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-rw-r--r--drivers/nvme/host/core.c15
-rw-r--r--drivers/nvme/host/fabrics.c2
-rw-r--r--drivers/nvme/host/fabrics.h3
-rw-r--r--drivers/nvme/host/fc.c1
-rw-r--r--drivers/nvme/host/multipath.c18
-rw-r--r--drivers/nvme/host/nvme.h6
-rw-r--r--drivers/nvme/host/rdma.c10
-rw-r--r--drivers/nvme/host/tcp.c15
8 files changed, 55 insertions, 15 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index 1d7c7afb1348..c16bfdff2953 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -366,6 +366,16 @@ bool nvme_change_ctrl_state(struct nvme_ctrl *ctrl,
break;
}
break;
+ case NVME_CTRL_DELETING_NOIO:
+ switch (old_state) {
+ case NVME_CTRL_DELETING:
+ case NVME_CTRL_DEAD:
+ changed = true;
+ /* FALLTHRU */
+ default:
+ break;
+ }
+ break;
case NVME_CTRL_DEAD:
switch (old_state) {
case NVME_CTRL_DELETING:
@@ -403,6 +413,7 @@ static bool nvme_state_terminal(struct nvme_ctrl *ctrl)
case NVME_CTRL_CONNECTING:
return false;
case NVME_CTRL_DELETING:
+ case NVME_CTRL_DELETING_NOIO:
case NVME_CTRL_DEAD:
return true;
default:
@@ -3476,6 +3487,7 @@ static ssize_t nvme_sysfs_show_state(struct device *dev,
[NVME_CTRL_RESETTING] = "resetting",
[NVME_CTRL_CONNECTING] = "connecting",
[NVME_CTRL_DELETING] = "deleting",
+ [NVME_CTRL_DELETING_NOIO]= "deleting (no IO)",
[NVME_CTRL_DEAD] = "dead",
};
@@ -4112,6 +4124,9 @@ void nvme_remove_namespaces(struct nvme_ctrl *ctrl)
if (ctrl->state == NVME_CTRL_DEAD)
nvme_kill_queues(ctrl);
+ /* this is a no-op when called from the controller reset handler */
+ nvme_change_ctrl_state(ctrl, NVME_CTRL_DELETING_NOIO);
+
down_write(&ctrl->namespaces_rwsem);
list_splice_init(&ctrl->namespaces, &ns_list);
up_write(&ctrl->namespaces_rwsem);
diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c
index 2a6c8190eeb7..4ec4829d6233 100644
--- a/drivers/nvme/host/fabrics.c
+++ b/drivers/nvme/host/fabrics.c
@@ -547,7 +547,7 @@ static struct nvmf_transport_ops *nvmf_lookup_transport(
blk_status_t nvmf_fail_nonready_command(struct nvme_ctrl *ctrl,
struct request *rq)
{
- if (ctrl->state != NVME_CTRL_DELETING &&
+ if (ctrl->state != NVME_CTRL_DELETING_NOIO &&
ctrl->state != NVME_CTRL_DEAD &&
!blk_noretry_request(rq) && !(rq->cmd_flags & REQ_NVME_MPATH))
return BLK_STS_RESOURCE;
diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index a0ec40ab62ee..a9c1e3b4585e 100644
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -182,7 +182,8 @@ bool nvmf_ip_options_match(struct nvme_ctrl *ctrl,
static inline bool nvmf_check_ready(struct nvme_ctrl *ctrl, struct request *rq,
bool queue_live)
{
- if (likely(ctrl->state == NVME_CTRL_LIVE))
+ if (likely(ctrl->state == NVME_CTRL_LIVE ||
+ ctrl->state == NVME_CTRL_DELETING))
return true;
return __nvmf_check_ready(ctrl, rq, queue_live);
}
diff --git a/drivers/nvme/host/fc.c b/drivers/nvme/host/fc.c
index 6aa30bb5a762..b27c54dc6683 100644
--- a/drivers/nvme/host/fc.c
+++ b/drivers/nvme/host/fc.c
@@ -826,6 +826,7 @@ nvme_fc_ctrl_connectivity_loss(struct nvme_fc_ctrl *ctrl)
break;
case NVME_CTRL_DELETING:
+ case NVME_CTRL_DELETING_NOIO:
default:
/* no action to take - let it delete */
break;
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 74bad4e3d377..900b35d47ec7 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -167,9 +167,18 @@ void nvme_mpath_clear_ctrl_paths(struct nvme_ctrl *ctrl)
static bool nvme_path_is_disabled(struct nvme_ns *ns)
{
- return ns->ctrl->state != NVME_CTRL_LIVE ||
- test_bit(NVME_NS_ANA_PENDING, &ns->flags) ||
- test_bit(NVME_NS_REMOVING, &ns->flags);
+ /*
+ * We don't treat NVME_CTRL_DELETING as a disabled path as I/O should
+ * still be able to complete assuming that the controller is connected.
+ * Otherwise it will fail immediately and return to the requeue list.
+ */
+ if (ns->ctrl->state != NVME_CTRL_LIVE &&
+ ns->ctrl->state != NVME_CTRL_DELETING)
+ return true;
+ if (test_bit(NVME_NS_ANA_PENDING, &ns->flags) ||
+ test_bit(NVME_NS_REMOVING, &ns->flags))
+ return true;
+ return false;
}
static struct nvme_ns *__nvme_find_path(struct nvme_ns_head *head, int node)
@@ -563,6 +572,9 @@ static void nvme_ana_work(struct work_struct *work)
{
struct nvme_ctrl *ctrl = container_of(work, struct nvme_ctrl, ana_work);
+ if (ctrl->state != NVME_CTRL_LIVE)
+ return;
+
nvme_read_ana_log(ctrl);
}
diff --git a/drivers/nvme/host/nvme.h b/drivers/nvme/host/nvme.h
index 92629758b77c..1609267a1f0e 100644
--- a/drivers/nvme/host/nvme.h
+++ b/drivers/nvme/host/nvme.h
@@ -190,6 +190,11 @@ static inline u16 nvme_req_qid(struct request *req)
* @NVME_CTRL_CONNECTING: Controller is disconnected, now connecting the
* transport
* @NVME_CTRL_DELETING: Controller is deleting (or scheduled deletion)
+ * @NVME_CTRL_DELETING_NOIO: Controller is deleting and I/O is not
+ * disabled/failed immediately. This state comes
+ * after all async event processing took place and
+ * before ns removal and the controller deletion
+ * progress
* @NVME_CTRL_DEAD: Controller is non-present/unresponsive during
* shutdown or removal. In this case we forcibly
* kill all inflight I/O as they have no chance to
@@ -201,6 +206,7 @@ enum nvme_ctrl_state {
NVME_CTRL_RESETTING,
NVME_CTRL_CONNECTING,
NVME_CTRL_DELETING,
+ NVME_CTRL_DELETING_NOIO,
NVME_CTRL_DEAD,
};
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index 467da08db309..5c3848974ccb 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -1102,11 +1102,12 @@ static int nvme_rdma_setup_ctrl(struct nvme_rdma_ctrl *ctrl, bool new)
changed = nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_LIVE);
if (!changed) {
/*
- * state change failure is ok if we're in DELETING state,
+ * state change failure is ok if we started ctrl delete,
* unless we're during creation of a new controller to
* avoid races with teardown flow.
*/
- WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING);
+ WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING &&
+ ctrl->ctrl.state != NVME_CTRL_DELETING_NOIO);
WARN_ON_ONCE(new);
ret = -EINVAL;
goto destroy_io;
@@ -1159,8 +1160,9 @@ static void nvme_rdma_error_recovery_work(struct work_struct *work)
blk_mq_unquiesce_queue(ctrl->ctrl.admin_q);
if (!nvme_change_ctrl_state(&ctrl->ctrl, NVME_CTRL_CONNECTING)) {
- /* state change failure is ok if we're in DELETING state */
- WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING);
+ /* state change failure is ok if we started ctrl delete */
+ WARN_ON_ONCE(ctrl->ctrl.state != NVME_CTRL_DELETING &&
+ ctrl->ctrl.state != NVME_CTRL_DELETING_NOIO);
return;
}
diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c
index b2e73e19ef01..8c8fb65ca928 100644
--- a/drivers/nvme/host/tcp.c
+++ b/drivers/nvme/host/tcp.c
@@ -1950,11 +1950,12 @@ static int nvme_tcp_setup_ctrl(struct nvme_ctrl *ctrl, bool new)
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_LIVE)) {
/*
- * state change failure is ok if we're in DELETING state,
+ * state change failure is ok if we started ctrl delete,
* unless we're during creation of a new controller to
* avoid races with teardown flow.
*/
- WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING);
+ WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
+ ctrl->state != NVME_CTRL_DELETING_NOIO);
WARN_ON_ONCE(new);
ret = -EINVAL;
goto destroy_io;
@@ -2010,8 +2011,9 @@ static void nvme_tcp_error_recovery_work(struct work_struct *work)
blk_mq_unquiesce_queue(ctrl->admin_q);
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_CONNECTING)) {
- /* state change failure is ok if we're in DELETING state */
- WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING);
+ /* state change failure is ok if we started ctrl delete */
+ WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
+ ctrl->state != NVME_CTRL_DELETING_NOIO);
return;
}
@@ -2046,8 +2048,9 @@ static void nvme_reset_ctrl_work(struct work_struct *work)
nvme_tcp_teardown_ctrl(ctrl, false);
if (!nvme_change_ctrl_state(ctrl, NVME_CTRL_CONNECTING)) {
- /* state change failure is ok if we're in DELETING state */
- WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING);
+ /* state change failure is ok if we started ctrl delete */
+ WARN_ON_ONCE(ctrl->state != NVME_CTRL_DELETING &&
+ ctrl->state != NVME_CTRL_DELETING_NOIO);
return;
}
generated by cgit v1.2.3 (git 2.39.0) at 2024-09-16 09:04:37 +0300