linux-kernel - Re: [PATCH 0/7] Fix UBI Block wrt. highmem

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Date:   Fri, 11 Aug 2023 07:52:44 +0200
From:   Miquel Raynal <miquel.raynal@...tlin.com>
To:     Richard Weinberger <richard@....at>
Cc:     linux-mtd@...ts.infradead.org,
        Christoph Hellwig <hch@...radead.org>,
        Stephan Wurm <stephan.wurm@...berle.de>,
        Vignesh Raghavendra <vigneshr@...com>,
        Oliver Neukum <oliver@...kum.org>,
        Ali Akcaagac <aliakc@....de>,
        Jamie Lenehan <lenehan@...bble.org>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>,
        Ezequiel Garcia <ezequiel@...guardiasur.com.ar>,
        linux-kernel@...r.kernel.org, linux-scsi@...r.kernel.org
Subject: Re: [PATCH 0/7] Fix UBI Block wrt. highmem

Hi Richard,

richard@....at wrote on Thu, 10 Aug 2023 18:00:11 +0200:

> Patch 1 changes UBIblock to use a copy of scsi_kmap_atomic_sg()
> for sg list processing. This patch is meant for backporting to stable.
> It makes use of kmap_atomic() and a bounce buffer because MTD/UBI IO
> can sleep.
> 
> Patches 2 to 7 move scsi_kmap_atomic_sg() into lib/scatterlist.c,
> convert it to kmap_local(), convert all users to it and remove the
> bounce buffer from UBIblock again.

Both the idea and the implementation look nice, I don't feel skilled
enough for sending Reviewed-by here, but it seems okay at a first
glance.

Well done Richard :-)

Miquèl