From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-322982-1516222515-2-5662567585640134459 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES enro, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='US', FromHeader='org', MailFrom='org' X-Spam-charsets: X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-usb-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1516222515; b=GiWpBZ1Zy6oKyiAn5EXRvlo1K/cT9g3xtTyCIl8Ufl5pCot CJqbZ75RvH8PizinudWUCzkO9ynBCr+PVb0Y48ppVQeh0Pp9HuVGGFS35zsZ2oyV Fcpsmjcotd+LfXO8zBrxn0Pia+bMhyEoTi2faMX7RtFZmC0iwJ9x2+DqxmX259+I g+KL9klPGcBqNychVSDGsOKBF+Y9HuggldfqWie6M5IhJcK9xulzZGfwKdbeuPxz wYOttqw5wXgPWAyyspaBwZF/6oKFZ2zguij8bTAlrYOQJ7UOLoZZTNecc30YIY23 33yITbgEzwm0SFmQciUgqN0oKTDPMNqtL20zGtA== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:sender:list-id; s=arctest; t=1516222515; bh=rrqUUIfDEzYRDv597m89m/pES+Tu7YvIxv4pCWraS00=; b=SN2FpK6nt/lf c3MQHNKHOnqSB4Fhg+dpbfXcSVI0TW7aP0F3mViyILQSEfECI3I0ThZaQ3z3wRdr 9DiACwq77ciDDVt0zsgL5ctWT0XIUH9ORIn97UX7ZFMyq7cN2qLiY+y9pmJGO7a3 LJo6Hf2rCFoMaj5901aze3mFMgps4ORHLjpLxAdn46uK3sf/HMdMg2Rsvud1C085 vrio6KxNHhIJxOJVC+sJlHypj/z5/u7x7WGyhDXvLnzi5qz1wJht9pQEWCH6HJOv JxPjONiR9GGhz1atwb4qdsPW9IYNg7iS3LR4DoaUn4rfN+XAPXSw0uCmXe83Y+6J 5fhZKuCJPA== ARC-Authentication-Results: i=1; mx1.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=XArDuX/N x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=infradead.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=infradead.org header.result=pass header_is_org_domain=yes Authentication-Results: mx1.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered; 2048-bit rsa key sha256) header.d=infradead.org header.i=@infradead.org header.b=XArDuX/N x-bits=2048 x-keytype=rsa x-algorithm=sha256 x-selector=bombadil.20170209; dmarc=none (p=none,has-list-id=yes,d=none) header.from=infradead.org; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-usb-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=infradead.org header.result=pass header_is_org_domain=yes Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755047AbeAQUzM (ORCPT ); Wed, 17 Jan 2018 15:55:12 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:33081 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753630AbeAQUWj (ORCPT ); Wed, 17 Jan 2018 15:22:39 -0500 From: Matthew Wilcox 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 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> X-Mailer: git-send-email 2.14.3 In-Reply-To: <20180117202203.19756-1-willy@infradead.org> References: <20180117202203.19756-1-willy@infradead.org> Sender: linux-usb-owner@vger.kernel.org X-Mailing-List: linux-usb@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: 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