diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
-rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 82 |
1 files changed, 58 insertions, 24 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 3eff7c321d43..8626c5a81aad 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -10,6 +10,7 @@ struct xfs_buf; struct xfs_inode; struct xfs_mount; struct xfs_trans; +struct xfs_ifork; extern kmem_zone_t *xfs_btree_cur_zone; @@ -177,15 +178,37 @@ union xfs_btree_irec { struct xfs_refcount_irec rc; }; -/* Per-AG btree private information. */ -union xfs_btree_cur_private { - struct { - unsigned long nr_ops; /* # record updates */ - int shape_changes; /* # of extent splits */ - } refc; - struct { - bool active; /* allocation cursor state */ - } abt; +/* Per-AG btree information. */ +struct xfs_btree_cur_ag { + union { + struct xfs_buf *agbp; + struct xbtree_afakeroot *afake; /* for staging cursor */ + }; + xfs_agnumber_t agno; + union { + struct { + unsigned long nr_ops; /* # record updates */ + int shape_changes; /* # of extent splits */ + } refc; + struct { + bool active; /* allocation cursor state */ + } abt; + }; +}; + +/* Btree-in-inode cursor information */ +struct xfs_btree_cur_ino { + struct xfs_inode *ip; + struct xbtree_ifakeroot *ifake; /* for staging cursor */ + int allocated; + short forksize; + char whichfork; + char flags; +/* We are converting a delalloc reservation */ +#define XFS_BTCUR_BMBT_WASDEL (1 << 0) + +/* For extent swap, ignore owner check in verifier */ +#define XFS_BTCUR_BMBT_INVALID_OWNER (1 << 1) }; /* @@ -209,21 +232,9 @@ typedef struct xfs_btree_cur xfs_btnum_t bc_btnum; /* identifies which btree type */ int bc_statoff; /* offset of btre stats array */ union { - struct { /* needed for BNO, CNT, INO */ - struct xfs_buf *agbp; /* agf/agi buffer pointer */ - xfs_agnumber_t agno; /* ag number */ - union xfs_btree_cur_private priv; - } a; - struct { /* needed for BMAP */ - struct xfs_inode *ip; /* pointer to our inode */ - int allocated; /* count of alloced */ - short forksize; /* fork's inode space */ - char whichfork; /* data or attr fork */ - char flags; /* flags */ -#define XFS_BTCUR_BPRV_WASDEL (1<<0) /* was delayed */ -#define XFS_BTCUR_BPRV_INVALID_OWNER (1<<1) /* for ext swap */ - } b; - } bc_private; /* per-btree type data */ + struct xfs_btree_cur_ag bc_ag; + struct xfs_btree_cur_ino bc_ino; + }; } xfs_btree_cur_t; /* cursor flags */ @@ -232,6 +243,12 @@ typedef struct xfs_btree_cur #define XFS_BTREE_LASTREC_UPDATE (1<<2) /* track last rec externally */ #define XFS_BTREE_CRC_BLOCKS (1<<3) /* uses extended btree blocks */ #define XFS_BTREE_OVERLAPPING (1<<4) /* overlapping intervals */ +/* + * The root of this btree is a fakeroot structure so that we can stage a btree + * rebuild without leaving it accessible via primary metadata. The ops struct + * is dynamically allocated and must be freed when the cursor is deleted. + */ +#define XFS_BTREE_STAGING (1<<5) #define XFS_BTREE_NOERROR 0 @@ -494,6 +511,7 @@ union xfs_btree_key *xfs_btree_high_key_from_key(struct xfs_btree_cur *cur, int xfs_btree_has_record(struct xfs_btree_cur *cur, union xfs_btree_irec *low, union xfs_btree_irec *high, bool *exists); bool xfs_btree_has_more_records(struct xfs_btree_cur *cur); +struct xfs_ifork *xfs_btree_ifork_ptr(struct xfs_btree_cur *cur); /* Does this cursor point to the last block in the given level? */ static inline bool @@ -512,4 +530,20 @@ xfs_btree_islastblock( return block->bb_u.s.bb_rightsib == cpu_to_be32(NULLAGBLOCK); } +void xfs_btree_set_ptr_null(struct xfs_btree_cur *cur, + union xfs_btree_ptr *ptr); +int xfs_btree_get_buf_block(struct xfs_btree_cur *cur, union xfs_btree_ptr *ptr, + struct xfs_btree_block **block, struct xfs_buf **bpp); +void xfs_btree_set_sibling(struct xfs_btree_cur *cur, + struct xfs_btree_block *block, union xfs_btree_ptr *ptr, + int lr); +void xfs_btree_init_block_cur(struct xfs_btree_cur *cur, + struct xfs_buf *bp, int level, int numrecs); +void xfs_btree_copy_ptrs(struct xfs_btree_cur *cur, + union xfs_btree_ptr *dst_ptr, + const union xfs_btree_ptr *src_ptr, int numptrs); +void xfs_btree_copy_keys(struct xfs_btree_cur *cur, + union xfs_btree_key *dst_key, union xfs_btree_key *src_key, + int numkeys); + #endif /* __XFS_BTREE_H__ */ |