--- /dev/null
+/*
+ * 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 26
+extern 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 4
+
+extern 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__ */
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