throtl_dispatch_tg

Name:throtl_dispatch_tg

Proto:static int throtl_dispatch_tg(struct throtl_grp *tg)

Type:int

Parameter:

Type	Parameter	Name
struct throtl_grp *	tg

1176

sq = this group's service queue

1177

nr_reads = 0 , nr_writes = 0

1178

max_nr_reads = Max dispatch from a group in 1 round * 3 / 4

1179

max_nr_writes = Max dispatch from a group in 1 round - max_nr_reads

1184

When (bio = hrotl_peek_queued - peek the first bio on a qnode list*@queued: the qnode list to peek) && Returns whether one can dispatch a bio or not. Also returns approx number* of jiffies to wait before this bio is with-in IO rate and can be dispatched cycle

1187

tg_dispatch_one_bio(tg, Return the data direction, READ or WRITE.(bio))

1188

1190

If nr_reads >= max_nr_reads Then Break

1194

When (bio = hrotl_peek_queued - peek the first bio on a qnode list*@queued: the qnode list to peek) && Returns whether one can dispatch a bio or not. Also returns approx number* of jiffies to wait before this bio is with-in IO rate and can be dispatched cycle

1197

tg_dispatch_one_bio(tg, Return the data direction, READ or WRITE.(bio))

1198

1200

If nr_writes >= max_nr_writes Then Break

1204

Return nr_reads + nr_writes

**Caller**
Name	Describe
throtl_select_dispatch

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