X-Git-Url: http://pilppa.org/gitweb/gitweb.cgi?a=blobdiff_plain;f=fs%2Focfs2%2Focfs2_fs.h;h=3633edd3982f731a1c1c67bf1cdab945eea0689e;hb=e2920802351b3e01a3e70a26bb1bbb22f29da4cb;hp=b5c68567077ecaab02bfd0dd903d24f12e13eb56;hpb=e9ccb79927225d8cd8d022a7c09bfb2fad935b89;p=linux-2.6-omap-h63xx.git diff --git a/fs/ocfs2/ocfs2_fs.h b/fs/ocfs2/ocfs2_fs.h index b5c68567077..3633edd3982 100644 --- a/fs/ocfs2/ocfs2_fs.h +++ b/fs/ocfs2/ocfs2_fs.h @@ -85,9 +85,11 @@ #define OCFS2_CLEAR_INCOMPAT_FEATURE(sb,mask) \ OCFS2_SB(sb)->s_feature_incompat &= ~(mask) -#define OCFS2_FEATURE_COMPAT_SUPP 0 -#define OCFS2_FEATURE_INCOMPAT_SUPP OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT -#define OCFS2_FEATURE_RO_COMPAT_SUPP 0 +#define OCFS2_FEATURE_COMPAT_SUPP OCFS2_FEATURE_COMPAT_BACKUP_SB +#define OCFS2_FEATURE_INCOMPAT_SUPP (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \ + | OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \ + | OCFS2_FEATURE_INCOMPAT_INLINE_DATA) +#define OCFS2_FEATURE_RO_COMPAT_SUPP OCFS2_FEATURE_RO_COMPAT_UNWRITTEN /* * Heartbeat-only devices are missing journals and other files. The @@ -109,6 +111,44 @@ /* Support for sparse allocation in b-trees */ #define OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC 0x0010 +/* + * Tunefs sets this incompat flag before starting an operation which + * would require cleanup on abort. This is done to protect users from + * inadvertently mounting the fs after an aborted run without + * fsck-ing. + * + * s_tunefs_flags on the super block describes precisely which + * operations were in progress. + */ +#define OCFS2_FEATURE_INCOMPAT_TUNEFS_INPROG 0x0020 + +/* Support for data packed into inode blocks */ +#define OCFS2_FEATURE_INCOMPAT_INLINE_DATA 0x0040 + +/* + * backup superblock flag is used to indicate that this volume + * has backup superblocks. + */ +#define OCFS2_FEATURE_COMPAT_BACKUP_SB 0x0001 + +/* + * Unwritten extents support. + */ +#define OCFS2_FEATURE_RO_COMPAT_UNWRITTEN 0x0001 + +/* The byte offset of the first backup block will be 1G. + * The following will be 4G, 16G, 64G, 256G and 1T. + */ +#define OCFS2_BACKUP_SB_START 1 << 30 + +/* the max backup superblock nums */ +#define OCFS2_MAX_BACKUP_SUPERBLOCKS 6 + +/* + * Flags on ocfs2_super_block.s_tunefs_flags + */ +#define OCFS2_TUNEFS_INPROG_REMOVE_SLOT 0x0001 /* Removing slots */ + /* * Flags on ocfs2_dinode.i_flags */ @@ -126,6 +166,17 @@ #define OCFS2_CHAIN_FL (0x00000400) /* Chain allocator */ #define OCFS2_DEALLOC_FL (0x00000800) /* Truncate log */ +/* + * Flags on ocfs2_dinode.i_dyn_features + * + * These can change much more often than i_flags. When adding flags, + * keep in mind that i_dyn_features is only 16 bits wide. + */ +#define OCFS2_INLINE_DATA_FL (0x0001) /* Data stored in inode block */ +#define OCFS2_HAS_XATTR_FL (0x0002) +#define OCFS2_INLINE_XATTR_FL (0x0004) +#define OCFS2_INDEXED_DIR_FL (0x0008) + /* Inode attributes, keep in sync with EXT2 */ #define OCFS2_SECRM_FL (0x00000001) /* Secure deletion */ #define OCFS2_UNRM_FL (0x00000002) /* Undelete */ @@ -140,11 +191,59 @@ #define OCFS2_FL_VISIBLE (0x000100FF) /* User visible flags */ #define OCFS2_FL_MODIFIABLE (0x000100FF) /* User modifiable flags */ +/* + * Extent record flags (e_node.leaf.flags) + */ +#define OCFS2_EXT_UNWRITTEN (0x01) /* Extent is allocated but + * unwritten */ + /* * ioctl commands */ #define OCFS2_IOC_GETFLAGS _IOR('f', 1, long) #define OCFS2_IOC_SETFLAGS _IOW('f', 2, long) +#define OCFS2_IOC32_GETFLAGS _IOR('f', 1, int) +#define OCFS2_IOC32_SETFLAGS _IOW('f', 2, int) + +/* + * Space reservation / allocation / free ioctls and argument structure + * are designed to be compatible with XFS. + * + * ALLOCSP* and FREESP* are not and will never be supported, but are + * included here for completeness. + */ +struct ocfs2_space_resv { + __s16 l_type; + __s16 l_whence; + __s64 l_start; + __s64 l_len; /* len == 0 means until end of file */ + __s32 l_sysid; + __u32 l_pid; + __s32 l_pad[4]; /* reserve area */ +}; + +#define OCFS2_IOC_ALLOCSP _IOW ('X', 10, struct ocfs2_space_resv) +#define OCFS2_IOC_FREESP _IOW ('X', 11, struct ocfs2_space_resv) +#define OCFS2_IOC_RESVSP _IOW ('X', 40, struct ocfs2_space_resv) +#define OCFS2_IOC_UNRESVSP _IOW ('X', 41, struct ocfs2_space_resv) +#define OCFS2_IOC_ALLOCSP64 _IOW ('X', 36, struct ocfs2_space_resv) +#define OCFS2_IOC_FREESP64 _IOW ('X', 37, struct ocfs2_space_resv) +#define OCFS2_IOC_RESVSP64 _IOW ('X', 42, struct ocfs2_space_resv) +#define OCFS2_IOC_UNRESVSP64 _IOW ('X', 43, struct ocfs2_space_resv) + +/* Used to pass group descriptor data when online resize is done */ +struct ocfs2_new_group_input { + __u64 group; /* Group descriptor's blkno. */ + __u32 clusters; /* Total number of clusters in this group */ + __u32 frees; /* Total free clusters in this group */ + __u16 chain; /* Chain for this group */ + __u16 reserved1; + __u32 reserved2; +}; + +#define OCFS2_IOC_GROUP_EXTEND _IOW('o', 1, int) +#define OCFS2_IOC_GROUP_ADD _IOW('o', 2,struct ocfs2_new_group_input) +#define OCFS2_IOC_GROUP_ADD64 _IOW('o', 3,struct ocfs2_new_group_input) /* * Journal Flags (ocfs2_dinode.id1.journal1.i_flags) @@ -171,6 +270,14 @@ /* Journal limits (in bytes) */ #define OCFS2_MIN_JOURNAL_SIZE (4 * 1024 * 1024) +/* + * Default local alloc size (in megabytes) + * + * The value chosen should be such that most allocations, including new + * block groups, use local alloc. + */ +#define OCFS2_DEFAULT_LOCAL_ALLOC_SIZE 8 + struct ocfs2_system_inode_info { char *si_name; int si_iflags; @@ -268,10 +375,21 @@ static unsigned char ocfs2_type_by_mode[S_IFMT >> S_SHIFT] = { /* * On disk extent record for OCFS2 * It describes a range of clusters on disk. + * + * Length fields are divided into interior and leaf node versions. + * This leaves room for a flags field (OCFS2_EXT_*) in the leaf nodes. */ struct ocfs2_extent_rec { /*00*/ __le32 e_cpos; /* Offset into the file, in clusters */ - __le32 e_clusters; /* Clusters covered by this extent */ + union { + __le32 e_int_clusters; /* Clusters covered by all children */ + struct { + __le16 e_leaf_clusters; /* Clusters covered by this + extent */ + __u8 e_reserved1; + __u8 e_flags; /* Extent flags */ + }; + }; __le64 e_blkno; /* Physical disk offset, in blocks */ /*10*/ }; @@ -297,7 +415,10 @@ struct ocfs2_extent_list { /*00*/ __le16 l_tree_depth; /* Extent tree depth from this point. 0 means data extents hang directly off this - header (a leaf) */ + header (a leaf) + NOTE: The high 8 bits cannot be + used - tree_depth is never that big. + */ __le16 l_count; /* Number of extent records */ __le16 l_next_free_rec; /* Next unused extent slot */ __le16 l_reserved1; @@ -379,8 +500,8 @@ struct ocfs2_super_block { __le32 s_clustersize_bits; /* Clustersize for this fs */ /*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts before tunefs required */ - __le16 s_reserved1; - __le32 s_reserved2; + __le16 s_tunefs_flag; + __le32 s_reserved1; __le64 s_first_cluster_group; /* Block offset of 1st cluster * group header */ /*50*/ __u8 s_label[OCFS2_MAX_VOL_LABEL_LEN]; /* Label for mounting, etc. */ @@ -402,6 +523,19 @@ struct ocfs2_local_alloc /*10*/ __u8 la_bitmap[0]; }; +/* + * Data-in-inode header. This is only used if i_dyn_features has + * OCFS2_INLINE_DATA_FL set. + */ +struct ocfs2_inline_data +{ +/*00*/ __le16 id_count; /* Number of bytes that can be used + * for data, starting at id_data */ + __le16 id_reserved0; + __le32 id_reserved1; + __u8 id_data[0]; /* Start of user data */ +}; + /* * On disk inode for OCFS2 */ @@ -432,7 +566,9 @@ struct ocfs2_dinode { __le32 i_ctime_nsec; __le32 i_mtime_nsec; __le32 i_attr; - __le32 i_reserved1; + __le16 i_orphaned_slot; /* Only valid when OCFS2_ORPHANED_FL + was set in i_flags */ + __le16 i_dyn_features; /*70*/ __le64 i_reserved2[8]; /*B8*/ union { __le64 i_pad1; /* Generic way to refer to this @@ -458,6 +594,7 @@ struct ocfs2_dinode { struct ocfs2_chain_list i_chain; struct ocfs2_extent_list i_list; struct ocfs2_truncate_log i_dealloc; + struct ocfs2_inline_data i_data; __u8 i_symlink[0]; } id2; /* Actual on-disk size is one block */ @@ -507,6 +644,12 @@ static inline int ocfs2_fast_symlink_chars(struct super_block *sb) offsetof(struct ocfs2_dinode, id2.i_symlink); } +static inline int ocfs2_max_inline_data(struct super_block *sb) +{ + return sb->s_blocksize - + offsetof(struct ocfs2_dinode, id2.i_data.id_data); +} + static inline int ocfs2_extent_recs_per_inode(struct super_block *sb) { int size; @@ -566,12 +709,31 @@ static inline int ocfs2_truncate_recs_per_inode(struct super_block *sb) return size / sizeof(struct ocfs2_truncate_rec); } + +static inline u64 ocfs2_backup_super_blkno(struct super_block *sb, int index) +{ + u64 offset = OCFS2_BACKUP_SB_START; + + if (index >= 0 && index < OCFS2_MAX_BACKUP_SUPERBLOCKS) { + offset <<= (2 * index); + offset >>= sb->s_blocksize_bits; + return offset; + } + + return 0; + +} #else static inline int ocfs2_fast_symlink_chars(int blocksize) { return blocksize - offsetof(struct ocfs2_dinode, id2.i_symlink); } +static inline int ocfs2_max_inline_data(int blocksize) +{ + return blocksize - offsetof(struct ocfs2_dinode, id2.i_data.id_data); +} + static inline int ocfs2_extent_recs_per_inode(int blocksize) { int size; @@ -631,6 +793,19 @@ static inline int ocfs2_truncate_recs_per_inode(int blocksize) return size / sizeof(struct ocfs2_truncate_rec); } + +static inline uint64_t ocfs2_backup_super_blkno(int blocksize, int index) +{ + uint64_t offset = OCFS2_BACKUP_SB_START; + + if (index >= 0 && index < OCFS2_MAX_BACKUP_SUPERBLOCKS) { + offset <<= (2 * index); + offset /= blocksize; + return offset; + } + + return 0; +} #endif /* __KERNEL__ */