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block: remove AIOCBInfo->get_aio_context()

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The synchronous bdrv_aio_cancel() function needs the acb's AioContext so
it can call aio_poll() to wait for cancellation.

It turns out that all users run under the BQL in the main AioContext, so
this callback is not needed.

Remove the callback, mark bdrv_aio_cancel() GLOBAL_STATE_CODE just like
its blk_aio_cancel() caller, and poll the main loop AioContext.

The purpose of this cleanup is to identify bdrv_aio_cancel() as an API
that does not work with the multi-queue block layer.

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-ID: <20230912231037.826804-2-stefanha@redhat.com>
Reviewed-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Klaus Jensen <k.jensen@samsung.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Stefan Hajnoczi 2023-09-12 19:10:33 -04:00 • committed by Kevin Wolf
parent 52b10c9c0c
commit 652b0dd808
8 changed files with 10 additions and 57 deletions
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7
hw/nvme/ctrl.c
View file

@ -2130,11 +2130,6 @@ static inline bool nvme_is_write(NvmeRequest *req)
rw->opcode == NVME_CMD_WRITE_ZEROES;
}
static AioContext *nvme_get_aio_context(BlockAIOCB *acb)
{
return qemu_get_aio_context();
}
static void nvme_misc_cb(void *opaque, int ret)
{
NvmeRequest *req = opaque;
@ -3302,7 +3297,6 @@ static void nvme_flush_cancel(BlockAIOCB *acb)
static const AIOCBInfo nvme_flush_aiocb_info = {
.aiocb_size = sizeof(NvmeFlushAIOCB),
.cancel_async = nvme_flush_cancel,
.get_aio_context = nvme_get_aio_context,
};
static void nvme_do_flush(NvmeFlushAIOCB *iocb);
@ -6478,7 +6472,6 @@ static void nvme_format_cancel(BlockAIOCB *aiocb)
static const AIOCBInfo nvme_format_aiocb_info = {
.aiocb_size = sizeof(NvmeFormatAIOCB),
.cancel_async = nvme_format_cancel,
.get_aio_context = nvme_get_aio_context,
};
static void nvme_format_set(NvmeNamespace *ns, uint8_t lbaf, uint8_t mset,