From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pg0-f71.google.com (mail-pg0-f71.google.com [74.125.83.71]) by kanga.kvack.org (Postfix) with ESMTP id 01EE16B026E for ; Tue, 24 Jan 2017 08:53:02 -0500 (EST) Received: by mail-pg0-f71.google.com with SMTP id z67so238489404pgb.0 for ; Tue, 24 Jan 2017 05:53:02 -0800 (PST) Received: from mx0a-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com. [148.163.158.5]) by mx.google.com with ESMTPS id t21si19258104pfa.173.2017.01.24.05.53.01 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 24 Jan 2017 05:53:02 -0800 (PST) Received: from pps.filterd (m0098419.ppops.net [127.0.0.1]) by mx0b-001b2d01.pphosted.com (8.16.0.20/8.16.0.20) with SMTP id v0ODhlJ5069229 for ; Tue, 24 Jan 2017 08:53:01 -0500 Received: from e06smtp11.uk.ibm.com (e06smtp11.uk.ibm.com [195.75.94.107]) by mx0b-001b2d01.pphosted.com with ESMTP id 2867gm237q-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Tue, 24 Jan 2017 08:53:00 -0500 Received: from localhost by e06smtp11.uk.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Tue, 24 Jan 2017 13:52:58 -0000 From: Mike Rapoport Subject: [RFC PATCH 1/5] mm: call vm_munmap in munmap syscall instead of using open coded version Date: Tue, 24 Jan 2017 15:51:59 +0200 In-Reply-To: <1485265923-20256-1-git-send-email-rppt@linux.vnet.ibm.com> References: <1485265923-20256-1-git-send-email-rppt@linux.vnet.ibm.com> Message-Id: <1485265923-20256-2-git-send-email-rppt@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Linux-MM Cc: Andrea Arcangeli , Andrew Morton , "Dr. David Alan Gilbert" , Hillf Danton , Mike Kravetz , Pavel Emelyanov , LKML , Mike Rapoport The commit dc0ef0df7b6a (mm: make mmap_sem for write waits killable for mm syscalls) replaced call to vm_munmap in munmap syscall with open coded version to allow different waits on mmap_sem in munmap syscall and vm_munmap. Now both functions use down_write_killable, so we can restore the call to vm_munmap from the munmap system call. Signed-off-by: Mike Rapoport --- mm/mmap.c | 9 +-------- 1 file changed, 1 insertion(+), 8 deletions(-) diff --git a/mm/mmap.c b/mm/mmap.c index b729084..f040ea0 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2680,15 +2680,8 @@ int vm_munmap(unsigned long start, size_t len) SYSCALL_DEFINE2(munmap, unsigned long, addr, size_t, len) { - int ret; - struct mm_struct *mm = current->mm; - profile_munmap(addr); - if (down_write_killable(&mm->mmap_sem)) - return -EINTR; - ret = do_munmap(mm, addr, len); - up_write(&mm->mmap_sem); - return ret; + return vm_munmap(addr, len); } -- 1.9.1 -- 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