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=-2.3 required=3.0 tests=DKIM_INVALID,DKIM_SIGNED, HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT 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 8D0B0C282C4 for ; Tue, 12 Feb 2019 07:08:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 5947B2184A for ; Tue, 12 Feb 2019 07:08:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=infradead.org header.i=@infradead.org header.b="iO3WJPBx" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727482AbfBLHIJ (ORCPT ); Tue, 12 Feb 2019 02:08:09 -0500 Received: from bombadil.infradead.org ([198.137.202.133]:34528 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1725930AbfBLHIJ (ORCPT ); Tue, 12 Feb 2019 02:08:09 -0500 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20170209; h=In-Reply-To:Content-Type:MIME-Version :References:Message-ID:Subject:Cc:To:From:Date:Sender:Reply-To: 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=Ku2VCrQiE+4GyFWV3Mm1fZsGmsZAL6FugjgOnoFb5UA=; b=iO3WJPBxaQWGqY7JarPwU0luA NCA77ivsRivD4EZBskLVyriOi7C8iXt1t22++R2LV7olv4xPVhI1xtaHFMbV92Xgobv22W6ic6KHo 5Eu68XMWKnBr3Spo5Dz8NUVHObnOuKQ2cjIIVF2YWeGwygTVp8dqCIMpVT9xz03yyulS/XSgVdoom PCaC0+HZ3WCiUamA8ZVQOwESE0QYg03e3p1F+45g2bYj+m9BOpvULiJk4q3d+JWt0Dt4ufKzu9df0 IBhn0RXJ3INuUiU0Rc8NQW6GG+Bu3GQczfi7RJdJ9STG97nQ95mSIGTK9itgFEw1jqhoNDK/YXhjh lcrqzlOZw==; Received: from hch by bombadil.infradead.org with local (Exim 4.90_1 #2 (Red Hat Linux)) id 1gtSAq-0000xf-11; Tue, 12 Feb 2019 07:08:08 +0000 Date: Mon, 11 Feb 2019 23:08:07 -0800 From: Christoph Hellwig To: Anup Patel Cc: Palmer Dabbelt , Albert Ou , "linux-kernel@vger.kernel.org" , Christoph Hellwig , Atish Patra , Paul Walmsley , "linux-riscv@lists.infradead.org" Subject: Re: [PATCH v2 6/6] RISC-V: Implement keepinitrd kernel parameter Message-ID: <20190212070807.GD26747@infradead.org> References: <20190119132650.9978-1-anup.patel@wdc.com> <20190119132650.9978-7-anup.patel@wdc.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20190119132650.9978-7-anup.patel@wdc.com> User-Agent: Mutt/1.9.2 (2017-12-15) X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Sat, Jan 19, 2019 at 01:28:59PM +0000, Anup Patel wrote: > This patch implements keepinitrd kernel parameter. By default, > keepinitrd=1 but users can pass "keepinitrd=0" to free-up > initrd memory at boot-time in free_initrd_mem() function. > > The keepinitrd kernel parameter is already implemented by > unicore32, arm, and arm64 architectures and it is documented > at: Documentation/admin-guide/kernel-parameters.txt But why do we need it? Is there any good reason every not to free the initrd / initramfs memory when it is not used?