From patchwork Wed Jan 17 20:20:59 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 10172641 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 4D3EE60230 for ; Thu, 18 Jan 2018 09:46:20 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 41D6525D99 for ; Thu, 18 Jan 2018 09:46:20 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 40613274B4; Thu, 18 Jan 2018 09:46:20 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.1 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_MED,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 06ED7274D0 for ; Thu, 18 Jan 2018 09:46:20 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 44E8E6E5DE; Thu, 18 Jan 2018 09:40:45 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from bombadil.infradead.org (bombadil.infradead.org [65.50.211.133]) by gabe.freedesktop.org (Postfix) with ESMTPS id A09BD6E3A1 for ; Wed, 17 Jan 2018 20:22:47 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=References:In-Reply-To:Message-Id: Date:Subject:Cc:To:From:Sender:Reply-To:MIME-Version:Content-Type: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Id: List-Help:List-Unsubscribe:List-Subscribe:List-Post:List-Owner:List-Archive; bh=D8M3hOFBbLyULrl9YVFK8Bg7yKABGG8u8Da+4wV0B9U=; b=XArDuX/NLr7EJYq5JM2WdyLPN cJ8VL9lwzCBt68XEhw8TIkfgFaHN5PXMhIWvWmufjjXKc5n40f7v1tmDRRaz3Ii3RsNnmuDDW7gxO 5YQJ4WjpMPVY0ePclVFtTiKmdM7vo00/8bMaKob9jhGk7ey7gHAw3wT5hk+1lw5/FdoyxzC5PsiIg eXrMy8qr1BDFKsfX1pPowPO28y/C3G2BXAUtp/JaG6iC/rNZZQvkSg94ek7fJScbtSieGfDmz/2EM PaDe+Ub3AC1zACTX1VdyE9M/AmrNUpAXYNHSVUlGddD4jayBZ/1u2DPGgQ5QChHhLiXmhcNvBGG0j z7ME3FZpA==; Received: from willy by bombadil.infradead.org with local (Exim 4.89 #1 (Red Hat Linux)) id 1ebuEI-0005pT-3y; Wed, 17 Jan 2018 20:22:38 +0000 From: Matthew Wilcox To: linux-kernel@vger.kernel.org Date: Wed, 17 Jan 2018 12:20:59 -0800 Message-Id: <20180117202203.19756-36-willy@infradead.org> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180117202203.19756-1-willy@infradead.org> References: <20180117202203.19756-1-willy@infradead.org> Cc: linux-s390@vger.kernel.org, David Howells , linux-nilfs@vger.kernel.org, Matthew Wilcox , linux-sh@vger.kernel.org, intel-gfx@lists.freedesktop.org, linux-usb@vger.kernel.org, linux-remoteproc@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-xfs@vger.kernel.org, linux-mm@kvack.org, iommu@lists.linux-foundation.org, Stefano Stabellini , linux-fsdevel@vger.kernel.org, cgroups@vger.kernel.org, Bjorn Andersson , linux-btrfs@vger.kernel.org Subject: [Intel-gfx] [PATCH v6 35/99] mm: Convert __do_page_cache_readahead to XArray X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP From: Matthew Wilcox This one is trivial. Signed-off-by: Matthew Wilcox --- mm/readahead.c | 4 +--- 1 file changed, 1 insertion(+), 3 deletions(-) diff --git a/mm/readahead.c b/mm/readahead.c index f64b31b3a84a..66bcaffd47f0 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -174,9 +174,7 @@ int __do_page_cache_readahead(struct address_space *mapping, struct file *filp, if (page_offset > end_index) break; - rcu_read_lock(); - page = radix_tree_lookup(&mapping->pages, page_offset); - rcu_read_unlock(); + page = xa_load(&mapping->pages, page_offset); if (page && !xa_is_value(page)) continue;