diff options
Diffstat (limited to 'fs/xfs/libxfs/xfs_btree.h')
| -rw-r--r-- | fs/xfs/libxfs/xfs_btree.h | 56 |
1 files changed, 30 insertions, 26 deletions
diff --git a/fs/xfs/libxfs/xfs_btree.h b/fs/xfs/libxfs/xfs_btree.h index 4dbdc659c396..4eaf8517f850 100644 --- a/fs/xfs/libxfs/xfs_btree.h +++ b/fs/xfs/libxfs/xfs_btree.h @@ -106,19 +106,19 @@ struct xfs_btree_ops { /* update btree root pointer */ void (*set_root)(struct xfs_btree_cur *cur, - union xfs_btree_ptr *nptr, int level_change); + const union xfs_btree_ptr *nptr, int level_change); /* block allocation / freeing */ int (*alloc_block)(struct xfs_btree_cur *cur, - union xfs_btree_ptr *start_bno, + const union xfs_btree_ptr *start_bno, union xfs_btree_ptr *new_bno, int *stat); int (*free_block)(struct xfs_btree_cur *cur, struct xfs_buf *bp); /* update last record information */ void (*update_lastrec)(struct xfs_btree_cur *cur, - struct xfs_btree_block *block, - union xfs_btree_rec *rec, + const struct xfs_btree_block *block, + const union xfs_btree_rec *rec, int ptr, int reason); /* records in block/level */ @@ -130,37 +130,37 @@ struct xfs_btree_ops { /* init values of btree structures */ void (*init_key_from_rec)(union xfs_btree_key *key, - union xfs_btree_rec *rec); + const union xfs_btree_rec *rec); void (*init_rec_from_cur)(struct xfs_btree_cur *cur, union xfs_btree_rec *rec); void (*init_ptr_from_cur)(struct xfs_btree_cur *cur, union xfs_btree_ptr *ptr); void (*init_high_key_from_rec)(union xfs_btree_key *key, - union xfs_btree_rec *rec); + const union xfs_btree_rec *rec); /* difference between key value and cursor value */ int64_t (*key_diff)(struct xfs_btree_cur *cur, - union xfs_btree_key *key); + const union xfs_btree_key *key); /* * Difference between key2 and key1 -- positive if key1 > key2, * negative if key1 < key2, and zero if equal. */ int64_t (*diff_two_keys)(struct xfs_btree_cur *cur, - union xfs_btree_key *key1, - union xfs_btree_key *key2); + const union xfs_btree_key *key1, + const union xfs_btree_key *key2); const struct xfs_buf_ops *buf_ops; /* check that k1 is lower than k2 */ int (*keys_inorder)(struct xfs_btree_cur *cur, - union xfs_btree_key *k1, - union xfs_btree_key *k2); + const union xfs_btree_key *k1, + const union xfs_btree_key *k2); /* check that r1 is lower than r2 */ int (*recs_inorder)(struct xfs_btree_cur *cur, - union xfs_btree_rec *r1, - union xfs_btree_rec *r2); + const union xfs_btree_rec *r1, + const union xfs_btree_rec *r2); }; /* @@ -423,7 +423,7 @@ void xfs_btree_log_recs(struct xfs_btree_cur *, struct xfs_buf *, int, int); /* * Helpers. */ -static inline int xfs_btree_get_numrecs(struct xfs_btree_block *block) +static inline int xfs_btree_get_numrecs(const struct xfs_btree_block *block) { return be16_to_cpu(block->bb_numrecs); } @@ -434,7 +434,7 @@ static inline void xfs_btree_set_numrecs(struct xfs_btree_block *block, block->bb_numrecs = cpu_to_be16(numrecs); } -static inline int xfs_btree_get_level(struct xfs_btree_block *block) +static inline int xfs_btree_get_level(const struct xfs_btree_block *block) { return be16_to_cpu(block->bb_level); } @@ -471,10 +471,11 @@ unsigned long long xfs_btree_calc_size(uint *limits, unsigned long long len); * code on its own. */ typedef int (*xfs_btree_query_range_fn)(struct xfs_btree_cur *cur, - union xfs_btree_rec *rec, void *priv); + const union xfs_btree_rec *rec, void *priv); int xfs_btree_query_range(struct xfs_btree_cur *cur, - union xfs_btree_irec *low_rec, union xfs_btree_irec *high_rec, + const union xfs_btree_irec *low_rec, + const union xfs_btree_irec *high_rec, xfs_btree_query_range_fn fn, void *priv); int xfs_btree_query_all(struct xfs_btree_cur *cur, xfs_btree_query_range_fn fn, void *priv); @@ -502,10 +503,11 @@ union xfs_btree_key *xfs_btree_high_key_addr(struct xfs_btree_cur *cur, int n, union xfs_btree_ptr *xfs_btree_ptr_addr(struct xfs_btree_cur *cur, int n, struct xfs_btree_block *block); int xfs_btree_lookup_get_block(struct xfs_btree_cur *cur, int level, - union xfs_btree_ptr *pp, struct xfs_btree_block **blkp); + const union xfs_btree_ptr *pp, struct xfs_btree_block **blkp); struct xfs_btree_block *xfs_btree_get_block(struct xfs_btree_cur *cur, int level, struct xfs_buf **bpp); -bool xfs_btree_ptr_is_null(struct xfs_btree_cur *cur, union xfs_btree_ptr *ptr); +bool xfs_btree_ptr_is_null(struct xfs_btree_cur *cur, + const union xfs_btree_ptr *ptr); int64_t xfs_btree_diff_two_ptrs(struct xfs_btree_cur *cur, const union xfs_btree_ptr *a, const union xfs_btree_ptr *b); @@ -516,8 +518,9 @@ void xfs_btree_get_keys(struct xfs_btree_cur *cur, struct xfs_btree_block *block, union xfs_btree_key *key); union xfs_btree_key *xfs_btree_high_key_from_key(struct xfs_btree_cur *cur, union xfs_btree_key *key); -int xfs_btree_has_record(struct xfs_btree_cur *cur, union xfs_btree_irec *low, - union xfs_btree_irec *high, bool *exists); +int xfs_btree_has_record(struct xfs_btree_cur *cur, + const union xfs_btree_irec *low, + const 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); @@ -540,10 +543,11 @@ xfs_btree_islastblock( 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); +int xfs_btree_get_buf_block(struct xfs_btree_cur *cur, + const 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, + struct xfs_btree_block *block, const 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); @@ -551,7 +555,7 @@ 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); + union xfs_btree_key *dst_key, + const union xfs_btree_key *src_key, int numkeys); #endif /* __XFS_BTREE_H__ */ |