1/* 2 * Copyright (c) 2000-2006 Silicon Graphics, Inc. 3 * All Rights Reserved. 4 * 5 * This program is free software; you can redistribute it and/or 6 * modify it under the terms of the GNU General Public License as 7 * published by the Free Software Foundation. 8 * 9 * This program is distributed in the hope that it would be useful, 10 * but WITHOUT ANY WARRANTY; without even the implied warranty of 11 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 12 * GNU General Public License for more details. 13 * 14 * You should have received a copy of the GNU General Public License 15 * along with this program; if not, write the Free Software Foundation, 16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA 17 */ 18#ifndef __XFS_RW_H__ 19#define __XFS_RW_H__ 20 21struct xfs_buf; 22struct xfs_inode; 23struct xfs_mount; 24 25/* 26 * Convert the given file system block to a disk block. 27 * We have to treat it differently based on whether the 28 * file is a real time file or not, because the bmap code 29 * does. 30 */ 31static inline xfs_daddr_t 32xfs_fsb_to_db(struct xfs_inode *ip, xfs_fsblock_t fsb) 33{ 34 return (XFS_IS_REALTIME_INODE(ip) ? \ 35 (xfs_daddr_t)XFS_FSB_TO_BB((ip)->i_mount, (fsb)) : \ 36 XFS_FSB_TO_DADDR((ip)->i_mount, (fsb))); 37} 38 39/* 40 * Prototypes for functions in xfs_rw.c. 41 */ 42extern int xfs_read_buf(struct xfs_mount *mp, xfs_buftarg_t *btp, 43 xfs_daddr_t blkno, int len, uint flags, 44 struct xfs_buf **bpp); 45extern void xfs_ioerror_alert(char *func, struct xfs_mount *mp, 46 xfs_buf_t *bp, xfs_daddr_t blkno); 47extern xfs_extlen_t xfs_get_extsz_hint(struct xfs_inode *ip); 48 49#endif /* __XFS_RW_H__ */ 50