linux-kernel - Re: [PATCHv4 4/9] zram: Introduce recompress sysfs knob

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Message-ID: <Y2VQKwizB5MY0tKg@google.com>
Date:   Fri, 4 Nov 2022 10:47:23 -0700
From:   Minchan Kim <minchan@...nel.org>
To:     Sergey Senozhatsky <senozhatsky@...omium.org>
Cc:     Andrew Morton <akpm@...ux-foundation.org>,
        Nitin Gupta <ngupta@...are.org>, linux-kernel@...r.kernel.org,
        linux-mm@...ck.org
Subject: Re: [PATCHv4 4/9] zram: Introduce recompress sysfs knob

On Fri, Nov 04, 2022 at 04:53:13PM +0900, Sergey Senozhatsky wrote:
> On (22/11/03 10:00), Minchan Kim wrote:
> > zram->table[index].flags
> > 
> > If we squeeze the algorithm index, we could work like this
> > without ZRAM_RECOMP_SKIP.
> 
> Something like this?
> 
> Allocate two ->flags bits for priority and one bit for RECOMP_SKIP.
> Two priority bits let us to have 3 alternative algorithms (01 10 11)
> plus one default (00). So 4 in total.

Looks good!