From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-yk0-f178.google.com (mail-yk0-f178.google.com [209.85.160.178]) by kanga.kvack.org (Postfix) with ESMTP id A50CF6B0075 for ; Thu, 27 Feb 2014 12:23:48 -0500 (EST) Received: by mail-yk0-f178.google.com with SMTP id 79so7404232ykr.9 for ; Thu, 27 Feb 2014 09:23:48 -0800 (PST) Received: from relay.sgi.com (relay3.sgi.com. [192.48.152.1]) by mx.google.com with ESMTP id t51si8483310yhg.100.2014.02.27.09.23.47 for ; Thu, 27 Feb 2014 09:23:47 -0800 (PST) From: Alex Thorlton Subject: [PATCH 4/4] exec: kill the unnecessary mm->def_flags setting in load_elf_binary() Date: Thu, 27 Feb 2014 11:23:26 -0600 Message-Id: In-Reply-To: References: In-Reply-To: References: Sender: owner-linux-mm@kvack.org List-ID: To: linux-kernel@vger.kernel.org Cc: Alex Thorlton , Gerald Schaefer , Martin Schwidefsky , Heiko Carstens , Christian Borntraeger , Andrew Morton , Paolo Bonzini , "Kirill A. Shutemov" , Mel Gorman , Rik van Riel , Ingo Molnar , Peter Zijlstra , Andrea Arcangeli , Oleg Nesterov , "Eric W. Biederman" , Alexander Viro , linux390@de.ibm.com, linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-api@vger.kernel.org load_elf_binary() sets current->mm->def_flags = def_flags and def_flags is always zero. Not only this looks strange, this is unnecessary because mm_init() has already set ->def_flags = 0. Signed-off-by: Alex Thorlton Suggested-by: Oleg Nesterov Cc: Gerald Schaefer Cc: Martin Schwidefsky Cc: Heiko Carstens Cc: Christian Borntraeger Cc: Andrew Morton Cc: Paolo Bonzini Cc: "Kirill A. Shutemov" Cc: Mel Gorman Cc: Rik van Riel Cc: Ingo Molnar Cc: Peter Zijlstra Cc: Andrea Arcangeli Cc: Oleg Nesterov Cc: "Eric W. Biederman" Cc: Alexander Viro Cc: linux390@de.ibm.com Cc: linux-s390@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: linux-mm@kvack.org Cc: linux-api@vger.kernel.org --- fs/binfmt_elf.c | 4 ---- 1 file changed, 4 deletions(-) diff --git a/fs/binfmt_elf.c b/fs/binfmt_elf.c index 67be295..d09bd9c 100644 --- a/fs/binfmt_elf.c +++ b/fs/binfmt_elf.c @@ -579,7 +579,6 @@ static int load_elf_binary(struct linux_binprm *bprm) unsigned long start_code, end_code, start_data, end_data; unsigned long reloc_func_desc __maybe_unused = 0; int executable_stack = EXSTACK_DEFAULT; - unsigned long def_flags = 0; struct pt_regs *regs = current_pt_regs(); struct { struct elfhdr elf_ex; @@ -719,9 +718,6 @@ static int load_elf_binary(struct linux_binprm *bprm) if (retval) goto out_free_dentry; - /* OK, This is the point of no return */ - current->mm->def_flags = def_flags; - /* Do this immediately, since STACK_TOP as used in setup_arg_pages may depend on the personality. */ SET_PERSONALITY(loc->elf_ex); -- 1.7.12.4 -- 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