Re: [PATCH] zsmalloc: do not use bit_spin_lock

[Matthew Wilcox]

On Sun, Dec 20, 2020 at 02:22:28AM +0200, Vitaly Wool wrote:
> zsmalloc takes bit spinlock in its _map() callback and releases it
> only in unmap() which is unsafe and leads to zswap complaining
> about scheduling in atomic context.
> 
> To fix that and to improve RT properties of zsmalloc, remove that
> bit spinlock completely and use a bit flag instead.

Isn't this just "I open coded bit spinlock to make the lockdep
warnings go away"?