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authorChaitanya Kulkarni <chaitanya.kulkarni@wdc.com>2018-05-11 08:38:15 +0200
committerChristoph Hellwig <hch@lst.de>2018-05-25 16:50:12 +0200
commiteb464833a2e787996474ad33dafa2c5336d4c477 (patch)
treed3a1f124fd3bb2931219016457fa997c1d090b40 /drivers/nvme
parentnvmet-fc: increase LS buffer count per fc port (diff)
downloadlinux-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>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/target/loop.c2
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),