From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mx2.suse.de ([195.135.220.15]:34896 "EHLO mx1.suse.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751618AbdISPMM (ORCPT ); Tue, 19 Sep 2017 11:12:12 -0400 Date: Tue, 19 Sep 2017 17:09:06 +0200 From: David Sterba To: Colin King Cc: Chris Mason , Josef Bacik , David Sterba , linux-btrfs@vger.kernel.org, kernel-janitors@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH] btrfs: make array types static const, reduces object code size Message-ID: <20170919150906.GG29043@twin.jikos.cz> Reply-To: dsterba@suse.cz References: <20170919150123.23913-1-colin.king@canonical.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii In-Reply-To: <20170919150123.23913-1-colin.king@canonical.com> Sender: linux-btrfs-owner@vger.kernel.org List-ID: On Tue, Sep 19, 2017 at 04:01:23PM +0100, Colin King wrote: > From: Colin Ian King > > Don't populate the read-only array types on the stack, instead make > it static const. Makes the object code smaller by nearly 60 bytes: > > Before: > text data bss dec hex filename > 90536 6552 64 97152 17b80 fs/btrfs/ioctl.o > > After: > text data bss dec hex filename > 90414 6616 64 97094 17b46 fs/btrfs/ioctl.o > > Signed-off-by: Colin Ian King Reviewed-by: David Sterba