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qcow2-threads: use thread_pool_submit_co 

Use thread_pool_submit_co, instead of reinventing it here. Note, that
thread_pool_submit_aio() never returns NULL, so checking it was an
extra thing.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-id: 20190506142741.41731-4-vsementsov@virtuozzo.com
Signed-off-by: Max Reitz <mreitz@redhat.com>
master
Vladimir Sementsov-Ogievskiy 2019-05-06 17:27:36 +03:00 committed by Max Reitz
parent 56e2f1d898
commit 269062efc8
1 changed files with 2 additions and 15 deletions
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17
block/qcow2-threads.c
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@ -144,17 +144,11 @@ static int qcow2_compress_pool_func(void *opaque)
return 0;
}
static void qcow2_compress_complete(void *opaque, int ret)
{
qemu_coroutine_enter(opaque);
}
static ssize_t coroutine_fn
qcow2_co_do_compress(BlockDriverState *bs, void *dest, size_t dest_size,
const void *src, size_t src_size, Qcow2CompressFunc func)
{
BDRVQcow2State *s = bs->opaque;
BlockAIOCB *acb;
ThreadPool *pool = aio_get_thread_pool(bdrv_get_aio_context(bs));
Qcow2CompressData arg = {
.dest = dest,
@ -169,16 +163,9 @@ qcow2_co_do_compress(BlockDriverState *bs, void *dest, size_t dest_size,
}
s->nb_compress_threads++;
acb = thread_pool_submit_aio(pool, qcow2_compress_pool_func, &arg,
qcow2_compress_complete,
qemu_coroutine_self());
if (!acb) {
s->nb_compress_threads--;
return -EINVAL;
}
qemu_coroutine_yield();
thread_pool_submit_co(pool, qcow2_compress_pool_func, &arg);
s->nb_compress_threads--;
qemu_co_queue_next(&s->compress_wait_queue);
return arg.ret;