* struct nilfs_inode - structure of an inode on disk
* @i_blocks: blocks count
* @i_size: size in bytes
- * @i_ctime: creation time
- * @i_mtime: modification time
- * @i_dtime: deletion time
+ * @i_ctime: creation time (seconds)
+ * @i_mtime: modification time (seconds)
+ * @i_ctime_nsec: creation time (nano seconds)
+ * @i_mtime_nsec: modification time (nano seconds)
* @i_uid: user id
* @i_gid: group id
* @i_mode: file mode
__le64 i_size;
__le64 i_ctime;
__le64 i_mtime;
- __le64 i_dtime;
+ __le32 i_ctime_nsec;
+ __le32 i_mtime_nsec;
__le32 i_uid;
__le32 i_gid;
__le16 i_mode;
#define NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */
#define NILFS_MOUNT_STRICT_ORDER 0x2000 /* Apply strict in-order
semantics also for data */
+#define NILFS_MOUNT_NORECOVERY 0x4000 /* Disable write access during
+ mount-time recovery */
+#define NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */
/**
__le32 s_creator_os; /* OS */
__le16 s_def_resuid; /* Default uid for reserved blocks */
__le16 s_def_resgid; /* Default gid for reserved blocks */
- __le32 s_first_ino; /* First non-reserved inode */
+ __le32 s_first_ino; /* First non-reserved inode */
- __le16 s_inode_size; /* Size of an inode */
+ __le16 s_inode_size; /* Size of an inode */
__le16 s_dat_entry_size; /* Size of a dat entry */
__le16 s_checkpoint_size; /* Size of a checkpoint */
__le16 s_segment_usage_size; /* Size of a segment usage */
__u8 s_uuid[16]; /* 128-bit uuid for volume */
- char s_volume_name[16]; /* volume name */
- char s_last_mounted[64]; /* directory where last mounted */
+ char s_volume_name[80]; /* volume name */
__le32 s_c_interval; /* Commit interval of segment */
__le32 s_c_block_max; /* Threshold of data amount for
#define NILFS_MIN_NRSVSEGS 8 /* Minimum number of reserved
segments */
+/*
+ * bytes offset of secondary super block
+ */
+#define NILFS_SB2_OFFSET_BYTES(devsize) ((((devsize) >> 12) - 1) << 12)
/*
* Maximal count of links to a file
* @ss_nfinfo: number of finfo structures
* @ss_sumbytes: total size of segment summary in bytes
* @ss_pad: padding
+ * @ss_cno: checkpoint number
*/
struct nilfs_segment_summary {
__le32 ss_datasum;
__le32 ss_nfinfo;
__le32 ss_sumbytes;
__le32 ss_pad;
+ __le64 ss_cno;
/* array of finfo structures */
};
#define NILFS_SS_GC 0x0010 /* segment written for cleaner operation */
/**
+ * struct nilfs_btree_node - B-tree node
+ * @bn_flags: flags
+ * @bn_level: level
+ * @bn_nchildren: number of children
+ * @bn_pad: padding
+ */
+struct nilfs_btree_node {
+ __u8 bn_flags;
+ __u8 bn_level;
+ __le16 bn_nchildren;
+ __le32 bn_pad;
+};
+
+/* flags */
+#define NILFS_BTREE_NODE_ROOT 0x01
+
+/* level */
+#define NILFS_BTREE_LEVEL_DATA 0
+#define NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1)
+#define NILFS_BTREE_LEVEL_MAX 14
+
+/**
* struct nilfs_palloc_group_desc - block group descriptor
* @pg_nfrees: number of free entries in block group
*/
/**
* struct nilfs_dat_entry - disk address translation entry
- * @dt_blocknr: block number
- * @dt_start: start checkpoint number
- * @dt_end: end checkpoint number
- * @dt_rsv: reserved for future use
+ * @de_blocknr: block number
+ * @de_start: start checkpoint number
+ * @de_end: end checkpoint number
+ * @de_rsv: reserved for future use
*/
struct nilfs_dat_entry {
__le64 de_blocknr;
};
/**
- * struct nilfs_dat_group_desc - block group descriptor
- * @dg_nfrees: number of free virtual block numbers in block group
- */
-struct nilfs_dat_group_desc {
- __le32 dg_nfrees;
-};
-
-
-/**
* struct nilfs_snapshot_list - snapshot list
* @ssl_next: next checkpoint number on snapshot list
* @ssl_prev: previous checkpoint number on snapshot list
NILFS_CHECKPOINT_SNAPSHOT,
NILFS_CHECKPOINT_INVALID,
NILFS_CHECKPOINT_SKETCH,
+ NILFS_CHECKPOINT_MINOR,
};
#define NILFS_CHECKPOINT_FNS(flag, name) \
NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot)
NILFS_CHECKPOINT_FNS(INVALID, invalid)
-NILFS_CHECKPOINT_FNS(SKETCH, sketch)
+NILFS_CHECKPOINT_FNS(MINOR, minor)
/**
* struct nilfs_cpinfo - checkpoint information
NILFS_CPINFO_FNS(SNAPSHOT, snapshot)
NILFS_CPINFO_FNS(INVALID, invalid)
-NILFS_CPINFO_FNS(SKETCH, sketch)
+NILFS_CPINFO_FNS(MINOR, minor)
/**
NILFS_SEGMENT_USAGE_DIRTY,
NILFS_SEGMENT_USAGE_ERROR,
- /* on-memory only */
- NILFS_SEGMENT_USAGE_VOLATILE_ACTIVE,
/* ... */
};
NILFS_SEGMENT_USAGE_FNS(ACTIVE, active)
NILFS_SEGMENT_USAGE_FNS(DIRTY, dirty)
NILFS_SEGMENT_USAGE_FNS(ERROR, error)
-NILFS_SEGMENT_USAGE_FNS(VOLATILE_ACTIVE, volatile_active)
static inline void
nilfs_segment_usage_set_clean(struct nilfs_segment_usage *su)
NILFS_SUINFO_FNS(ACTIVE, active)
NILFS_SUINFO_FNS(DIRTY, dirty)
NILFS_SUINFO_FNS(ERROR, error)
-NILFS_SUINFO_FNS(VOLATILE_ACTIVE, volatile_active)
static inline int nilfs_suinfo_clean(const struct nilfs_suinfo *si)
{
* @ss_nsegs: number of segments
* @ss_ncleansegs: number of clean segments
* @ss_ndirtysegs: number of dirty segments
- * @ss_ctime:
- * @ss_nongc_ctime:
+ * @ss_ctime: creation time of the last segment
+ * @ss_nongc_ctime: creation time of the last segment not for GC
+ * @ss_prot_seq: least sequence number of segments which must not be reclaimed
*/
struct nilfs_sustat {
__u64 ss_nsegs;
__u64 ss_ndirtysegs;
__u64 ss_ctime;
__u64 ss_nongc_ctime;
+ __u64 ss_prot_seq;
};
/**