dio_bio_reap

Name:A really large O_DIRECT read or write can generate a lot of BIOs. So* to keep the memory consumption sane we periodically reap any completed BIOs* during the BIO generation phase.* This also helps to limit the peak amount of pinned userspace memory.

Proto:static inline int dio_bio_reap(struct dio *dio, struct dio_submit *sdio)

Type:int

Parameter:

Type	Parameter	Name
struct dio *	dio
struct dio_submit *	sdio

566

ret = 0

568

If ate limit reaping ++ >= 64 Then

569

When singly linked via bi_private cycle

574

spin_lock_irqsave( & protects BIO fields below , flags)

575

bio = singly linked via bi_private

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singly linked via bi_private = bi_private

577

spin_unlock_irqrestore( & protects BIO fields below , flags)

578

ret2 = blk_status_to_errno(dio_bio_complete(dio, bio))

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If ret == 0 Then ret = ret2

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ate limit reaping = 0

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Return ret

**Caller**
Name	Describe
dio_new_bio	There is no bio. Make one now.

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