pipe_lock

Name:pipe_lock

Proto:void pipe_lock(struct pipe_inode_info *pipe)

Type:void

Parameter:

Type	Parameter	Name
struct pipe_inode_info *	pipe

73

We use head and tail indices that aren't masked off, except at the point of* dereference, but rather they're allowed to wrap naturally. This means there* isn't a dead spot in the buffer, but the ring has to be a power of two and* <= 2^31.

**Caller**
Name	Describe
pipe_wait	Drop the inode semaphore and wait for a pipe event, atomically
splice_from_pipe	splice_from_pipe - splice data from a pipe to a file@pipe: pipe to splice from@out: file to splice to@ppos: position in @out@len: how many bytes to splice@flags: splice modifier flags@actor: handler that splices the data* Description:
iter_file_splice_write	r_file_splice_write - splice data from a pipe to a file@pipe: pipe info@out: file to write to@ppos: position in @out@len: number of bytes to splice@flags: splice modifier flags Description:* Will either move or copy pages (determined by @flags
do_splice	Determine where to splice to/from.
vmsplice_to_user	For lack of a better implementation, implement vmsplice() to userspace* as a simple copy of the pipes pages to the user iov.
vmsplice_to_pipe	vmsplice splices a user address range into a pipe. It can be thought of* as splice-from-memory, where the regular splice is splice-from-file (or* to file). In both cases the output is a pipe, naturally.
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.
wait_for_dump_helpers

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