From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752110AbdKWCBM (ORCPT ); Wed, 22 Nov 2017 21:01:12 -0500 Received: from ozlabs.org ([103.22.144.67]:57199 "EHLO ozlabs.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751525AbdKWCBL (ORCPT ); Wed, 22 Nov 2017 21:01:11 -0500 Date: Thu, 23 Nov 2017 13:01:09 +1100 From: Stephen Rothwell To: Andrew Morton Cc: Linux-Next Mailing List , Linux Kernel Mailing List , Tetsuo Handa Subject: linux-next: build warning after merge of the akpm-current tree Message-ID: <20171123130109.41f47546@canb.auug.org.au> MIME-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Hi Andrew, After merging the akpm-current tree, today's linux-next build (arm multi_v7_defconfig) produced this warning: fs/super.c: In function 'sget_userns': fs/super.c:521:2: warning: ignoring return value of 'register_shrinker', declared with attribute warn_unused_result [-Wunused-result] register_shrinker(&s->s_shrink); ^ drivers/gpu/drm/ttm/ttm_page_alloc.c: In function 'ttm_pool_mm_shrink_init': drivers/gpu/drm/ttm/ttm_page_alloc.c:451:2: warning: ignoring return value of 'register_shrinker', declared with attribute warn_unused_result [-Wunused-result] register_shrinker(&manager->mm_shrink); ^ drivers/gpu/drm/ttm/ttm_page_alloc_dma.c: In function 'ttm_dma_pool_mm_shrink_init': drivers/gpu/drm/ttm/ttm_page_alloc_dma.c:1185:2: warning: ignoring return value of 'register_shrinker', declared with attribute warn_unused_result [-Wunused-result] register_shrinker(&manager->mm_shrink); ^ Introduced by commit 488251e1e892 ("mm,vmscan: mark register_shrinker() as __must_check") Yes, I realise that it is meant to flush the users out ... -- Cheers, Stephen Rothwell