diff options
Diffstat (limited to 'include/uapi/linux/raid/md_p.h')
| -rw-r--r-- | include/uapi/linux/raid/md_p.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h index d1fc8a637368..eaaab52077a3 100644 --- a/include/uapi/linux/raid/md_p.h +++ b/include/uapi/linux/raid/md_p.h @@ -89,9 +89,11 @@ * read requests will only be sent here in * dire need */ +#define MD_DISK_JOURNAL 18 /* disk is used as the write journal in RAID-5/6 */ #define MD_DISK_ROLE_SPARE 0xffff #define MD_DISK_ROLE_FAULTY 0xfffe +#define MD_DISK_ROLE_JOURNAL 0xfffd #define MD_DISK_ROLE_MAX 0xff00 /* max value of regular disk role */ typedef struct mdp_device_descriptor_s { @@ -307,6 +309,7 @@ struct mdp_superblock_1 { * is guided by bitmap. */ #define MD_FEATURE_CLUSTERED 256 /* clustered MD */ +#define MD_FEATURE_JOURNAL 512 /* support write cache */ #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |MD_FEATURE_RECOVERY_OFFSET \ |MD_FEATURE_RESHAPE_ACTIVE \ |