[PATCH 1/2] block: add a return value to set_capacity_revalidate_and_notify

[Christoph Hellwig <hch@lst.de>]

Return if the function ended up sending an uevent or not.

Signed-off-by: Christoph Hellwig <hch@lst.de>
---
 block/genhd.c         | 5 ++++-
 include/linux/genhd.h | 2 +-
 2 files changed, 5 insertions(+), 2 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 0a273211fec283..9387f050c248a7 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -49,7 +49,7 @@ 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 set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size,
 					bool update_bdev)
 {
 	sector_t capacity = get_capacity(disk);
@@ -62,7 +62,10 @@ void set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size,
 		char *envp[] = { "RESIZE=1", NULL };
 
 		kobject_uevent_env(&disk_to_dev(disk)->kobj, KOBJ_CHANGE, envp);
+		return true;
 	}
+
+	return false;
 }
 
 EXPORT_SYMBOL_GPL(set_capacity_revalidate_and_notify);
diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 38f23d75701379..03da3f603d309c 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -315,7 +315,7 @@ 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);
-void set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size,
+bool set_capacity_revalidate_and_notify(struct gendisk *disk, sector_t size,
 		bool update_bdev);
 
 /* drivers/char/random.c */
-- 
2.28.0