diff options
author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 12:12:44 -0700 |
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committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-10-13 12:12:44 -0700 |
commit | 3ad11d7ac8872b1c8da54494721fad8907ee41f7 (patch) | |
tree | 439d7cb75466978be936250c65a27ff05e82d9bc /drivers/nvme/host/core.c | |
parent | 857d64485e7c920364688a8a6dd0ffe5774327b6 (diff) | |
parent | 8858e8d98d5457ba23bcd0d99ce23e272b8b09a1 (diff) |
Merge tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block
Pull block updates from Jens Axboe:
- Series of merge handling cleanups (Baolin, Christoph)
- Series of blk-throttle fixes and cleanups (Baolin)
- Series cleaning up BDI, seperating the block device from the
backing_dev_info (Christoph)
- Removal of bdget() as a generic API (Christoph)
- Removal of blkdev_get() as a generic API (Christoph)
- Cleanup of is-partition checks (Christoph)
- Series reworking disk revalidation (Christoph)
- Series cleaning up bio flags (Christoph)
- bio crypt fixes (Eric)
- IO stats inflight tweak (Gabriel)
- blk-mq tags fixes (Hannes)
- Buffer invalidation fixes (Jan)
- Allow soft limits for zone append (Johannes)
- Shared tag set improvements (John, Kashyap)
- Allow IOPRIO_CLASS_RT for CAP_SYS_NICE (Khazhismel)
- DM no-wait support (Mike, Konstantin)
- Request allocation improvements (Ming)
- Allow md/dm/bcache to use IO stat helpers (Song)
- Series improving blk-iocost (Tejun)
- Various cleanups (Geert, Damien, Danny, Julia, Tetsuo, Tian, Wang,
Xianting, Yang, Yufen, yangerkun)
* tag 'block-5.10-2020-10-12' of git://git.kernel.dk/linux-block: (191 commits)
block: fix uapi blkzoned.h comments
blk-mq: move cancel of hctx->run_work to the front of blk_exit_queue
blk-mq: get rid of the dead flush handle code path
block: get rid of unnecessary local variable
block: fix comment and add lockdep assert
blk-mq: use helper function to test hw stopped
block: use helper function to test queue register
block: remove redundant mq check
block: invoke blk_mq_exit_sched no matter whether have .exit_sched
percpu_ref: don't refer to ref->data if it isn't allocated
block: ratelimit handle_bad_sector() message
blk-throttle: Re-use the throtl_set_slice_end()
blk-throttle: Open code __throtl_de/enqueue_tg()
blk-throttle: Move service tree validation out of the throtl_rb_first()
blk-throttle: Move the list operation after list validation
blk-throttle: Fix IO hang for a corner case
blk-throttle: Avoid tracking latency if low limit is invalid
blk-throttle: Avoid getting the current time if tg->last_finish_time is 0
blk-throttle: Remove a meaningless parameter for throtl_downgrade_state()
block: Remove redundant 'return' statement
...
Diffstat (limited to 'drivers/nvme/host/core.c')
-rw-r--r-- | drivers/nvme/host/core.c | 53 |
1 files changed, 35 insertions, 18 deletions
diff --git a/drivers/nvme/host/core.c b/drivers/nvme/host/core.c index 893e29624c16..d2397cfe178f 100644 --- a/drivers/nvme/host/core.c +++ b/drivers/nvme/host/core.c @@ -94,21 +94,34 @@ static void nvme_put_subsystem(struct nvme_subsystem *subsys); static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl, unsigned nsid); +static void nvme_update_bdev_size(struct gendisk *disk) +{ + struct block_device *bdev = bdget_disk(disk, 0); + + if (bdev) { + bd_set_nr_sectors(bdev, get_capacity(disk)); + bdput(bdev); + } +} + +/* + * Prepare a queue for teardown. + * + * This must forcibly unquiesce queues to avoid blocking dispatch, and only set + * the capacity to 0 after that to avoid blocking dispatchers that may be + * holding bd_butex. This will end buffered writers dirtying pages that can't + * be synced. + */ static void nvme_set_queue_dying(struct nvme_ns *ns) { - /* - * 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)) return; + blk_set_queue_dying(ns->queue); - /* Forcibly unquiesce queues to avoid blocking dispatch */ blk_mq_unquiesce_queue(ns->queue); - /* - * Revalidate after unblocking dispatchers that may be holding bd_butex - */ - revalidate_disk(ns->disk); + + set_capacity(ns->disk, 0); + nvme_update_bdev_size(ns->disk); } static void nvme_queue_scan(struct nvme_ctrl *ctrl) @@ -2134,7 +2147,8 @@ static int __nvme_revalidate_disk(struct gendisk *disk, struct nvme_id_ns *id) nvme_update_disk_info(ns->head->disk, ns, id); blk_stack_limits(&ns->head->disk->queue->limits, &ns->queue->limits, 0); - nvme_mpath_update_disk_size(ns->head->disk); + blk_queue_update_readahead(ns->head->disk->queue); + nvme_update_bdev_size(ns->head->disk); } #endif return 0; @@ -2339,7 +2353,6 @@ static const struct block_device_operations nvme_fops = { .open = nvme_open, .release = nvme_release, .getgeo = nvme_getgeo, - .revalidate_disk= nvme_revalidate_disk, .report_zones = nvme_report_zones, .pr_ops = &nvme_pr_ops, }; @@ -3929,8 +3942,7 @@ static void nvme_alloc_ns(struct nvme_ctrl *ctrl, unsigned nsid) goto out_free_ns; if (ctrl->opts && ctrl->opts->data_digest) - ns->queue->backing_dev_info->capabilities - |= BDI_CAP_STABLE_WRITES; + blk_queue_flag_set(QUEUE_FLAG_STABLE_WRITES, ns->queue); blk_queue_flag_set(QUEUE_FLAG_NONROT, ns->queue); if (ctrl->ops->flags & NVME_F_PCI_P2PDMA) @@ -4056,14 +4068,19 @@ static void nvme_ns_remove_by_nsid(struct nvme_ctrl *ctrl, u32 nsid) static void nvme_validate_ns(struct nvme_ctrl *ctrl, unsigned nsid) { struct nvme_ns *ns; + int ret; ns = nvme_find_get_ns(ctrl, nsid); - if (ns) { - if (revalidate_disk(ns->disk)) - nvme_ns_remove(ns); - nvme_put_ns(ns); - } else + if (!ns) { nvme_alloc_ns(ctrl, nsid); + return; + } + + ret = nvme_revalidate_disk(ns->disk); + revalidate_disk_size(ns->disk, ret == 0); + if (ret) + nvme_ns_remove(ns); + nvme_put_ns(ns); } static void nvme_remove_invalid_namespaces(struct nvme_ctrl *ctrl, |