diff options
Diffstat (limited to 'block/genhd.c')
| -rw-r--r-- | block/genhd.c | 17 |
1 files changed, 16 insertions, 1 deletions
diff --git a/block/genhd.c b/block/genhd.c index de789d1a1e3d..74e19d67ceab 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -19,6 +19,7 @@ #include <linux/seq_file.h> #include <linux/slab.h> #include <linux/kmod.h> +#include <linux/major.h> #include <linux/mutex.h> #include <linux/idr.h> #include <linux/log2.h> @@ -323,7 +324,7 @@ int blk_alloc_ext_minor(void) { int idx; - idx = ida_alloc_range(&ext_devt_ida, 0, NR_EXT_DEVT, GFP_KERNEL); + idx = ida_alloc_range(&ext_devt_ida, 0, NR_EXT_DEVT - 1, GFP_KERNEL); if (idx == -ENOSPC) return -EBUSY; return idx; @@ -545,6 +546,20 @@ out_free_ext_minor: EXPORT_SYMBOL(device_add_disk); /** + * blk_mark_disk_dead - mark a disk as dead + * @disk: disk to mark as dead + * + * Mark as disk as dead (e.g. surprise removed) and don't accept any new I/O + * to this disk. + */ +void blk_mark_disk_dead(struct gendisk *disk) +{ + set_bit(GD_DEAD, &disk->state); + blk_queue_start_drain(disk->queue); +} +EXPORT_SYMBOL_GPL(blk_mark_disk_dead); + +/** * del_gendisk - remove the gendisk * @disk: the struct gendisk to remove * |