Re: [PATCH] Document kfree and vfree NULL usage (resend)

[Manfred Spraul]

Kernel Stuff wrote:

> The attached patch changes the vfree() documentation to correct "May not be 
> called in interrupt context" to "Must not be called in interrupt context". 
> Latter is compliant to  RFC2119 and matches the absolute requirement for  
> vfree.
>
> Is not the same requirement true for vmalloc() - or is it ok to call vmalloc() 
> in interrupt?
>
>  
No, it's not ok.
But that's not something worth mentioning: only a few functions are 
permitted from interrupt context. The special thing about vfree is the 
asymmetry: kfree from irq context is ok, vfree is forbidden. That's why 
it's documented.

--
   Manfred
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