On Mon, 22 May 2006 17:34:32 +1000, Nick Piggin <[email protected]> said:
>> > Oh, and __get_vm_area_node{_mask} should
>> BUG_ON(in_interrupt());
>>
>> With the patch I sent earlier, this may not be required: Since
>> __get_vm_area_node calls kmalloc, it should be taken care of in
>> kmalloc and friends. Currently cache_alloc_debugcheck_before
>> doesn't check for in_interrupt(); perhaps that is the right place
>> to add
> vmlist_lock is not irq safe. If you call it from interrupt, you
> can deadlock.
Aha. I will add BUG_ON(in_interrupt()) to __get_vm_area_node in the
next round (if there is interest in the patch).
Thanks,
Giri
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