[PATCH 04/10] staging: erofs: fix `erofs_workgroup_{try_to_freeze, unfreeze}'

[Gao Xiang]

Hi Greg,

On 2018/11/22 19:05, Greg Kroah-Hartman wrote:
> As I said in another email, doing two things with one variable is odd as
> those are two different types of functions.

I think lockref_put_or_lock do the similar thing, it is heavily used in dcache.c, but
1) 0 is special for us, we need lock it on a < 0 value rather than 0.
2) spinlock_t is too large for us because every compressed page will have the structure,
   but the locking rarely happens.

Thanks,
Gao Xiang

> 
> greg k-h