From: Daniel Wagner dwagner@suse.de
[ Upstream commit fe506a74589326183297d5abdda02d0c76ae5a8b ]
We have to ensure that the tgtport is not going away before be have remove all the associations.
Reviewed-by: Christoph Hellwig hch@lst.de Signed-off-by: Daniel Wagner dwagner@suse.de Signed-off-by: Keith Busch kbusch@kernel.org Signed-off-by: Sasha Levin sashal@kernel.org --- drivers/nvme/target/fc.c | 31 +++++++++++++++++++++++-------- 1 file changed, 23 insertions(+), 8 deletions(-)
diff --git a/drivers/nvme/target/fc.c b/drivers/nvme/target/fc.c index 4793d1c64401..6b47279f9924 100644 --- a/drivers/nvme/target/fc.c +++ b/drivers/nvme/target/fc.c @@ -1091,13 +1091,28 @@ nvmet_fc_alloc_hostport(struct nvmet_fc_tgtport *tgtport, void *hosthandle) }
static void -nvmet_fc_delete_assoc(struct work_struct *work) +nvmet_fc_delete_assoc(struct nvmet_fc_tgt_assoc *assoc) +{ + nvmet_fc_delete_target_assoc(assoc); + nvmet_fc_tgt_a_put(assoc); +} + +static void +nvmet_fc_delete_assoc_work(struct work_struct *work) { struct nvmet_fc_tgt_assoc *assoc = container_of(work, struct nvmet_fc_tgt_assoc, del_work); + struct nvmet_fc_tgtport *tgtport = assoc->tgtport;
- nvmet_fc_delete_target_assoc(assoc); - nvmet_fc_tgt_a_put(assoc); + nvmet_fc_delete_assoc(assoc); + nvmet_fc_tgtport_put(tgtport); +} + +static void +nvmet_fc_schedule_delete_assoc(struct nvmet_fc_tgt_assoc *assoc) +{ + nvmet_fc_tgtport_get(assoc->tgtport); + queue_work(nvmet_wq, &assoc->del_work); }
static struct nvmet_fc_tgt_assoc * @@ -1128,7 +1143,7 @@ nvmet_fc_alloc_target_assoc(struct nvmet_fc_tgtport *tgtport, void *hosthandle) assoc->a_id = idx; INIT_LIST_HEAD(&assoc->a_list); kref_init(&assoc->ref); - INIT_WORK(&assoc->del_work, nvmet_fc_delete_assoc); + INIT_WORK(&assoc->del_work, nvmet_fc_delete_assoc_work); atomic_set(&assoc->terminating, 0);
while (needrandom) { @@ -1484,7 +1499,7 @@ __nvmet_fc_free_assocs(struct nvmet_fc_tgtport *tgtport) list_for_each_entry_rcu(assoc, &tgtport->assoc_list, a_list) { if (!nvmet_fc_tgt_a_get(assoc)) continue; - queue_work(nvmet_wq, &assoc->del_work); + nvmet_fc_schedule_delete_assoc(assoc); nvmet_fc_tgt_a_put(assoc); } rcu_read_unlock(); @@ -1538,7 +1553,7 @@ nvmet_fc_invalidate_host(struct nvmet_fc_target_port *target_port, continue; assoc->hostport->invalid = 1; noassoc = false; - queue_work(nvmet_wq, &assoc->del_work); + nvmet_fc_schedule_delete_assoc(assoc); nvmet_fc_tgt_a_put(assoc); } spin_unlock_irqrestore(&tgtport->lock, flags); @@ -1583,7 +1598,7 @@ nvmet_fc_delete_ctrl(struct nvmet_ctrl *ctrl) nvmet_fc_tgtport_put(tgtport);
if (found_ctrl) { - queue_work(nvmet_wq, &assoc->del_work); + nvmet_fc_schedule_delete_assoc(assoc); nvmet_fc_tgt_a_put(assoc); return; } @@ -1890,7 +1905,7 @@ nvmet_fc_ls_disconnect(struct nvmet_fc_tgtport *tgtport, nvmet_fc_xmt_ls_rsp(tgtport, oldls); }
- queue_work(nvmet_wq, &assoc->del_work); + nvmet_fc_schedule_delete_assoc(assoc); nvmet_fc_tgt_a_put(assoc);
return false;