From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932688AbcGOKhz (ORCPT ); Fri, 15 Jul 2016 06:37:55 -0400 Received: from mail-wm0-f67.google.com ([74.125.82.67]:32873 "EHLO mail-wm0-f67.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932665AbcGOKhu (ORCPT ); Fri, 15 Jul 2016 06:37:50 -0400 From: Topi Miettinen To: linux-kernel@vger.kernel.org Cc: Topi Miettinen , Andrew Morton , Oleg Nesterov , "Kirill A. Shutemov" , Chen Gang , Michal Hocko , Konstantin Khlebnikov , Andrea Arcangeli , Andrey Ryabinin , David Rientjes , Vlastimil Babka , Hugh Dickins , Alexander Kuleshov , linux-mm@kvack.org (open list:MEMORY MANAGEMENT) Subject: [PATCH 10/14] resource limits: track highwater mark of address space size Date: Fri, 15 Jul 2016 13:35:57 +0300 Message-Id: <1468578983-28229-11-git-send-email-toiwoton@gmail.com> X-Mailer: git-send-email 2.8.1 In-Reply-To: <1468578983-28229-1-git-send-email-toiwoton@gmail.com> References: <1468578983-28229-1-git-send-email-toiwoton@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Track maximum size of address space, to be able to configure RLIMIT_AS resource limits. The information is available with taskstats and cgroupstats netlink socket. Signed-off-by: Topi Miettinen --- mm/mmap.c | 4 ++++ mm/mremap.c | 3 +++ 2 files changed, 7 insertions(+) diff --git a/mm/mmap.c b/mm/mmap.c index c37f599..ded2f8d 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2707,6 +2707,9 @@ static int do_brk(unsigned long addr, unsigned long len) out: perf_event_mmap(vma); mm->total_vm += len >> PAGE_SHIFT; + + update_resource_highwatermark(RLIMIT_AS, mm->total_vm << PAGE_SHIFT); + mm->data_vm += len >> PAGE_SHIFT; if (flags & VM_LOCKED) mm->locked_vm += (len >> PAGE_SHIFT); @@ -2927,6 +2930,7 @@ bool may_expand_vm(struct mm_struct *mm, vm_flags_t flags, unsigned long npages) void vm_stat_account(struct mm_struct *mm, vm_flags_t flags, long npages) { mm->total_vm += npages; + update_resource_highwatermark(RLIMIT_AS, mm->total_vm << PAGE_SHIFT); if (is_exec_mapping(flags)) mm->exec_vm += npages; diff --git a/mm/mremap.c b/mm/mremap.c index f1821335..aa717d0 100644 --- a/mm/mremap.c +++ b/mm/mremap.c @@ -398,6 +398,9 @@ static struct vm_area_struct *vma_to_resize(unsigned long addr, update_resource_highwatermark(RLIMIT_MEMLOCK, (mm->locked_vm << PAGE_SHIFT) + new_len - old_len); + update_resource_highwatermark(RLIMIT_AS, (mm->total_vm << PAGE_SHIFT) + + new_len - old_len); + return vma; } -- 2.8.1