diff options
Diffstat (limited to 'fs/exofs/common.h')
| -rw-r--r-- | fs/exofs/common.h | 18 |
1 files changed, 16 insertions, 2 deletions
diff --git a/fs/exofs/common.h b/fs/exofs/common.h index f0d520312d8b..5e74ad3d4009 100644 --- a/fs/exofs/common.h +++ b/fs/exofs/common.h @@ -53,10 +53,14 @@ #define EXOFS_ROOT_ID 0x10002 /* object ID for root directory */ /* exofs Application specific page/attribute */ +/* Inode attrs */ # define EXOFS_APAGE_FS_DATA (OSD_APAGE_APP_DEFINED_FIRST + 3) # define EXOFS_ATTR_INODE_DATA 1 # define EXOFS_ATTR_INODE_FILE_LAYOUT 2 # define EXOFS_ATTR_INODE_DIR_LAYOUT 3 +/* Partition attrs */ +# define EXOFS_APAGE_SB_DATA (0xF0000000U + 3) +# define EXOFS_ATTR_SB_STATS 1 /* * The maximum number of files we can have is limited by the size of the @@ -86,8 +90,8 @@ enum { */ enum {EXOFS_FSCB_VER = 1, EXOFS_DT_VER = 1}; struct exofs_fscb { - __le64 s_nextid; /* Highest object ID used */ - __le64 s_numfiles; /* Number of files on fs */ + __le64 s_nextid; /* Only used after mkfs */ + __le64 s_numfiles; /* Only used after mkfs */ __le32 s_version; /* == EXOFS_FSCB_VER */ __le16 s_magic; /* Magic signature */ __le16 s_newfs; /* Non-zero if this is a new fs */ @@ -98,6 +102,16 @@ struct exofs_fscb { } __packed; /* + * This struct is set on the FS partition's attributes. + * [EXOFS_APAGE_SB_DATA, EXOFS_ATTR_SB_STATS] and is written together + * with the create command, to atomically persist the sb writeable information. + */ +struct exofs_sb_stats { + __le64 s_nextid; /* Highest object ID used */ + __le64 s_numfiles; /* Number of files on fs */ +} __packed; + +/* * Describes the raid used in the FS. It is part of the device table. * This here is taken from the pNFS-objects definition. In exofs we * use one raid policy through-out the filesystem. (NOTE: the funny |