linux-kernel - Re: + zram-add-size-class-equals-check-into-recompression.patch added to mm-unstable branch

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Message-ID: <Y1s+8ohGRlutI7aI@google.com>
Date:   Fri, 28 Oct 2022 11:31:14 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Andrew Morton <akpm@...ux-foundation.org>
Cc:     mm-commits@...r.kernel.org, ngupta@...are.org, minchan@...nel.org,
        avromanov@...rdevices.ru, linux-kernel@...r.kernel.org
Subject: Re: + zram-add-size-class-equals-check-into-recompression.patch
 added to mm-unstable branch

On (22/10/27 13:03), Andrew Morton wrote:
> The patch titled
>      Subject: zram: add size class equals check into recompression
> has been added to the -mm mm-unstable branch.  Its filename is
>      zram-add-size-class-equals-check-into-recompression.patch
> 
> This patch will shortly appear at
>      https://git.kernel.org/pub/scm/linux/kernel/git/akpm/25-new.git/tree/patches/zram-add-size-class-equals-check-into-recompression.patch

[..]

> Patch series "zsmalloc/zram: configurable zspage size", v3.
> 
> It makes no sense for us to recompress the object if it will be in the
> same size class.  We anyway don't get any memory gain.  But, at the same
> time, we get a CPU time overhead when inserting this object into zspage
> and decompressing it afterwards.
> 
> Link: https://lkml.kernel.org/r/20221027042651.234524-1-senozhatsky@chromium.org
> Link: https://lkml.kernel.org/r/20221027042651.234524-2-senozhatsky@chromium.org
> Signed-off-by: Alexey Romanov <avromanov@...rdevices.ru>
> Cc: Minchan Kim <minchan@...nel.org>
> Cc: Nitin Gupta <ngupta@...are.org>
> Signed-off-by: Andrew Morton <akpm@...ux-foundation.org>

Reviewed-by: Sergey Senozhatsky <senozhatsky@...omium.org>