#define OCFS2_CLEAR_INCOMPAT_FEATURE(sb,mask) \
OCFS2_SB(sb)->s_feature_incompat &= ~(mask)
-#define OCFS2_FEATURE_COMPAT_SUPP OCFS2_FEATURE_COMPAT_BACKUP_SB
+#define OCFS2_FEATURE_COMPAT_SUPP (OCFS2_FEATURE_COMPAT_BACKUP_SB \
+ | OCFS2_FEATURE_COMPAT_JBD2_SB)
#define OCFS2_FEATURE_INCOMPAT_SUPP (OCFS2_FEATURE_INCOMPAT_LOCAL_MOUNT \
| OCFS2_FEATURE_INCOMPAT_SPARSE_ALLOC \
| OCFS2_FEATURE_INCOMPAT_INLINE_DATA \
| OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP \
- | OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK)
+ | OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK \
+ | OCFS2_FEATURE_INCOMPAT_XATTR)
#define OCFS2_FEATURE_RO_COMPAT_SUPP OCFS2_FEATURE_RO_COMPAT_UNWRITTEN
/*
/* Support for data packed into inode blocks */
#define OCFS2_FEATURE_INCOMPAT_INLINE_DATA 0x0040
-/* Support for the extended slot map */
-#define OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP 0x100
-
-
/*
* Support for alternate, userspace cluster stacks. If set, the superblock
* field s_cluster_info contains a tag for the alternate stack in use as
*/
#define OCFS2_FEATURE_INCOMPAT_USERSPACE_STACK 0x0080
+/* Support for the extended slot map */
+#define OCFS2_FEATURE_INCOMPAT_EXTENDED_SLOT_MAP 0x100
+
+/* Support for extended attributes */
+#define OCFS2_FEATURE_INCOMPAT_XATTR 0x0200
+
/*
* backup superblock flag is used to indicate that this volume
* has backup superblocks.
*/
#define OCFS2_FEATURE_COMPAT_BACKUP_SB 0x0001
+/*
+ * The filesystem will correctly handle journal feature bits.
+ */
+#define OCFS2_FEATURE_COMPAT_JBD2_SB 0x0002
+
/*
* Unwritten extents support.
*/
/*40*/ __le16 s_max_slots; /* Max number of simultaneous mounts
before tunefs required */
__le16 s_tunefs_flag;
- __le32 s_reserved1;
+ __le32 s_uuid_hash; /* hash value of uuid */
__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. */
/*A0*/ struct ocfs2_cluster_info s_cluster_info; /* Selected userspace
stack. Only valid
with INCOMPAT flag. */
-/*B8*/ __le64 s_reserved2[17]; /* Fill out superblock */
+/*B8*/ __le16 s_xattr_inline_size; /* extended attribute inline size
+ for this fs*/
+ __le16 s_reserved0;
+ __le32 s_reserved1;
+/*C0*/ __le64 s_reserved2[16]; /* Fill out superblock */
/*140*/
/*
*/
struct ocfs2_xattr_entry {
__le32 xe_name_hash; /* hash value of xattr prefix+suffix. */
- __le16 xe_name_offset; /* byte offset from the 1st etnry in the local
+ __le16 xe_name_offset; /* byte offset from the 1st entry in the
local xattr storage(inode, xattr block or
xattr bucket). */
__u8 xe_name_len; /* xattr name len, does't include prefix. */
- __u8 xe_type; /* the low 7 bits indicates the name prefix's
- * type and the highest 1 bits indicate whether
+ __u8 xe_type; /* the low 7 bits indicate the name prefix
+ * type and the highest bit indicates whether
* the EA is stored in the local storage. */
__le64 xe_value_size; /* real xattr value length. */
};
__le16 xh_count; /* contains the count of how
many records are in the
local xattr storage. */
- __le16 xh_reserved1;
- __le32 xh_reserved2;
+ __le16 xh_free_start; /* current offset for storing
+ xattr. */
+ __le16 xh_name_value_len; /* total length of name/value
+ length in this bucket. */
+ __le16 xh_num_buckets; /* Number of xattr buckets
+ in this extent record,
+ only valid in the first
+ bucket. */
__le64 xh_csum;
struct ocfs2_xattr_entry xh_entries[0]; /* xattr entry list. */
};
/*
* On disk structure for xattr value root.
*
- * It is used when one extended attribute's size is larger, and we will save it
- * in an outside cluster. It will stored in a b-tree like file content.
+ * When an xattr's value is large enough, it is stored in an external
+ * b-tree like file data. The xattr value root points to this structure.
*/
struct ocfs2_xattr_value_root {
/*00*/ __le32 xr_clusters; /* clusters covered by xattr value. */
/*10*/ struct ocfs2_extent_list xt_list; /* Extent record list */
};
-#define OCFS2_XATTR_INDEXED 0x1
+#define OCFS2_XATTR_INDEXED 0x1
+#define OCFS2_HASH_SHIFT 5
+#define OCFS2_XATTR_ROUND 3
+#define OCFS2_XATTR_SIZE(size) (((size) + OCFS2_XATTR_ROUND) & \
+ ~(OCFS2_XATTR_ROUND))
+
+#define OCFS2_XATTR_BUCKET_SIZE 4096
+#define OCFS2_XATTR_MAX_BLOCKS_PER_BUCKET (OCFS2_XATTR_BUCKET_SIZE \
+ / OCFS2_MIN_BLOCKSIZE)
/*
* On disk structure for xattr block.
return 0;
}
+
+static inline u16 ocfs2_xattr_recs_per_xb(struct super_block *sb)
+{
+ int size;
+
+ size = sb->s_blocksize -
+ offsetof(struct ocfs2_xattr_block,
+ xb_attrs.xb_root.xt_list.l_recs);
+
+ return size / sizeof(struct ocfs2_extent_rec);
+}
#else
static inline int ocfs2_fast_symlink_chars(int blocksize)
{
return 0;
}
+
+static inline int ocfs2_xattr_recs_per_xb(int blocksize)
+{
+ int size;
+
+ size = blocksize -
+ offsetof(struct ocfs2_xattr_block,
+ xb_attrs.xb_root.xt_list.l_recs);
+
+ return size / sizeof(struct ocfs2_extent_rec);
+}
#endif /* __KERNEL__ */