From patchwork Fri Dec 15 22:04:36 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 10116411 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 469CC60327 for ; Fri, 15 Dec 2017 22:24:35 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 392C428E57 for ; Fri, 15 Dec 2017 22:24:35 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 2D3C229E49; Fri, 15 Dec 2017 22:24:35 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.8 required=2.0 tests=BAYES_00,DKIM_SIGNED, RCVD_IN_DNSWL_HI,T_DKIM_INVALID autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A789B28E57 for ; Fri, 15 Dec 2017 22:24:34 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756776AbdLOWVl (ORCPT ); Fri, 15 Dec 2017 17:21:41 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:48784 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756586AbdLOWFZ (ORCPT ); Fri, 15 Dec 2017 17:05:25 -0500 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=7tPDoqs87772IfLubU8+tHtD87IxbWpnhrTcqQR7GQ0=; b=RuuaFQoFx91hAiDcIS6mrqbpl siLk4Zo4gdZ0fndX2MS4+7zHrSkfSGykGgxohYsjj4odKlMcZSg7i8K6gFOgyKzMxAl6+GLPhy9IW 0O9Ts26HR7sWH130HgpjP40t8og+5Sf6aOGl6aBXIGg3joXEmtHQueEw4MfJ/DO5czpAwViCtcmAH zDY4amEHlltj3fagcp32TktjxAV3btBQa9KiK7GlqqRAI0wJuq7Afo9yaJ4CdX9zY1JErwxEMV4KU 2XI0GuHNQe18xKHmkLpUYDxovH0ZLCARm+IVwCfIKQooC3cbL7X8supk32lm1SCxtr/6WXTo5/Cy8 zYU2+sTNg==; Received: from willy by bombadil.infradead.org with local (Exim 4.87 #1 (Red Hat Linux)) id 1ePy6J-0002Hl-4b; Fri, 15 Dec 2017 22:05:03 +0000 From: Matthew Wilcox 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 Subject: [PATCH v5 64/78] dax: Convert dax_insert_mapping_entry to XArray Date: Fri, 15 Dec 2017 14:04:36 -0800 Message-Id: <20171215220450.7899-65-willy@infradead.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20171215220450.7899-1-willy@infradead.org> References: <20171215220450.7899-1-willy@infradead.org> Sender: linux-btrfs-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-btrfs@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Matthew Wilcox Signed-off-by: Matthew Wilcox --- fs/dax.c | 18 ++++++------------ 1 file changed, 6 insertions(+), 12 deletions(-) diff --git a/fs/dax.c b/fs/dax.c index 9cfd4fcc0b0d..a3e795ad2493 100644 --- a/fs/dax.c +++ b/fs/dax.c @@ -498,9 +498,9 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, void *entry, sector_t sector, unsigned long flags, bool dirty) { - struct radix_tree_root *pages = &mapping->pages; void *new_entry; pgoff_t index = vmf->pgoff; + XA_STATE(xas, &mapping->pages, index); if (dirty) __mark_inode_dirty(mapping->host, I_DIRTY_PAGES); @@ -516,7 +516,7 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, PAGE_SIZE, 0); } - xa_lock_irq(&mapping->pages); + xas_lock_irq(&xas); new_entry = dax_radix_locked_entry(sector, flags); if (dax_is_zero_entry(entry) || dax_is_empty_entry(entry)) { @@ -528,21 +528,15 @@ static void *dax_insert_mapping_entry(struct address_space *mapping, * existing entry is a PMD, we will just leave the PMD in the * tree and dirty it if necessary. */ - struct radix_tree_node *node; - void **slot; - void *ret; - - ret = __radix_tree_lookup(pages, index, &node, &slot); - WARN_ON_ONCE(ret != entry); - __radix_tree_replace(pages, node, slot, - new_entry, NULL); + void *prev = xas_store(&xas, new_entry); + WARN_ON_ONCE(prev != entry); entry = new_entry; } if (dirty) - radix_tree_tag_set(pages, index, PAGECACHE_TAG_DIRTY); + xas_set_tag(&xas, PAGECACHE_TAG_DIRTY); - xa_unlock_irq(&mapping->pages); + xas_unlock_irq(&xas); return entry; }