block: nr_phys_segments needs to be zero for REQ_OP_WRITE_ZEROES
Fix a regression introduced when removing bi_phys_segments for Write Zeroes
requests, which need to have a segment count of zero, as they don't have a
payload.
Fixes: 14ccb66b3f
("block: remove the bi_phys_segments field in struct bio")
Reported-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Christoph Hellwig <hch@lst.de>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
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@ -105,7 +105,7 @@ static struct bio *blk_bio_discard_split(struct request_queue *q,
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static struct bio *blk_bio_write_zeroes_split(struct request_queue *q,
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struct bio *bio, struct bio_set *bs, unsigned *nsegs)
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{
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*nsegs = 1;
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*nsegs = 0;
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if (!q->limits.max_write_zeroes_sectors)
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return NULL;
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