From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ig0-f180.google.com (mail-ig0-f180.google.com [209.85.213.180]) by kanga.kvack.org (Postfix) with ESMTP id 96BDF6B0253 for ; Tue, 25 Aug 2015 12:39:51 -0400 (EDT) Received: by igfj19 with SMTP id j19so16101491igf.0 for ; Tue, 25 Aug 2015 09:39:51 -0700 (PDT) Received: from mail-ig0-x22e.google.com (mail-ig0-x22e.google.com. [2607:f8b0:4001:c05::22e]) by mx.google.com with ESMTPS id 18si10123853iok.118.2015.08.25.09.39.50 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 25 Aug 2015 09:39:50 -0700 (PDT) Received: by igui7 with SMTP id i7so15566030igu.0 for ; Tue, 25 Aug 2015 09:39:50 -0700 (PDT) MIME-Version: 1.0 In-Reply-To: <87h9npwtx3.fsf@rasmusvillemoes.dk> References: <20150823060443.GA9882@gmail.com> <20150823064603.14050.qmail@ns.horizon.com> <20150823081750.GA28349@gmail.com> <87h9npwtx3.fsf@rasmusvillemoes.dk> Date: Tue, 25 Aug 2015 09:39:50 -0700 Message-ID: Subject: Re: [PATCH 3/3 v3] mm/vmalloc: Cache the vmalloc memory info From: Linus Torvalds Content-Type: text/plain; charset=UTF-8 Sender: owner-linux-mm@kvack.org List-ID: To: Rasmus Villemoes Cc: Ingo Molnar , George Spelvin , Dave Hansen , Linux Kernel Mailing List , linux-mm , Peter Zijlstra , Rik van Riel , David Rientjes On Sun, Aug 23, 2015 at 2:56 PM, Rasmus Villemoes wrote: > > [Maybe one could just remove the fields and see if anybody actually > notices/cares any longer. Or, if they are only used by kernel > developers, put them in their own file.] I'm actually inclined to try exactly that for 4.3, and then take Ingo's patch as a fallback in case somebody actually notices. I'm not convinced anybody actually uses those values, and they are getting *less* relevant rather than more (on 64-bit, those values really don't matter, since the vmalloc space isn't really a limitation), so let's try removing them and seeing what happens. And then we know what we can do if somebody does actually notice. Linus -- 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