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Add a who-is-who about some locks and list heads in raw1394's struct
definitions.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
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An already existing wait queue replaces raw1394's complete_sem which was
maintained in parallel to the wait queue. The role of the semaphore's
counter is taken over by a direct check of what was really counted: The
presence of items in the list of completed requests.
Notes:
- raw1394_release() sleeps uninterruptibly until all requests were
completed. This is the same behaviour as before the patch.
- The macros wait_event and wait_event_interruptible are called with a
condition argument which has a side effect, i.e. manipulation of the
requests list. This side effect happens only if the condition is
true. The patch relies on the fact that wait_event[_interruptible]
does not evaluate the condition again after it became true.
- The diffstat looks unfavorable with respect to added lines of code.
However 19 of them are comments, and some are due to separation of
existing code blocks into two small helper functions.
Signed-off-by: Stefan Richter <stefanr@s5r6.in-berlin.de>
Signed-off-by: Ben Collins <bcollins@ubuntu.com>
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Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.
Let it rip!
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