From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f174.google.com (mail-pd0-f174.google.com [209.85.192.174]) by kanga.kvack.org (Postfix) with ESMTP id 9AF7E6B0038 for ; Mon, 14 Oct 2013 13:37:33 -0400 (EDT) Received: by mail-pd0-f174.google.com with SMTP id y13so7684077pdi.33 for ; Mon, 14 Oct 2013 10:37:33 -0700 (PDT) From: Naoya Horiguchi Subject: [PATCH 02/11] pagewalk: add walk_page_vma() Date: Mon, 14 Oct 2013 13:37:01 -0400 Message-Id: <1381772230-26878-3-git-send-email-n-horiguchi@ah.jp.nec.com> In-Reply-To: <1381772230-26878-1-git-send-email-n-horiguchi@ah.jp.nec.com> References: <1381772230-26878-1-git-send-email-n-horiguchi@ah.jp.nec.com> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org Cc: Andrew Morton , Matt Mackall , Cliff Wickman , KOSAKI Motohiro , Johannes Weiner , KAMEZAWA Hiroyuki , Michal Hocko , "Aneesh Kumar K.V" , Pavel Emelyanov , linux-kernel@vger.kernel.org Introduces walk_page_vma(), which is useful for the callers which want to walk over a given vma. It's used by later patches. Signed-off-by: Naoya Horiguchi --- include/linux/mm.h | 1 + mm/pagewalk.c | 20 ++++++++++++++++++++ 2 files changed, 21 insertions(+) diff --git v3.12-rc4.orig/include/linux/mm.h v3.12-rc4/include/linux/mm.h index bd87065..6c138d7 100644 --- v3.12-rc4.orig/include/linux/mm.h +++ v3.12-rc4/include/linux/mm.h @@ -979,6 +979,7 @@ struct mm_walk { int walk_page_range(unsigned long addr, unsigned long end, struct mm_walk *walk); +int walk_page_vma(struct vm_area_struct *vma, struct mm_walk *walk); void free_pgd_range(struct mmu_gather *tlb, unsigned long addr, unsigned long end, unsigned long floor, unsigned long ceiling); int copy_page_range(struct mm_struct *dst, struct mm_struct *src, diff --git v3.12-rc4.orig/mm/pagewalk.c v3.12-rc4/mm/pagewalk.c index 9e95541..80b247b 100644 --- v3.12-rc4.orig/mm/pagewalk.c +++ v3.12-rc4/mm/pagewalk.c @@ -314,3 +314,23 @@ int walk_page_range(unsigned long start, unsigned long end, } while (start = next, start < end); return err; } + +int walk_page_vma(struct vm_area_struct *vma, struct mm_walk *walk) +{ + int err; + + if (!walk->mm) + return -EINVAL; + + VM_BUG_ON(!rwsem_is_locked(&walk->mm->mmap_sem)); + VM_BUG_ON(!vma); + walk->vma = vma; + err = walk_page_test(vma->vm_start, vma->vm_end, walk); + if (walk->skip) { + walk->skip = 0; + return 0; + } + if (err) + return err; + return __walk_page_range(vma->vm_start, vma->vm_end, walk); +} -- 1.8.3.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org