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Merge branch 'nvme-5.0' of git://git.infradead.org/nvme into for-linus

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Pull NVMe fixes from Christoph for this release.

* 'nvme-5.0' of git://git.infradead.org/nvme:
  nvme-pci: fix rapid add remove sequence
  nvme: lock NS list changes while handling command effects
This commit is contained in:
Jens Axboe 2019-02-06 08:43:07 -07:00
commit d592974f8c
3 changed files with 20 additions and 11 deletions
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8
drivers/nvme/host/core.c
View File

@ -1253,6 +1253,7 @@ static u32 nvme_passthru_start(struct nvme_ctrl *ctrl, struct nvme_ns *ns,
* effects say only one namespace is affected.
*/
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
mutex_lock(&ctrl->scan_lock);
nvme_start_freeze(ctrl);
nvme_wait_freeze(ctrl);
}
@ -1281,8 +1282,10 @@ static void nvme_passthru_end(struct nvme_ctrl *ctrl, u32 effects)
*/
if (effects & NVME_CMD_EFFECTS_LBCC)
nvme_update_formats(ctrl);
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK))
if (effects & (NVME_CMD_EFFECTS_LBCC | NVME_CMD_EFFECTS_CSE_MASK)) {
nvme_unfreeze(ctrl);
mutex_unlock(&ctrl->scan_lock);
}
if (effects & NVME_CMD_EFFECTS_CCC)
nvme_init_identify(ctrl);
if (effects & (NVME_CMD_EFFECTS_NIC | NVME_CMD_EFFECTS_NCC))
@ -3401,6 +3404,7 @@ static void nvme_scan_work(struct work_struct *work)
if (nvme_identify_ctrl(ctrl, &id))
return;
mutex_lock(&ctrl->scan_lock);
nn = le32_to_cpu(id->nn);
if (ctrl->vs >= NVME_VS(1, 1, 0) &&
!(ctrl->quirks & NVME_QUIRK_IDENTIFY_CNS)) {
@ -3409,6 +3413,7 @@ static void nvme_scan_work(struct work_struct *work)
}
nvme_scan_ns_sequential(ctrl, nn);
out_free_id:
mutex_unlock(&ctrl->scan_lock);
kfree(id);
down_write(&ctrl->namespaces_rwsem);
list_sort(NULL, &ctrl->namespaces, ns_cmp);
@ -3652,6 +3657,7 @@ int nvme_init_ctrl(struct nvme_ctrl *ctrl, struct device *dev,
ctrl->state = NVME_CTRL_NEW;
spin_lock_init(&ctrl->lock);
mutex_init(&ctrl->scan_lock);
INIT_LIST_HEAD(&ctrl->namespaces);
init_rwsem(&ctrl->namespaces_rwsem);
ctrl->dev = dev;

1
drivers/nvme/host/nvme.h
View File

@ -154,6 +154,7 @@ struct nvme_ctrl {
enum nvme_ctrl_state state;
bool identified;
spinlock_t lock;
struct mutex scan_lock;
const struct nvme_ctrl_ops *ops;
struct request_queue *admin_q;
struct request_queue *connect_q;

22
drivers/nvme/host/pci.c
View File

@ -2557,16 +2557,7 @@ static void nvme_reset_work(struct work_struct *work)
if (dev->ctrl.ctrl_config & NVME_CC_ENABLE)
nvme_dev_disable(dev, false);
/*
* Introduce CONNECTING state from nvme-fc/rdma transports to mark the
* initializing procedure here.
*/
if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) {
dev_warn(dev->ctrl.device,
"failed to mark controller CONNECTING\n");
goto out;
}
mutex_lock(&dev->shutdown_lock);
result = nvme_pci_enable(dev);
if (result)
goto out;
@ -2585,6 +2576,17 @@ static void nvme_reset_work(struct work_struct *work)
*/
dev->ctrl.max_hw_sectors = NVME_MAX_KB_SZ << 1;
dev->ctrl.max_segments = NVME_MAX_SEGS;
mutex_unlock(&dev->shutdown_lock);
/*
* Introduce CONNECTING state from nvme-fc/rdma transports to mark the
* initializing procedure here.
*/
if (!nvme_change_ctrl_state(&dev->ctrl, NVME_CTRL_CONNECTING)) {
dev_warn(dev->ctrl.device,
"failed to mark controller CONNECTING\n");
goto out;
}
result = nvme_init_identify(&dev->ctrl);
if (result)