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- /*
- * 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 */
- char eof; /* set if allocating past last extent */
- char wasdel; /* replacing a delayed allocation */
- char userdata;/* set if is user data */
- char aeof; /* allocated space at eof */
- char conv; /* overwriting unwritten extents */
- char stack_switch;
- 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_bmapi_allocate(struct xfs_bmalloca *args);
- int __xfs_bmapi_allocate(struct xfs_bmalloca *args);
- 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_change_file_space(struct xfs_inode *ip, int cmd,
- xfs_flock64_t *bf, xfs_off_t offset,
- int attr_flags);
- /* 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__ */
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