linux-kernel - Re: scheduling while atomic in z3fold

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Date:   Mon, 30 Nov 2020 15:28:05 +0100
From:   Sebastian Andrzej Siewior <bigeasy@...utronix.de>
To:     Oleksandr Natalenko <oleksandr@...alenko.name>
Cc:     Mike Galbraith <efault@....de>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org, Andrew Morton <akpm@...ux-foundation.org>,
        Steven Rostedt <rostedt@...dmis.org>,
        Thomas Gleixner <tglx@...utronix.de>,
        linux-rt-users@...r.kernel.org
Subject: Re: scheduling while atomic in z3fold

On 2020-11-30 14:53:22 [+0100], Oleksandr Natalenko wrote:
> > diff --git a/mm/zswap.c b/mm/zswap.c
> > index 78a20f7b00f2c..b24f761b9241c 100644
> > --- a/mm/zswap.c
> > +++ b/mm/zswap.c
> > @@ -394,7 +394,9 @@ struct zswap_comp {
> >  	u8 *dstmem;
> >  };
> >  
> > -static DEFINE_PER_CPU(struct zswap_comp, zswap_comp);
> > +static DEFINE_PER_CPU(struct zswap_comp, zswap_comp) = {
> > +	.lock = INIT_LOCAL_LOCK(lock),
> 
> Is it a residue?

It as been added on purpose.

Sebastian