From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753653AbeBSTqH (ORCPT ); Mon, 19 Feb 2018 14:46:07 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:44500 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753466AbeBSTqF (ORCPT ); Mon, 19 Feb 2018 14:46:05 -0500 From: Matthew Wilcox To: Andrew Morton Cc: Matthew Wilcox , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org Subject: [PATCH v7 01/61] radix tree test suite: Check reclaim bit Date: Mon, 19 Feb 2018 11:44:56 -0800 Message-Id: <20180219194556.6575-2-willy@infradead.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180219194556.6575-1-willy@infradead.org> References: <20180219194556.6575-1-willy@infradead.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Matthew Wilcox In order to test the memory allocation failure paths, the radix tree test suite fails allocations if __GFP_NOWARN is set. That happens to work for the radix tree implementation, but the semantics we really want are that we want to fail allocations which are not GFP_KERNEL. Do this by failing allocations which don't have the DIRECT_RECLAIM bit set. Signed-off-by: Matthew Wilcox --- tools/testing/radix-tree/linux.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c index 6903ccf35595..f7f3caed3650 100644 --- a/tools/testing/radix-tree/linux.c +++ b/tools/testing/radix-tree/linux.c @@ -29,7 +29,7 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, int flags) { struct radix_tree_node *node; - if (flags & __GFP_NOWARN) + if (!(flags & __GFP_DIRECT_RECLAIM)) return NULL; pthread_mutex_lock(&cachep->lock); -- 2.16.1