Sagi Grimberg d4d957b53d nvme-multipath: support io stats on the mpath device ... Our mpath stack device is just a shim that selects a bottom namespace and submits the bio to it without any fancy splitting. This also means that we don't clone the bio or have any context to the bio beyond submission. However it really sucks that we don't see the mpath device io stats. Given that the mpath device can't do that without adding some context to it, we let the bottom device do it on its behalf (somewhat similar to the approach taken in nvme_trace_bio_complete). When the IO starts, we account the request for multipath IO stats using REQ_NVME_MPATH_IO_STATS nvme_request flag to avoid queue io stats disable in the middle of the request. Signed-off-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Keith Busch <kbusch@kernel.org>		2022-12-06 09:17:01 +01:00
..
common	treewide: use get_random_u32() when possible	2022-10-11 17:42:58 -06:00
host	nvme-multipath: support io stats on the mpath device	2022-12-06 09:17:01 +01:00
target	nvme: introduce nvme_start_request	2022-12-06 09:16:57 +01:00
Kconfig	nvme: implement In-Band authentication	2022-08-02 17:14:49 -06:00
Makefile	nvme: implement In-Band authentication	2022-08-02 17:14:49 -06:00