[CRIU] [PATCH 2/6] lock: Add completion helpers

[Cyrill Gorcunov]

For tty code we will need completions,
in other words -- waiters. I tried to
make them close to ones used in linux
kernel.

Typicall usage example

 - init completion via init_completion()

 - task 1 which waits for completion to proceed
     wait_completion()
       ... some work here ...
     complete()

 - task 2 which inform task 1 that completion can be proceeded
     wake_up_completion()
     wait_for_completion()

Signed-off-by: Cyrill Gorcunov <gorcunov at openvz.org>
---
 include/lock.h |   39 +++++++++++++++++++++++++++++++++++++++
 1 files changed, 39 insertions(+), 0 deletions(-)

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