From mboxrd@z Thu Jan 1 00:00:00 1970 From: Matthew Wilcox Subject: [PATCH v5 36/78] mm: Convert __do_page_cache_readahead to XArray Date: Fri, 15 Dec 2017 14:04:08 -0800 Message-ID: <20171215220450.7899-37-willy@infradead.org> References: <20171215220450.7899-1-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=MDKFJp3HyYeXWWFjGAja8GeGO jTe14rhfGpNpNrCjTbOszcfa5jcgbvhy0d/+6ZITxvsEzPws6yh3n3zumPQEiPeAoUOdGSLEFofqF NRrlm0CPB/hGQ+lSdkc9hOR4IfPPpw2q6t7k8UiS7fFbuagSb0mhiTs4SreIdzclBt5sTyaKAVvEu 41fwoknVPt3sYxMoaxZ0GiKsaWmmkptwZFrO18dpEcheEgm1X1T5xujkVDuGRDTYRC/zFlK1QAIHr XmIGULOEh8MEVFisE0M6szYekTPDqJ0ICo9MayWWOa1pSxsQCSLjHdX4f7ouAJBc7zQlYAIwKSIJs gpiSia+rQ==; In-Reply-To: <20171215220450.7899-1-willy@infradead.org> Sender: owner-linux-mm@kvack.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 , Ross Zwisler , David Howells , Shaohua Li , Jens Axboe , Rehas Sachdeva , Marc Zyngier , 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-raid@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; -- 2.15.1 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org