From: Stefan Hajnoczi <stefanha@redhat.com>
To: qemu-devel@nongnu.org
Cc: Paolo Bonzini <pbonzini@redhat.com>,
"Michael S. Tsirkin" <mst@redhat.com>, Fam Zheng <fam@euphon.net>,
kwolf@redhat.com, <qemu-block@nongnu.org>,
Stefan Hajnoczi <stefanha@redhat.com>
Subject: [PATCH 0/2] virtio-scsi: stop using aio_disable_external() during unplug
Date: Thu, 23 Mar 2023 14:56:05 -0400 [thread overview]
Message-ID: <20230323185607.1458987-1-stefanha@redhat.com> (raw)
The aio_disable_external() API is a solution for stopping I/O during critical
sections. The newer BlockDevOps->drained_begin/end/poll() callbacks offer a
cleaner solution that supports the upcoming multi-queue block layer. This
series removes aio_disable_external() from the virtio-scsi emulation code.
Patch 1 is a fix for something I noticed when reading the code.
Patch 2 replaces aio_disable_external() with functionality for safe hot unplug
that's mostly already present in the SCSI emulation code.
Stefan Hajnoczi (2):
virtio-scsi: avoid race between unplug and transport event
virtio-scsi: stop using aio_disable_external() during unplug
hw/scsi/scsi-bus.c | 3 ++-
hw/scsi/scsi-disk.c | 1 +
hw/scsi/virtio-scsi.c | 21 +++++++++------------
3 files changed, 12 insertions(+), 13 deletions(-)
--
2.39.2
next reply other threads:[~2023-03-23 18:57 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-03-23 18:56 Stefan Hajnoczi [this message]
2023-03-23 18:56 ` [PATCH 1/2] virtio-scsi: avoid race between unplug and transport event Stefan Hajnoczi
2023-03-23 18:56 ` [PATCH 2/2] virtio-scsi: stop using aio_disable_external() during unplug Stefan Hajnoczi
2023-04-04 10:21 ` [PATCH 0/2] " Daniil Tatianin
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