pipe_wait

Name:Drop the inode semaphore and wait for a pipe event, atomically

Proto:void pipe_wait(struct pipe_inode_info *pipe)

Type:void

Parameter:

Type	Parameter	Name
struct pipe_inode_info *	pipe

111

DEFINE_WAIT(wait)

117

Note: we use "set_current_state()" _after_ the wait-queue add,* because we need a memory barrier there on SMP, so that any* wake-function that tests for the wait-queue being active* will be guaranteed to see waitqueue addition _or_ subsequent

118

pipe_unlock(pipe)

119

120

sh_wait - clean up after waiting in a queue*@wq_head: waitqueue waited on*@wq_entry: wait descriptor* Sets current thread back to running state and removes* the wait descriptor from the given waitqueue if still* queued.

121

pipe_lock(pipe)

**Caller**
Name	Describe
wait_for_partner
splice_from_pipe_next	splice_from_pipe_next - wait for some data to splice from@pipe: pipe to splice from@sd: information about the splice operation* Description:* This function will wait for some data and return a positive* value (one) if pipe buffers are available
wait_for_space
ipipe_prep	Make sure there's data to read. Wait for input if we can, otherwise* return an appropriate error.
opipe_prep	Make sure there's writeable room. Wait for room if we can, otherwise* return an appropriate error.

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