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block: Move actual I/O throttling to BlockBackend

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Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
This commit is contained in:
Kevin Wolf 2016-03-21 13:30:30 +01:00
parent 27ccdd5259
commit 441565b279
4 changed files with 13 additions and 14 deletions
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5
block/throttle-groups.c
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@ -284,18 +284,17 @@ static void schedule_next_request(BlockBackend *blk, bool is_write)
* if necessary, and schedule the next request using a round robin
* algorithm.
*
* @bs: the current BlockDriverState
* @blk: the current BlockBackend
* @bytes: the number of bytes for this I/O
* @is_write: the type of operation (read/write)
*/
void coroutine_fn throttle_group_co_io_limits_intercept(BlockDriverState *bs,
void coroutine_fn throttle_group_co_io_limits_intercept(BlockBackend *blk,
unsigned int bytes,
bool is_write)
{
bool must_wait;
BlockBackend *token;
BlockBackend *blk = bs->blk;
BlockBackendPublic *blkp = blk_get_public(blk);
ThrottleGroup *tg = container_of(blkp->throttle_state, ThrottleGroup, ts);
qemu_mutex_lock(&tg->lock);