linux-kernel - Re: [PATCH] zram: Use kmap_local

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Message-ID: <20231129041926.GC6525@google.com>
Date:   Wed, 29 Nov 2023 13:19:26 +0900
From:   Sergey Senozhatsky <senozhatsky@...omium.org>
To:     Minchan Kim <minchan@...nel.org>
Cc:     Sergey Senozhatsky <senozhatsky@...omium.org>,
        Andrew Morton <akpm@...ux-foundation.org>,
        linux-kernel@...r.kernel.org, linux-block@...r.kernel.org
Subject: Re: [PATCH] zram: Use kmap_local_page()

On (23/11/28 16:01), Minchan Kim wrote:
> On Tue, Nov 28, 2023 at 05:22:07PM +0900, Sergey Senozhatsky wrote:
> > Use kmap_local_page() instead of kmap_atomic() which has been
> > deprecated.
> > 
> > Signed-off-by: Sergey Senozhatsky <senozhatsky@...omium.org>
> Acked-by: Minchan Kim <minchan@...nel.org>

Thanks.

> I didn't know that the kmap_atomic was deprecated.

Me neither, figured it out recently (via checkpatch warning).
https://lore.kernel.org/all/20220813220034.806698-1-ira.weiny@intel.com/

We need to take a look at zsmalloc, the conversion can be a little more
difficult than zram's.