diff options
Diffstat (limited to 'linux-headers/include/linux/hyperv.h')
| -rw-r--r-- | linux-headers/include/linux/hyperv.h | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/linux-headers/include/linux/hyperv.h b/linux-headers/include/linux/hyperv.h index af92307..d95359e 100644 --- a/linux-headers/include/linux/hyperv.h +++ b/linux-headers/include/linux/hyperv.h @@ -26,7 +26,7 @@ #ifndef _HYPERV_H #define _HYPERV_H -#include <linux/uuid.h> +#include <linux/types.h> /* * Framework version for util services. @@ -90,6 +90,17 @@ struct hv_vss_check_dm_info { __u32 flags; } __attribute__((packed)); +/* + * struct hv_vss_msg encodes the fields that the Linux VSS + * driver accesses. However, FREEZE messages from Hyper-V contain + * additional LUN information that Linux doesn't use and are not + * represented in struct hv_vss_msg. A received FREEZE message may + * be as large as 6,260 bytes, so the driver must allocate at least + * that much space, not sizeof(struct hv_vss_msg). Other messages + * such as AUTO_RECOVER may be as large as 12,500 bytes. However, + * because the Linux VSS driver responds that it doesn't support + * auto-recovery, it should not receive such messages. + */ struct hv_vss_msg { union { struct hv_vss_hdr vss_hdr; |