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block: move restarting of throttled reqs to block/throttle-groups.c

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We want to remove throttled_reqs from block/io.c.  This is the easy
part---hide the handling of throttled_reqs during disable/enable of
throttling within throttle-groups.c.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Paolo Bonzini 2016-04-07 18:33:31 +02:00 • committed by Kevin Wolf
parent 733bbc8cea
commit a72f641407
3 changed files with 16 additions and 14 deletions
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14
block/throttle-groups.c
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@ -313,6 +313,17 @@ void coroutine_fn throttle_group_co_io_limits_intercept(BlockDriverState *bs,
qemu_mutex_unlock(&tg->lock);
}
void throttle_group_restart_bs(BlockDriverState *bs)
{
int i;
for (i = 0; i < 2; i++) {
while (qemu_co_enter_next(&bs->throttled_reqs[i])) {
;
}
}
}
/* Update the throttle configuration for a particular group. Similar
* to throttle_config(), but guarantees atomicity within the
* throttling group.
@ -335,6 +346,9 @@ void throttle_group_config(BlockDriverState *bs, ThrottleConfig *cfg)
}
throttle_config(ts, tt, cfg);
qemu_mutex_unlock(&tg->lock);
qemu_co_enter_next(&bs->throttled_reqs[0]);
qemu_co_enter_next(&bs->throttled_reqs[1]);
}
/* Get the throttle configuration from a particular group. Similar to