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[v11,02/16] block: Define BDRV_O_SHARE_RW

Message ID 20170120072310.8009-3-famz@redhat.com
State New
Headers show

Commit Message

Fam Zheng Jan. 20, 2017, 7:22 a.m. UTC 
Signed-off-by: Fam Zheng <famz@redhat.com>
---
 include/block/block.h | 2 ++
 1 file changed, 2 insertions(+)
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Patch

diff --git a/include/block/block.h b/include/block/block.h
index 8b0dcda..243839d 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -97,6 +97,8 @@  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)