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| author | Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com> | 2018-05-11 08:38:15 +0200 |
|---|---|---|
| committer | Christoph Hellwig <hch@lst.de> | 2018-05-25 16:50:12 +0200 |
| commit | eb464833a2e787996474ad33dafa2c5336d4c477 (patch) | |
| tree | d3a1f124fd3bb2931219016457fa997c1d090b40 | |
| parent | nvmet-fc: increase LS buffer count per fc port (diff) | |
| download | linux-eb464833a2e787996474ad33dafa2c5336d4c477.tar.xz linux-eb464833a2e787996474ad33dafa2c5336d4c477.zip | |
nvmet-loop: use nr_phys_segments when map rq to sgl
Use blk_rq_nr_phys_segments() instead of blk_rq_payload_bytes() to check
if a command contains data to me mapped. This fixes the case where
a struct requests contains LBAs, but no data will actually be send,
e.g. the pending Write Zeroes support.
Signed-off-by: Chaitanya Kulkarni <chaitanya.kulkarni@wdc.com>
Signed-off-by: Christoph Hellwig <hch@lst.de>
| -rw-r--r-- | drivers/nvme/target/loop.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/nvme/target/loop.c b/drivers/nvme/target/loop.c index 27a8561c0cb9..4284cefe6d32 100644 --- a/drivers/nvme/target/loop.c +++ b/drivers/nvme/target/loop.c @@ -174,7 +174,7 @@ static blk_status_t nvme_loop_queue_rq(struct blk_mq_hw_ctx *hctx, &queue->nvme_sq, &nvme_loop_ops)) return BLK_STS_OK; - if (blk_rq_payload_bytes(req)) { + if (blk_rq_nr_phys_segments(req)) { iod->sg_table.sgl = iod->first_sgl; if (sg_alloc_table_chained(&iod->sg_table, blk_rq_nr_phys_segments(req), |