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Mon, 12 Jun 2023 14:05:00 -0700 (PDT) Received: from unknowna0e70b2ca394.attlocal.net ([2600:1700:2f7d:1800::16]) by smtp.googlemail.com with ESMTPSA id s125-20020a817783000000b00569eb609458sm2757115ywc.81.2023.06.12.14.04.58 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 12 Jun 2023 14:04:59 -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)" Subject: [PATCH v4 07/34] mm: Convert ptlock_alloc() to use ptdescs Date: Mon, 12 Jun 2023 14:03:56 -0700 Message-Id: <20230612210423.18611-8-vishal.moola@gmail.com> X-Mailer: git-send-email 2.40.1 In-Reply-To: <20230612210423.18611-1-vishal.moola@gmail.com> References: <20230612210423.18611-1-vishal.moola@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Rspamd-Queue-Id: 32DBD4001B X-Rspam-User: X-Stat-Signature: 1mgogpn1836rajfx39ysc6imcobkutzj X-Rspamd-Server: rspam03 X-HE-Tag: 1686603900-853922 X-HE-Meta: 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 MAO6s7iU oodYh2mzSB7OXKUWTAxATo0VeAKe6Fng9D/AoDqhoSiQ4OYGxzq2kwksoVVN2nmbAV/8aczmaUTIetug/Ez8P8TpbY3fLvu1h6/rmWQt2bQAk+cm8Wpnx4Wy1DUdxvDkgtIn4TgxsN96ypJoBON7NCS3ZIN5a9s4I2FGvQH+5U/9MDFSL+nbAwFpn5Ly1bwYCu7bxU/P4xiOZQu/C4DLVpgMdiYAm0JHdv108oQclJZOdPaDM5tm9hijjZ9hOmtEt6GICtJVGIZt1KCM7T1QvMH8dvDzKqnrlulUVbm2rKX6nsdZv8szaNKzGqW0PwZU+z/gh2hHkl4UQk+JG+RyaLhdqvoGPtSGzwUnH8Lc910uH7GUt/FcKpg4WAsIzQFv1CpsWPXtlj3kTGK0HHPUWDHfAhnG+fI5ICpXwjxpevakWJ1rdKIkjvf29G/pQbMXv9dWAsFwflckneHvPDNCSrz1itZ7TmlGnTklus+gRsZy6ho0HZb8QqeqtpDHXe/Ps+2DDsJZx7jRBX9yn/zGQ0JpICfXNO+q3W5Jqo0J8rr1Z3c24waf1g7Iyl0uS13M/bbV2XSngjHZTGhc= 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. 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 088b7664f897..e6f1be2a405e 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -2825,7 +2825,7 @@ static inline void pagetable_clear(void *x) #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) @@ -2837,7 +2837,7 @@ 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; } @@ -2867,7 +2867,7 @@ 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 80ce9dda2779..ba9579117686 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -5934,14 +5934,14 @@ 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; } -- 2.40.1