linux-kernel.vger.kernel.org archive mirror
 help / color / mirror / Atom feed
From: Mike Christie <michael.christie@oracle.com>
To: oleg@redhat.com, linux@leemhuis.info, nicolas.dichtel@6wind.com,
	axboe@kernel.dk, ebiederm@xmission.com,
	torvalds@linux-foundation.org, linux-kernel@vger.kernel.org,
	virtualization@lists.linux-foundation.org, mst@redhat.com,
	sgarzare@redhat.com, jasowang@redhat.com, stefanha@redhat.com,
	brauner@kernel.org
Subject: [PATCH 0/3] vhost: Fix freezer/ps regressions
Date: Sun, 21 May 2023 21:51:21 -0500	[thread overview]
Message-ID: <20230522025124.5863-1-michael.christie@oracle.com> (raw)

The following patches made over Linus's tree fix the 2 bugs:

1. vhost worker task shows up as a process forked from the parent
that did VHOST_SET_OWNER ioctl instead of a process under root/kthreadd.
This was causing breaking scripts.
2. vhost_tasks didn't disable or add support for freeze requests.

The following patches fix these issues by making the vhost_task task
a thread under the process that did the VHOST_SET_OWNER and uses
get_signal() to handle freeze and SIGSTOP/KILL signals which is required
when using CLONE_THREAD (really CLONE_THREAD requires CLONE_SIGHAND
which requires SIGKILL/STOP to be supported).



             reply	other threads:[~2023-05-22  2:51 UTC|newest]

Thread overview: 52+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-05-22  2:51 Mike Christie [this message]
2023-05-22  2:51 ` [PATCH 1/3] signal: Don't always put SIGKILL in shared_pending Mike Christie
2023-05-23 15:30   ` Eric W. Biederman
2023-05-22  2:51 ` [PATCH 2/3] signal: Don't exit for PF_USER_WORKER tasks Mike Christie
2023-05-22  2:51 ` [PATCH 3/3] fork, vhost: Use CLONE_THREAD to fix freezer/ps regression Mike Christie
2023-05-22 12:30   ` Oleg Nesterov
2023-05-22 17:00     ` Mike Christie
2023-05-22 17:47       ` Oleg Nesterov
2023-05-23 12:15         ` Oleg Nesterov
2023-05-23 15:57           ` Eric W. Biederman
2023-05-24 14:10             ` Oleg Nesterov
2023-05-24 14:44               ` Eric W. Biederman
2023-05-25 11:55                 ` Oleg Nesterov
2023-05-25 15:30                   ` Eric W. Biederman
2023-05-25 16:20                     ` Linus Torvalds
2023-05-27  9:49                       ` Eric W. Biederman
2023-05-27 16:12                         ` Linus Torvalds
2023-05-28  1:17                           ` Eric W. Biederman
2023-05-28  1:21                             ` Linus Torvalds
2023-05-29 11:19                             ` Oleg Nesterov
2023-05-29 16:09                               ` michael.christie
2023-05-29 17:46                                 ` Oleg Nesterov
2023-05-29 17:54                                   ` Oleg Nesterov
2023-05-29 19:03                                     ` Mike Christie
2023-05-29 19:35                                   ` Mike Christie
2023-05-29 19:46                                     ` michael.christie
2023-05-30  2:48                                       ` Eric W. Biederman
2023-05-30  2:38                                 ` Eric W. Biederman
2023-05-30 15:34                                   ` Mike Christie
2023-05-31  3:30                                   ` Mike Christie
2023-05-29 16:11                               ` michael.christie
2023-05-30 14:15                               ` Christian Brauner
2023-05-30 17:55                                 ` Oleg Nesterov
2023-05-30 15:01                         ` Eric W. Biederman
2023-05-31  5:22             ` Jason Wang
2023-05-24  0:02           ` Mike Christie
2023-05-25 16:15           ` Mike Christie
2023-05-28  1:41             ` Eric W. Biederman
2023-05-28 19:29               ` Mike Christie
2023-05-31  5:22           ` Jason Wang
2023-05-31  7:25             ` Oleg Nesterov
2023-05-31  8:17               ` Jason Wang
2023-05-31  9:14                 ` Oleg Nesterov
2023-06-01  2:44                   ` Jason Wang
2023-06-01  7:43                     ` Oleg Nesterov
2023-06-02  5:03                       ` Jason Wang
2023-06-02 17:58                         ` Oleg Nesterov
2023-06-02 20:07                           ` Linus Torvalds
2023-06-05 14:20                             ` Oleg Nesterov
2023-05-22 19:40   ` Michael S. Tsirkin
2023-05-23 15:39     ` Eric W. Biederman
2023-05-23 15:48     ` Mike Christie

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20230522025124.5863-1-michael.christie@oracle.com \
    --to=michael.christie@oracle.com \
    --cc=axboe@kernel.dk \
    --cc=brauner@kernel.org \
    --cc=ebiederm@xmission.com \
    --cc=jasowang@redhat.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux@leemhuis.info \
    --cc=mst@redhat.com \
    --cc=nicolas.dichtel@6wind.com \
    --cc=oleg@redhat.com \
    --cc=sgarzare@redhat.com \
    --cc=stefanha@redhat.com \
    --cc=torvalds@linux-foundation.org \
    --cc=virtualization@lists.linux-foundation.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).