Commit b5bd357cf8b ("block: add docs for gendisk / request_queue refcount
helpers") has a typo where it references drivers for del_gendisk() when we
instead meant userspace, as the reference is to the userspace experience.
This fixes this.

Signed-off-by: Luis Chamberlain <mcgrof@kernel.org>
---
 block/genhd.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/block/genhd.c b/block/genhd.c
index 0a273211fec2..9511620f558a 100644
--- a/block/genhd.c
+++ b/block/genhd.c

@@ -880,8 +880,8 @@ static void invalidate_partition(struct gendisk *disk, int partno)
  * with put_disk(), which should be called after del_gendisk(), if
  * __device_add_disk() was used.
  *
- * Drivers exist which depend on the release of the gendisk to be synchronous,
- * it should not be deferred.
+ * Userspace may exist which depends on the release of the gendisk to be
+ * synchronous, it should not be deferred.