2 files changed, 5 insertions, 2 deletions

diff --git a/include/linux/genhd.h b/include/linux/genhd.h
index 6957350e122f..9de31bc98c88 100644
--- a/include/linux/genhd.h
+++ b/include/linux/genhd.h
@@ -131,6 +131,7 @@ struct hd_struct {
 #define GENHD_FL_EXT_DEVT                       64 /* allow extended devt */
 #define GENHD_FL_NATIVE_CAPACITY                128
 #define GENHD_FL_BLOCK_EVENTS_ON_EXCL_WRITE     256
+#define GENHD_FL_NO_PART_SCAN                   512
 
 enum {
         DISK_EVENT_MEDIA_CHANGE                 = 1 << 0, /* media changed */
@@ -238,9 +239,10 @@ static inline int disk_max_parts(struct gendisk *disk)
         return disk->minors;
 }
 
-static inline bool disk_partitionable(struct gendisk *disk)
+static inline bool disk_part_scan_enabled(struct gendisk *disk)
 {
-        return disk_max_parts(disk) > 1;
+        return disk_max_parts(disk) > 1 &&
+                !(disk->flags & GENHD_FL_NO_PART_SCAN);
 }
 
 static inline dev_t disk_devt(struct gendisk *disk)
diff --git a/include/linux/loop.h b/include/linux/loop.h
index a06880689115..11a41a8f08eb 100644
--- a/include/linux/loop.h
+++ b/include/linux/loop.h
@@ -74,6 +74,7 @@ struct loop_device {
 enum {
         LO_FLAGS_READ_ONLY      = 1,
         LO_FLAGS_AUTOCLEAR      = 4,
+        LO_FLAGS_PARTSCAN       = 8,
 };
 
 #include <asm/posix_types.h>    /* for __kernel_old_dev_t */