From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id B2C058D001D for ; Wed, 3 Nov 2010 11:30:45 -0400 (EDT) Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Subject: [PATCH 49 of 66] mprotect: pass vma down to page table walkers Message-Id: In-Reply-To: References: Date: Wed, 03 Nov 2010 16:28:24 +0100 From: Andrea Arcangeli Sender: owner-linux-mm@kvack.org To: linux-mm@kvack.org, Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org Cc: Marcelo Tosatti , Adam Litke , Avi Kivity , Hugh Dickins , Rik van Riel , Mel Gorman , Dave Hansen , Benjamin Herrenschmidt , Ingo Molnar , Mike Travis , KAMEZAWA Hiroyuki , Christoph Lameter , Chris Wright , bpicco@redhat.com, KOSAKI Motohiro , Balbir Singh , "Michael S. Tsirkin" , Peter Zijlstra , Johannes Weiner , Daisuke Nishimura , Chris Mason , Borislav Petkov List-ID: From: Johannes Weiner Flushing the tlb for huge pmds requires the vma's anon_vma, so pass along the vma instead of the mm, we can always get the latter when we need it. Signed-off-by: Johannes Weiner Signed-off-by: Andrea Arcangeli Reviewed-by: Rik van Riel --- diff --git a/mm/mprotect.c b/mm/mprotect.c --- a/mm/mprotect.c +++ b/mm/mprotect.c @@ -78,7 +78,7 @@ static void change_pte_range(struct mm_s pte_unmap_unlock(pte - 1, ptl); } -static inline void change_pmd_range(struct mm_struct *mm, pud_t *pud, +static inline void change_pmd_range(struct vm_area_struct *vma, pud_t *pud, unsigned long addr, unsigned long end, pgprot_t newprot, int dirty_accountable) { @@ -88,14 +88,15 @@ static inline void change_pmd_range(stru pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); - split_huge_page_pmd(mm, pmd); + split_huge_page_pmd(vma->vm_mm, pmd); if (pmd_none_or_clear_bad(pmd)) continue; - change_pte_range(mm, pmd, addr, next, newprot, dirty_accountable); + change_pte_range(vma->vm_mm, pmd, addr, next, newprot, + dirty_accountable); } while (pmd++, addr = next, addr != end); } -static inline void change_pud_range(struct mm_struct *mm, pgd_t *pgd, +static inline void change_pud_range(struct vm_area_struct *vma, pgd_t *pgd, unsigned long addr, unsigned long end, pgprot_t newprot, int dirty_accountable) { @@ -107,7 +108,8 @@ static inline void change_pud_range(stru next = pud_addr_end(addr, end); if (pud_none_or_clear_bad(pud)) continue; - change_pmd_range(mm, pud, addr, next, newprot, dirty_accountable); + change_pmd_range(vma, pud, addr, next, newprot, + dirty_accountable); } while (pud++, addr = next, addr != end); } @@ -127,7 +129,8 @@ static void change_protection(struct vm_ next = pgd_addr_end(addr, end); if (pgd_none_or_clear_bad(pgd)) continue; - change_pud_range(mm, pgd, addr, next, newprot, dirty_accountable); + change_pud_range(vma, pgd, addr, next, newprot, + dirty_accountable); } while (pgd++, addr = next, addr != end); flush_tlb_range(vma, start, end); } -- 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/ . Fight unfair telecom policy in Canada: sign http://dissolvethecrtc.ca/ Don't email: email@kvack.org