LKML Archive mirror
 help / color / mirror / Atom feed
From: Davidlohr Bueso <>
Subject: [PATCH 0/2] fs/epoll: restore user-visible behavior upon event ready
Date: Mon,  5 Apr 2021 16:10:23 -0700	[thread overview]
Message-ID: <> (raw)


This series tries to address a change in user visible behavior,
reported in:

Epoll does not report an event to all the threads running epoll_wait()
on the same epoll descriptor. Unsurprisingly, this was bisected back to
339ddb53d373 (fs/epoll: remove unnecessary wakeups of nested epoll), which
has had various problems in the past, beyond only nested epoll usage.


Davidlohr Bueso (2):
  kselftest: introduce new epoll test case
  fs/epoll: restore waking from ep_done_scan()

 fs/eventpoll.c                                |  6 +++
 .../filesystems/epoll/epoll_wakeup_test.c     | 44 +++++++++++++++++++
 2 files changed, 50 insertions(+)


             reply	other threads:[~2021-04-05 23:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-04-05 23:10 Davidlohr Bueso [this message]
2021-04-05 23:10 ` [PATCH 1/2] kselftest: introduce new epoll test case Davidlohr Bueso
2021-04-05 23:10 ` [PATCH 2/2] fs/epoll: restore waking from ep_done_scan() Davidlohr Bueso
2021-04-06  1:50   ` Andrew Morton
2021-04-06  3:22     ` Davidlohr Bueso
2021-04-06  5:09       ` Andrew Morton

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:

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

  git send-email \ \ \ \ \ \ \ \ \

* 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 read-only IMAP folder(s) and NNTP newsgroup(s).