[PATCH 6/7] block: create 'slaves' and 'holders' entries for hidden gendisks
From: Christoph Hellwig <hch@lst.de>
Date: 2017-11-09 17:44:49
Also in:
linux-nvme
Subsystem:
block layer, the rest · Maintainers:
Jens Axboe, Linus Torvalds
From: Hannes Reinecke <hare@suse.de> When creating nvme multipath devices we should populate the 'slaves' and 'holders' directorys properly to aid userspace topology detection. Signed-off-by: Hannes Reinecke <hare@suse.com> [hch: split from a larger patch] Signed-off-by: Christoph Hellwig <hch@lst.de> --- block/genhd.c | 14 +++++++------- 1 file changed, 7 insertions(+), 7 deletions(-)
diff --git a/block/genhd.c b/block/genhd.c
index 835e907e6e01..3de1671631bf 100644
--- a/block/genhd.c
+++ b/block/genhd.c@@ -585,14 +585,14 @@ static void register_disk(struct device *parent, struct gendisk *disk) */ pm_runtime_set_memalloc_noio(ddev, true); + disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); + disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); + if (disk->flags & GENHD_FL_HIDDEN) { dev_set_uevent_suppress(ddev, 0); return; } - disk->part0.holder_dir = kobject_create_and_add("holders", &ddev->kobj); - disk->slave_dir = kobject_create_and_add("slaves", &ddev->kobj); - /* No minors to use for partitions */ if (!disk_part_scan_enabled(disk)) goto exit;
@@ -728,11 +728,11 @@ void del_gendisk(struct gendisk *disk) WARN_ON(1); } - if (!(disk->flags & GENHD_FL_HIDDEN)) { + if (!(disk->flags & GENHD_FL_HIDDEN)) blk_unregister_region(disk_devt(disk), disk->minors); - kobject_put(disk->part0.holder_dir); - kobject_put(disk->slave_dir); - } + + kobject_put(disk->part0.holder_dir); + kobject_put(disk->slave_dir); part_stat_set_all(&disk->part0, 0); disk->part0.stamp = 0;
--
2.14.2