From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.linuxfoundation.org ([140.211.169.12]:36474 "EHLO mail.linuxfoundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751870AbdJXMQt (ORCPT ); Tue, 24 Oct 2017 08:16:49 -0400 Subject: Patch "vmbus: fix missing signaling in hv_signal_on_read()" has been added to the 4.9-stable tree To: decui@microsoft.com, gregkh@linuxfoundation.org, jon.Starks@microsoft.com, kys@microsoft.com, stable@vger.kernel.org, stephen@networkplumber.org, sthemmin@microsoft.com Cc: , From: Date: Tue, 24 Oct 2017 14:16:57 +0200 In-Reply-To: Message-ID: <150884741719458@kroah.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ANSI_X3.4-1968 Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org List-ID: This is a note to let you know that I've just added the patch titled vmbus: fix missing signaling in hv_signal_on_read() to the 4.9-stable tree which can be found at: http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary The filename of the patch is: vmbus-fix-missing-signaling-in-hv_signal_on_read.patch and it can be found in the queue-4.9 subdirectory. If you, or anyone else, feels it should not be added to the stable tree, please let know about it. >>From decui@microsoft.com Tue Oct 24 14:15:52 2017 From: Dexuan Cui Date: Thu, 19 Oct 2017 18:07:35 +0000 Subject: vmbus: fix missing signaling in hv_signal_on_read() To: "gregkh@linuxfoundation.org" , "stable@vger.kernel.org" Cc: KY Srinivasan , Stephen Hemminger , Stephen Hemminger Message-ID: From: Dexuan Cui [Fixes upstream in a much larger set of patches that are not worth backporting to 4.9 - gregkh] When the space available before start of reading (cached_write_sz) is the same as the host required space (pending_sz), we need to still signal host. Fixes: 433e19cf33d3 ("Drivers: hv: vmbus: finally fix hv_need_to_signal_on_read()") Signed-off-by: John Starks Signed-off-by: Dexuan Cui Signed-off-by: Stephen Hemminger Signed-off-by: Greg Kroah-Hartman --- Hi Greg, as we discussed, I'm resending this patch, and please only apply it to linux-4.9.y (i.e. v4.9.57 as of today). include/linux/hyperv.h | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) --- a/include/linux/hyperv.h +++ b/include/linux/hyperv.h @@ -1521,11 +1521,11 @@ static inline void hv_signal_on_read(st cur_write_sz = hv_get_bytes_to_write(rbi); - if (cur_write_sz < pending_sz) + if (cur_write_sz <= pending_sz) return; cached_write_sz = hv_get_cached_bytes_to_write(rbi); - if (cached_write_sz < pending_sz) + if (cached_write_sz <= pending_sz) vmbus_setevent(channel); return; Patches currently in stable-queue which might be from decui@microsoft.com are queue-4.9/vmbus-fix-missing-signaling-in-hv_signal_on_read.patch