[Qemu-block] [PATCH 02/14] block: Define BDRV_O_SHARE_RW

[Fam Zheng]

Signed-off-by: Fam Zheng <f...@redhat.com>
---
 include/block/block.h | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/include/block/block.h b/include/block/block.h
index 107c603..d09a932 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -98,6 +98,8 @@ typedef struct HDGeometry {
                                       select an appropriate protocol driver,
                                       ignoring the format layer */
 #define BDRV_O_NO_IO       0x10000 /* don't initialize for I/O */
+#define BDRV_O_SHARE_RW    0x20000 /* accept shared read-write from other users
+                                      of the image */
 
 #define BDRV_O_CACHE_MASK  (BDRV_O_NOCACHE | BDRV_O_NO_FLUSH)
 
-- 
2.7.4