dio_bio_end_aio

Name:Asynchronous IO callback.

Proto:static void dio_bio_end_aio(struct bio *bio)

Type:void

Parameter:

Type	Parameter	Name
struct bio *	bio

332

dio = bi_private

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bool defer_completion = false

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dio_bio_complete(dio, bio)

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spin_lock_irqsave( & protects BIO fields below , flags)

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remaining = --direct_io_worker() and bios

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If remaining == 1 && waiting task (NULL if none) Then wake_up_process - Wake up a specific process*@p: The process to be woken up.* Attempt to wake up the nominated process and move it to the set of runnable* processes.* Return: 1 if the process was woken up, 0 if it was already running.

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spin_unlock_irqrestore( & protects BIO fields below , flags)

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If remaining == 0 Then

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If IO result Then defer_completion = defer AIO completion to workqueue? || op == REQ_OP_WRITE && nrpages

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If defer_completion Then

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INIT_WORK( & deferred AIO completion , dio_aio_complete_work)

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queue_work - queue work on a workqueue*@wq: workqueue to use*@work: work to queue* Returns %false if @work was already on a queue, %true otherwise.* We queue the work to the CPU on which it was submitted, but if the CPU dies

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Else

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dio_complete() - called when all DIO BIO I/O has been completed* This drops i_dio_count, lets interested parties know that a DIO operation* has completed, and calculates the resulting return code for the operation

**Caller**
Name	Describe
dio_end_io	dio_end_io - handle the end io action for the given bio@bio: The direct io bio thats being completed This is meant to be called by any filesystem that uses their own dio_submit_t* so that the DIO specific endio actions are dealt with after the filesystem

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