[PATCH v3 02/10] nvme-multipath: add nvme_mpath_available_path()
John Garry <[email protected]>
| Newsgroups | dev.linux.lists.dm-devel,org.infradead.lists.linux-nvme,org.kernel.vger.linux-kernel,org.kernel.vger.linux-scsi |
|---|---|
| Message-ID | <[email protected]> |
This is for mpath_head_template.available_path callback. Currently the same functionality is in nvme_available_path(). Signed-off-by: John Garry <[email protected]> --- drivers/nvme/host/multipath.c | 20 ++++++++++++++++++++ 1 file changed, 20 insertions(+) diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c index 14947736744a5..14c4370f7303f 100644 --- a/drivers/nvme/host/multipath.c +++ b/drivers/nvme/host/multipath.c @@ -505,6 +505,25 @@ static bool nvme_available_path(struct nvme_ns_head *head) return nvme_mpath_queue_if_no_path(head); } +static bool nvme_mpath_available_path(struct mpath_device *mpath_device) +{ + struct nvme_ns *ns = nvme_mpath_to_ns(mpath_device); + + if (test_bit(NVME_CTRL_FAILFAST_EXPIRED, &ns->ctrl->flags)) + return false; + + switch (nvme_ctrl_state(ns->ctrl)) { + case NVME_CTRL_LIVE: + case NVME_CTRL_RESETTING: + case NVME_CTRL_CONNECTING: + return true; + default: + break; + } + + return false; +} + static void nvme_ns_head_submit_bio(struct bio *bio) { struct nvme_ns_head *head = bio->bi_bdev->bd_disk->private_data; @@ -1499,4 +1518,5 @@ void nvme_mpath_uninit(struct nvme_ctrl *ctrl) __maybe_unused static const struct mpath_head_template mpdt = { + .available_path = nvme_mpath_available_path, }; -- 2.43.7