__blkcg_iolatency_throttle

Name:__blkcg_iolatency_throttle

Proto:static void __blkcg_iolatency_throttle(struct rq_qos *rqos, struct iolatency_grp *iolat, bool issue_as_root, bool use_memdelay)

Type:void

Parameter:

Type	Parameter	Name
struct rq_qos *	rqos
struct iolatency_grp *	iolat
bool	issue_as_root
bool	use_memdelay

285

286

use_delay = atomic_read( & use_delay)

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If use_delay Then lkcg_schedule_throttle - this task needs to check for throttling*@q: the request queue IO was submitted on*@use_memdelay: do we charge this to memory delay for PSI* This is called by the IO controller when we know there's delay accumulated

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If issue_as_root || fatal_signal_pending(current process) Then

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atomic_inc( & inflight)

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Return

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q_qos_wait - throttle on a rqw if we need to*@rqw: rqw to throttle on*@private_data: caller provided specific data*@acquire_inflight_cb: inc the rqw->inflight counter if we can*@cleanup_cb: the callback to cleanup in case we race with a waker

**Caller**
Name	Describe
blkcg_iolatency_throttle

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