From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: [PATCH v9 37/61] mm: Convert __do_page_cache_readahead to XArray Date: Tue, 13 Mar 2018 06:26:15 -0700 Message-ID: <20180313132639.17387-38-willy@infradead.org> References: <20180313132639.17387-1-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=Dnse6NpPcxn4uwM47SH2ODqvDBOEEd/I1UOPFvRSo1Q=; b=jp9oe7whrexJcmXbOQw0tnU43 q/fYHvCEOMh/0BWOXzQQKRcDEaVKWODRmmFZVCUOUpgUh8tMcg4p9ukBc3r9fZWjpv/0pdIa97kfE s6oNO4ZblTg6Q7ZX+x3QxwpV1AMf21V/hjbtqohN+j0ID2nBim0SWgSUVW4nlNIbnpckLyrE/MM09 DasUr4NPwIaW4Kdm/JeuzmDOwLTREM72fRkNG7WkkYx40YpHGDpjHNxVpbgSkj3MFyy2XjjRJ70L9 Nd+lTP1ch2SE3XX9AxtjkiF9qybkRyoNs3sM0ftMtjLlP5SWV4W8/ZZoE92PzCdnUvXlRvz5J+QH9 In-Reply-To: <20180313132639.17387-1-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: Andrew Morton Cc: Matthew Wilcox , linux-kernel@vger.kernel.org, linux-mm@kvack.org, linux-fsdevel@vger.kernel.org, Ryusuke Konishi , linux-nilfs@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 3ff9763b0461..5f528d649d5e 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->i_pages, page_offset); - rcu_read_unlock(); + page = xa_load(&mapping->i_pages, page_offset); if (page && !xa_is_value(page)) continue; -- 2.16.1