xfs_alloc.h File Reference

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Data Structures
struct	xfs_alloc_arg

Macros
#define	XFS_ALLOCTYPE_ANY_AG   0x01 /* allocate anywhere, use rotor */
#define	XFS_ALLOCTYPE_FIRST_AG   0x02 /* ... start at ag 0 */
#define	XFS_ALLOCTYPE_START_AG   0x04 /* anywhere, start in this a.g. */
#define	XFS_ALLOCTYPE_THIS_AG   0x08 /* anywhere in this a.g. */
#define	XFS_ALLOCTYPE_START_BNO   0x10 /* near this block else anywhere */
#define	XFS_ALLOCTYPE_NEAR_BNO   0x20 /* in this a.g. and near this block */
#define	XFS_ALLOCTYPE_THIS_BNO   0x40 /* at exactly this block */
#define	XFS_ALLOC_TYPES
#define	XFS_ALLOC_FLAG_TRYLOCK   0x00000001 /* use trylock for buffer locking */
#define	XFS_ALLOC_FLAG_FREEING   0x00000002 /* indicate caller is freeing extents*/
#define	XFS_ALLOC_SET_ASIDE(mp)   (4 + ((mp)->m_sb.sb_agcount * 4))
#define	XFS_ALLOC_AG_MAX_USABLE(mp)   ((mp)->m_sb.sb_agblocks - XFS_BB_TO_FSB(mp, XFS_FSS_TO_BB(mp, 4)) - 7)
#define	XFS_ALLOC_USERDATA   1 /* allocation is for user data*/
#define	XFS_ALLOC_INITIAL_USER_DATA   2 /* special case start of file */

Typedefs
typedef unsigned int	xfs_alloctype_t
typedef struct xfs_alloc_arg	xfs_alloc_arg_t

Functions
xfs_extlen_t	xfs_alloc_longest_free_extent (struct xfs_mount *mp, struct xfs_perag *pag)
void	xfs_alloc_compute_maxlevels (struct xfs_mount *mp)
int	xfs_alloc_get_freelist (struct xfs_trans *tp, struct xfs_buf *agbp, xfs_agblock_t *bnop, int btreeblk)
void	xfs_alloc_log_agf (struct xfs_trans *tp, struct xfs_buf *bp, int fields)
int	xfs_alloc_pagf_init (struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, int flags)
int	xfs_alloc_put_freelist (struct xfs_trans *tp, struct xfs_buf *agbp, struct xfs_buf *agflbp, xfs_agblock_t bno, int btreeblk)
int	xfs_alloc_read_agf (struct xfs_mount *mp, struct xfs_trans *tp, xfs_agnumber_t agno, int flags, struct xfs_buf **bpp)
int	xfs_alloc_vextent (xfs_alloc_arg_t *args)
int	xfs_free_extent (struct xfs_trans *tp, xfs_fsblock_t bno, xfs_extlen_t len)
int	xfs_alloc_lookup_le (struct xfs_btree_cur *cur, xfs_agblock_t bno, xfs_extlen_t len, int *stat)
int	xfs_alloc_lookup_ge (struct xfs_btree_cur *cur, xfs_agblock_t bno, xfs_extlen_t len, int *stat)
int	xfs_alloc_get_rec (struct xfs_btree_cur *cur, xfs_agblock_t *bno, xfs_extlen_t *len, int *stat)

Variables
struct workqueue_struct *	xfs_alloc_wq

Macro Definition Documentation

#define XFS_ALLOC_AG_MAX_USABLE

(

mp

)

((mp)->m_sb.sb_agblocks - XFS_BB_TO_FSB(mp, XFS_FSS_TO_BB(mp, 4)) - 7)

Definition at line 90 of file xfs_alloc.h.

#define XFS_ALLOC_FLAG_FREEING   0x00000002 /* indicate caller is freeing extents*/

Definition at line 56 of file xfs_alloc.h.

#define XFS_ALLOC_FLAG_TRYLOCK   0x00000001 /* use trylock for buffer locking */

Definition at line 55 of file xfs_alloc.h.

#define XFS_ALLOC_INITIAL_USER_DATA   2 /* special case start of file */

Definition at line 129 of file xfs_alloc.h.

#define XFS_ALLOC_SET_ASIDE

(

mp

)

(4 + ((mp)->m_sb.sb_agcount * 4))

Definition at line 76 of file xfs_alloc.h.

#define XFS_ALLOC_TYPES

Value:

{ XFS_ALLOCTYPE_ANY_AG,     "ANY_AG" }, \
    { XFS_ALLOCTYPE_FIRST_AG,   "FIRST_AG" }, \
    { XFS_ALLOCTYPE_START_AG,   "START_AG" }, \
    { XFS_ALLOCTYPE_THIS_AG,    "THIS_AG" }, \
    { XFS_ALLOCTYPE_START_BNO,  "START_BNO" }, \
    { XFS_ALLOCTYPE_NEAR_BNO,   "NEAR_BNO" }, \
    { XFS_ALLOCTYPE_THIS_BNO,   "THIS_BNO" }

Definition at line 43 of file xfs_alloc.h.

#define XFS_ALLOC_USERDATA   1 /* allocation is for user data*/

Definition at line 128 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_ANY_AG   0x01 /* allocate anywhere, use rotor */

Definition at line 32 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_FIRST_AG   0x02 /* ... start at ag 0 */

Definition at line 33 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_NEAR_BNO   0x20 /* in this a.g. and near this block */

Definition at line 37 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_START_AG   0x04 /* anywhere, start in this a.g. */

Definition at line 34 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_START_BNO   0x10 /* near this block else anywhere */

Definition at line 36 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_THIS_AG   0x08 /* anywhere in this a.g. */

Definition at line 35 of file xfs_alloc.h.

#define XFS_ALLOCTYPE_THIS_BNO   0x40 /* at exactly this block */

Definition at line 38 of file xfs_alloc.h.

Typedef Documentation

typedef struct xfs_alloc_arg xfs_alloc_arg_t

typedef unsigned int xfs_alloctype_t

Definition at line 41 of file xfs_alloc.h.

Function Documentation

void xfs_alloc_compute_maxlevels

(

struct xfs_mount *

mp

)

int xfs_alloc_get_freelist	(	struct xfs_trans *	tp,
		struct xfs_buf *	agbp,
		xfs_agblock_t *	bnop,
		int	btreeblk
	)

int xfs_alloc_get_rec	(	struct xfs_btree_cur *	cur,
		xfs_agblock_t *	bno,
		xfs_extlen_t *	len,
		int *	stat
	)

Definition at line 120 of file xfs_alloc.c.

void xfs_alloc_log_agf	(	struct xfs_trans *	tp,
		struct xfs_buf *	bp,
		int	fields
	)

xfs_extlen_t xfs_alloc_longest_free_extent	(	struct xfs_mount *	mp,
		struct xfs_perag *	pag
	)

Definition at line 1729 of file xfs_alloc.c.

int xfs_alloc_lookup_ge	(	struct xfs_btree_cur *	cur,
		xfs_agblock_t	bno,
		xfs_extlen_t	len,
		int *	stat
	)

Definition at line 71 of file xfs_alloc.c.

int xfs_alloc_lookup_le	(	struct xfs_btree_cur *	cur,
		xfs_agblock_t	bno,
		xfs_extlen_t	len,
		int *	stat
	)

Definition at line 87 of file xfs_alloc.c.

int xfs_alloc_pagf_init	(	struct xfs_mount *	mp,
		struct xfs_trans *	tp,
		xfs_agnumber_t	agno,
		int	flags
	)

int xfs_alloc_put_freelist	(	struct xfs_trans *	tp,
		struct xfs_buf *	agbp,
		struct xfs_buf *	agflbp,
		xfs_agblock_t	bno,
		int	btreeblk
	)

int xfs_alloc_read_agf	(	struct xfs_mount *	mp,
		struct xfs_trans *	tp,
		xfs_agnumber_t	agno,
		int	flags,
		struct xfs_buf **	bpp
	)

Definition at line 2151 of file xfs_alloc.c.

int xfs_alloc_vextent

(

xfs_alloc_arg_t *

args

)

Definition at line 2211 of file xfs_alloc.c.

int xfs_free_extent	(	struct xfs_trans *	tp,
		xfs_fsblock_t	bno,
		xfs_extlen_t	len
	)

Variable Documentation

struct workqueue_struct* xfs_alloc_wq

Definition at line 38 of file xfs_alloc.c.