Hi Jens,
Today's linux-next merge of the block tree got a conflict in:
drivers/nvme/host/core.c
between commit:
075790ebba4a ("NVMe: Use IDA for namespace disk naming")
from Linus' tree and commit:
f4f0f63e6f01 ("nvme: fix drvdata setup for the nvme device")
from the block tree.
I fixed it up (see below) and can carry the fix as necessary (no action
is required).
--
Cheers,
Stephen Rothwell
diff --cc drivers/nvme/host/core.c
index 03c46412fff4,f08dccee8143..000000000000
--- a/drivers/nvme/host/core.c
+++ b/drivers/nvme/host/core.c
@@@ -561,13 -598,9 +603,13 @@@ static int nvme_revalidate_disk(struct
u16 old_ms;
unsigned short bs;
+ if (test_bit(NVME_NS_DEAD, &ns->flags)) {
+ set_capacity(disk, 0);
+ return -ENODEV;
+ }
if (nvme_identify_ns(ns->ctrl, ns->ns_id, &id)) {
- dev_warn(ns->ctrl->dev, "%s: Identify failure nvme%dn%d\n",
- __func__, ns->ctrl->instance, ns->ns_id);
+ dev_warn(disk_to_dev(ns->disk), "%s: Identify failure\n",
+ __func__);
return -ENODEV;
}
if (id->ncap == 0) {
@@@ -839,24 -874,8 +883,25 @@@ int nvme_shutdown_ctrl(struct nvme_ctr
return ret;
}
+ EXPORT_SYMBOL_GPL(nvme_shutdown_ctrl);
+static void nvme_set_queue_limits(struct nvme_ctrl *ctrl,
+ struct request_queue *q)
+{
+ if (ctrl->max_hw_sectors) {
+ u32 max_segments =
+ (ctrl->max_hw_sectors / (ctrl->page_size >> 9)) + 1;
+
+ blk_queue_max_hw_sectors(q, ctrl->max_hw_sectors);
+ blk_queue_max_segments(q, min_t(u32, max_segments, USHRT_MAX));
+ }
+ if (ctrl->stripe_size)
+ blk_queue_chunk_sectors(q, ctrl->stripe_size >> 9);
+ if (ctrl->vwc & NVME_CTRL_VWC_PRESENT)
+ blk_queue_flush(q, REQ_FLUSH | REQ_FUA);
+ blk_queue_virt_boundary(q, ctrl->page_size - 1);
+}
+
/*
* Initialize the cached copies of the Identify data and various controller
* register in our nvme_ctrl structure. This should be called as soon as
@@@ -1313,9 -1360,12 +1372,10 @@@ void nvme_remove_namespaces(struct nvme
{
struct nvme_ns *ns, *next;
- mutex_lock(&ctrl->namespaces_mutex);
list_for_each_entry_safe(ns, next, &ctrl->namespaces, list)
nvme_ns_remove(ns);
- mutex_unlock(&ctrl->namespaces_mutex);
}
+ EXPORT_SYMBOL_GPL(nvme_remove_namespaces);
static DEFINE_IDA(nvme_instance_ida);
@@@ -1401,8 -1452,6 +1463,7 @@@ int nvme_init_ctrl(struct nvme_ctrl *ct
goto out_release_instance;
}
get_device(ctrl->device);
- dev_set_drvdata(ctrl->device, ctrl);
+ ida_init(&ctrl->ns_ida);
spin_lock(&dev_list_lock);
list_add_tail(&ctrl->node, &nvme_ctrl_list);
@@@ -1414,39 -1463,8 +1475,40 @@@ out_release_instance
out:
return ret;
}
+ EXPORT_SYMBOL_GPL(nvme_init_ctrl);
+/**
+ * nvme_kill_queues(): Ends all namespace queues
+ * @ctrl: the dead controller that needs to end
+ *
+ * Call this function when the driver determines it is unable to get the
+ * controller in a state capable of servicing IO.
+ */
+void nvme_kill_queues(struct nvme_ctrl *ctrl)
+{
+ struct nvme_ns *ns;
+
+ mutex_lock(&ctrl->namespaces_mutex);
+ list_for_each_entry(ns, &ctrl->namespaces, list) {
+ if (!kref_get_unless_zero(&ns->kref))
+ continue;
+
+ /*
+ * Revalidating a dead namespace sets capacity to 0. This will
+ * end buffered writers dirtying pages that can't be synced.
+ */
+ if (!test_and_set_bit(NVME_NS_DEAD, &ns->flags))
+ revalidate_disk(ns->disk);
+
+ blk_set_queue_dying(ns->queue);
+ blk_mq_abort_requeue_list(ns->queue);
+ blk_mq_start_stopped_hw_queues(ns->queue, true);
+
+ nvme_put_ns(ns);
+ }
+ mutex_unlock(&ctrl->namespaces_mutex);
+}
+
void nvme_stop_queues(struct nvme_ctrl *ctrl)
{
struct nvme_ns *ns;
