Function report |
Source Code:block\blk-throttle.c |
Create Date:2022-07-28 17:42:38 |
Last Modify:2020-03-12 14:18:49 | Copyright©Brick |
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Name:tg_with_in_iops_limit
Proto:static bool tg_with_in_iops_limit(struct throtl_grp *tg, struct bio *bio, unsigned long *wait)
Type:bool
Parameter:
Type | Parameter | Name |
---|---|---|
struct throtl_grp * | tg | |
struct bio * | bio | |
unsigned long * | wait |
904 | jiffy_elapsed = jiffies - When did we start a new slice [rw] |
916 | tmp = tg_iops_limit(tg, rw) * jiffy_elapsed_rnd |
919 | If tmp > UINT_MAX Then io_allowed = UINT_MAX |
921 | Else io_allowed = tmp |
924 | If Number of bio's dispatched in current slice [rw] + 1 <= io_allowed Then |
931 | jiffy_wait = jiffy_elapsed_rnd - jiffy_elapsed |
933 | If wait Then wait = jiffy_wait |
935 | Return false |
Name | Describe |
---|---|
tg_may_dispatch | 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 |
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