From patchwork Wed Dec 6 00:41:13 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Matthew Wilcox X-Patchwork-Id: 10094813 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 EFA2260329 for ; Wed, 6 Dec 2017 01:12:38 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E088322B1F for ; Wed, 6 Dec 2017 01:12:38 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D54432785D; Wed, 6 Dec 2017 01:12:38 +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=unavailable 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 86C5E22B1F for ; Wed, 6 Dec 2017 01:12:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753845AbdLFBHJ (ORCPT ); Tue, 5 Dec 2017 20:07:09 -0500 Received: from bombadil.infradead.org ([65.50.211.133]:44304 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753301AbdLFAmK (ORCPT ); Tue, 5 Dec 2017 19:42:10 -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=tfB8KE2AEacdXmwTx7K5tSUqE7sxOKNJayGvrKE4tds=; b=DQNPe/RLWNgCeVvgOzD6GspKy TQkJrOo/8b6zEEKpNNMfe0jxPu3j78Ym9gZw3LnpP15GEg321UV7THSNmMvm6eUiCgPepA1Hj44dp ngZnnpfrcgcUQEGHEjbz2JCGUYWRmm6Moxsd0G0Dxw4YAD7PYDxG1ubwFBA3YMxMXSHLKJMcRmpMH 2+Nql02NN+GkwzaYuaixCS2w1omeAk12AgcvesornzNP3HUikF7ffUI+ihmB7p5M3fKte0jlSU4dC YksOUZlfEIPJKNhd5E3wqzAYkWmiaLEd5SIBIM0duzpzB30DS/lelgLV3ME7ut8g1N++s2edB7gWd 9shpiy6cQ==; Received: from willy by bombadil.infradead.org with local (Exim 4.87 #1 (Red Hat Linux)) id 1eMNmq-000142-Go; Wed, 06 Dec 2017 00:42:08 +0000 From: Matthew Wilcox Cc: Matthew Wilcox , Ross Zwisler , Jens Axboe , Rehas Sachdeva , 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-kernel@vger.kernel.org Subject: [PATCH v4 27/73] page cache: Convert delete_batch to XArray Date: Tue, 5 Dec 2017 16:41:13 -0800 Message-Id: <20171206004159.3755-28-willy@infradead.org> X-Mailer: git-send-email 2.9.5 In-Reply-To: <20171206004159.3755-1-willy@infradead.org> References: <20171206004159.3755-1-willy@infradead.org> To: unlisted-recipients:; (no To-header on input) 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 Rename the function from page_cache_tree_delete_batch to just page_cache_delete_batch. Signed-off-by: Matthew Wilcox --- mm/filemap.c | 21 +++++++-------------- 1 file changed, 7 insertions(+), 14 deletions(-) diff --git a/mm/filemap.c b/mm/filemap.c index 6c9cad248e7f..9e6158cfbaeb 100644 --- a/mm/filemap.c +++ b/mm/filemap.c @@ -276,7 +276,7 @@ void delete_from_page_cache(struct page *page) EXPORT_SYMBOL(delete_from_page_cache); /* - * page_cache_tree_delete_batch - delete several pages from page cache + * page_cache_delete_batch - delete several pages from page cache * @mapping: the mapping to which pages belong * @pvec: pagevec with pages to delete * @@ -289,23 +289,18 @@ EXPORT_SYMBOL(delete_from_page_cache); * * The function expects xa_lock to be held. */ -static void -page_cache_tree_delete_batch(struct address_space *mapping, +static void page_cache_delete_batch(struct address_space *mapping, struct pagevec *pvec) { - struct radix_tree_iter iter; - void **slot; + XA_STATE(xas, &mapping->pages, pvec->pages[0]->index); int total_pages = 0; int i = 0, tail_pages = 0; struct page *page; - pgoff_t start; - start = pvec->pages[0]->index; - radix_tree_for_each_slot(slot, &mapping->pages, &iter, start) { + xas_set_update(&xas, workingset_lookup_update(mapping)); + xas_for_each(&xas, page, ULONG_MAX) { if (i >= pagevec_count(pvec) && !tail_pages) break; - page = radix_tree_deref_slot_protected(slot, - &mapping->pages.xa_lock); if (xa_is_value(page)) continue; if (!tail_pages) { @@ -328,9 +323,7 @@ page_cache_tree_delete_batch(struct address_space *mapping, } else { tail_pages--; } - radix_tree_clear_tags(&mapping->pages, iter.node, slot); - __radix_tree_replace(&mapping->pages, iter.node, slot, NULL, - workingset_lookup_update(mapping)); + xas_store(&xas, NULL); total_pages++; } mapping->nrpages -= total_pages; @@ -351,7 +344,7 @@ void delete_from_page_cache_batch(struct address_space *mapping, unaccount_page_cache_page(mapping, pvec->pages[i]); } - page_cache_tree_delete_batch(mapping, pvec); + page_cache_delete_batch(mapping, pvec); xa_unlock_irqrestore(&mapping->pages, flags); for (i = 0; i < pagevec_count(pvec); i++)