From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: [PATCH v6 35/99] mm: Convert __do_page_cache_readahead to XArray Date: Wed, 17 Jan 2018 12:20:59 -0800 Message-ID: <20180117202203.19756-36-willy@infradead.org> References: <20180117202203.19756-1-willy@infradead.org> Return-path: 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 In-Reply-To: <20180117202203.19756-1-willy@infradead.org> Sender: linux-kernel-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-kernel@vger.kernel.org Cc: Matthew Wilcox , linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-nilfs@vger.kernel.org, linux-btrfs@vger.kernel.org, linux-xfs@vger.kernel.org, linux-usb@vger.kernel.org, Bjorn Andersson , Stefano Stabellini , iommu@lists.linux-foundation.org, linux-remoteproc@vger.kernel.org, linux-s390@vger.kernel.org, intel-gfx@lists.freedesktop.org, cgroups@vger.kernel.org, linux-sh@vger.kernel.org, David Howells 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; -- 2.15.1