Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751982AbaGGQaI (ORCPT ); Mon, 7 Jul 2014 12:30:08 -0400 Received: from one.firstfloor.org ([193.170.194.197]:60385 "EHLO one.firstfloor.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750957AbaGGQaG (ORCPT ); Mon, 7 Jul 2014 12:30:06 -0400 Date: Mon, 7 Jul 2014 18:30:03 +0200 From: Andi Kleen To: Sebastien Buisson Cc: Andi Kleen , viro@zeniv.linux.org.uk, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, Andrew Morton Subject: Re: [PATCH] Allow increasing the buffer-head per-CPU LRU size Message-ID: <20140707163003.GA18735@two.firstfloor.org> References: <53B667F9.90306@bull.net> <87y4w6sbp7.fsf@tassilo.jf.intel.com> <53BA772C.6040506@bull.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <53BA772C.6040506@bull.net> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > diff --git a/fs/Kconfig b/fs/Kconfig > index c229f82..c08844c 100644 > --- a/fs/Kconfig > +++ b/fs/Kconfig > @@ -268,4 +268,13 @@ endif # NETWORK_FILESYSTEMS > source "fs/nls/Kconfig" > source "fs/dlm/Kconfig" > > +config BH_LRU_SIZE > + int > + range 8 64 > + default "16" So who sets it then? You need it for ext4 and quota right? So this combination should set it at least. Something like (unested) It would be also good to audit or test other file systems if they need the same if that's possible. config BH_LARGE_LRU bool depends on (EXT4_FS && QUOTA) config BH_LRU_SIZE .... default "16" if BH_LARGE_LRU default "8" if !BH_LARGE_LRU -Andi -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/