io_fail_links

Name:Called if REQ_F_LINK is set, and we fail the head request

Proto:static void io_fail_links(struct io_kiocb *req)

Type:void

Parameter:

Type	Parameter	Name
struct io_kiocb *	req

1026

ctx = ctx

1029

spin_lock_irqsave( & completion_lock, flags)

1031

When Not list_empty - tests whether a list is empty*@head: the list to test. cycle

1032

link = list_first_entry - get the first element from a list*@ptr: the list head to take the element from.*@type: the type of the struct this is embedded in.*@member: the name of the list_head within the struct.* Note, that list is expected to be not empty.( & link_list, structio_kiocb, link_list)

1035

list_del_init - deletes entry from list and reinitialize it.*@entry: the element to delete from the list.

1036

_uring_fail_link - called before failing a linked request*@req: request, which links were cancelled*@link: cancelled link* Allows to track linked requests cancellation, to see not only that some work* was cancelled, but also which request was the reason.

1038

If flags & has linked timeout && opcode == IORING_OP_LINK_TIMEOUT Then

1040

io_link_cancel_timeout(link)

1041

Else

1042

io_cqring_fill_event(link, - ECANCELED)

1043

__io_double_put_req(link)

1045

flags &= ~has linked timeout

1048

io_commit_cqring(ctx)

1049

spin_unlock_irqrestore( & completion_lock, flags)

1050

io_cqring_ev_posted(ctx)

**Caller**
Name	Describe
io_req_find_next

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