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https://github.com/torvalds/linux
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232b51948b
Instead of passing in a formatter callback allocate the bmap buffer in the caller and process the entries there. Additionally replace the in-kernel buffer with a new much smaller structure, and unify the implementation of the different ioctls in a single function. Signed-off-by: Christoph Hellwig <hch@lst.de> Reviewed-by: Brian Foster <bfoster@redhat.com> Reviewed-by: Darrick J. Wong <darrick.wong@oracle.com> Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
95 lines
3.3 KiB
C
95 lines
3.3 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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#ifdef CONFIG_XFS_RT
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int xfs_bmap_rtalloc(struct xfs_bmalloca *ap);
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#else /* !CONFIG_XFS_RT */
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/*
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* Attempts to allocate RT extents when RT is disable indicates corruption and
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* should trigger a shutdown.
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*/
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static inline int
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xfs_bmap_rtalloc(struct xfs_bmalloca *ap)
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{
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return -EFSCORRUPTED;
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}
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#endif /* CONFIG_XFS_RT */
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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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struct kgetbmap {
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__s64 bmv_offset; /* file offset of segment in blocks */
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__s64 bmv_block; /* starting block (64-bit daddr_t) */
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__s64 bmv_length; /* length of segment, blocks */
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__s32 bmv_oflags; /* output flags */
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};
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int xfs_getbmap(struct xfs_inode *ip, struct getbmapx *bmv,
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struct kgetbmap *out);
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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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