From: Kevin Wolf <kwolf@redhat.com>
To: qemu-block@nongnu.org
Cc: kwolf@redhat.com, jsnow@redhat.com, qemu-devel@nongnu.org,
mreitz@redhat.com
Subject: [PATCH 0/2] mirror: Fix hang (operation waiting for itself/circular dependency)
Date: Wed, 25 Mar 2020 18:23:24 +0100 [thread overview]
Message-ID: <20200325172326.22347-1-kwolf@redhat.com> (raw)
The recent fix didn't actually fix the whole problem. Operations can't
only wait for themselves, but we can also end up with circular
dependencies like two operations waiting for each other to complete.
This reverts the first fix and implements another approach.
Kevin Wolf (2):
Revert "mirror: Don't let an operation wait for itself"
mirror: Wait only for in-flight operations
block/mirror.c | 29 ++++++++++++++++-------------
1 file changed, 16 insertions(+), 13 deletions(-)
--
2.20.1
next reply other threads:[~2020-03-25 17:24 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-03-25 17:23 Kevin Wolf [this message]
2020-03-25 17:23 ` [PATCH 1/2] Revert "mirror: Don't let an operation wait for itself" Kevin Wolf
2020-03-25 17:36 ` Eric Blake
2020-03-25 17:23 ` [PATCH 2/2] mirror: Wait only for in-flight operations Kevin Wolf
2020-03-25 17:39 ` Eric Blake
2020-03-25 17:49 ` [PATCH 0/2] mirror: Fix hang (operation waiting for itself/circular dependency) Kevin Wolf
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