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 B62B1C433EF for ; Fri, 24 Dec 2021 06:23:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1351674AbhLXGXv (ORCPT ); Fri, 24 Dec 2021 01:23:51 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58654 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1351536AbhLXGXl (ORCPT ); Fri, 24 Dec 2021 01:23:41 -0500 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:e::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 36ADCC06175D; Thu, 23 Dec 2021 22:23:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; 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=OekyBfbXeB8EtlRGQip5DS+j5G95XxfKmI9Yn9Wc/qE=; b=kS//ilOGiMu6o+nWqHf5bfoj8+ hXF6jIh2sS7ug5totuZsthz+YsAdrtrGVC7D5g4r+jByzLTlGxgrIDM43qPD+DYJyGp9CxAaF22Ha ZJ1lkY+r4rkMPDNeKSijtXru3WTBgPfVnlQ+dUkhJwk0pFe2STnbNhXMHLBzte2AhSHjD9aa8ZVYA Du6Rsx3voZPi5Frme42WN9ofTesI8n3RTwsYySGJxQ20ivpuvDKYLMtp++UxFJrSerpwCCTHjOC4K RF9cyx55SrQxMWDNXgW+Qm6uNHQ2is7A6MKlkoRV2yHZtDWcbNPsaoM/x81e+aDazKxHiYatyGm7y QYhHnK9A==; Received: from p4fdb0b85.dip0.t-ipconnect.de ([79.219.11.133] helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1n0dzD-00DnCL-GS; Fri, 24 Dec 2021 06:23:28 +0000 From: Christoph Hellwig To: Andrew Morton , Konrad Rzeszutek Wilk Cc: Hugh Dickins , Seth Jennings , Dan Streetman , Vitaly Wool , Matthew Wilcox , linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org Subject: [PATCH 13/13] mm: hide the FRONTSWAP Kconfig symbol Date: Fri, 24 Dec 2021 07:22:46 +0100 Message-Id: <20211224062246.1258487-14-hch@lst.de> X-Mailer: git-send-email 2.30.2 In-Reply-To: <20211224062246.1258487-1-hch@lst.de> References: <20211224062246.1258487-1-hch@lst.de> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Select FRONTSWAP from ZSWAP instead of prompting for it. Signed-off-by: Christoph Hellwig --- mm/Kconfig | 18 +++--------------- 1 file changed, 3 insertions(+), 15 deletions(-) diff --git a/mm/Kconfig b/mm/Kconfig index 430240289b02b..3326ee3903f33 100644 --- a/mm/Kconfig +++ b/mm/Kconfig @@ -445,20 +445,7 @@ config HAVE_SETUP_PER_CPU_AREA bool config FRONTSWAP - bool "Enable frontswap to cache swap pages if tmem is present" - depends on SWAP - help - Frontswap is so named because it can be thought of as the opposite - of a "backing" store for a swap device. The data is stored into - "transcendent memory", memory that is not directly accessible or - addressable by the kernel and is of unknown and possibly - time-varying size. When space in transcendent memory is available, - a significant swap I/O reduction may be achieved. When none is - available, all frontswap calls are reduced to a single pointer- - compare-against-NULL resulting in a negligible performance hit - and swap data is stored as normal on the matching swap device. - - If unsure, say Y to enable frontswap. + bool config CMA bool "Contiguous Memory Allocator" @@ -523,7 +510,8 @@ config MEM_SOFT_DIRTY config ZSWAP bool "Compressed cache for swap pages (EXPERIMENTAL)" - depends on FRONTSWAP && CRYPTO=y + depends on SWAP && CRYPTO=y + select FRONTSWAP select ZPOOL help A lightweight compressed cache for swap pages. It takes -- 2.30.2