From: Davidlohr Bueso <dave@stgolabs.net>
To: akpm@linux-foundation.org
Cc: jbaron@akamai.com, rpenyaev@suse.de, viro@zeniv.linux.org.uk,
linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org,
dave@stgolabs.net
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: <20210405231025.33829-1-dave@stgolabs.net> (raw)
Hi,
This series tries to address a change in user visible behavior,
reported in:
https://bugzilla.kernel.org/show_bug.cgi?id=208943
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.
Thanks!
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(+)
--
2.26.2
next 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
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