[linux-2.6-block.git] / fs / xfs / xfs_bmap_util.h

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (c) 2000-2006 Silicon Graphics, Inc.
 * All Rights Reserved.
 */
#ifndef __XFS_BMAP_UTIL_H__
#define	__XFS_BMAP_UTIL_H__

/* Kernel only BMAP related definitions and functions */

struct xfs_bmbt_irec;
struct xfs_extent_free_item;
struct xfs_ifork;
struct xfs_inode;
struct xfs_mount;
struct xfs_trans;
struct xfs_bmalloca;

#ifdef CONFIG_XFS_RT
int	xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
#else /* !CONFIG_XFS_RT */
/*
 * Attempts to allocate RT extents when RT is disable indicates corruption and
 * should trigger a shutdown.
 */
static inline int
xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
{
	return -EFSCORRUPTED;
}
#endif /* CONFIG_XFS_RT */

int	xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
		     int whichfork, int *eof);
int	xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
		xfs_fileoff_t start_fsb, xfs_fileoff_t length);

struct kgetbmap {
	__s64		bmv_offset;	/* file offset of segment in blocks */
	__s64		bmv_block;	/* starting block (64-bit daddr_t)  */
	__s64		bmv_length;	/* length of segment, blocks	    */
	__s32		bmv_oflags;	/* output flags */
};
int	xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
		struct kgetbmap *out);

/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
int	xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
			       struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
			       int rt, int eof, int delay, int convert,
			       xfs_fileoff_t *offp, xfs_extlen_t *lenp);
void	xfs_bmap_adjacent(struct xfs_bmalloca *ap);
int	xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
			     int whichfork, struct xfs_bmbt_irec *rec,
			     int *is_empty);

/* preallocation and hole punch interface */
int	xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
			     xfs_off_t len, int alloc_type);
int	xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
			    xfs_off_t len);
int	xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
			    xfs_off_t len);
int	xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
				xfs_off_t len);
int	xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
				xfs_off_t len);

/* EOF block manipulation functions */
bool	xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
int	xfs_free_eofblocks(struct xfs_inode *ip);

int	xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
			 struct xfs_swapext *sx);

xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);

xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
			  int whichfork, xfs_extnum_t *nextents,
			  xfs_filblks_t *count);

int	xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
			      xfs_off_t len);

#endif	/* __XFS_BMAP_UTIL_H__ */
Commit	Line	Data
0b61f8a4	1	// SPDX-License-Identifier: GPL-2.0
68988114 DC	2	/*
	3	* Copyright (c) 2000-2006 Silicon Graphics, Inc.
	4	* All Rights Reserved.
68988114 DC	5	*/
	6	#ifndef __XFS_BMAP_UTIL_H__
	7	#define __XFS_BMAP_UTIL_H__
	8
	9	/* Kernel only BMAP related definitions and functions */
	10
	11	struct xfs_bmbt_irec;
310a75a3	12	struct xfs_extent_free_item;
68988114 DC	13	struct xfs_ifork;
	14	struct xfs_inode;
	15	struct xfs_mount;
	16	struct xfs_trans;
9799b438	17	struct xfs_bmalloca;
68988114	18
bb9c2e54	19	#ifdef CONFIG_XFS_RT
68988114	20	int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
bb9c2e54 DC	21	#else /* !CONFIG_XFS_RT */
	22	/*
	23	* Attempts to allocate RT extents when RT is disable indicates corruption and
	24	* should trigger a shutdown.
	25	*/
	26	static inline int
	27	xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
	28	{
	29	return -EFSCORRUPTED;
	30	}
	31	#endif /* CONFIG_XFS_RT */
	32
68988114 DC	33	int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
68988114 DC	34	int whichfork, int *eof);
68988114 DC	35	int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
	36	xfs_fileoff_t start_fsb, xfs_fileoff_t length);
	37
232b5194 CH	38	struct kgetbmap {
	39	__s64 bmv_offset; /* file offset of segment in blocks */
	40	__s64 bmv_block; /* starting block (64-bit daddr_t) */
	41	__s64 bmv_length; /* length of segment, blocks */
	42	__s32 bmv_oflags; /* output flags */
	43	};
68988114	44	int xfs_getbmap(struct xfs_inode ip, struct getbmapx bmv,
232b5194	45	struct kgetbmap *out);
68988114 DC	46
68988114 DC	47	/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
68988114 DC	48	int xfs_bmap_extsize_align(struct xfs_mount mp, struct xfs_bmbt_irec gotp,
	49	struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
	50	int rt, int eof, int delay, int convert,
	51	xfs_fileoff_t offp, xfs_extlen_t lenp);
	52	void xfs_bmap_adjacent(struct xfs_bmalloca *ap);
	53	int xfs_bmap_last_extent(struct xfs_trans tp, struct xfs_inode ip,
	54	int whichfork, struct xfs_bmbt_irec *rec,
	55	int *is_empty);
	56
c24b5dfa	57	/* preallocation and hole punch interface */
83aee9e4 CH	58	int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
	59	xfs_off_t len, int alloc_type);
	60	int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
	61	xfs_off_t len);
865e9446 CH	62	int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
865e9446 CH	63	xfs_off_t len);
e1d8fb88 NJ	64	int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
e1d8fb88 NJ	65	xfs_off_t len);
a904b1ca NJ	66	int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
a904b1ca NJ	67	xfs_off_t len);
c24b5dfa DC	68
	69	/* EOF block manipulation functions */
	70	bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
a36b9261	71	int xfs_free_eofblocks(struct xfs_inode *ip);
c24b5dfa	72
a133d952 DC	73	int xfs_swap_extents(struct xfs_inode ip, struct xfs_inode tip,
	74	struct xfs_swapext *sx);
	75
68988114 DC	76	xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
68988114 DC	77
e17a5c6f	78	xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork ifp, xfs_filblks_t count);
e7f5d5ca DW	79	int xfs_bmap_count_blocks(struct xfs_trans tp, struct xfs_inode ip,
	80	int whichfork, xfs_extnum_t *nextents,
	81	xfs_filblks_t *count);
	82
2c307174 DC	83	int xfs_flush_unmap_range(struct xfs_inode *ip, xfs_off_t offset,
	84	xfs_off_t len);
	85
68988114	86	#endif /* __XFS_BMAP_UTIL_H__ */