Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933413AbbFJGd7 (ORCPT ); Wed, 10 Jun 2015 02:33:59 -0400 Received: from mail-pd0-f196.google.com ([209.85.192.196]:32875 "EHLO mail-pd0-f196.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933130AbbFJGcx (ORCPT ); Wed, 10 Jun 2015 02:32:53 -0400 From: Wenwei Tao To: izik.eidus@ravellosystems.com, aarcange@redhat.com, chrisw@sous-sol.org, hughd@google.com, tglx@linutronix.de, mingo@redhat.com, hpa@zytor.com, x86@kernel.org, viro@zeniv.linux.org.uk Cc: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, kvm-ppc@vger.kernel.org, wenweitaowenwei@gmail.com Subject: [RFC PATCH 5/6] x86/mm: change the condition of identifying hugetlb vm Date: Wed, 10 Jun 2015 14:27:18 +0800 Message-Id: <1433917639-31699-6-git-send-email-wenweitaowenwei@gmail.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1433917639-31699-1-git-send-email-wenweitaowenwei@gmail.com> References: <1433917639-31699-1-git-send-email-wenweitaowenwei@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1200 Lines: 32 Hugetlb VMAs are not mergeable, that means a VMA couldn't have VM_HUGETLB and VM_MERGEABLE been set in the same time. So we use VM_HUGETLB to indicate new mergeable VMAs. Because of that a VMA which has VM_HUGETLB been set is a hugetlb VMA only if it doesn't have VM_MERGEABLE been set in the same time. Signed-off-by: Wenwei Tao --- arch/x86/mm/tlb.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) diff --git a/arch/x86/mm/tlb.c b/arch/x86/mm/tlb.c index 3250f23..0247916 100644 --- a/arch/x86/mm/tlb.c +++ b/arch/x86/mm/tlb.c @@ -195,7 +195,8 @@ void flush_tlb_mm_range(struct mm_struct *mm, unsigned long start, goto out; } - if ((end != TLB_FLUSH_ALL) && !(vmflag & VM_HUGETLB)) + if ((end != TLB_FLUSH_ALL) && + !((vmflag & (VM_HUGETLB | VM_MERGEABLE)) == VM_HUGETLB)) base_pages_to_flush = (end - start) >> PAGE_SHIFT; if (base_pages_to_flush > tlb_single_page_flush_ceiling) { -- 1.7.9.5 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/