Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754293AbdLFBHT (ORCPT ); Tue, 5 Dec 2017 20:07:19 -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 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-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2345 Lines: 73 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++) -- 2.15.0