For controllers that can handle arbitrarily sized bios (e.g advanced
RDMA ctrls) we can allow the block layer to pass us gaps by skip
setting the queue virt_boundary.
Signed-off-by: Max Gurtovoy <maxg@xxxxxxxxxxxx>
Reviewed-by: Keith Busch <keith.busch@xxxxxxxxx>
Reviewed-by: Christoph Hellwig <hch@xxxxxx>
Reviewed-by: Leon Romanovsky <leon@xxxxxxxxxx>
---
drivers/nvme/host/core.c | 5 ++++-
drivers/nvme/host/nvme.h | 1 +
2 files changed, 5 insertions(+), 1 deletions(-)
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 9583a5f..72bc70e 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -1252,7 +1252,10 @@ static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
}
if (ctrl->quirks & NVME_QUIRK_STRIPE_SIZE)
blk_queue_chunk_sectors(q, ctrl->max_hw_sectors);
- blk_queue_virt_boundary(q, ctrl->page_size - 1);
+
+ if (!ctrl->sg_gaps_support)
+ blk_queue_virt_boundary(q, ctrl->page_size - 1);
+
if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
vwc = true;
blk_queue_write_cache(q, vwc, vwc);
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 2aa20e3..ccb895a 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -162,6 +162,7 @@ struct nvme_ctrl {
struct work_struct scan_work;
struct work_struct async_event_work;
struct delayed_work ka_work;
+ bool sg_gaps_support;
/* Power saving configuration */
u64 ps_max_latency_us;
--
1.7.1
--
To unsubscribe from this list: send the line "unsubscribe linux-rdma" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
