Re: [RFC PATCH 5/6] zsmalloc: introduce handle mapping API
From: Sergey Senozhatsky
Date: Mon Jan 27 2025 - 20:13:15 EST
On (25/01/28 00:49), Yosry Ahmed wrote:
> > Preemption is disabled via zspage-s rwlock_t - zs_map_object() returns
> > with it being locked and it's being unlocked in zs_unmap_object(). Then
> > the function disables pagefaults and per-CPU local lock (protects per-CPU
> > vm-area) additionally disables preemption.
>
> Right, I meant it does not always disable page faults.
I'll add "sometimes" :)
[..]
> Anyway, if this function will be removed soon then it's not worth
> revisiting it now.
Ack.