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 B643023C700 for ; Tue, 14 Jan 2025 06:43:22 +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=1736837002; cv=none; b=qzY78DMrPwnlk+h23fXgW7rnSrqbm5RKQUUmSGzE7+GSA/Zlslr7RGjehRt9ddvgAx5OV6tmV/f+qJUbaCcD/nPUuAScqGfipQSZJzshSsMNrSLhmidpHtYO70DN2TetcEGs4LQD5zi8J7IAep9aRSspr83QtaNjIxwYguSnQ50= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1736837002; c=relaxed/simple; bh=EI/AN5K9D6pVJLlpj85pYepjV3v9hxleu/pHom96u6M=; h=Date:To:From:Subject:Message-Id; b=LRPTC+dC5OsFXOhyCVoxi+8/uC1Kvq/RrML8zSO9fTko61V6ZgAFlETvbqedMLXlZ9vaz7UFkPcUeaUsylDudSQSuzq6NA7TmSo7PZoKtAode6rxvfhjzRrLs1lC4MPRgVpc+0asmpsR1r5uT+fpDbc06Ihs9jgQeujgTg2WD68= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b=hMrrcmYW; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linux-foundation.org header.i=@linux-foundation.org header.b="hMrrcmYW" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 4EB3CC4CEDD; Tue, 14 Jan 2025 06:43:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linux-foundation.org; s=korg; t=1736837002; bh=EI/AN5K9D6pVJLlpj85pYepjV3v9hxleu/pHom96u6M=; h=Date:To:From:Subject:From; b=hMrrcmYW20obFN2EQZpyYdxnQL+lqN4y4rRpSU75nRUztHUuquzd+VBg+NGU1tJxA EyjKb7+BPL1oOYJGySjCdZEYyhyfg25CnjtwYziNdZHcCq27tQC+d40/a05qSu2YqB ijaWhJ4xz7ueldTZCtxrvo43WhZIYU2oWQUgLRj8= Date: Mon, 13 Jan 2025 22:43:21 -0800 To: mm-commits@vger.kernel.org,zokeefe@google.com,willy@infradead.org,will@kernel.org,rientjes@google.com,peterz@infradead.org,peterx@redhat.com,muchun.song@linux.dev,mgorman@suse.de,luto@kernel.org,lorenzo.stoakes@oracle.com,jannh@google.com,hughd@google.com,david@redhat.com,dave.hansen@linux.intel.com,dan.carpenter@linaro.org,catalin.marinas@arm.com,zhengqi.arch@bytedance.com,akpm@linux-foundation.org From: Andrew Morton Subject: [merged mm-stable] mm-skip-over-all-consecutive-none-ptes-in-do_zap_pte_range.patch removed from -mm tree Message-Id: <20250114064322.4EB3CC4CEDD@smtp.kernel.org> Precedence: bulk X-Mailing-List: mm-commits@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: The quilt patch titled Subject: mm: skip over all consecutive none ptes in do_zap_pte_range() has been removed from the -mm tree. Its filename was mm-skip-over-all-consecutive-none-ptes-in-do_zap_pte_range.patch This patch was dropped because it was merged into the mm-stable branch of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm ------------------------------------------------------ From: Qi Zheng Subject: mm: skip over all consecutive none ptes in do_zap_pte_range() Date: Wed, 4 Dec 2024 19:09:45 +0800 Skip over all consecutive none ptes in do_zap_pte_range(), which helps optimize away need_resched() + force_break + incremental pte/addr increments etc. Link: https://lkml.kernel.org/r/8ecffbf990afd1c8ccc195a2ec321d55f0923908.1733305182.git.zhengqi.arch@bytedance.com Signed-off-by: Qi Zheng Suggested-by: David Hildenbrand Cc: Andy Lutomirski Cc: Catalin Marinas Cc: Dave Hansen Cc: David Rientjes Cc: Hugh Dickins Cc: Jann Horn Cc: Lorenzo Stoakes Cc: Matthew Wilcox Cc: Mel Gorman Cc: Muchun Song Cc: Peter Xu Cc: Peter Zijlstra Cc: Will Deacon Cc: Zach O'Keefe Cc: Dan Carpenter Signed-off-by: Andrew Morton --- mm/memory.c | 27 ++++++++++++++++++++------- 1 file changed, 20 insertions(+), 7 deletions(-) --- a/mm/memory.c~mm-skip-over-all-consecutive-none-ptes-in-do_zap_pte_range +++ a/mm/memory.c @@ -1665,17 +1665,30 @@ static inline int do_zap_pte_range(struc { pte_t ptent = ptep_get(pte); int max_nr = (end - addr) / PAGE_SIZE; + int nr = 0; - if (pte_none(ptent)) - return 1; + /* Skip all consecutive none ptes */ + if (pte_none(ptent)) { + for (nr = 1; nr < max_nr; nr++) { + ptent = ptep_get(pte + nr); + if (!pte_none(ptent)) + break; + } + max_nr -= nr; + if (!max_nr) + return nr; + pte += nr; + addr += nr * PAGE_SIZE; + } if (pte_present(ptent)) - return zap_present_ptes(tlb, vma, pte, ptent, max_nr, - addr, details, rss, force_flush, - force_break); + nr += zap_present_ptes(tlb, vma, pte, ptent, max_nr, addr, + details, rss, force_flush, force_break); + else + nr += zap_nonpresent_ptes(tlb, vma, pte, ptent, max_nr, addr, + details, rss); - return zap_nonpresent_ptes(tlb, vma, pte, ptent, max_nr, addr, - details, rss); + return nr; } static unsigned long zap_pte_range(struct mmu_gather *tlb, _ Patches currently in -mm which might be from zhengqi.arch@bytedance.com are