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| author | Stefan Hajnoczi <stefanha@redhat.com> | 2023-09-14 10:01:01 -0400 |
|---|---|---|
| committer | Kevin Wolf <kwolf@redhat.com> | 2023-12-21 22:49:27 +0100 |
| commit | 6b5aa3a0fdfc74d42f9f7705fa6ced73253b06b1 (patch) | |
| tree | c52ba19cb38e53c742722297aff69004c9d18835 | |
| parent | c1135913c655ecfac2f3074671663f4251c8177f (diff) | |
| download | qemu-6b5aa3a0fdfc74d42f9f7705fa6ced73253b06b1.zip qemu-6b5aa3a0fdfc74d42f9f7705fa6ced73253b06b1.tar.gz qemu-6b5aa3a0fdfc74d42f9f7705fa6ced73253b06b1.tar.bz2 | |
virtio-blk: don't lock AioContext in the submission code path
There is no need to acquire the AioContext lock around blk_aio_*() or
blk_get_geometry() anymore. I/O plugging (defer_call()) also does not
require the AioContext lock anymore.
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230914140101.1065008-5-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
| -rw-r--r-- | hw/block/virtio-blk.c | 5 |
1 files changed, 0 insertions, 5 deletions
diff --git a/hw/block/virtio-blk.c b/hw/block/virtio-blk.c index f5315df..e110f97 100644 --- a/hw/block/virtio-blk.c +++ b/hw/block/virtio-blk.c @@ -1111,7 +1111,6 @@ void virtio_blk_handle_vq(VirtIOBlock *s, VirtQueue *vq) MultiReqBuffer mrb = {}; bool suppress_notifications = virtio_queue_get_notification(vq); - aio_context_acquire(blk_get_aio_context(s->blk)); defer_call_begin(); do { @@ -1137,7 +1136,6 @@ void virtio_blk_handle_vq(VirtIOBlock *s, VirtQueue *vq) } defer_call_end(); - aio_context_release(blk_get_aio_context(s->blk)); } static void virtio_blk_handle_output(VirtIODevice *vdev, VirtQueue *vq) @@ -1168,7 +1166,6 @@ static void virtio_blk_dma_restart_bh(void *opaque) s->rq = NULL; } - aio_context_acquire(blk_get_aio_context(s->conf.conf.blk)); while (req) { VirtIOBlockReq *next = req->next; if (virtio_blk_handle_request(req, &mrb)) { @@ -1192,8 +1189,6 @@ static void virtio_blk_dma_restart_bh(void *opaque) /* Paired with inc in virtio_blk_dma_restart_cb() */ blk_dec_in_flight(s->conf.conf.blk); - - aio_context_release(blk_get_aio_context(s->conf.conf.blk)); } static void virtio_blk_dma_restart_cb(void *opaque, bool running, |