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Btrfs: add owner and type fields to the extents aand block headers

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Signed-off-by: Chris Mason <chris.mason@oracle.com>
This commit is contained in:
Chris Mason
2007-04-20 20:23:12 -04:00
committed by David Woodhouse
parent 33ade1f826
commit 4d77567309
5 changed files with 65 additions and 14 deletions
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45
fs/btrfs/ctree.h
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@@ -62,6 +62,7 @@ struct btrfs_header {
u8 fsid[16]; /* FS specific uuid */
__le64 blocknr; /* which block this node is supposed to live in */
__le64 generation;
__le64 owner;
__le16 nritems;
__le16 flags;
u8 level;
@@ -151,12 +152,17 @@ struct btrfs_path {
int slots[BTRFS_MAX_LEVEL];
};
/* values for the type field in btrfs_extent_item */
#define BTRFS_EXTENT_TREE 1
#define BTRFS_EXTENT_FILE 2
/*
* items in the extent btree are used to record the objectid of the
* owner of the block and the number of references
*/
struct btrfs_extent_item {
__le32 refs;
__le64 owner;
u8 type;
} __attribute__ ((__packed__));
struct btrfs_inode_timespec {
@@ -473,11 +479,32 @@ static inline void btrfs_set_extent_refs(struct btrfs_extent_item *ei, u32 val)
ei->refs = cpu_to_le32(val);
}
static inline u64 btrfs_extent_owner(struct btrfs_extent_item *ei)
{
return le64_to_cpu(ei->owner);
}
static inline void btrfs_set_extent_owner(struct btrfs_extent_item *ei, u64 val)
{
ei->owner = cpu_to_le64(val);
}
static inline u8 btrfs_extent_type(struct btrfs_extent_item *ei)
{
return ei->type;
}
static inline void btrfs_set_extent_type(struct btrfs_extent_item *ei, u8 val)
{
ei->type = val;
}
static inline u64 btrfs_node_blockptr(struct btrfs_node *n, int nr)
{
return le64_to_cpu(n->ptrs[nr].blockptr);
}
static inline void btrfs_set_node_blockptr(struct btrfs_node *n, int nr,
u64 val)
{
@@ -636,6 +663,17 @@ static inline void btrfs_set_header_generation(struct btrfs_header *h,
h->generation = cpu_to_le64(val);
}
static inline u64 btrfs_header_owner(struct btrfs_header *h)
{
return le64_to_cpu(h->owner);
}
static inline void btrfs_set_header_owner(struct btrfs_header *h,
u64 val)
{
h->owner = cpu_to_le64(val);
}
static inline u16 btrfs_header_nritems(struct btrfs_header *h)
{
return le16_to_cpu(h->nritems);
@@ -996,9 +1034,10 @@ int btrfs_inc_root_ref(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
struct buffer_head *btrfs_alloc_free_block(struct btrfs_trans_handle *trans,
struct btrfs_root *root);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans, struct btrfs_root
*root, u64 num_blocks, u64 search_start, u64
search_end, struct btrfs_key *ins);
int btrfs_alloc_extent(struct btrfs_trans_handle *trans,
struct btrfs_root *root, u64 owner,
u8 type, u64 num_blocks, u64 search_start,
u64 search_end, struct btrfs_key *ins);
int btrfs_inc_ref(struct btrfs_trans_handle *trans, struct btrfs_root *root,
struct buffer_head *buf);
int btrfs_free_extent(struct btrfs_trans_handle *trans, struct btrfs_root