bdrv_wakeup(bs);
}
+/* Recursively call BlockDriver.bdrv_co_drain_begin/end callbacks */
static void bdrv_drain_invoke(BlockDriverState *bs, bool begin)
{
+ BdrvChild *child, *tmp;
BdrvCoDrainData data = { .bs = bs, .done = false, .begin = begin};
if (!bs->drv || (begin && !bs->drv->bdrv_co_drain_begin) ||
data.co = qemu_coroutine_create(bdrv_drain_invoke_entry, &data);
bdrv_coroutine_enter(bs, data.co);
BDRV_POLL_WHILE(bs, !data.done);
+
+ QLIST_FOREACH_SAFE(child, &bs->children, next, tmp) {
+ bdrv_drain_invoke(child->bs, begin);
+ }
}
static bool bdrv_drain_recurse(BlockDriverState *bs, bool begin)
BdrvChild *child, *tmp;
bool waited;
- /* Ensure any pending metadata writes are submitted to bs->file. */
- bdrv_drain_invoke(bs, begin);
-
/* Wait for drained requests to finish */
waited = BDRV_POLL_WHILE(bs, atomic_read(&bs->in_flight) > 0);
bdrv_parent_drained_begin(bs);
}
+ bdrv_drain_invoke(bs, true);
bdrv_drain_recurse(bs, true);
}
}
bdrv_parent_drained_end(bs);
+ bdrv_drain_invoke(bs, false);
bdrv_drain_recurse(bs, false);
aio_enable_external(bdrv_get_aio_context(bs));
}
aio_context_acquire(aio_context);
for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
if (aio_context == bdrv_get_aio_context(bs)) {
+ /* FIXME Calling this multiple times is wrong */
+ bdrv_drain_invoke(bs, true);
waited |= bdrv_drain_recurse(bs, true);
}
}
aio_context_acquire(aio_context);
aio_enable_external(aio_context);
bdrv_parent_drained_end(bs);
+ bdrv_drain_invoke(bs, false);
bdrv_drain_recurse(bs, false);
aio_context_release(aio_context);
}