mirror of
https://github.com/torvalds/linux
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e17a5c6f0e
This avoids poking into the internals of the extent list. Also return the number of extents as the return value instead of an additional by reference argument, and make it available to callers outside of xfs_bmap_util.c Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
78 lines
3 KiB
C
78 lines
3 KiB
C
/*
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* Copyright (c) 2000-2006 Silicon Graphics, Inc.
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* All Rights Reserved.
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License as
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* published by the Free Software Foundation.
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*
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* This program is distributed in the hope that it would be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#ifndef __XFS_BMAP_UTIL_H__
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#define __XFS_BMAP_UTIL_H__
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/* Kernel only BMAP related definitions and functions */
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struct xfs_bmbt_irec;
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struct xfs_extent_free_item;
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struct xfs_ifork;
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struct xfs_inode;
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struct xfs_mount;
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struct xfs_trans;
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struct xfs_bmalloca;
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int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
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int xfs_bmap_eof(struct xfs_inode *ip, xfs_fileoff_t endoff,
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int whichfork, int *eof);
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int xfs_bmap_punch_delalloc_range(struct xfs_inode *ip,
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xfs_fileoff_t start_fsb, xfs_fileoff_t length);
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/* bmap to userspace formatter - copy to user & advance pointer */
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typedef int (*xfs_bmap_format_t)(void **, struct getbmapx *);
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int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
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xfs_bmap_format_t formatter, void *arg);
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/* functions in xfs_bmap.c that are only needed by xfs_bmap_util.c */
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int xfs_bmap_extsize_align(struct xfs_mount *mp, struct xfs_bmbt_irec *gotp,
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struct xfs_bmbt_irec *prevp, xfs_extlen_t extsz,
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int rt, int eof, int delay, int convert,
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xfs_fileoff_t *offp, xfs_extlen_t *lenp);
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void xfs_bmap_adjacent(struct xfs_bmalloca *ap);
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int xfs_bmap_last_extent(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork, struct xfs_bmbt_irec *rec,
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int *is_empty);
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/* preallocation and hole punch interface */
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int xfs_alloc_file_space(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len, int alloc_type);
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int xfs_free_file_space(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len);
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int xfs_zero_file_space(struct xfs_inode *ip, xfs_off_t offset,
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xfs_off_t len);
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int xfs_collapse_file_space(struct xfs_inode *, xfs_off_t offset,
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xfs_off_t len);
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int xfs_insert_file_space(struct xfs_inode *, xfs_off_t offset,
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xfs_off_t len);
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/* EOF block manipulation functions */
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bool xfs_can_free_eofblocks(struct xfs_inode *ip, bool force);
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int xfs_free_eofblocks(struct xfs_inode *ip);
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int xfs_swap_extents(struct xfs_inode *ip, struct xfs_inode *tip,
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struct xfs_swapext *sx);
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xfs_daddr_t xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb);
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xfs_extnum_t xfs_bmap_count_leaves(struct xfs_ifork *ifp, xfs_filblks_t *count);
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int xfs_bmap_count_blocks(struct xfs_trans *tp, struct xfs_inode *ip,
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int whichfork, xfs_extnum_t *nextents,
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xfs_filblks_t *count);
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#endif /* __XFS_BMAP_UTIL_H__ */
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