From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx132.postini.com [74.125.245.132]) by kanga.kvack.org (Postfix) with SMTP id 1DF786B0062 for ; Mon, 16 Jul 2012 13:26:44 -0400 (EDT) Date: Mon, 16 Jul 2012 12:26:41 -0500 (CDT) From: Christoph Lameter Subject: Re: [PATCH 2/3] mm: fix possible incorrect return value of migrate_pages() syscall In-Reply-To: <1342455272-32703-2-git-send-email-js1304@gmail.com> Message-ID: References: <1342455272-32703-1-git-send-email-js1304@gmail.com> <1342455272-32703-2-git-send-email-js1304@gmail.com> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: Joonsoo Kim Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, Sasha Levin On Tue, 17 Jul 2012, Joonsoo Kim wrote > do_migrate_pages() can return the number of pages not migrated. > Because migrate_pages() syscall return this value directly, > migrate_pages() syscall may return the number of pages not migrated. > In fail case in migrate_pages() syscall, we should return error value. > So change err to -EIO Pages are not migrated because they are busy not because there is an error. So lets return EBUSY. -- 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