Add nvme_mpath_get_nr_active(), which gets the number of active requests per controller for an mpath_device.
Signed-off-by: John Garry <[email protected]> --- drivers/nvme/host/multipath.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 8025cf3270cdc..62e13a484ff5e 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -1446,6 +1446,11 @@ static enum mpath_iopolicy_e nvme_mpath_get_iopolicy( return mpath_read_iopolicy(&head->subsys->mpath_iopolicy); } +static int nvme_mpath_get_nr_active(struct mpath_device *mpath_device) +{ + return atomic_read(&nvme_mpath_to_ns(mpath_device)->ctrl->nr_active); +} + __maybe_unused static const struct mpath_head_template mpdt = { .available_path = nvme_mpath_available_path, @@ -1459,4 +1464,5 @@ static const struct mpath_head_template mpdt = { .chr_uring_cmd = nvme_mpath_chr_uring_cmd, .chr_uring_cmd_iopoll = nvme_ns_chr_uring_cmd_iopoll, .get_iopolicy = nvme_mpath_get_iopolicy, + .get_nr_active = nvme_mpath_get_nr_active, }; -- 2.43.5
