6.14-stable review patch. If anyone has any objections, please let me know.
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From: Johannes Thumshirn johannes.thumshirn@wdc.com
[ Upstream commit db492e24f9b05547ba12b4783f09c9d943cf42fe ]
In case of a ZONE APPEND write, regardless of native ZONE APPEND or the emulation layer in the zone write plugging code, the sector the data got written to by the device needs to be updated in the bio.
At the moment, this is done for every native ZONE APPEND write and every request that is flagged with 'BIO_ZONE_WRITE_PLUGGING'. But thus superfluously updates the sector for regular writes to a zoned block device.
Check if a bio is a native ZONE APPEND write or if the bio is flagged as 'BIO_EMULATES_ZONE_APPEND', meaning the block layer's zone write plugging code handles the ZONE APPEND and translates it into a regular write and back. Only if one of these two criterion is met, update the sector in the bio upon completion.
Signed-off-by: Johannes Thumshirn johannes.thumshirn@wdc.com Reviewed-by: Christoph Hellwig hch@lst.de Link: https://lore.kernel.org/r/dea089581cb6b777c1cd1500b38ac0b61df4b2d1.174653074... Signed-off-by: Jens Axboe axboe@kernel.dk Signed-off-by: Sasha Levin sashal@kernel.org --- block/blk.h | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/block/blk.h b/block/blk.h index 9dcc92c7f2b50..c14f415de5228 100644 --- a/block/blk.h +++ b/block/blk.h @@ -480,7 +480,8 @@ static inline void blk_zone_update_request_bio(struct request *rq, * the original BIO sector so that blk_zone_write_plug_bio_endio() can * lookup the zone write plug. */ - if (req_op(rq) == REQ_OP_ZONE_APPEND || bio_zone_write_plugging(bio)) + if (req_op(rq) == REQ_OP_ZONE_APPEND || + bio_flagged(bio, BIO_EMULATES_ZONE_APPEND)) bio->bi_iter.bi_sector = rq->__sector; } void blk_zone_write_plug_bio_endio(struct bio *bio);