diff options
Diffstat (limited to 'include/block/block.h')
| -rw-r--r-- | include/block/block.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/include/block/block.h b/include/block/block.h index 50a07c1c33..a9df34ff94 100644 --- a/include/block/block.h +++ b/include/block/block.h @@ -88,8 +88,14 @@ typedef enum { * fallback. */ BDRV_REQ_NO_FALLBACK = 0x100, + /* + * BDRV_REQ_PREFETCH may be used only together with BDRV_REQ_COPY_ON_READ + * on read request and means that caller doesn't really need data to be + * written to qiov parameter which may be NULL. + */ + BDRV_REQ_PREFETCH = 0x200, /* Mask of valid flags */ - BDRV_REQ_MASK = 0x1ff, + BDRV_REQ_MASK = 0x3ff, } BdrvRequestFlags; typedef struct BlockSizes { |