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 3ECD818F2FF; Tue, 30 Jul 2024 06:44:22 +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=1722321862; cv=none; b=T78rMS8oxAiArTibFjJYAtlBIaQFlN6LYJEsWZbrjxNdF8Shi6AaOufCGKwZfLCBXZB7Gb6KzN9duA2C+H3yfiZp0jO1IcP+MC4pJvM0FoyRQhTaoXKi/FYrx5s7zxsjNd+a4Vt2L6zmCT2OEldUNendmfBv7ZQOMZxYNKdT0ig= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722321862; c=relaxed/simple; bh=G//eVJ9Nw8aOOKl2d7JUp/+QzzL5npEnufgRCiBDKNQ=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=Mdnpl+vDhTBNDDtWYpxG7fthOrQSp9bhRqTAYYlSclpZAFYWceVH/2a/W5I8W/SUlKGuQBeDeHvJN2gtuWdwwkTHxaQS1Nak/F3XK1N+h9gtnvX48x0bNFcf6SEfXdwJz6cNQDqMXCjiT7dcGIOyLDFs4G3emyqlD6vwq3qvSeI= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=J/Njo24p; 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="J/Njo24p" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 20371C4AF09; Tue, 30 Jul 2024 06:44:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1722321862; bh=G//eVJ9Nw8aOOKl2d7JUp/+QzzL5npEnufgRCiBDKNQ=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=J/Njo24pZ085kd/eT/gy5nmywtW77TTpW3xwRWYKhIkRHK+lzJdbLggDAN6TpyGvN rW07M9G7E1rNbOiK/BYavaoAKy5hQTRctqPFFo3zD8RaDkoOT734VNnkfzYGuRTgPr 7lKhNURsW3JqfLiFVe6G4I5vB1kH5jyn1aLmIMd7FJoJlqMApaFJRvyhUsEwo7ZIpN 7RM5QFW8/cV4jRPKXNJ+uwP9fbxQTUYzoz9IEwP+GKQXDzHKvni3jbtRsnh4VwsG8Q iDZw7zJUhoXwEXAb/FQFLoYiOb7hjhzSksX+Dz2XjNV5rBm5sV5pprZ9SrmxaTGPRh KrVL8p90HnjKQ== 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 07/18] mm/thp: use ptdesc in copy_huge_pmd Date: Tue, 30 Jul 2024 14:47:01 +0800 Message-ID: <20240730064712.3714387-8-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 Since we have ptdesc struct now, better to use replace pgtable_t, aka 'struct page *'. It's alaos a preparation for return ptdesc pointer in pte_alloc_one series function. Signed-off-by: Alex Shi Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Cc: Andrew Morton --- mm/huge_memory.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-) diff --git a/mm/huge_memory.c b/mm/huge_memory.c index a331d4504d52..236e1582d97e 100644 --- a/mm/huge_memory.c +++ b/mm/huge_memory.c @@ -1369,15 +1369,15 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, struct page *src_page; struct folio *src_folio; pmd_t pmd; - pgtable_t pgtable = NULL; + struct ptdesc *ptdesc = NULL; int ret = -ENOMEM; /* Skip if can be re-fill on fault */ if (!vma_is_anonymous(dst_vma)) return 0; - pgtable = pte_alloc_one(dst_mm); - if (unlikely(!pgtable)) + ptdesc = page_ptdesc(pte_alloc_one(dst_mm)); + if (unlikely(!ptdesc)) goto out; dst_ptl = pmd_lock(dst_mm, dst_pmd); @@ -1404,7 +1404,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, } add_mm_counter(dst_mm, MM_ANONPAGES, HPAGE_PMD_NR); mm_inc_nr_ptes(dst_mm); - pgtable_trans_huge_deposit(dst_mm, dst_pmd, pgtable); + pgtable_trans_huge_deposit(dst_mm, dst_pmd, ptdesc_page(ptdesc)); if (!userfaultfd_wp(dst_vma)) pmd = pmd_swp_clear_uffd_wp(pmd); set_pmd_at(dst_mm, addr, dst_pmd, pmd); @@ -1414,7 +1414,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, #endif if (unlikely(!pmd_trans_huge(pmd))) { - pte_free(dst_mm, pgtable); + pte_free(dst_mm, ptdesc_page(ptdesc)); goto out_unlock; } /* @@ -1440,7 +1440,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, if (unlikely(folio_try_dup_anon_rmap_pmd(src_folio, src_page, src_vma))) { /* Page maybe pinned: split and retry the fault on PTEs. */ folio_put(src_folio); - pte_free(dst_mm, pgtable); + pte_free(dst_mm, ptdesc_page(ptdesc)); spin_unlock(src_ptl); spin_unlock(dst_ptl); __split_huge_pmd(src_vma, src_pmd, addr, false, NULL); @@ -1449,7 +1449,7 @@ int copy_huge_pmd(struct mm_struct *dst_mm, struct mm_struct *src_mm, add_mm_counter(dst_mm, MM_ANONPAGES, HPAGE_PMD_NR); out_zero_page: mm_inc_nr_ptes(dst_mm); - pgtable_trans_huge_deposit(dst_mm, dst_pmd, pgtable); + pgtable_trans_huge_deposit(dst_mm, dst_pmd, ptdesc_page(ptdesc)); pmdp_set_wrprotect(src_mm, addr, src_pmd); if (!userfaultfd_wp(dst_vma)) pmd = pmd_clear_uffd_wp(pmd); -- 2.43.0