diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-25 11:06:05 -0800 |
---|---|---|
committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-11-25 11:06:05 -0800 |
commit | 8ced7ca3570333998ad2088d5a6275701970e28e (patch) | |
tree | d74d434536d4eb891e365015eaf541c40bfe826c | |
parent | de4444f5964933225b365a503db9a595b6588616 (diff) | |
parent | e30028ace8459ea096b093fc204f0d5e8fc3b6ae (diff) |
Merge tag 'block-5.16-2021-11-25' of git://git.kernel.dk/linux-block
Pull block fixes from Jens Axboe:
- NVMe pull request via Christoph:
- Add a NO APST quirk for a Kioxia device (Enzo Matsumiya)
- Fix write zeroes pi (Klaus Jensen)
- Various TCP transport fixes (Maurizio Lombardi and Varun
Prakash)
- Ignore invalid fast_io_fail_tmo values (Maurizio Lombardi)
- Use IOCB_NOWAIT only if the filesystem supports it (Maurizio
Lombardi)
- Module loading fix (Ming)
- Kerneldoc warning fix (Yang)
* tag 'block-5.16-2021-11-25' of git://git.kernel.dk/linux-block:
block: fix parameter not described warning
nvmet: use IOCB_NOWAIT only if the filesystem supports it
nvme: fix write zeroes pi
nvme-fabrics: ignore invalid fast_io_fail_tmo values
nvme-pci: add NO APST quirk for Kioxia device
nvme-tcp: fix memory leak when freeing a queue
nvme-tcp: validate R2T PDU in nvme_tcp_handle_r2t()
nvmet-tcp: fix incomplete data digest send
nvmet-tcp: fix memory leak when performing a controller reset
nvmet-tcp: add an helper to free the cmd buffers
nvmet-tcp: fix a race condition between release_queue and io_work
block: avoid to touch unloaded module instance when opening bdev
-rw-r--r-- | block/bdev.c | 12 | ||||
-rw-r--r-- | block/blk-core.c | 1 | ||||
-rw-r--r-- | drivers/nvme/host/core.c | 29 | ||||
-rw-r--r-- | drivers/nvme/host/fabrics.c | 3 | ||||
-rw-r--r-- | drivers/nvme/host/tcp.c | 61 | ||||
-rw-r--r-- | drivers/nvme/target/io-cmd-file.c | 4 | ||||
-rw-r--r-- | drivers/nvme/target/tcp.c | 44 |
7 files changed, 102 insertions, 52 deletions
diff --git a/block/bdev.c b/block/bdev.c index b4dab2fb6a74..b1d087e5e205 100644 --- a/block/bdev.c +++ b/block/bdev.c @@ -753,8 +753,7 @@ struct block_device *blkdev_get_no_open(dev_t dev) if (!bdev) return NULL; - if ((bdev->bd_disk->flags & GENHD_FL_HIDDEN) || - !try_module_get(bdev->bd_disk->fops->owner)) { + if ((bdev->bd_disk->flags & GENHD_FL_HIDDEN)) { put_device(&bdev->bd_device); return NULL; } @@ -764,7 +763,6 @@ struct block_device *blkdev_get_no_open(dev_t dev) void blkdev_put_no_open(struct block_device *bdev) { - module_put(bdev->bd_disk->fops->owner); put_device(&bdev->bd_device); } @@ -820,12 +818,14 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder) ret = -ENXIO; if (!disk_live(disk)) goto abort_claiming; + if (!try_module_get(disk->fops->owner)) + goto abort_claiming; if (bdev_is_partition(bdev)) ret = blkdev_get_part(bdev, mode); else ret = blkdev_get_whole(bdev, mode); if (ret) - goto abort_claiming; + goto put_module; if (mode & FMODE_EXCL) { bd_finish_claiming(bdev, holder); @@ -847,7 +847,8 @@ struct block_device *blkdev_get_by_dev(dev_t dev, fmode_t mode, void *holder) if (unblock_events) disk_unblock_events(disk); return bdev; - +put_module: + module_put(disk->fops->owner); abort_claiming: if (mode & FMODE_EXCL) bd_abort_claiming(bdev, holder); @@ -956,6 +957,7 @@ void blkdev_put(struct block_device *bdev, fmode_t mode) blkdev_put_whole(bdev, mode); mutex_unlock(&disk->open_mutex); + module_put(disk->fops->owner); blkdev_put_no_open(bdev); } EXPORT_SYMBOL(blkdev_put); diff --git a/block/blk-core.c b/block/blk-core.c index f0f38ca8e22f..1378d084c770 100644 --- a/block/blk-core.c +++ b/block/blk-core.c @@ -1017,6 +1017,7 @@ EXPORT_SYMBOL(submit_bio); /** * bio_poll - poll for BIO completions * @bio: bio to poll for + * @iob: batches of IO * @flags: BLK_POLL_* flags that control the behavior * * Poll for completions on queue associated with the bio. Returns number of diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 4b5de8f5435a..4c63564adeaa 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -895,10 +895,19 @@ static inline blk_status_t nvme_setup_write_zeroes(struct nvme_ns *ns, cpu_to_le64(nvme_sect_to_lba(ns, blk_rq_pos(req))); cmnd->write_zeroes.length = cpu_to_le16((blk_rq_bytes(req) >> ns->lba_shift) - 1); - if (nvme_ns_has_pi(ns)) + + if (nvme_ns_has_pi(ns)) { cmnd->write_zeroes.control = cpu_to_le16(NVME_RW_PRINFO_PRACT); - else - cmnd->write_zeroes.control = 0; + + switch (ns->pi_type) { + case NVME_NS_DPS_PI_TYPE1: + case NVME_NS_DPS_PI_TYPE2: + cmnd->write_zeroes.reftag = + cpu_to_le32(t10_pi_ref_tag(req)); + break; + } + } + return BLK_STS_OK; } @@ -2469,6 +2478,20 @@ static const struct nvme_core_quirk_entry core_quirks[] = { .vid = 0x14a4, .fr = "22301111", .quirks = NVME_QUIRK_SIMPLE_SUSPEND, + }, + { + /* + * This Kioxia CD6-V Series / HPE PE8030 device times out and + * aborts I/O during any load, but more easily reproducible + * with discards (fstrim). + * + * The device is left in a state where it is also not possible + * to use "nvme set-feature" to disable APST, but booting with + * nvme_core.default_ps_max_latency=0 works. + */ + .vid = 0x1e0f, + .mn = "KCD6XVUL6T40", + .quirks = NVME_QUIRK_NO_APST, } }; diff --git a/drivers/nvme/host/fabrics.c b/drivers/nvme/host/fabrics.c index c5a2b71c5268..282d54117e0a 100644 --- a/drivers/nvme/host/fabrics.c +++ b/drivers/nvme/host/fabrics.c @@ -698,6 +698,9 @@ static int nvmf_parse_options(struct nvmf_ctrl_options *opts, if (token >= 0) pr_warn("I/O fail on reconnect controller after %d sec\n", token); + else + token = -1; + opts->fast_io_fail_tmo = token; break; case NVMF_OPT_HOSTNQN: diff --git a/drivers/nvme/host/tcp.c b/drivers/nvme/host/tcp.c index 33bc83d8d992..4ceb28675fdf 100644 --- a/drivers/nvme/host/tcp.c +++ b/drivers/nvme/host/tcp.c @@ -572,7 +572,7 @@ static int nvme_tcp_handle_comp(struct nvme_tcp_queue *queue, return ret; } -static int nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req, +static void nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req, struct nvme_tcp_r2t_pdu *pdu) { struct nvme_tcp_data_pdu *data = req->pdu; @@ -581,32 +581,11 @@ static int nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req, u8 hdgst = nvme_tcp_hdgst_len(queue); u8 ddgst = nvme_tcp_ddgst_len(queue); + req->state = NVME_TCP_SEND_H2C_PDU; + req->offset = 0; req->pdu_len = le32_to_cpu(pdu->r2t_length); req->pdu_sent = 0; - if (unlikely(!req->pdu_len)) { - dev_err(queue->ctrl->ctrl.device, - "req %d r2t len is %u, probably a bug...\n", - rq->tag, req->pdu_len); - return -EPROTO; - } - - if (unlikely(req->data_sent + req->pdu_len > req->data_len)) { - dev_err(queue->ctrl->ctrl.device, - "req %d r2t len %u exceeded data len %u (%zu sent)\n", - rq->tag, req->pdu_len, req->data_len, - req->data_sent); - return -EPROTO; - } - - if (unlikely(le32_to_cpu(pdu->r2t_offset) < req->data_sent)) { - dev_err(queue->ctrl->ctrl.device, - "req %d unexpected r2t offset %u (expected %zu)\n", - rq->tag, le32_to_cpu(pdu->r2t_offset), - req->data_sent); - return -EPROTO; - } - memset(data, 0, sizeof(*data)); data->hdr.type = nvme_tcp_h2c_data; data->hdr.flags = NVME_TCP_F_DATA_LAST; @@ -622,7 +601,6 @@ static int nvme_tcp_setup_h2c_data_pdu(struct nvme_tcp_request *req, data->command_id = nvme_cid(rq); data->data_offset = pdu->r2t_offset; data->data_length = cpu_to_le32(req->pdu_len); - return 0; } static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue, @@ -630,7 +608,7 @@ static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue, { struct nvme_tcp_request *req; struct request *rq; - int ret; + u32 r2t_length = le32_to_cpu(pdu->r2t_length); rq = nvme_find_rq(nvme_tcp_tagset(queue), pdu->command_id); if (!rq) { @@ -641,13 +619,28 @@ static int nvme_tcp_handle_r2t(struct nvme_tcp_queue *queue, } req = blk_mq_rq_to_pdu(rq); - ret = nvme_tcp_setup_h2c_data_pdu(req, pdu); - if (unlikely(ret)) - return ret; + if (unlikely(!r2t_length)) { + dev_err(queue->ctrl->ctrl.device, + "req %d r2t len is %u, probably a bug...\n", + rq->tag, r2t_length); + return -EPROTO; + } - req->state = NVME_TCP_SEND_H2C_PDU; - req->offset = 0; + if (unlikely(req->data_sent + r2t_length > req->data_len)) { + dev_err(queue->ctrl->ctrl.device, + "req %d r2t len %u exceeded data len %u (%zu sent)\n", + rq->tag, r2t_length, req->data_len, req->data_sent); + return -EPROTO; + } + if (unlikely(le32_to_cpu(pdu->r2t_offset) < req->data_sent)) { + dev_err(queue->ctrl->ctrl.device, + "req %d unexpected r2t offset %u (expected %zu)\n", + rq->tag, le32_to_cpu(pdu->r2t_offset), req->data_sent); + return -EPROTO; + } + + nvme_tcp_setup_h2c_data_pdu(req, pdu); nvme_tcp_queue_request(req, false, true); return 0; @@ -1232,6 +1225,7 @@ static int nvme_tcp_alloc_async_req(struct nvme_tcp_ctrl *ctrl) static void nvme_tcp_free_queue(struct nvme_ctrl *nctrl, int qid) { + struct page *page; struct nvme_tcp_ctrl *ctrl = to_tcp_ctrl(nctrl); struct nvme_tcp_queue *queue = &ctrl->queues[qid]; @@ -1241,6 +1235,11 @@ static void nvme_tcp_free_queue(struct nvme_ctrl *nctrl, int qid) if (queue->hdr_digest || queue->data_digest) nvme_tcp_free_crypto(queue); + if (queue->pf_cache.va) { + page = virt_to_head_page(queue->pf_cache.va); + __page_frag_cache_drain(page, queue->pf_cache.pagecnt_bias); + queue->pf_cache.va = NULL; + } sock_release(queue->sock); kfree(queue->pdu); mutex_destroy(&queue->send_mutex); diff --git a/drivers/nvme/target/io-cmd-file.c b/drivers/nvme/target/io-cmd-file.c index 6aa30f30b572..6be6e59d273b 100644 --- a/drivers/nvme/target/io-cmd-file.c +++ b/drivers/nvme/target/io-cmd-file.c @@ -8,6 +8,7 @@ #include <linux/uio.h> #include <linux/falloc.h> #include <linux/file.h> +#include <linux/fs.h> #include "nvmet.h" #define NVMET_MAX_MPOOL_BVEC 16 @@ -266,7 +267,8 @@ static void nvmet_file_execute_rw(struct nvmet_req *req) if (req->ns->buffered_io) { if (likely(!req->f.mpool_alloc) && - nvmet_file_execute_io(req, IOCB_NOWAIT)) + (req->ns->file->f_mode & FMODE_NOWAIT) && + nvmet_file_execute_io(req, IOCB_NOWAIT)) return; nvmet_file_submit_buffered_io(req); } else diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c index 84c387e4bf43..cb6a473c3eaf 100644 --- a/drivers/nvme/target/tcp.c +++ b/drivers/nvme/target/tcp.c @@ -166,6 +166,8 @@ static struct workqueue_struct *nvmet_tcp_wq; static const struct nvmet_fabrics_ops nvmet_tcp_ops; static void nvmet_tcp_free_cmd(struct nvmet_tcp_cmd *c); static void nvmet_tcp_finish_cmd(struct nvmet_tcp_cmd *cmd); +static void nvmet_tcp_free_cmd_buffers(struct nvmet_tcp_cmd *cmd); +static void nvmet_tcp_unmap_pdu_iovec(struct nvmet_tcp_cmd *cmd); static inline u16 nvmet_tcp_cmd_tag(struct nvmet_tcp_queue *queue, struct nvmet_tcp_cmd *cmd) @@ -297,6 +299,16 @@ static int nvmet_tcp_check_ddgst(struct nvmet_tcp_queue *queue, void *pdu) return 0; } +static void nvmet_tcp_free_cmd_buffers(struct nvmet_tcp_cmd *cmd) +{ + WARN_ON(unlikely(cmd->nr_mapped > 0)); + + kfree(cmd->iov); + sgl_free(cmd->req.sg); + cmd->iov = NULL; + cmd->req.sg = NULL; +} + static void nvmet_tcp_unmap_pdu_iovec(struct nvmet_tcp_cmd *cmd) { struct scatterlist *sg; @@ -306,6 +318,8 @@ static void nvmet_tcp_unmap_pdu_iovec(struct nvmet_tcp_cmd *cmd) for (i = 0; i < cmd->nr_mapped; i++) kunmap(sg_page(&sg[i])); + + cmd->nr_mapped = 0; } static void nvmet_tcp_map_pdu_iovec(struct nvmet_tcp_cmd *cmd) @@ -387,7 +401,7 @@ static int nvmet_tcp_map_data(struct nvmet_tcp_cmd *cmd) return 0; err: - sgl_free(cmd->req.sg); + nvmet_tcp_free_cmd_buffers(cmd); return NVME_SC_INTERNAL; } @@ -632,10 +646,8 @@ static int nvmet_try_send_data(struct nvmet_tcp_cmd *cmd, bool last_in_batch) } } - if (queue->nvme_sq.sqhd_disabled) { - kfree(cmd->iov); - sgl_free(cmd->req.sg); - } + if (queue->nvme_sq.sqhd_disabled) + nvmet_tcp_free_cmd_buffers(cmd); return 1; @@ -664,8 +676,7 @@ static int nvmet_try_send_response(struct nvmet_tcp_cmd *cmd, if (left) return -EAGAIN; - kfree(cmd->iov); - sgl_free(cmd->req.sg); + nvmet_tcp_free_cmd_buffers(cmd); cmd->queue->snd_cmd = NULL; nvmet_tcp_put_cmd(cmd); return 1; @@ -700,10 +711,11 @@ static int nvmet_try_send_r2t(struct nvmet_tcp_cmd *cmd, bool last_in_batch) static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch) { struct nvmet_tcp_queue *queue = cmd->queue; + int left = NVME_TCP_DIGEST_LENGTH - cmd->offset; struct msghdr msg = { .msg_flags = MSG_DONTWAIT }; struct kvec iov = { .iov_base = (u8 *)&cmd->exp_ddgst + cmd->offset, - .iov_len = NVME_TCP_DIGEST_LENGTH - cmd->offset + .iov_len = left }; int ret; @@ -717,6 +729,10 @@ static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch) return ret; cmd->offset += ret; + left -= ret; + + if (left) + return -EAGAIN; if (queue->nvme_sq.sqhd_disabled) { cmd->queue->snd_cmd = NULL; @@ -1406,8 +1422,7 @@ static void nvmet_tcp_finish_cmd(struct nvmet_tcp_cmd *cmd) { nvmet_req_uninit(&cmd->req); nvmet_tcp_unmap_pdu_iovec(cmd); - kfree(cmd->iov); - sgl_free(cmd->req.sg); + nvmet_tcp_free_cmd_buffers(cmd); } static void nvmet_tcp_uninit_data_in_cmds(struct nvmet_tcp_queue *queue) @@ -1417,7 +1432,10 @@ static void nvmet_tcp_uninit_data_in_cmds(struct nvmet_tcp_queue *queue) for (i = 0; i < queue->nr_cmds; i++, cmd++) { if (nvmet_tcp_need_data_in(cmd)) - nvmet_tcp_finish_cmd(cmd); + nvmet_req_uninit(&cmd->req); + + nvmet_tcp_unmap_pdu_iovec(cmd); + nvmet_tcp_free_cmd_buffers(cmd); } if (!queue->nr_cmds && nvmet_tcp_need_data_in(&queue->connect)) { @@ -1437,7 +1455,9 @@ static void nvmet_tcp_release_queue_work(struct work_struct *w) mutex_unlock(&nvmet_tcp_queue_mutex); nvmet_tcp_restore_socket_callbacks(queue); - flush_work(&queue->io_work); + cancel_work_sync(&queue->io_work); + /* stop accepting incoming data */ + queue->rcv_state = NVMET_TCP_RECV_ERR; nvmet_tcp_uninit_data_in_cmds(queue); nvmet_sq_destroy(&queue->nvme_sq); |