Merge branch 'linus' into cont_syslog

[safe/jmp/linux-2.6] / include / linux / nilfs2_fs.h

diff --git a/include/linux/nilfs2_fs.h b/include/linux/nilfs2_fs.h
index 1275b30..8c2c611 100644 (file)
--- a/include/linux/nilfs2_fs.h
+++ b/include/linux/nilfs2_fs.h
@@ -67,9 +67,10 @@
  * 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
@@ -85,7 +86,8 @@ struct nilfs_inode {
        __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;
@@ -149,6 +151,9 @@ struct nilfs_super_root {
 #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 */
 
 
 /**
@@ -194,16 +199,15 @@ struct nilfs_super_block {
        __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
@@ -372,6 +376,7 @@ union nilfs_binfo {
  * @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;
@@ -386,6 +391,7 @@ struct nilfs_segment_summary {
        __le32 ss_nfinfo;
        __le32 ss_sumbytes;
        __le32 ss_pad;
+       __le64 ss_cno;
        /* array of finfo structures */
 };
 
@@ -401,6 +407,28 @@ struct nilfs_segment_summary {
 #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
  */
@@ -410,10 +438,10 @@ struct nilfs_palloc_group_desc {
 
 /**
  * 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;
@@ -423,15 +451,6 @@ struct nilfs_dat_entry {
 };
 
 /**
- * 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