Re: [PATCHv10 4/9] block: allow ability to limit partition write hints

[Bart Van Assche <bvanassche@acm.org>]

On 10/30/24 1:37 PM, Keith Busch wrote:
> But if by "not atomic", if you're just saying we need a barrier on the
> bitmap_copy, like smp_mb__after_atomic(), then yeah, I see that's
> probably appropriate here.

smp_mb__after_atomic() follows atomic operations. bitmap_copy() does not
use any kind of atomic operation.

I'm wondering whether introducing a variant of bitmap_copy() that uses
WRITE_ONCE() or smp_store_release() would be appropriate.

Thanks,

Bart.