From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 534F018EFF1; Tue, 30 Jul 2024 06:42:59 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722321780; cv=none; b=dZKtXmRFfWFNJce0UTjsjzp3j8CWWbgAUor/ogTNd7zMHzNtiSzM36ya1GEVX/bucykMiaR/37pRmd5DDzq95LpVrjwHu3o4sZepauMoT5DX/UJFbUaHgzxKqXZyCawY3fmt7o7mpeEuNMTYR1Ei9vJDx2SmMpbXQL+HcB8Qx04= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722321780; c=relaxed/simple; bh=gTArplwlUTbTCuHNeuVct9T0SiQYRSRnIpLhqPQ+rcE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=NYy5u8Kf8IsqTdwF/Lj+yHSg4oBclNFDOdX0bepNBVozhTPt4V4T0HP41/n8aBmAQ510vjtjVP6K7iI5mfS4vG2IitdqafAbtCs6sVqb7JOgMUh8bURaMBXr6OVNHNna2qPVvLSH5ziRmzO4ptW/rjNPbEZ2ghbh+zIwcKO3Fbw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=EMNS+x8H; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="EMNS+x8H" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CD7E2C4AF10; Tue, 30 Jul 2024 06:42:46 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722321779; bh=gTArplwlUTbTCuHNeuVct9T0SiQYRSRnIpLhqPQ+rcE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=EMNS+x8HI+8Q08E7NcZ4WD5BkiWh9xAxJgNUSeEC7wUsbadoC1FFu91tQMZE7Hy2S IUmoRLjOcThG09j1Sqjri8IS5v5L/GqTmjdQarB0bmky4bNiqAj/NZnJ7JFHJeD8eM xp4GUDXu8Pgl+WLlnMHA4AQrs4fRuuLAioV9xJyUj3Qfg+O5uVNHyjdnKujlXeeMze y4pE/ENss3Y27SBqOaPJvTM3lQjwDoA5fmkCORb6Q7jSG49BTJJjCdSyOBxPURAgT7 N7ujc9Lmfynti/YNZ3I4QClP7CXUI+TSJh/h+u7SmrhYbHOtbMTzdHI4QxlG3cF9IU WbYLxc+yhe31Q== From: alexs@kernel.org To: Will Deacon , "Aneesh Kumar K . V" , Nick Piggin , Peter Zijlstra , Russell King , Catalin Marinas , Brian Cain , WANG Xuerui , Geert Uytterhoeven , Jonas Bonn , Stefan Kristiansson , Stafford Horne , Michael Ellerman , Naveen N Rao , Paul Walmsley , Albert Ou , Thomas Gleixner , Borislav Petkov , Dave Hansen , x86@kernel.org, "H . Peter Anvin" , Andy Lutomirski , Bibo Mao , Baolin Wang , linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-csky@vger.kernel.org, linux-hexagon@vger.kernel.org, loongarch@lists.linux.dev, linux-m68k@lists.linux-m68k.org, linux-openrisc@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, Heiko Carstens , Vasily Gorbik , Christian Borntraeger , Sven Schnelle , Qi Zheng , Vishal Moola , "Aneesh Kumar K . V" , Kemeng Shi , Lance Yang , Peter Xu , Barry Song , linux-s390@vger.kernel.org Cc: Guo Ren , Christophe Leroy , Palmer Dabbelt , Mike Rapoport , Oscar Salvador , Alexandre Ghiti , Jisheng Zhang , Samuel Holland , Anup Patel , Josh Poimboeuf , Breno Leitao , Alexander Gordeev , Gerald Schaefer , Hugh Dickins , David Hildenbrand , Ryan Roberts , Matthew Wilcox , Alex Shi , Andrew Morton Subject: [RFC PATCH 01/18] mm/pgtable: use ptdesc in pte_free_now/pte_free_defer Date: Tue, 30 Jul 2024 14:46:55 +0800 Message-ID: <20240730064712.3714387-2-alexs@kernel.org> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20240730064712.3714387-1-alexs@kernel.org> References: <20240730064712.3714387-1-alexs@kernel.org> Precedence: bulk X-Mailing-List: linux-openrisc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Alex Shi page table descriptor is splited from struct page, use it to replace struct page in right place. Signed-off-by: Alex Shi Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Cc: Andrew Morton Cc: Matthew Wilcox Cc: David Hildenbrand --- mm/pgtable-generic.c | 13 ++++++------- 1 file changed, 6 insertions(+), 7 deletions(-) diff --git a/mm/pgtable-generic.c b/mm/pgtable-generic.c index 13a7705df3f8..2ce714f1dd15 100644 --- a/mm/pgtable-generic.c +++ b/mm/pgtable-generic.c @@ -238,18 +238,17 @@ pmd_t pmdp_collapse_flush(struct vm_area_struct *vma, unsigned long address, #ifndef pte_free_defer static void pte_free_now(struct rcu_head *head) { - struct page *page; + struct ptdesc *ptdesc; - page = container_of(head, struct page, rcu_head); - pte_free(NULL /* mm not passed and not used */, (pgtable_t)page); + ptdesc = container_of(head, struct ptdesc, pt_rcu_head); + pte_free(NULL /* mm not passed and not used */, (pgtable_t)ptdesc); } void pte_free_defer(struct mm_struct *mm, pgtable_t pgtable) { - struct page *page; + struct ptdesc *ptdesc = page_ptdesc(pgtable); - page = pgtable; - call_rcu(&page->rcu_head, pte_free_now); + call_rcu(&ptdesc->pt_rcu_head, pte_free_now); } #endif /* pte_free_defer */ #endif /* CONFIG_TRANSPARENT_HUGEPAGE */ @@ -330,7 +329,7 @@ pte_t *pte_offset_map_nolock(struct mm_struct *mm, pmd_t *pmd, * kmapped if necessary (when CONFIG_HIGHPTE), and locked against concurrent * modification by software, with a pointer to that spinlock in ptlp (in some * configs mm->page_table_lock, in SPLIT_PTLOCK configs a spinlock in table's - * struct page). pte_unmap_unlock(pte, ptl) to unlock and unmap afterwards. + * struct ptdesc). pte_unmap_unlock(pte, ptl) to unlock and unmap afterwards. * * But it is unsuccessful, returning NULL with *ptlp unchanged, if there is no * page table at *pmd: if, for example, the page table has just been removed, -- 2.43.0