Re: [PATCH] mm/zblock: use vmalloc for page allocations

[Christoph Hellwig]

On Thu, May 08, 2025 at 02:58:14PM +0900, Sergey Senozhatsky wrote:
> Oh, I didn't realize that zram was the only swap_slot_free_notify
> user.  zram already handles REQ_OP_DISCARD/REQ_OP_WRITE_ZEROES so
> I guess only swap-cluster needs some work.  Are there any
> blockers/complications on the swap-cluster side?

I think the reason it was added it was so that the discard can be
done non-blocking with a spinlock held.  Which seems a bit sketch
when calling into a driver anyway..