Re: [PATCH] mm: create a separate slab for page->ptl allocation
On Wed, Nov 06, 2013 at 10:34:03AM +0000, Will Deacon wrote: > FWIW: if the architecture selects ARCH_USE_CMPXCHG_LOCKREF, then a spinlock_t > is 32-bit (assuming that unsigned int is also 32-bit).
Egads, talk about fragile. That thing relies on someone actually keeping lib/Kconfig up-to-date.