From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Cyrus-Session-Id: sloti22d1t05-2858199-1521726612-2-7669837294065411851 X-Sieve: CMU Sieve 3.0 X-Spam-known-sender: no X-Spam-score: 0.0 X-Spam-hits: BAYES_00 -1.9, HEADER_FROM_DIFFERENT_DOMAINS 0.25, RCVD_IN_DNSWL_HI -5, T_RP_MATCHES_RCVD -0.01, LANGUAGES en, BAYES_USED global, SA_VERSION 3.4.0 X-Spam-source: IP='209.132.180.67', Host='vger.kernel.org', Country='CN', FromHeader='edu', MailFrom='org' X-Spam-charsets: plain='us-ascii' X-Resolved-to: greg@kroah.com X-Delivered-to: greg@kroah.com X-Mail-from: linux-api-owner@vger.kernel.org ARC-Seal: i=1; a=rsa-sha256; cv=none; d=messagingengine.com; s=arctest; t=1521726610; b=IJ8gEDqGF+f5iSXvbUhGXbetZS2yfBOajjzKjbluF/XyNW8 xvWcLmRIDZwAnINNcvZP5nR8zI1NN2RQdu1ESGLTsxkK5dEV+Nt/lEFTFtt5FYhw pjwdZHF8xWN1UQtbA1/gOxWeMigiKHYffRBPxtgy86y/xkfglhXD9WV2bVq/yLLz LSq6BgnrAt0uwXqOg550d9sTxf/vOhnMMyZXBxLjfkHMjuD4ZWPtk7xatHL1/JeY DFioiwBcG27qMhGG6VQUO2gQdxs1Y9c7iGsZwQDXCiRmwk0GVUqQugmt9TMAibE2 3OTuzVHSeQmb7ZE3QIe5MJLz9+JrRu3VaK/j4Xw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=date:from:to:cc:subject:message-id :references:mime-version:content-type:in-reply-to:sender :list-id; s=arctest; t=1521726610; bh=9AQbUXgsFcuRZ49JBrflj6b0Yg kWR3iF1Qo54RvKtxQ=; b=TFITurQmxQ0PO/CNiy4raMML0gtcHYtgNa0Xjulsec gt7vLqIZAQA6TyfgKBTKH8UFYDVL8QrXTper/SzPIqnxir8T2gI/8H4cjGe7KxWt ldEf9S9hV7js+IDrLpEO4Sc26NlW2fWdsPw/whcCLhlDOH5gntUlG9Mnwf1vtWpe HpfjE68nST59rRQjyp3WnZI9RLfXx1oiGgWb3PxOphZ7Xovru7uFerg2rVD2eexz +bD5d6Z55Snrp6q3ROasZ4aJT/FmgH195L3qfZ+2pjfvFMTNY7HNAhJ1UUsTSwsd yJr4dsSIso7cKrGJ3sWdhclMe5dLkHJdCN21sZiTje1g== ARC-Authentication-Results: i=1; mx5.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered, 1024-bit rsa key sha256) header.d=thunk.org header.i=@thunk.org header.b=Az1bfcjs x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=ef5046eb; dmarc=none (p=none,has-list-id=yes,d=none) header.from=mit.edu; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=mit.edu header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 Authentication-Results: mx5.messagingengine.com; arc=none (no signatures found); dkim=fail (message has been altered, 1024-bit rsa key sha256) header.d=thunk.org header.i=@thunk.org header.b=Az1bfcjs x-bits=1024 x-keytype=rsa x-algorithm=sha256 x-selector=ef5046eb; dmarc=none (p=none,has-list-id=yes,d=none) header.from=mit.edu; iprev=pass policy.iprev=209.132.180.67 (vger.kernel.org); spf=none smtp.mailfrom=linux-api-owner@vger.kernel.org smtp.helo=vger.kernel.org; x-aligned-from=fail; x-ptr=pass x-ptr-helo=vger.kernel.org x-ptr-lookup=vger.kernel.org; x-return-mx=pass smtp.domain=vger.kernel.org smtp.result=pass smtp_org.domain=kernel.org smtp_org.result=pass smtp_is_org_domain=no header.domain=mit.edu header.result=pass header_is_org_domain=yes; x-vs=clean score=-100 state=0 X-ME-VSCategory: clean Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753438AbeCVNuF (ORCPT ); Thu, 22 Mar 2018 09:50:05 -0400 Received: from imap.thunk.org ([74.207.234.97]:44520 "EHLO imap.thunk.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752738AbeCVNuD (ORCPT ); Thu, 22 Mar 2018 09:50:03 -0400 Date: Thu, 22 Mar 2018 09:49:58 -0400 From: "Theodore Y. Ts'o" To: Christoph Hellwig Cc: viro@zeniv.linux.org.uk, Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 28/28] random: convert to ->poll_mask Message-ID: <20180322134958.GB2852@thunk.org> Mail-Followup-To: "Theodore Y. Ts'o" , Christoph Hellwig , viro@zeniv.linux.org.uk, Avi Kivity , linux-aio@kvack.org, linux-fsdevel@vger.kernel.org, netdev@vger.kernel.org, linux-api@vger.kernel.org, linux-kernel@vger.kernel.org References: <20180321074032.14211-1-hch@lst.de> <20180321074032.14211-29-hch@lst.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20180321074032.14211-29-hch@lst.de> User-Agent: Mutt/1.9.4 (2018-02-28) X-SA-Exim-Connect-IP: X-SA-Exim-Mail-From: tytso@thunk.org X-SA-Exim-Scanned: No (on imap.thunk.org); SAEximRunCond expanded to false Sender: linux-api-owner@vger.kernel.org X-Mailing-List: linux-api@vger.kernel.org X-getmail-retrieved-from-mailbox: INBOX X-Mailing-List: linux-kernel@vger.kernel.org List-ID: On Wed, Mar 21, 2018 at 08:40:32AM +0100, Christoph Hellwig wrote: > The big change is that random_read_wait and random_write_wait are merged > into a single waitqueue that uses keyed wakeups. Because wait_event_* > doesn't know about that this will lead to occassional spurious wakeups > in _random_read and add_hwgenerator_randomness, but wait_event_* is > designed to handle these and were are not in a a hot path there. > > Signed-off-by: Christoph Hellwig Acked-by: Theodore Ts'o