diff options
Diffstat (limited to 'drivers/block/null_blk/main.c')
| -rw-r--r-- | drivers/block/null_blk/main.c | 31 |
1 files changed, 20 insertions, 11 deletions
diff --git a/drivers/block/null_blk/main.c b/drivers/block/null_blk/main.c index 3c3d8d200abb..d94ef37480bd 100644 --- a/drivers/block/null_blk/main.c +++ b/drivers/block/null_blk/main.c @@ -266,6 +266,10 @@ static bool g_zone_full; module_param_named(zone_full, g_zone_full, bool, S_IRUGO); MODULE_PARM_DESC(zone_full, "Initialize the sequential write required zones of a zoned device to be full. Default: false"); +static bool g_rotational; +module_param_named(rotational, g_rotational, bool, S_IRUGO); +MODULE_PARM_DESC(rotational, "Set the rotational feature for the device. Default: false"); + static struct nullb_device *null_alloc_dev(void); static void null_free_dev(struct nullb_device *dev); static void null_del_dev(struct nullb *nullb); @@ -468,6 +472,7 @@ NULLB_DEVICE_ATTR(no_sched, bool, NULL); NULLB_DEVICE_ATTR(shared_tags, bool, NULL); NULLB_DEVICE_ATTR(shared_tag_bitmap, bool, NULL); NULLB_DEVICE_ATTR(fua, bool, NULL); +NULLB_DEVICE_ATTR(rotational, bool, NULL); static ssize_t nullb_device_power_show(struct config_item *item, char *page) { @@ -621,6 +626,7 @@ static struct configfs_attribute *nullb_device_attrs[] = { &nullb_device_attr_shared_tags, &nullb_device_attr_shared_tag_bitmap, &nullb_device_attr_fua, + &nullb_device_attr_rotational, NULL, }; @@ -706,7 +712,8 @@ static ssize_t memb_group_features_show(struct config_item *item, char *page) "shared_tags,size,submit_queues,use_per_node_hctx," "virt_boundary,zoned,zone_capacity,zone_max_active," "zone_max_open,zone_nr_conv,zone_offline,zone_readonly," - "zone_size,zone_append_max_sectors,zone_full\n"); + "zone_size,zone_append_max_sectors,zone_full," + "rotational\n"); } CONFIGFS_ATTR_RO(memb_group_, features); @@ -793,6 +800,7 @@ static struct nullb_device *null_alloc_dev(void) dev->shared_tags = g_shared_tags; dev->shared_tag_bitmap = g_shared_tag_bitmap; dev->fua = g_fua; + dev->rotational = g_rotational; return dev; } @@ -899,7 +907,7 @@ static struct nullb_page *null_radix_tree_insert(struct nullb *nullb, u64 idx, if (radix_tree_insert(root, idx, t_page)) { null_free_page(t_page); t_page = radix_tree_lookup(root, idx); - WARN_ON(!t_page || t_page->page->index != idx); + WARN_ON(!t_page || t_page->page->private != idx); } else if (is_cache) nullb->dev->curr_cache += PAGE_SIZE; @@ -922,7 +930,7 @@ static void null_free_device_storage(struct nullb_device *dev, bool is_cache) (void **)t_pages, pos, FREE_BATCH); for (i = 0; i < nr_pages; i++) { - pos = t_pages[i]->page->index; + pos = t_pages[i]->page->private; ret = radix_tree_delete_item(root, pos, t_pages[i]); WARN_ON(ret != t_pages[i]); null_free_page(ret); @@ -948,7 +956,7 @@ static struct nullb_page *__null_lookup_page(struct nullb *nullb, root = is_cache ? &nullb->dev->cache : &nullb->dev->data; t_page = radix_tree_lookup(root, idx); - WARN_ON(t_page && t_page->page->index != idx); + WARN_ON(t_page && t_page->page->private != idx); if (t_page && (for_write || test_bit(sector_bit, t_page->bitmap))) return t_page; @@ -991,7 +999,7 @@ static struct nullb_page *null_insert_page(struct nullb *nullb, spin_lock_irq(&nullb->lock); idx = sector >> PAGE_SECTORS_SHIFT; - t_page->page->index = idx; + t_page->page->private = idx; t_page = null_radix_tree_insert(nullb, idx, t_page, !ignore_cache); radix_tree_preload_end(); @@ -1011,7 +1019,7 @@ static int null_flush_cache_page(struct nullb *nullb, struct nullb_page *c_page) struct nullb_page *t_page, *ret; void *dst, *src; - idx = c_page->page->index; + idx = c_page->page->private; t_page = null_insert_page(nullb, idx << PAGE_SECTORS_SHIFT, true); @@ -1070,7 +1078,7 @@ again: * avoid race, we don't allow page free */ for (i = 0; i < nr_pages; i++) { - nullb->cache_flush_pos = c_pages[i]->page->index; + nullb->cache_flush_pos = c_pages[i]->page->private; /* * We found the page which is being flushed to disk by other * threads @@ -1783,9 +1791,8 @@ static int null_init_global_tag_set(void) tag_set.nr_hw_queues = g_submit_queues; tag_set.queue_depth = g_hw_queue_depth; tag_set.numa_node = g_home_node; - tag_set.flags = BLK_MQ_F_SHOULD_MERGE; if (g_no_sched) - tag_set.flags |= BLK_MQ_F_NO_SCHED; + tag_set.flags |= BLK_MQ_F_NO_SCHED_BY_DEFAULT; if (g_shared_tag_bitmap) tag_set.flags |= BLK_MQ_F_TAG_HCTX_SHARED; if (g_blocking) @@ -1809,9 +1816,8 @@ static int null_setup_tagset(struct nullb *nullb) nullb->tag_set->nr_hw_queues = nullb->dev->submit_queues; nullb->tag_set->queue_depth = nullb->dev->hw_queue_depth; nullb->tag_set->numa_node = nullb->dev->home_node; - nullb->tag_set->flags = BLK_MQ_F_SHOULD_MERGE; if (nullb->dev->no_sched) - nullb->tag_set->flags |= BLK_MQ_F_NO_SCHED; + nullb->tag_set->flags |= BLK_MQ_F_NO_SCHED_BY_DEFAULT; if (nullb->dev->shared_tag_bitmap) nullb->tag_set->flags |= BLK_MQ_F_TAG_HCTX_SHARED; if (nullb->dev->blocking) @@ -1938,6 +1944,9 @@ static int null_add_dev(struct nullb_device *dev) lim.features |= BLK_FEAT_FUA; } + if (dev->rotational) + lim.features |= BLK_FEAT_ROTATIONAL; + nullb->disk = blk_mq_alloc_disk(nullb->tag_set, &lim, nullb); if (IS_ERR(nullb->disk)) { rv = PTR_ERR(nullb->disk); |