blk_account_io_done

Name:blk_account_io_done

Proto:void blk_account_io_done(struct request *req, u64 now)

Type:void

Parameter:

Type	Parameter	Name
struct request *	req
u64	now

1334

If part && Contribute to IO statistics IFF:* a) it's attached to a gendisk, and* b) the queue had IO stats enabled when this request was started && Not (rq_flags & quest for flush sequence ) Then

1336

sgrp = op_stat_group(req_op(req))

1339

Macros to operate on percpu disk statistics:* {disk|part|all}_stat_{add|sub|inc|dec}() modify the stat counters* and should be called between disk_stat_lock() and* disk_stat_unlock()()

1340

1342

update_io_ticks(part, jiffies)

1343

part_stat_inc(part, ios[sgrp])

1344

part_stat_add(part, nsecs[sgrp], now - Time that this request was allocated for this IO. )

1345

part_stat_add(part, time_in_queue, secs_to_jiffies64 - Convert nsecs in u64 to jiffies64*@n: nsecs in u64* Unlike {m,u}secs_to_jiffies, type of input is not unsigned int but u64.* And this doesn't return MAX_JIFFY_OFFSET since this function is designed)

1346

part_dec_in_flight(q, part, rq_data_dir(req))

1348

hd_struct_put(part)

1349

part_stat_unlock()

**Caller**
Name	Describe
__blk_mq_end_request

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