From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-12.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3A039C4727C for ; Mon, 21 Sep 2020 22:46:35 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D73AE23A63 for ; Mon, 21 Sep 2020 22:46:34 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="Q4dXJoQq" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728618AbgIUWqd (ORCPT ); Mon, 21 Sep 2020 18:46:33 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33582 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727447AbgIUWqd (ORCPT ); Mon, 21 Sep 2020 18:46:33 -0400 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 649AEC061755 for ; Mon, 21 Sep 2020 15:46:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=Content-Transfer-Encoding:MIME-Version: Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type:Content-ID: Content-Description:In-Reply-To:References; bh=/CL2jZW4pePP0RHRCCOv32Ria9oi2v/yKP8cKvax75g=; b=Q4dXJoQqauOLxi9+sOeBKQE6L1 ZSP3emcO3AK49qoInKdtP03kH0/1eTBGJaCt22W2TcpER3yhxslDBprt2ZyquiUi4gUArpu/MJrMO y3pWk5vNZo31mPDRbG/eBL5eY9Ei7etSQvNRMS4wOqSn8QzdKAHeLw2mmZntF93SsTZ6Z0KZy0HD1 IeiIRgIWmxz5Dt97XGatwDDzWuEU4/ZTeTje90sGKrfMZmEkRpEeYmgv2w2XqvV4fWObwBBPh33DQ oxUeR/PzVPs2pay2khX6HW20mUG2XA31KzGdfBake/OZGBzntjzO74XhJaewq3JWfVzm+WTjy9I3+ BokN+RZw==; Received: from willy by casper.infradead.org with local (Exim 4.92.3 #3 (Red Hat Linux)) id 1kKUZq-0005Oz-1d; Mon, 21 Sep 2020 22:46:30 +0000 From: "Matthew Wilcox (Oracle)" To: Andrew Morton Cc: "Matthew Wilcox (Oracle)" , linux-mm@kvack.org, linux-kernel@vger.kernel.org, hch@lst.de, Uladzislau Rezki Subject: [PATCH 1/2] vmalloc: Free pages as a batch Date: Mon, 21 Sep 2020 23:46:27 +0100 Message-Id: <20200921224628.20704-1-willy@infradead.org> X-Mailer: git-send-email 2.21.3 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use release_pages() to free the pages allocated by vmalloc(). This is slightly more efficient in terms of disabling and enabling IRQs once per batch instead of once per page. Signed-off-by: Matthew Wilcox (Oracle) --- mm/vmalloc.c | 10 +--------- 1 file changed, 1 insertion(+), 9 deletions(-) diff --git a/mm/vmalloc.c b/mm/vmalloc.c index be4724b916b3..3893fc8915c4 100644 --- a/mm/vmalloc.c +++ b/mm/vmalloc.c @@ -2263,16 +2263,8 @@ static void __vunmap(const void *addr, int deallocate_pages) vm_remove_mappings(area, deallocate_pages); if (deallocate_pages) { - int i; - - for (i = 0; i < area->nr_pages; i++) { - struct page *page = area->pages[i]; - - BUG_ON(!page); - __free_pages(page, 0); - } + release_pages(area->pages, area->nr_pages); atomic_long_sub(area->nr_pages, &nr_vmalloc_pages); - kvfree(area->pages); } -- 2.28.0