Re: [PATCH] block: Clear BIO_EMULATES_ZONE_APPEND flag on BIO completion

[Hannes Reinecke <hare@suse.de>]

On 6/11/25 02:59, Damien Le Moal wrote:
> When blk_zone_write_plug_bio_endio() is called for a regular write BIO
> used to emulate a zone append operation, that is, a BIO flagged with
> BIO_EMULATES_ZONE_APPEND, the BIO operation code is restored to the
> original REQ_OP_ZONE_APPEND but the BIO_EMULATES_ZONE_APPEND flag is not
> cleared. Clear it to fully return the BIO to its orginal definition.
> 
> Fixes: 9b1ce7f0c6f8 ("block: Implement zone append emulation")
> Cc: stable@vger.kernel.org
> Signed-off-by: Damien Le Moal <dlemoal@kernel.org>
> ---
>   block/blk-zoned.c | 1 +
>   1 file changed, 1 insertion(+)
> 
> diff --git a/block/blk-zoned.c b/block/blk-zoned.c
> index dfcef04ea8b4..55e64ca869d7 100644
> --- a/block/blk-zoned.c
> +++ b/block/blk-zoned.c
> @@ -1254,6 +1254,7 @@ void blk_zone_write_plug_bio_endio(struct bio *bio)
>   	if (bio_flagged(bio, BIO_EMULATES_ZONE_APPEND)) {
>   		bio->bi_opf &= ~REQ_OP_MASK;
>   		bio->bi_opf |= REQ_OP_ZONE_APPEND;
> +		bio_clear_flag(bio, BIO_EMULATES_ZONE_APPEND);
>   	}
>   
>   	/*
Reviewed-by: Hannes Reinecke <hare@suse.de>

Cheers,

Hannes
-- 
Dr. Hannes Reinecke                  Kernel Storage Architect
hare@suse.de                                +49 911 74053 688
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