89 строки
2.5 KiB
C
89 строки
2.5 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_RW_H__
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#define __XFS_RW_H__
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struct xfs_buf;
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struct xfs_inode;
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struct xfs_mount;
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/*
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* Convert the given file system block to a disk block.
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* We have to treat it differently based on whether the
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* file is a real time file or not, because the bmap code
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* does.
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*/
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#define XFS_FSB_TO_DB(ip,fsb) xfs_fsb_to_db(ip,fsb)
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static inline xfs_daddr_t
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xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb)
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{
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return (XFS_IS_REALTIME_INODE(ip) ? \
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(xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \
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XFS_FSB_TO_DADDR((ip)->i_mount, (fsb)));
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}
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/*
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* Flags for xfs_free_eofblocks
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*/
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#define XFS_FREE_EOF_LOCK (1<<0)
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#define XFS_FREE_EOF_NOLOCK (1<<1)
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/*
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* helper function to extract extent size hint from inode
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*/
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STATIC_INLINE xfs_extlen_t
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xfs_get_extsz_hint(
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xfs_inode_t *ip)
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{
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xfs_extlen_t extsz;
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if (unlikely(XFS_IS_REALTIME_INODE(ip))) {
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extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
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? ip->i_d.di_extsize
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: ip->i_mount->m_sb.sb_rextsize;
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ASSERT(extsz);
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} else {
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extsz = (ip->i_d.di_flags & XFS_DIFLAG_EXTSIZE)
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? ip->i_d.di_extsize : 0;
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}
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return extsz;
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}
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/*
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* Prototypes for functions in xfs_rw.c.
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*/
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extern int xfs_write_clear_setuid(struct xfs_inode *ip);
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extern int xfs_write_sync_logforce(struct xfs_mount *mp, struct xfs_inode *ip);
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extern int xfs_bwrite(struct xfs_mount *mp, struct xfs_buf *bp);
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extern int xfs_bioerror(struct xfs_buf *bp);
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extern int xfs_bioerror_relse(struct xfs_buf *bp);
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extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp,
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xfs_daddr_t blkno, int len, uint flags,
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struct xfs_buf **bpp);
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extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp,
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xfs_buf_t *bp, xfs_daddr_t blkno);
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/*
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* Prototypes for functions in xfs_vnodeops.c.
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*/
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extern int xfs_free_eofblocks(struct xfs_mount *mp, struct xfs_inode *ip,
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int flags);
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#endif /* __XFS_RW_H__ */
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