#define __XFS_BTREE_H__
struct xfs_buf;
-struct xfs_bmap_free;
+struct xfs_defer_ops;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;
};
union xfs_btree_key {
- xfs_bmbt_key_t bmbt;
- xfs_bmdr_key_t bmbr; /* bmbt root block */
- xfs_alloc_key_t alloc;
- xfs_inobt_key_t inobt;
+ struct xfs_bmbt_key bmbt;
+ xfs_bmdr_key_t bmbr; /* bmbt root block */
+ xfs_alloc_key_t alloc;
+ struct xfs_inobt_key inobt;
+ struct xfs_rmap_key rmap;
+};
+
+/*
+ * In-core key that holds both low and high keys for overlapped btrees.
+ * The two keys are packed next to each other on disk, so do the same
+ * in memory. Preserve the existing xfs_btree_key as a single key to
+ * avoid the mental model breakage that would happen if we passed a
+ * bigkey into a function that operates on a single key.
+ */
+union xfs_btree_bigkey {
+ struct xfs_bmbt_key bmbt;
+ xfs_bmdr_key_t bmbr; /* bmbt root block */
+ xfs_alloc_key_t alloc;
+ struct xfs_inobt_key inobt;
+ struct {
+ struct xfs_rmap_key rmap;
+ struct xfs_rmap_key rmap_hi;
+ };
};
union xfs_btree_rec {
- xfs_bmbt_rec_t bmbt;
- xfs_bmdr_rec_t bmbr; /* bmbt root block */
- xfs_alloc_rec_t alloc;
- xfs_inobt_rec_t inobt;
+ struct xfs_bmbt_rec bmbt;
+ xfs_bmdr_rec_t bmbr; /* bmbt root block */
+ struct xfs_alloc_rec alloc;
+ struct xfs_inobt_rec inobt;
+ struct xfs_rmap_rec rmap;
};
/*
#define XFS_BTNUM_BMAP ((xfs_btnum_t)XFS_BTNUM_BMAPi)
#define XFS_BTNUM_INO ((xfs_btnum_t)XFS_BTNUM_INOi)
#define XFS_BTNUM_FINO ((xfs_btnum_t)XFS_BTNUM_FINOi)
+#define XFS_BTNUM_RMAP ((xfs_btnum_t)XFS_BTNUM_RMAPi)
/*
* For logging record fields.
case XFS_BTNUM_BMAP: __XFS_BTREE_STATS_INC(__mp, bmbt, stat); break; \
case XFS_BTNUM_INO: __XFS_BTREE_STATS_INC(__mp, ibt, stat); break; \
case XFS_BTNUM_FINO: __XFS_BTREE_STATS_INC(__mp, fibt, stat); break; \
+ case XFS_BTNUM_RMAP: __XFS_BTREE_STATS_INC(__mp, rmap, stat); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)
__XFS_BTREE_STATS_ADD(__mp, ibt, stat, val); break; \
case XFS_BTNUM_FINO: \
__XFS_BTREE_STATS_ADD(__mp, fibt, stat, val); break; \
+ case XFS_BTNUM_RMAP: \
+ __XFS_BTREE_STATS_ADD(__mp, rmap, stat, val); break; \
case XFS_BTNUM_MAX: ASSERT(0); /* fucking gcc */ ; break; \
} \
} while (0)
-#define XFS_BTREE_MAXLEVELS 8 /* max of all btrees */
+#define XFS_BTREE_MAXLEVELS 9 /* max of all btrees */
struct xfs_btree_ops {
/* size of the key and record structures */
/* init values of btree structures */
void (*init_key_from_rec)(union xfs_btree_key *key,
union xfs_btree_rec *rec);
- void (*init_rec_from_key)(union xfs_btree_key *key,
- 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);
/* difference between key value and cursor value */
__int64_t (*key_diff)(struct xfs_btree_cur *cur,
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 struct xfs_buf_ops *buf_ops;
#if defined(DEBUG) || defined(XFS_WARN)
#define LASTREC_DELREC 2
+union xfs_btree_irec {
+ struct xfs_alloc_rec_incore a;
+ struct xfs_bmbt_irec b;
+ struct xfs_inobt_rec_incore i;
+ struct xfs_rmap_irec r;
+};
+
/*
* Btree cursor structure.
* This collects all information needed by the btree code in one place.
struct xfs_mount *bc_mp; /* file system mount struct */
const struct xfs_btree_ops *bc_ops;
uint bc_flags; /* btree features - below */
- union {
- xfs_alloc_rec_incore_t a;
- xfs_bmbt_irec_t b;
- xfs_inobt_rec_incore_t i;
- } bc_rec; /* current insert/search record value */
+ union xfs_btree_irec bc_rec; /* current insert/search record value */
struct xfs_buf *bc_bufs[XFS_BTREE_MAXLEVELS]; /* buf ptr per level */
int bc_ptrs[XFS_BTREE_MAXLEVELS]; /* key/record # */
__uint8_t bc_ra[XFS_BTREE_MAXLEVELS]; /* readahead bits */
union {
struct { /* needed for BNO, CNT, INO */
struct xfs_buf *agbp; /* agf/agi buffer pointer */
+ struct xfs_defer_ops *dfops; /* deferred updates */
xfs_agnumber_t agno; /* ag number */
} a;
struct { /* needed for BMAP */
struct xfs_inode *ip; /* pointer to our inode */
- struct xfs_bmap_free *flist; /* list to free after */
+ struct xfs_defer_ops *dfops; /* deferred updates */
xfs_fsblock_t firstblock; /* 1st blk allocated */
int allocated; /* count of alloced */
short forksize; /* fork's inode space */
#define XFS_BTREE_ROOT_IN_INODE (1<<1) /* root may be variable size */
#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 */
#define XFS_BTREE_NOERROR 0
bool xfs_btree_sblock_v5hdr_verify(struct xfs_buf *bp);
bool xfs_btree_sblock_verify(struct xfs_buf *bp, unsigned int max_recs);
+uint xfs_btree_compute_maxlevels(struct xfs_mount *mp, uint *limits,
+ unsigned long len);
+
+/* return codes */
+#define XFS_BTREE_QUERY_RANGE_CONTINUE 0 /* keep iterating */
+#define XFS_BTREE_QUERY_RANGE_ABORT 1 /* stop iterating */
+typedef int (*xfs_btree_query_range_fn)(struct xfs_btree_cur *cur,
+ 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,
+ xfs_btree_query_range_fn fn, void *priv);
+
+typedef int (*xfs_btree_visit_blocks_fn)(struct xfs_btree_cur *cur, int level,
+ void *data);
+int xfs_btree_visit_blocks(struct xfs_btree_cur *cur,
+ xfs_btree_visit_blocks_fn fn, void *data);
#endif /* __XFS_BTREE_H__ */
projects / cascardo / linux.git / blobdiff