genhd: send async notification on media change

Send an uevent to user space to indicate that a media change event has
occurred.

Signed-off-by: Kristen Carlson Accardi <kristen.c.accardi@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 3 insertions, 1 deletions

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 3fcfed2168a7..9756fc102a83 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -66,6 +66,7 @@ struct partition {
 #include <linux/smp.h>
 #include <linux/string.h>
 #include <linux/fs.h>
+#include <linux/workqueue.h>
 
 struct partition {
         unsigned char boot_ind;         /* 0x80 - active */
@@ -139,6 +140,7 @@ struct gendisk {
 #else
         struct disk_stats dkstats;
 #endif
+        struct work_struct async_notify;
 };
 
 /* Structure for sysfs attributes on block devices */
@@ -420,7 +422,7 @@ extern struct gendisk *alloc_disk_node(int minors, int node_id);
 extern struct gendisk *alloc_disk(int minors);
 extern struct kobject *get_disk(struct gendisk *disk);
 extern void put_disk(struct gendisk *disk);
-
+extern void genhd_media_change_notify(struct gendisk *disk);
 extern void blk_register_region(dev_t dev, unsigned long range,
                         struct module *module,
                         struct kobject *(*probe)(dev_t, int *, void *),