On 2020-04-16 14:43:48 [-0400], Joel Fernandes wrote: > > Fair enough! IIRC, get_page() uses non-raw spinlocks, so... > > Oh, I see Paul made the same suggestion I did for raw spinlocks. > > migrate_disable() is fine, but note that in the later code we will not be > sleeping even during the get_page(), so I don't see a problem with raw > spinlock... did I miss something? The buddy allocator, which get_page() is using, is using spinlock_t which is a sleeping lock. You can't have memory allocations within a raw_spinlock_t section even with GFP_ATOMIC on PREEMPT_RT. > thanks, > > - Joel Sebastian
