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author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-06 06:15:23 +0000 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-02-06 06:15:23 +0000 |
commit | ed535f2c9e00eafdeb57d6310b7c8c5a009a9262 (patch) | |
tree | 588d440a180c93dfb420b2a22b842a4001691192 /drivers/nvme/target/core.c | |
parent | 0384066381ed5572cf1f57f8d01eaccd3f6d4785 (diff) | |
parent | b74e58cd472cb782d34ecfad553c12c66eb02b6b (diff) |
Merge tag 'block-5.6-2020-02-05' of git://git.kernel.dk/linux-block
Pull more block updates from Jens Axboe:
"Some later arrivals, but all fixes at this point:
- bcache fix series (Coly)
- Series of BFQ fixes (Paolo)
- NVMe pull request from Keith with a few minor NVMe fixes
- Various little tweaks"
* tag 'block-5.6-2020-02-05' of git://git.kernel.dk/linux-block: (23 commits)
nvmet: update AEN list and array at one place
nvmet: Fix controller use after free
nvmet: Fix error print message at nvmet_install_queue function
brd: check and limit max_part par
nvme-pci: remove nvmeq->tags
nvmet: fix dsm failure when payload does not match sgl descriptor
nvmet: Pass lockdep expression to RCU lists
block, bfq: clarify the goal of bfq_split_bfqq()
block, bfq: get a ref to a group when adding it to a service tree
block, bfq: remove ifdefs from around gets/puts of bfq groups
block, bfq: extend incomplete name of field on_st
block, bfq: get extra ref to prevent a queue from being freed during a group move
block, bfq: do not insert oom queue into position tree
block, bfq: do not plug I/O for bfq_queues with no proc refs
bcache: check return value of prio_read()
bcache: fix incorrect data type usage in btree_flush_write()
bcache: add readahead cache policy options via sysfs interface
bcache: explicity type cast in bset_bkey_last()
bcache: fix memory corruption in bch_cache_accounting_clear()
xen/blkfront: limit allocated memory size to actual use case
...
Diffstat (limited to 'drivers/nvme/target/core.c')
-rw-r--r-- | drivers/nvme/target/core.c | 80 |
1 files changed, 51 insertions, 29 deletions
diff --git a/drivers/nvme/target/core.c b/drivers/nvme/target/core.c index 28438b833c1b..576de773b4db 100644 --- a/drivers/nvme/target/core.c +++ b/drivers/nvme/target/core.c @@ -129,27 +129,8 @@ static u32 nvmet_async_event_result(struct nvmet_async_event *aen) return aen->event_type | (aen->event_info << 8) | (aen->log_page << 16); } -static void nvmet_async_events_free(struct nvmet_ctrl *ctrl) -{ - struct nvmet_req *req; - - while (1) { - mutex_lock(&ctrl->lock); - if (!ctrl->nr_async_event_cmds) { - mutex_unlock(&ctrl->lock); - return; - } - - req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds]; - mutex_unlock(&ctrl->lock); - nvmet_req_complete(req, NVME_SC_INTERNAL | NVME_SC_DNR); - } -} - -static void nvmet_async_event_work(struct work_struct *work) +static void nvmet_async_events_process(struct nvmet_ctrl *ctrl, u16 status) { - struct nvmet_ctrl *ctrl = - container_of(work, struct nvmet_ctrl, async_event_work); struct nvmet_async_event *aen; struct nvmet_req *req; @@ -159,18 +140,41 @@ static void nvmet_async_event_work(struct work_struct *work) struct nvmet_async_event, entry); if (!aen || !ctrl->nr_async_event_cmds) { mutex_unlock(&ctrl->lock); - return; + break; } req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds]; - nvmet_set_result(req, nvmet_async_event_result(aen)); + if (status == 0) + nvmet_set_result(req, nvmet_async_event_result(aen)); list_del(&aen->entry); kfree(aen); mutex_unlock(&ctrl->lock); - nvmet_req_complete(req, 0); + nvmet_req_complete(req, status); + } +} + +static void nvmet_async_events_free(struct nvmet_ctrl *ctrl) +{ + struct nvmet_req *req; + + mutex_lock(&ctrl->lock); + while (ctrl->nr_async_event_cmds) { + req = ctrl->async_event_cmds[--ctrl->nr_async_event_cmds]; + mutex_unlock(&ctrl->lock); + nvmet_req_complete(req, NVME_SC_INTERNAL | NVME_SC_DNR); + mutex_lock(&ctrl->lock); } + mutex_unlock(&ctrl->lock); +} + +static void nvmet_async_event_work(struct work_struct *work) +{ + struct nvmet_ctrl *ctrl = + container_of(work, struct nvmet_ctrl, async_event_work); + + nvmet_async_events_process(ctrl, 0); } void nvmet_add_async_event(struct nvmet_ctrl *ctrl, u8 event_type, @@ -555,7 +559,8 @@ int nvmet_ns_enable(struct nvmet_ns *ns) } else { struct nvmet_ns *old; - list_for_each_entry_rcu(old, &subsys->namespaces, dev_link) { + list_for_each_entry_rcu(old, &subsys->namespaces, dev_link, + lockdep_is_held(&subsys->lock)) { BUG_ON(ns->nsid == old->nsid); if (ns->nsid < old->nsid) break; @@ -752,19 +757,24 @@ static void nvmet_confirm_sq(struct percpu_ref *ref) void nvmet_sq_destroy(struct nvmet_sq *sq) { + u16 status = NVME_SC_INTERNAL | NVME_SC_DNR; + struct nvmet_ctrl *ctrl = sq->ctrl; + /* * If this is the admin queue, complete all AERs so that our * queue doesn't have outstanding requests on it. */ - if (sq->ctrl && sq->ctrl->sqs && sq->ctrl->sqs[0] == sq) - nvmet_async_events_free(sq->ctrl); + if (ctrl && ctrl->sqs && ctrl->sqs[0] == sq) { + nvmet_async_events_process(ctrl, status); + nvmet_async_events_free(ctrl); + } percpu_ref_kill_and_confirm(&sq->ref, nvmet_confirm_sq); wait_for_completion(&sq->confirm_done); wait_for_completion(&sq->free_done); percpu_ref_exit(&sq->ref); - if (sq->ctrl) { - nvmet_ctrl_put(sq->ctrl); + if (ctrl) { + nvmet_ctrl_put(ctrl); sq->ctrl = NULL; /* allows reusing the queue later */ } } @@ -938,6 +948,17 @@ bool nvmet_check_data_len(struct nvmet_req *req, size_t data_len) } EXPORT_SYMBOL_GPL(nvmet_check_data_len); +bool nvmet_check_data_len_lte(struct nvmet_req *req, size_t data_len) +{ + if (unlikely(data_len > req->transfer_len)) { + req->error_loc = offsetof(struct nvme_common_command, dptr); + nvmet_req_complete(req, NVME_SC_SGL_INVALID_DATA | NVME_SC_DNR); + return false; + } + + return true; +} + int nvmet_req_alloc_sgl(struct nvmet_req *req) { struct pci_dev *p2p_dev = NULL; @@ -1172,7 +1193,8 @@ static void nvmet_setup_p2p_ns_map(struct nvmet_ctrl *ctrl, ctrl->p2p_client = get_device(req->p2p_client); - list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link) + list_for_each_entry_rcu(ns, &ctrl->subsys->namespaces, dev_link, + lockdep_is_held(&ctrl->subsys->lock)) nvmet_p2pmem_ns_add_p2p(ctrl, ns); } |