug 2023 16:05:28 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id d190-20020a25cdc7000000b00d3596aca5bcsm2545203ybf.34.2023.08.07.16.05.26 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Aug 2023 16:05:28 -0700 (PDT) From: "Vishal Moola (Oracle)" To: Andrew Morton , Matthew Wilcox Cc: linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-mips@vger.kernel.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, sparclinux@vger.kernel.org, linux-um@lists.infradead.org, xen-devel@lists.xenproject.org, kvm@vger.kernel.org, Hugh Dickins , "Vishal Moola (Oracle)" , Mike Rapoport Subject: [PATCH mm-unstable v9 05/31] mm: Convert ptlock_alloc() to use ptdescs Date: Mon, 7 Aug 2023 16:04:47 -0700 Message-Id: <20230807230513.102486-6-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230807230513.102486-1-vishal.moola@gmail.com> References: <20230807230513.102486-1-vishal.moola@gmail.com> MIME-Version: 1.0 X-Stat-Signature: nzxwpe9rm3t8w8agng16zsuceoadfafg X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 5C3C14000D X-Rspam-User: X-HE-Tag: 1691449529-638473 X-HE-Meta: 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 O/ivjzpI 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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: This removes some direct accesses to struct page, working towards splitting out struct ptdesc from struct page. Acked-by: Mike Rapoport (IBM) Signed-off-by: Vishal Moola (Oracle) --- include/linux/mm.h | 6 +++--- mm/memory.c | 4 ++-- 2 files changed, 5 insertions(+), 5 deletions(-) diff --git a/include/linux/mm.h b/include/linux/mm.h index f6d14a5fe747..6aea8fb671f1 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2860,7 +2860,7 @@ static inline void pagetable_free(struct ptdesc *pt) #if USE_SPLIT_PTE_PTLOCKS #if ALLOC_SPLIT_PTLOCKS void __init ptlock_cache_init(void); -extern bool ptlock_alloc(struct page *page); +bool ptlock_alloc(struct ptdesc *ptdesc); extern void ptlock_free(struct page *page); static inline spinlock_t *ptlock_ptr(struct page *page) @@ -2872,7 +2872,7 @@ static inline void ptlock_cache_init(void) { } -static inline bool ptlock_alloc(struct page *page) +static inline bool ptlock_alloc(struct ptdesc *ptdesc) { return true; } @@ -2902,7 +2902,7 @@ static inline bool ptlock_init(struct page *page) * slab code uses page->slab_cache, which share storage with page->ptl. */ VM_BUG_ON_PAGE(*(unsigned long *)&page->ptl, page); - if (!ptlock_alloc(page)) + if (!ptlock_alloc(page_ptdesc(page))) return false; spin_lock_init(ptlock_ptr(page)); return true; diff --git a/mm/memory.c b/mm/memory.c index 956aad8aff34..3606ef72ba70 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -6134,14 +6134,14 @@ void __init ptlock_cache_init(void) SLAB_PANIC, NULL); } -bool ptlock_alloc(struct page *page) +bool ptlock_alloc(struct ptdesc *ptdesc) { spinlock_t *ptl; ptl = kmem_cache_alloc(page_ptl_cachep, GFP_KERNEL); if (!ptl) return false; - page->ptl = ptl; + ptdesc->ptl = ptl; return true; }