On Thu, Oct 25, 2018 at 01:46:49PM +0000, Christopher Lameter wrote: >On Thu, 25 Oct 2018, Wei Yang wrote: > >> In current code, the following context always meets: >> >> local_irq_save/disable() >> ___slab_alloc() >> new_slab_objects() >> local_irq_restore/enable() >> >> This context ensures cpu will continue running until it finish this job >> before yield its control, which means the cpu_slab retrieved in >> new_slab_objects() is the same as passed in. > >Interrupts can be switched on in new_slab() since it goes to the page >allocator. See allocate_slab(). > >This means that the percpu slab may change. Ah, you are right, thank :-) -- Wei Yang Help you, Help me
