From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-pf0-f197.google.com (mail-pf0-f197.google.com [209.85.192.197]) by kanga.kvack.org (Postfix) with ESMTP id 917966B0006 for ; Sat, 16 Jun 2018 22:02:33 -0400 (EDT) Received: by mail-pf0-f197.google.com with SMTP id z9-v6so6621087pfe.23 for ; Sat, 16 Jun 2018 19:02:33 -0700 (PDT) Received: from bombadil.infradead.org (bombadil.infradead.org. [2607:7c80:54:e::133]) by mx.google.com with ESMTPS id i5-v6si9922839pgt.346.2018.06.16.19.01.06 for (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Sat, 16 Jun 2018 19:01:06 -0700 (PDT) From: Matthew Wilcox Subject: [PATCH v14 40/74] mm: Convert __do_page_cache_readahead to XArray Date: Sat, 16 Jun 2018 19:00:18 -0700 Message-Id: <20180617020052.4759-41-willy@infradead.org> In-Reply-To: <20180617020052.4759-1-willy@infradead.org> References: <20180617020052.4759-1-willy@infradead.org> Sender: owner-linux-mm@kvack.org List-ID: To: linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org Cc: Matthew Wilcox , Jan Kara , Jeff Layton , Lukas Czerner , Ross Zwisler , Christoph Hellwig , Goldwyn Rodrigues , Nicholas Piggin , Ryusuke Konishi , linux-nilfs@vger.kernel.org, Jaegeuk Kim , Chao Yu , linux-f2fs-devel@lists.sourceforge.net 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 59998ca31f2a..07f9734dc79f 100644 --- a/mm/readahead.c +++ b/mm/readahead.c @@ -174,9 +174,7 @@ unsigned int __do_page_cache_readahead(struct address_space *mapping, if (page_offset > end_index) break; - rcu_read_lock(); - page = radix_tree_lookup(&mapping->i_pages, page_offset); - rcu_read_unlock(); + page = xa_load(&mapping->i_pages, page_offset); if (page && !xa_is_value(page)) { /* * Page already present? Kick off the current batch of -- 2.17.1