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Date:   Thu, 10 Aug 2023 18:15:36 +0200 (CEST)
From:   Richard Weinberger <richard@nod.at>
To:     Christoph Hellwig <hch@infradead.org>
Cc:     linux-mtd <linux-mtd@lists.infradead.org>,
        Stephan Wurm <stephan.wurm@a-eberle.de>,
        stable <stable@vger.kernel.org>,
        Miquel Raynal <miquel.raynal@bootlin.com>,
        Vignesh Raghavendra <vigneshr@ti.com>,
        Oliver Neukum <oliver@neukum.org>,
        Ali Akcaagac <aliakc@web.de>,
        Jamie Lenehan <lenehan@twibble.org>,
        James Bottomley <jejb@linux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@oracle.com>,
        Ezequiel Garcia <ezequiel@vanguardiasur.com.ar>,
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Subject: Re: [PATCH 1/7] ubi: block: Refactor sg list processing for highmem
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----- Ursprüngliche Mail -----
> Von: "Christoph Hellwig" <hch@infradead.org>
>> Refactor ubi_eba_read_leb_sg() to use kmap_atomic() for sg list
>> access.
>> Since kmap_atomic() disables preempt a bounce buffer is needed.
>> kmap_local_page() is not used to allow easy backporting of this patch
>> to older kernels.
>> 
>> The followup patches in this series will switch to kmap_sg()
>> and we can remove our own helper and the bounce buffer.
> 
> Please just use kmap_local and avoid the bounce buffering.

Patch 6 does this.

Thanks,
//richard