From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pd0-f171.google.com (mail-pd0-f171.google.com [209.85.192.171]) by kanga.kvack.org (Postfix) with ESMTP id D467D6B0035 for ; Thu, 3 Jul 2014 14:38:41 -0400 (EDT) Received: by mail-pd0-f171.google.com with SMTP id fp1so640800pdb.16 for ; Thu, 03 Jul 2014 11:38:41 -0700 (PDT) Received: from e28smtp08.in.ibm.com (e28smtp08.in.ibm.com. [122.248.162.8]) by mx.google.com with ESMTPS id sx5si33519149pab.126.2014.07.03.11.38.39 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Thu, 03 Jul 2014 11:38:40 -0700 (PDT) Received: from /spool/local by e28smtp08.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 4 Jul 2014 00:08:36 +0530 Received: from d28relay01.in.ibm.com (d28relay01.in.ibm.com [9.184.220.58]) by d28dlp01.in.ibm.com (Postfix) with ESMTP id 5FCA7E0053 for ; Fri, 4 Jul 2014 00:09:55 +0530 (IST) Received: from d28av05.in.ibm.com (d28av05.in.ibm.com [9.184.220.67]) by d28relay01.in.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id s63Idv1G62783626 for ; Fri, 4 Jul 2014 00:09:57 +0530 Received: from d28av05.in.ibm.com (localhost [127.0.0.1]) by d28av05.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id s63IcXlE022374 for ; Fri, 4 Jul 2014 00:08:33 +0530 Message-ID: <53B5A26B.7040606@linux.vnet.ibm.com> Date: Fri, 04 Jul 2014 00:05:23 +0530 From: Raghavendra K T MIME-Version: 1.0 Subject: Re: [PATCH] mm readahead: Fix sys_readahead breakage by reverting 2MB limit (bug 79111) References: <1404392547-11648-1-git-send-email-raghavendra.kt@linux.vnet.ibm.com> <53B59CB5.9060004@linux.vnet.ibm.com> In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Linus Torvalds Cc: Andrew Morton , Fengguang Wu , David Cohen , Al Viro , Damien Ramonda , Jan Kara , David Rientjes , Nishanth Aravamudan , linux-mm , Linux Kernel Mailing List On 07/03/2014 11:52 PM, Linus Torvalds wrote: > On Thu, Jul 3, 2014 at 11:11 AM, Raghavendra K T > wrote: >>> >>> If this comes from some man-page, >> >> Yes it is. > > Ok, googling actually finds a fairly recent patch to fix it > > http://www.spinics.net/lists/linux-mm/msg70517.html > > and several much older "that's not true" comments. Thanks. I had missed that. > > That said, the bugzilla entry you mentioned does mention "can't boot > 3.14 now". I'm not sure what the meaning of that sentence is, though. > Does it mean "can't boot 3.14 to test it because the machine is busy", > or is it a typo and really meant 3.15, and that some bootup script > *depended* on readahead()? I don't know. It seems strange. I think your guess is right, it meant to say "I can't boot it anymore since I already upgraded to 3.15", because eventually bootup script (if it is) should have to read IIUC. -- 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