From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pa0-f70.google.com (mail-pa0-f70.google.com [209.85.220.70]) by kanga.kvack.org (Postfix) with ESMTP id CE70C6B0253 for ; Wed, 3 Aug 2016 02:38:18 -0400 (EDT) Received: by mail-pa0-f70.google.com with SMTP id pp5so338530116pac.3 for ; Tue, 02 Aug 2016 23:38:18 -0700 (PDT) Received: from mx0a-001b2d01.pphosted.com (mx0a-001b2d01.pphosted.com. [148.163.156.1]) by mx.google.com with ESMTPS id v27si7317875pfj.178.2016.08.02.23.38.18 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 02 Aug 2016 23:38:18 -0700 (PDT) Received: from pps.filterd (m0098410.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.16.0.11/8.16.0.11) with SMTP id u736XtZT032908 for ; Wed, 3 Aug 2016 02:38:17 -0400 Received: from e23smtp01.au.ibm.com (e23smtp01.au.ibm.com [202.81.31.143]) by mx0a-001b2d01.pphosted.com with ESMTP id 24k0bme0w7-1 (version=TLSv1.2 cipher=AES256-SHA bits=256 verify=NOT) for ; Wed, 03 Aug 2016 02:38:17 -0400 Received: from localhost by e23smtp01.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Wed, 3 Aug 2016 16:38:14 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp01.au.ibm.com (Postfix) with ESMTP id 54A1C2CE802D for ; Wed, 3 Aug 2016 16:38:12 +1000 (EST) Received: from d23av01.au.ibm.com (d23av01.au.ibm.com [9.190.234.96]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id u736cCts32636930 for ; Wed, 3 Aug 2016 16:38:12 +1000 Received: from d23av01.au.ibm.com (localhost [127.0.0.1]) by d23av01.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id u736cBam027504 for ; Wed, 3 Aug 2016 16:38:12 +1000 Date: Wed, 3 Aug 2016 12:08:08 +0530 From: Srikar Dronamraju Subject: Re: [PATCH 1/2] mm: Allow disabling deferred struct page initialisation Reply-To: Srikar Dronamraju References: <1470143947-24443-1-git-send-email-srikar@linux.vnet.ibm.com> <1470143947-24443-2-git-send-email-srikar@linux.vnet.ibm.com> <57A0E1D1.8020608@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline In-Reply-To: <57A0E1D1.8020608@intel.com> Message-Id: <20160803063808.GI6310@linux.vnet.ibm.com> Sender: owner-linux-mm@kvack.org List-ID: To: Dave Hansen Cc: linux-mm@kvack.org, Mel Gorman , Vlastimil Babka , Michal Hocko , Andrew Morton , Michael Ellerman , linuxppc-dev@lists.ozlabs.org, mahesh@linux.vnet.ibm.com, hbathini@linux.vnet.ibm.com * Dave Hansen [2016-08-02 11:09:21]: > On 08/02/2016 06:19 AM, Srikar Dronamraju wrote: > > Kernels compiled with CONFIG_DEFERRED_STRUCT_PAGE_INIT will initialise > > only certain size memory per node. The certain size takes into account > > the dentry and inode cache sizes. However such a kernel when booting a > > secondary kernel will not be able to allocate the required amount of > > memory to suffice for the dentry and inode caches. This results in > > crashes like the below on large systems such as 32 TB systems. > > What's a "secondary kernel"? > I mean the kernel thats booted to collect the crash, On fadump, the first kernel acts as the secondary kernel i.e the same kernel is booted to collect the crash. -- Thanks and Regards Srikar Dronamraju -- 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