diff options
| -rw-r--r-- | block/genhd.c | 24 | ||||
| -rw-r--r-- | include/linux/genhd.h | 2 |
2 files changed, 26 insertions, 0 deletions
diff --git a/block/genhd.c b/block/genhd.c index ff6268970ddc..6a60131baffa 100644 --- a/block/genhd.c +++ b/block/genhd.c @@ -46,6 +46,30 @@ static void disk_add_events(struct gendisk *disk); static void disk_del_events(struct gendisk *disk); static void disk_release_events(struct gendisk *disk); +/* + * Set disk capacity and notify if the size is not currently + * zero and will not be set to zero + */ +void set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size, + bool revalidate) +{ + sector_t capacity = get_capacity(disk); + + set_capacity(disk, size); + + if (revalidate) + revalidate_disk(disk); + + if (capacity != size && capacity != 0 && size != 0) { + char *envp[] = { "RESIZE=1", NULL }; + + kobject_uevent_env(&disk_to_dev(disk)->kobj, KOBJ_CHANGE, envp); + } +} + +EXPORT_SYMBOL_GPL(set_capacity_revalidate_and_notify); + + void part_inc_in_flight(struct request_queue *q, struct hd_struct *part, int rw) { if (queue_is_mq(q)) diff --git a/include/linux/genhd.h b/include/linux/genhd.h index e7244fb6b6ad..3c1a816785c8 100644 --- a/include/linux/genhd.h +++ b/include/linux/genhd.h @@ -508,6 +508,8 @@ static inline int get_disk_ro(struct gendisk *disk) extern void disk_block_events(struct gendisk *disk); extern void disk_unblock_events(struct gendisk *disk); extern void disk_flush_events(struct gendisk *disk, unsigned int mask); +extern void set_capacity_revalidate_and_notify(struct gendisk *disk, + sector_t size, bool revalidate); extern unsigned int disk_clear_events(struct gendisk *disk, unsigned int mask); /* drivers/char/random.c */ |