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SubjectRe: [PATCH] might_sleep() improvements


Mitchell Blank Jr wrote:

>Andrew - I thought this might be appropriate for -mm kernels.
>
>This patch makes the following improvements to might_sleep():
>
> o Add a "might_sleep_if()" macro for when we might sleep only if some
> condition is met. I think this is a bit better than the currently used
> "if (cond) might_sleep();" since it's clearer that the test won't be
> compiled in if spinlock sleep debugging is turned off. (Obviously
> gcc is smart enough to omit simple conditions in that case) It also
> looks cleaner, IMO. Think of it as analogous to BUG()/BUG_ON().
>

I think these should be pushed down to where the sleeping
actually happens if possible.


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