Btrfs: start of support for many FS volumes
Signed-off-by: Chris Mason <chris.mason@oracle.com>
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 6d40758..1ff5b99 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3,6 +3,7 @@
#include <linux/fs.h>
#include <linux/buffer_head.h>
+#include <linux/kobject.h>
#include "bit-radix.h"
struct btrfs_trans_handle;
@@ -183,13 +184,15 @@
} __attribute__ ((__packed__));
struct btrfs_dir_item {
- __le64 objectid;
+ struct btrfs_disk_key location;
__le16 flags;
__le16 name_len;
u8 type;
} __attribute__ ((__packed__));
struct btrfs_root_item {
+ struct btrfs_inode_item inode;
+ __le64 root_dirid;
__le64 blocknr;
__le32 flags;
__le64 block_limit;
@@ -249,6 +252,7 @@
struct mutex fs_mutex;
struct crypto_hash *hash_tfm;
spinlock_t hash_lock;
+ struct kobject kobj;
};
/*
@@ -504,16 +508,6 @@
item->size = cpu_to_le16(val);
}
-static inline u64 btrfs_dir_objectid(struct btrfs_dir_item *d)
-{
- return le64_to_cpu(d->objectid);
-}
-
-static inline void btrfs_set_dir_objectid(struct btrfs_dir_item *d, u64 val)
-{
- d->objectid = cpu_to_le64(val);
-}
-
static inline u16 btrfs_dir_flags(struct btrfs_dir_item *d)
{
return le16_to_cpu(d->flags);
@@ -724,6 +718,16 @@
item->blocknr = cpu_to_le64(val);
}
+static inline u64 btrfs_root_dirid(struct btrfs_root_item *item)
+{
+ return le64_to_cpu(item->root_dirid);
+}
+
+static inline void btrfs_set_root_dirid(struct btrfs_root_item *item, u64 val)
+{
+ item->root_dirid = cpu_to_le64(val);
+}
+
static inline u32 btrfs_root_refs(struct btrfs_root_item *item)
{
return le32_to_cpu(item->refs);
@@ -950,8 +954,8 @@
btrfs_root_item *item, struct btrfs_key *key);
/* dir-item.c */
int btrfs_insert_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, const char *name, int name_len, u64 dir, u64
- objectid, u8 type);
+ *root, const char *name, int name_len, u64 dir,
+ struct btrfs_key *location, u8 type);
int btrfs_lookup_dir_item(struct btrfs_trans_handle *trans, struct btrfs_root
*root, struct btrfs_path *path, u64 dir,
const char *name, int name_len, int mod);
@@ -978,7 +982,8 @@
*root, u64 objectid, struct btrfs_inode_item
*inode_item);
int btrfs_lookup_inode(struct btrfs_trans_handle *trans, struct btrfs_root
- *root, struct btrfs_path *path, u64 objectid, int mod);
+ *root, struct btrfs_path *path,
+ struct btrfs_key *location, int mod);
/* file-item.c */
int btrfs_alloc_file_extent(struct btrfs_trans_handle *trans,
@@ -997,4 +1002,7 @@
int btrfs_csum_verify_file_block(struct btrfs_root *root,
u64 objectid, u64 offset,
char *data, size_t len);
+/* super.c */
+extern struct subsystem btrfs_subsys;
+
#endif