You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
112 lines
4.3 KiB
112 lines
4.3 KiB
/* |
|
* Copyright (c) 2000-2006 Silicon Graphics, Inc. |
|
* All Rights Reserved. |
|
* |
|
* This program is free software; you can redistribute it and/or |
|
* modify it under the terms of the GNU General Public License as |
|
* published by the Free Software Foundation. |
|
* |
|
* This program is distributed in the hope that it would be useful, |
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
|
* GNU General Public License for more details. |
|
* |
|
* You should have received a copy of the GNU General Public License |
|
* along with this program; if not, write the Free Software Foundation, |
|
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
|
*/ |
|
#ifndef __XFS_BMAP_UTIL_H__ |
|
#define __XFS_BMAP_UTIL_H__ |
|
|
|
/* Kernel only BMAP related definitions and functions */ |
|
|
|
struct xfs_bmbt_irec; |
|
struct xfs_bmap_free_item; |
|
struct xfs_ifork; |
|
struct xfs_inode; |
|
struct xfs_mount; |
|
struct xfs_trans; |
|
|
|
/* |
|
* Argument structure for xfs_bmap_alloc. |
|
*/ |
|
struct xfs_bmalloca { |
|
xfs_fsblock_t *firstblock; /* i/o first block allocated */ |
|
struct xfs_bmap_free *flist; /* bmap freelist */ |
|
struct xfs_trans *tp; /* transaction pointer */ |
|
struct xfs_inode *ip; /* incore inode pointer */ |
|
struct xfs_bmbt_irec prev; /* extent before the new one */ |
|
struct xfs_bmbt_irec got; /* extent after, or delayed */ |
|
|
|
xfs_fileoff_t offset; /* offset in file filling in */ |
|
xfs_extlen_t length; /* i/o length asked/allocated */ |
|
xfs_fsblock_t blkno; /* starting block of new extent */ |
|
|
|
struct xfs_btree_cur *cur; /* btree cursor */ |
|
xfs_extnum_t idx; /* current extent index */ |
|
int nallocs;/* number of extents alloc'd */ |
|
int logflags;/* flags for transaction logging */ |
|
|
|
xfs_extlen_t total; /* total blocks needed for xaction */ |
|
xfs_extlen_t minlen; /* minimum allocation size (blocks) */ |
|
xfs_extlen_t minleft; /* amount must be left after alloc */ |
|
bool eof; /* set if allocating past last extent */ |
|
bool wasdel; /* replacing a delayed allocation */ |
|
bool userdata;/* set if is user data */ |
|
bool aeof; /* allocated space at eof */ |
|
bool conv; /* overwriting unwritten extents */ |
|
int flags; |
|
struct completion *done; |
|
struct work_struct work; |
|
int result; |
|
}; |
|
|
|
int xfs_bmap_finish(struct xfs_trans **tp, struct xfs_bmap_free *flist, |
|
int *committed); |
|
int xfs_bmap_rtalloc(struct xfs_bmalloca *ap); |
|
int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff, |
|
int whichfork, int *eof); |
|
int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip, |
|
int whichfork, int *count); |
|
int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip, |
|
xfs_fileoff_t start_fsb, xfs_fileoff_t length); |
|
|
|
/* bmap to userspace formatter - copy to user & advance pointer */ |
|
typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *, int *); |
|
int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv, |
|
xfs_bmap_format_t formatter, void *arg); |
|
|
|
/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */ |
|
void xfs_bmap_del_free(struct xfs_bmap_free *flist, |
|
struct xfs_bmap_free_item *prev, |
|
struct xfs_bmap_free_item *free); |
|
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); |
|
|
|
/* EOF block manipulation functions */ |
|
bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force); |
|
int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip, |
|
bool need_iolock); |
|
|
|
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); |
|
|
|
#endif /* __XFS_BMAP_UTIL_H__ */
|
|
|