xfs_alloc_btree.h File Reference

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Data Structures
struct	xfs_alloc_rec
struct	xfs_alloc_rec_incore

Macros
#define	XFS_ABTB_MAGIC   0x41425442 /* 'ABTB' for bno tree */
#define	XFS_ABTC_MAGIC   0x41425443 /* 'ABTC' for cnt tree */
#define	XFS_BNO_BLOCK(mp)   ((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))
#define	XFS_CNT_BLOCK(mp)   ((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))
#define	XFS_ALLOC_BLOCK_LEN(mp)   XFS_BTREE_SBLOCK_LEN
#define	XFS_ALLOC_REC_ADDR(mp, block, index)
#define	XFS_ALLOC_KEY_ADDR(mp, block, index)
#define	XFS_ALLOC_PTR_ADDR(mp, block, index, maxrecs)

Typedefs
typedef struct xfs_alloc_rec	xfs_alloc_rec_t
typedef struct xfs_alloc_rec	xfs_alloc_key_t
typedef struct xfs_alloc_rec_incore	xfs_alloc_rec_incore_t
typedef __be32	xfs_alloc_ptr_t

Functions
struct xfs_btree_cur *	xfs_allocbt_init_cursor (struct xfs_mount *, struct xfs_trans *, struct xfs_buf *, xfs_agnumber_t, xfs_btnum_t)
int	xfs_allocbt_maxrecs (struct xfs_mount *, int, int)

Macro Definition Documentation

#define XFS_ABTB_MAGIC   0x41425442 /* 'ABTB' for bno tree */

Definition at line 34 of file xfs_alloc_btree.h.

#define XFS_ABTC_MAGIC   0x41425443 /* 'ABTC' for cnt tree */

Definition at line 35 of file xfs_alloc_btree.h.

#define XFS_ALLOC_BLOCK_LEN

(

mp

)

XFS_BTREE_SBLOCK_LEN

Definition at line 65 of file xfs_alloc_btree.h.

#define XFS_ALLOC_KEY_ADDR	(		mp,
			block,
			index
	)

Value:

((xfs_alloc_key_t *) \
        ((char *)(block) + \
         XFS_ALLOC_BLOCK_LEN(mp) + \
         ((index) - 1) * sizeof(xfs_alloc_key_t)))

Definition at line 78 of file xfs_alloc_btree.h.

#define XFS_ALLOC_PTR_ADDR	(		mp,
			block,
			index,
			maxrecs
	)

Value:

((xfs_alloc_ptr_t *) \
        ((char *)(block) + \
         XFS_ALLOC_BLOCK_LEN(mp) + \
         (maxrecs) * sizeof(xfs_alloc_key_t) + \
         ((index) - 1) * sizeof(xfs_alloc_ptr_t)))

Definition at line 84 of file xfs_alloc_btree.h.

#define XFS_ALLOC_REC_ADDR	(		mp,
			block,
			index
	)

Value:

((xfs_alloc_rec_t *) \
        ((char *)(block) + \
         XFS_ALLOC_BLOCK_LEN(mp) + \
         (((index) - 1) * sizeof(xfs_alloc_rec_t))))

Definition at line 72 of file xfs_alloc_btree.h.

#define XFS_BNO_BLOCK

(

mp

)

((xfs_agblock_t)(XFS_AGFL_BLOCK(mp) + 1))

Definition at line 57 of file xfs_alloc_btree.h.

#define XFS_CNT_BLOCK

(

mp

)

((xfs_agblock_t)(XFS_BNO_BLOCK(mp) + 1))

Definition at line 58 of file xfs_alloc_btree.h.

Typedef Documentation

typedef struct xfs_alloc_rec xfs_alloc_key_t

typedef __be32 xfs_alloc_ptr_t

Definition at line 51 of file xfs_alloc_btree.h.

typedef struct xfs_alloc_rec_incore xfs_alloc_rec_incore_t

typedef struct xfs_alloc_rec xfs_alloc_rec_t

Function Documentation

struct xfs_btree_cur* xfs_allocbt_init_cursor ( struct xfs_mount *  , struct xfs_trans *  , struct xfs_buf *  , xfs_agnumber_t  , xfs_btnum_t    )

read

Definition at line 340 of file xfs_alloc_btree.c.

int xfs_allocbt_maxrecs	(	struct xfs_mount *	,
		int	,
		int
	)

Definition at line 377 of file xfs_alloc_btree.c.