From patchwork Wed Nov 30 22:07:56 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Matthew Wilcox (Oracle)" X-Patchwork-Id: 13060489 X-Patchwork-Delegate: kuba@kernel.org Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6098AC352A1 for ; Wed, 30 Nov 2022 22:08:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229799AbiK3WIW (ORCPT ); Wed, 30 Nov 2022 17:08:22 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:56282 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229764AbiK3WIH (ORCPT ); Wed, 30 Nov 2022 17:08:07 -0500 Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 038F358BDC for ; Wed, 30 Nov 2022 14:08:07 -0800 (PST) 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: References:In-Reply-To:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To: Content-Type:Content-ID:Content-Description; bh=6lONMjeDGYr9GURTEU9mXmeq1Gc9m2yzsRQTSZ/cy00=; b=p0WKC4Ym0iVOfwWMLJIwWghpXd wCiF/OXhsOZ39NY7q8snE1L6gNVOHKvHCN7p5HTAFLD8phCN63uwfNjVrcaT5S34hhO2k9tcg5riL IPGIXZN8n/ZJSRUNeUKxcvex0/a2eeNIi9mKIGneKvR4Z4pPR90UM3ZrPVirOIfCTiiWQO43Wd3UC /ZuxysHrqbZp1mSC/dUiT/KKLx/o5lLdpNZa49cNL7JRBEK+iB8bWsklXzwl51h+xI8wyWOTvxN3d GVKwce0D1SUzh4I2xoi3MuruxXe0M3AFz+6xuxfHT0RPT9lmQca7rkyUgu2wNLskKfR78PJRPyqk/ R7YfUeaQ==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1p0VFO-00FLVq-0v; Wed, 30 Nov 2022 22:08:06 +0000 From: "Matthew Wilcox (Oracle)" To: Jesper Dangaard Brouer , Ilias Apalodimas Cc: "Matthew Wilcox (Oracle)" , netdev@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 17/24] page_pool: Convert page_pool_return_skb_page() to use netmem Date: Wed, 30 Nov 2022 22:07:56 +0000 Message-Id: <20221130220803.3657490-18-willy@infradead.org> X-Mailer: git-send-email 2.37.1 In-Reply-To: <20221130220803.3657490-1-willy@infradead.org> References: <20221130220803.3657490-1-willy@infradead.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org X-Patchwork-Delegate: kuba@kernel.org This function accesses the pagepool members of struct page directly, so it needs to become netmem. Add page_pool_put_full_netmem(). Signed-off-by: Matthew Wilcox (Oracle) --- include/net/page_pool.h | 8 +++++++- net/core/page_pool.c | 13 ++++++------- 2 files changed, 13 insertions(+), 8 deletions(-) diff --git a/include/net/page_pool.h b/include/net/page_pool.h index 4c730591de46..701f94947e8a 100644 --- a/include/net/page_pool.h +++ b/include/net/page_pool.h @@ -437,10 +437,16 @@ static inline void page_pool_put_page(struct page_pool *pool, } /* Same as above but will try to sync the entire area pool->max_len */ +static inline void page_pool_put_full_netmem(struct page_pool *pool, + struct netmem *nmem, bool allow_direct) +{ + page_pool_put_netmem(pool, nmem, -1, allow_direct); +} + static inline void page_pool_put_full_page(struct page_pool *pool, struct page *page, bool allow_direct) { - page_pool_put_page(pool, page, -1, allow_direct); + page_pool_put_full_netmem(pool, page_netmem(page), allow_direct); } /* Same as above but the caller must guarantee safe context. e.g NAPI */ diff --git a/net/core/page_pool.c b/net/core/page_pool.c index 39f09d011a46..b4540d242081 100644 --- a/net/core/page_pool.c +++ b/net/core/page_pool.c @@ -886,28 +886,27 @@ EXPORT_SYMBOL(page_pool_update_nid); bool page_pool_return_skb_page(struct page *page) { + struct netmem *nmem = page_netmem(compound_head(page)); struct page_pool *pp; - page = compound_head(page); - - /* page->pp_magic is OR'ed with PP_SIGNATURE after the allocation + /* nmem->pp_magic is OR'ed with PP_SIGNATURE after the allocation * in order to preserve any existing bits, such as bit 0 for the * head page of compound page and bit 1 for pfmemalloc page, so * mask those bits for freeing side when doing below checking, - * and page_is_pfmemalloc() is checked in __page_pool_put_page() + * and netmem_is_pfmemalloc() is checked in __page_pool_put_netmem() * to avoid recycling the pfmemalloc page. */ - if (unlikely((page->pp_magic & ~0x3UL) != PP_SIGNATURE)) + if (unlikely((nmem->pp_magic & ~0x3UL) != PP_SIGNATURE)) return false; - pp = page->pp; + pp = nmem->pp; /* Driver set this to memory recycling info. Reset it on recycle. * This will *not* work for NIC using a split-page memory model. * The page will be returned to the pool here regardless of the * 'flipped' fragment being in use or not. */ - page_pool_put_full_page(pp, page, false); + page_pool_put_full_netmem(pp, nmem, false); return true; }