From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: [PATCH v4 35/73] mm: Convert __do_page_cache_readahead to XArray Date: Tue, 5 Dec 2017 16:41:21 -0800 Message-ID: <20171206004159.3755-36-willy@infradead.org> References: <20171206004159.3755-1-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=XQU2Kw3cHQT+EsBIjVX2LeyQu/xBqyMgwX17vGFfHB4=; b=fSLgD5srlTBwEcI+19/YbXOQK Cpaudn6Rj2JPUZKx4EtQBRxsFrEDexbJhCRgsELDzcN14xfN1T7SP2dwyd/o7bz+iXtAVuKiJPaoP uSlxarCB6Hu3C8VtSjzPQOe74WD23aBYrNc5UHj3OquRXhWMrax9+9il+FuiaPy4frSs9yFxdehV/ zAaWomJx3HQiBRegiUO7RZiiQM/E0WuzPrDzVNYRSBklnCRfcwIqrwjoczQezFrxpm8Z/brkcWDjM ia9mbzKTBQ/+0lD4UW960G53aCpudkdIIqeX8WWXvK+NQu/v/mduIe40SeDY74Wrgy2wtUTUP/IlK In-Reply-To: <20171206004159.3755-1-willy@infradead.org> Sender: linux-btrfs-owner@vger.kernel.org List-ID: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: Cc: Matthew Wilcox , Ross Zwisler , Jens Axboe , Rehas Sachdeva , 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, linux-kernel@vger.kernel.org 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; -- 2.15.0