Messages in this thread | | | Date | Sat, 9 Feb 2002 15:14:15 +0100 | From | Gerd Knorr <> | Subject | Re: [PATCH] __free_pages_ok oops |
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> and Gerd Knorr's report (extracts below) implies that his bttv driver > was calling unmap_kiobuf at interrupt time. Is that right, Gerd?
Yes.
> encourage him to unmap at interrupt time). Now maybe Gerd's code is > wrong anyway: a quick look suggests it may also vfree there, which > would be wrong at interrupt time.
vfree() isn't allowed? I know vmalloc() isn't because it might sleep while waiting for the VM getting a few free pages. Why vfree isn't allowed? I can't see why freeing ressources is a problem ...
Is somewhere a list of things which are allowed from irq context and which are not?
Gerd
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