diff options
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/linux/raid/md_p.h | 18 |
1 files changed, 14 insertions, 4 deletions
diff --git a/include/uapi/linux/raid/md_p.h b/include/uapi/linux/raid/md_p.h index 9930f3e9040f..fe2112810c43 100644 --- a/include/uapi/linux/raid/md_p.h +++ b/include/uapi/linux/raid/md_p.h @@ -242,10 +242,18 @@ struct mdp_superblock_1 { __le32 chunksize; /* in 512byte sectors */ __le32 raid_disks; - __le32 bitmap_offset; /* sectors after start of superblock that bitmap starts - * NOTE: signed, so bitmap can be before superblock - * only meaningful of feature_map[0] is set. - */ + union { + __le32 bitmap_offset; /* sectors after start of superblock that bitmap starts + * NOTE: signed, so bitmap can be before superblock + * only meaningful of feature_map[0] is set. + */ + + /* only meaningful when feature_map[MD_FEATURE_PPL] is set */ + struct { + __le16 offset; /* sectors from start of superblock that ppl starts (signed) */ + __le16 size; /* ppl size in sectors */ + } ppl; + }; /* These are only valid with feature bit '4' */ __le32 new_level; /* new level we are reshaping to */ @@ -318,6 +326,7 @@ struct mdp_superblock_1 { */ #define MD_FEATURE_CLUSTERED 256 /* clustered MD */ #define MD_FEATURE_JOURNAL 512 /* support write cache */ +#define MD_FEATURE_PPL 1024 /* support PPL */ #define MD_FEATURE_ALL (MD_FEATURE_BITMAP_OFFSET \ |MD_FEATURE_RECOVERY_OFFSET \ |MD_FEATURE_RESHAPE_ACTIVE \ @@ -328,6 +337,7 @@ struct mdp_superblock_1 { |MD_FEATURE_RECOVERY_BITMAP \ |MD_FEATURE_CLUSTERED \ |MD_FEATURE_JOURNAL \ + |MD_FEATURE_PPL \ ) struct r5l_payload_header { |