There's another wait/synchronize primitive that I found at one point, I think the block layer used it, which involved a bit less inlined code and didn't necessarily require everything to be interruptible. I lost track of it though.
Found it again, also in <linux/wait.h>:
prepare_to_wait(..., TASK_{UN,}INTERRUPTIBLE);
... do stuff
finish_wait(...);The "stuff" can include schedule_timeout() and so on.
- Dave
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