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-rw-r--r--include/block/block.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/block/block.h b/include/block/block.h
index 3560deb883..ba2082c0c6 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -62,6 +62,11 @@ typedef struct BlockDevOps {
void (*resize_cb)(void *opaque);
} BlockDevOps;
+typedef enum {
+ BDRV_REQ_COPY_ON_READ = 0x1,
+ BDRV_REQ_ZERO_WRITE = 0x2,
+} BdrvRequestFlags;
+
#define BDRV_O_RDWR 0x0002
#define BDRV_O_SNAPSHOT 0x0008 /* open the file read only and save writes in a snapshot */
#define BDRV_O_NOCACHE 0x0020 /* do not use the host page cache */