wake_userfault

Name:wake_userfault

Proto:static __always_inline void wake_userfault(struct userfaultfd_ctx *ctx, struct userfaultfd_wake_range *range)

Type:void

Parameter:

Type	Parameter	Name
struct userfaultfd_ctx *	ctx
struct userfaultfd_wake_range *	range

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Do

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seq = ad_seqcount_begin - begin a seq-read critical section*@s: pointer to seqcount_t* Returns: count to be passed to read_seqcount_retry* read_seqcount_begin opens a read critical section of the given seqcount

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need_wakeup = waitqueue_active -- locklessly test for waiters on the queue*@wq_head: the waitqueue to test for waiters* returns true if the wait list is not empty* NOTE: this function is lockless and requires care, incorrect usage _will_ || waitqueue_active -- locklessly test for waiters on the queue*@wq_head: the waitqueue to test for waiters* returns true if the wait list is not empty* NOTE: this function is lockless and requires care, incorrect usage _will_

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When ad_seqcount_retry - end a seq-read critical section*@s: pointer to seqcount_t*@start: count, from read_seqcount_begin* Returns: 1 if retry is required, else 0* read_seqcount_retry closes a read critical section of the given seqcount cycle

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If need_wakeup Then __wake_userfault(ctx, range)

**Caller**
Name	Describe
userfaultfd_unregister
userfaultfd_wake	serfaultfd_wake may be used in combination with the* UFFDIO_*_MODE_DONTWAKE to wakeup userfaults in batches.
userfaultfd_copy
userfaultfd_zeropage

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