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authorLinus Torvalds2022-12-02 16:27:15 -0800
committerLinus Torvalds2022-12-02 16:27:15 -0800
commit97ee9d1c16963375eefdf964c429897d27e28956 (patch)
treeb55765e771adcc04e3d3e7ff2ad1adfbd08eaccd /drivers/nvme
parent63050a5ca130e76af7199c9a3fba1d175f3a1102 (diff)
parentd0f411c0b9bdef85f647e15a2fcc790b29891f2c (diff)
Merge tag 'block-6.1-2022-12-02' of git://git.kernel.dk/linux
Pull block fixes from Jens Axboe: "Just a small NVMe merge for this week, fixing protection of the name space list, and a missing clear of a reserved field when unused" * tag 'block-6.1-2022-12-02' of git://git.kernel.dk/linux: nvme: fix SRCU protection of nvme_ns_head list nvme-pci: clear the prp2 field when not used
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/core.c2
-rw-r--r--drivers/nvme/host/multipath.c3
-rw-r--r--drivers/nvme/host/pci.c2
3 files changed, 6 insertions, 1 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c
index da55ce45ac70..69e333922bea 100644
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@ -4304,7 +4304,7 @@ static void nvme_ns_remove(struct nvme_ns *ns)
mutex_unlock(&ns->ctrl->subsys->lock);
/* guarantee not available in head->list */
- synchronize_rcu();
+ synchronize_srcu(&ns->head->srcu);
if (!nvme_ns_head_multipath(ns->head))
nvme_cdev_del(&ns->cdev, &ns->cdev_device);
diff --git a/drivers/nvme/host/multipath.c b/drivers/nvme/host/multipath.c
index 93e2138a8b42..7e025b8948cb 100644
--- a/drivers/nvme/host/multipath.c
+++ b/drivers/nvme/host/multipath.c
@@ -174,11 +174,14 @@ void nvme_mpath_revalidate_paths(struct nvme_ns *ns)
struct nvme_ns_head *head = ns->head;
sector_t capacity = get_capacity(head->disk);
int node;
+ int srcu_idx;
+ srcu_idx = srcu_read_lock(&head->srcu);
list_for_each_entry_rcu(ns, &head->list, siblings) {
if (capacity != get_capacity(ns->disk))
clear_bit(NVME_NS_READY, &ns->flags);
}
+ srcu_read_unlock(&head->srcu, srcu_idx);
for_each_node(node)
rcu_assign_pointer(head->current_path[node], NULL);
diff --git a/drivers/nvme/host/pci.c b/drivers/nvme/host/pci.c
index f4335519399d..488ad7dabeb8 100644
--- a/drivers/nvme/host/pci.c
+++ b/drivers/nvme/host/pci.c
@@ -797,6 +797,8 @@ static blk_status_t nvme_setup_prp_simple(struct nvme_dev *dev,
cmnd->dptr.prp1 = cpu_to_le64(iod->first_dma);
if (bv->bv_len > first_prp_len)
cmnd->dptr.prp2 = cpu_to_le64(iod->first_dma + first_prp_len);
+ else
+ cmnd->dptr.prp2 = 0;
return BLK_STS_OK;
}