patch-2.4.27 linux-2.4.27/fs/xfs/linux-2.4/xfs_lrw.h

• Lines: 112
• Date: 2004-08-07 16:26:06.089405742 -0700
• Orig file: linux-2.4.26/fs/xfs/linux-2.4/xfs_lrw.h
• Orig date: 1969-12-31 16:00:00.000000000 -0800

diff -urN linux-2.4.26/fs/xfs/linux-2.4/xfs_lrw.h linux-2.4.27/fs/xfs/linux-2.4/xfs_lrw.h
@@ -0,0 +1,111 @@
+/*
+ * 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 char *, 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, buf, size, 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 file *, char	*,
+				size_t, loff_t *, int, struct cred *);
+extern ssize_t xfs_write(struct bhv_desc *, struct file *, const char *,
+				size_t, loff_t *, int, 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__ */