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[Qemu-devel] [PATCH v4 0/6] virtio: Merge virtio-{blk, scsi} host notifi
From: |
Fam Zheng |
Subject: |
[Qemu-devel] [PATCH v4 0/6] virtio: Merge virtio-{blk, scsi} host notifier handling paths |
Date: |
Wed, 13 Jul 2016 13:09:42 +0800 |
v4: Drop patch 1. [Cornelia]
Add the last trivial patch.
v3: Rebase to master.
Squash 4 into 3. [Paolo]
Add comment and commit message. [Stefan]
Add Stefan's r-b in patch 1 and 2.
v2: Only convert virtio-{blk,scsi}. [Paolo]
The benifit of this is we don't use event_notifier_set_handler even in
non-dataplane now, which in turn makes virtio-blk and virtio-scsi follow block
layer aio context semantics. Specifically, I/O requests must come from
blk_get_aio_context(blk) events, rather than iohandler_get_aio_context(), so
that bdrv_drained_begin/end will work as expected.
Patch 4 reverts the hack (ab27c3b5e7) we added for 2.6. Lately, commit
b880481579 added another pair of bdrv_drained_begin/end so the crash cannot
happen even without ab27c3b5e7, but in order to avoid leaking requests, patch
two is still a must.
Fam Zheng (6):
virtio: Add typedef for handle_output
virtio: Introduce virtio_add_queue_aio
virtio-blk: Call virtio_add_queue_aio
virtio-scsi: Call virtio_add_queue_aio
Revert "mirror: Workaround for unexpected iohandler events during
completion"
virtio-scsi: Replace HandleOutput typedef
block/mirror.c | 9 ---------
hw/block/virtio-blk.c | 2 +-
hw/scsi/virtio-scsi.c | 14 ++++++-------
hw/virtio/virtio.c | 45 +++++++++++++++++++++++++++++++++--------
include/hw/virtio/virtio-scsi.h | 6 ++----
include/hw/virtio/virtio.h | 8 ++++++--
6 files changed, 52 insertions(+), 32 deletions(-)
--
2.7.4
- [Qemu-devel] [PATCH v4 0/6] virtio: Merge virtio-{blk, scsi} host notifier handling paths,
Fam Zheng <=
- [Qemu-devel] [PATCH v4 2/6] virtio: Introduce virtio_add_queue_aio, Fam Zheng, 2016/07/13
- [Qemu-devel] [PATCH v4 4/6] virtio-scsi: Call virtio_add_queue_aio, Fam Zheng, 2016/07/13
- [Qemu-devel] [PATCH v4 1/6] virtio: Add typedef for handle_output, Fam Zheng, 2016/07/13
- [Qemu-devel] [PATCH v4 3/6] virtio-blk: Call virtio_add_queue_aio, Fam Zheng, 2016/07/13
- [Qemu-devel] [PATCH v4 5/6] Revert "mirror: Workaround for unexpected iohandler events during completion", Fam Zheng, 2016/07/13