Commit d665e12a authored Jul 03, 2019 by Christoph Hellwig Committed by Jens Axboe Jul 03, 2019

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: 14ccb66b ("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>

parent 970d168d

block/blk-merge.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -105,7 +105,7 @@ static struct bio blk_bio_discard_split(struct request_queue q,
		static struct bio blk_bio_write_zeroes_split(struct request_queue q,
		struct bio bio, struct bio_set bs, unsigned *nsegs)
		{
		*nsegs = 1;
		*nsegs = 0;

		if (!q->limits.max_write_zeroes_sectors)
		return NULL;

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