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 Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id A7A85C433F5 for ; Sat, 29 Jan 2022 15:09:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244629AbiA2PJ2 (ORCPT ); Sat, 29 Jan 2022 10:09:28 -0500 Received: from isilmar-4.linta.de ([136.243.71.142]:37190 "EHLO isilmar-4.linta.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232848AbiA2PJ0 (ORCPT ); Sat, 29 Jan 2022 10:09:26 -0500 X-isilmar-external: YES X-isilmar-external: YES X-isilmar-external: YES Received: from owl.dominikbrodowski.net (owl.brodo.linta [10.2.0.111]) by isilmar-4.linta.de (Postfix) with ESMTPSA id 39BAF201416; Sat, 29 Jan 2022 15:09:25 +0000 (UTC) Received: by owl.dominikbrodowski.net (Postfix, from userid 1000) id 549A28075E; Sat, 29 Jan 2022 16:08:46 +0100 (CET) Date: Sat, 29 Jan 2022 16:08:46 +0100 From: Dominik Brodowski To: "Jason A. Donenfeld" Cc: linux-kernel@vger.kernel.org, tytso@mit.edu Subject: Re: [PATCH] random: wake up /dev/random writers after zap Message-ID: References: <20220128224906.104235-1-Jason@zx2c4.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20220128224906.104235-1-Jason@zx2c4.com> Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Am Fri, Jan 28, 2022 at 11:49:06PM +0100 schrieb Jason A. Donenfeld: > When account() is called, and the amount of entropy dips below > random_write_wakeup_bits, we wake up the random writers, so that they > can write some more in. However, the RNDZAPENTCNT/RNDCLEARPOOL ioctl > sets the entropy count to zero -- a potential reduction just like > account() -- but does not unblock writers. This commit adds the missing > logic to that ioctl to unblock waiting writers. > > Cc: Dominik Brodowski > Signed-off-by: Jason A. Donenfeld Reviewed-by: Dominik Brodowski Thanks, Dominik