From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 17DEAC43381 for ; Thu, 21 Mar 2019 17:03:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id E6D4A2190A for ; Thu, 21 Mar 2019 17:03:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728602AbfCURDR (ORCPT ); Thu, 21 Mar 2019 13:03:17 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48984 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725985AbfCURDR (ORCPT ); Thu, 21 Mar 2019 13:03:17 -0400 Received: from smtp.corp.redhat.com (int-mx08.intmail.prod.int.phx2.redhat.com [10.5.11.23]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 1E59688AB1; Thu, 21 Mar 2019 17:03:17 +0000 (UTC) Received: from warthog.procyon.org.uk (ovpn-121-98.rdu2.redhat.com [10.10.121.98]) by smtp.corp.redhat.com (Postfix) with ESMTP id 89AEA19C57; Thu, 21 Mar 2019 17:03:11 +0000 (UTC) Organization: Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 From: David Howells In-Reply-To: References: <155316885201.29437.3428987891437242750.stgit@warthog.procyon.org.uk> <155316888615.29437.17558157678296689830.stgit@warthog.procyon.org.uk> To: Kees Cook Cc: dhowells@redhat.com, Al Viro , Anton Vorontsov , Colin Cross , Tony Luck , "linux-fsdevel@vger.kernel.org" , LKML Subject: Re: [RFC PATCH 4/8] vfs: Convert pstore to fs_context MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-ID: <26698.1553187790.1@warthog.procyon.org.uk> Date: Thu, 21 Mar 2019 17:03:10 +0000 Message-ID: <26699.1553187790@warthog.procyon.org.uk> X-Scanned-By: MIMEDefang 2.84 on 10.5.11.23 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.26]); Thu, 21 Mar 2019 17:03:17 +0000 (UTC) Sender: linux-fsdevel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-fsdevel@vger.kernel.org Kees Cook wrote: > Why the separation between parse and apply now? Is this due to the > reconfigure calls? (i.e. why not call pstore_set_kmsg_bytes() in > pstore_parse_param()? Because parameter parsing is now done up front, before the creation of the superblock of the invocation of the reconfigure method - so there's still a bunch of places that can error out before you know you're going to be successful in creating/reconfiguring the superblock. David