From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 3FBA26B01C7 for ; Sat, 19 Jun 2010 10:17:46 -0400 (EDT) Received: by ewy21 with SMTP id 21so102427ewy.14 for ; Sat, 19 Jun 2010 07:17:44 -0700 (PDT) MIME-Version: 1.0 Reply-To: mtk.manpages@gmail.com In-Reply-To: <20100619140933.GM18946@basil.fritz.box> References: <200912081016.198135742@firstfloor.org> <20091208211647.9B032B151F@basil.firstfloor.org> <20100619132055.GK18946@basil.fritz.box> <20100619133000.GL18946@basil.fritz.box> <20100619140933.GM18946@basil.fritz.box> From: Michael Kerrisk Date: Sat, 19 Jun 2010 16:17:24 +0200 Message-ID: Subject: Re: [PATCH] [31/31] HWPOISON: Add a madvise() injector for soft page offlining Content-Type: text/plain; charset=ISO-8859-1 Sender: owner-linux-mm@kvack.org To: Andi Kleen Cc: fengguang.wu@intel.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Hi Andi, On Sat, Jun 19, 2010 at 4:09 PM, Andi Kleen wrote: > On Sat, Jun 19, 2010 at 03:43:28PM +0200, Michael Kerrisk wrote: >> Is there a userspace operation to unpoison (i.e., reverse MADV_SOFT_OFFLINE)? > > Yes, but it's only a debugfs interface currently. Okay -- thanks. >> I ask because I wondered if there is something additional to be documented. > > I don't think debugfs needs manpages atm. Okay. I edited your text somewhat. Could you please review the below. Cheers, Michael .TP .BR MADV_SOFT_OFFLINE " (Since Linux 2.6.33) Soft offline the pages in the range specified by .I addr and .IR length . This memory of each page in the specified range is copied to a new page, and the original page is offlined (i.e., no longer used, and taken out of normal memory management). The effect of the .B MADV_SOFT_OFFLINE operation is normally invisible to (i.e., does not change the semantics of) the calling process. This feature is intended for testing of memory error-handling code; it is only available if the kernel was configured with .BR CONFIG_MEMORY_FAILURE . -- 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