/* * Copyright (c) 2000-2003 Silicon Graphics, Inc.  All Rights Reserved. * * This program is free software; you can redistribute it and/or modify it * under the terms of version 2 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. * * Further, this software is distributed without any warranty that it is * free of the rightful claim of any third person regarding infringement * or the like.  Any license provided herein, whether implied or * otherwise, applies only to this software file.  Patent licenses, if * any, provided herein do not apply to combinations of this program with * other software, or any other product whatsoever. * * You should have received a copy of the GNU General Public License along * with this program; if not, write the Free Software Foundation, Inc., 59 * Temple Place - Suite 330, Boston MA 02111-1307, USA. * * Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy, * Mountain View, CA  94043, or: * * http://www.sgi.com * * For further information regarding this notice, see: * * http://oss.sgi.com/projects/GenInfo/SGIGPLNoticeExplan/ */#ifndef __XFS_LRW_H__#define __XFS_LRW_H__struct vnode;struct bhv_desc;struct xfs_mount;struct xfs_iocore;struct xfs_inode;struct xfs_bmbt_irec;struct xfs_buf;struct xfs_iomap;#if defined(XFS_RW_TRACE)/* * Defines for the trace mechanisms in xfs_lrw.c. */#define	XFS_RW_KTRACE_SIZE	128#define	XFS_READ_ENTER		1#define	XFS_WRITE_ENTER		2#define XFS_IOMAP_READ_ENTER	3#define	XFS_IOMAP_WRITE_ENTER	4#define	XFS_IOMAP_READ_MAP	5#define	XFS_IOMAP_WRITE_MAP	6#define	XFS_IOMAP_WRITE_NOSPACE	7#define	XFS_ITRUNC_START	8#define	XFS_ITRUNC_FINISH1	9#define	XFS_ITRUNC_FINISH2	10#define	XFS_CTRUNC1		11#define	XFS_CTRUNC2		12#define	XFS_CTRUNC3		13#define	XFS_CTRUNC4		14#define	XFS_CTRUNC5		15#define	XFS_CTRUNC6		16#define	XFS_BUNMAPI		17#define	XFS_INVAL_CACHED	18#define	XFS_DIORD_ENTER		19#define	XFS_DIOWR_ENTER		20#define	XFS_SENDFILE_ENTER	21#define	XFS_WRITEPAGE_ENTER	22#define	XFS_RELEASEPAGE_ENTER	23#define	XFS_IOMAP_ALLOC_ENTER	24#define	XFS_IOMAP_ALLOC_MAP	25#define	XFS_IOMAP_UNWRITTEN	26extern void xfs_rw_enter_trace(int, struct xfs_iocore *,			const struct iovec *, size_t, loff_t, int);extern void xfs_inval_cached_trace(struct xfs_iocore *,			xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);#else#define xfs_rw_enter_trace(tag, io, iovec, segs, offset, ioflags)#define xfs_inval_cached_trace(io, offset, len, first, last)#endif/* * Maximum count of bmaps used by read and write paths. */#define	XFS_MAX_RW_NBMAPS	4extern int xfs_bmap(struct bhv_desc *, xfs_off_t, ssize_t, int,			struct xfs_iomap *, int *);extern int xfsbdstrat(struct xfs_mount *, struct xfs_buf *);extern int xfs_bdstrat_cb(struct xfs_buf *);extern int xfs_zero_eof(struct vnode *, struct xfs_iocore *, xfs_off_t,				xfs_fsize_t, xfs_fsize_t);extern void xfs_inval_cached_pages(struct vnode	*, struct xfs_iocore *,				xfs_off_t, int, int);extern ssize_t xfs_read(struct bhv_desc *, struct kiocb *,				const struct iovec *, unsigned int,				loff_t *, int, struct cred *);extern ssize_t xfs_write(struct bhv_desc *, struct kiocb *,				const struct iovec *, unsigned int,				loff_t *, int, struct cred *);extern ssize_t xfs_sendfile(struct bhv_desc *, struct file *,				loff_t *, int, size_t, read_actor_t,				void *, struct cred *);extern int xfs_dev_is_read_only(struct xfs_mount *, char *);#define XFS_FSB_TO_DB_IO(io,fsb) \		(((io)->io_flags & XFS_IOCORE_RT) ? \		 XFS_FSB_TO_BB((io)->io_mount, (fsb)) : \		 XFS_FSB_TO_DADDR((io)->io_mount, (fsb)))#endif	/* __XFS_LRW_H__ */