fs/xfs/linux-2.6/xfs_lrw.h

   1 /*
   2  * Copyright (c) 2000-2003,2005 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_LRW_H__
  19 #define __XFS_LRW_H__
  20
  21 struct xfs_mount;
  22 struct xfs_inode;
  23 struct xfs_bmbt_irec;
  24 struct xfs_buf;
  25 struct xfs_iomap;
  26
  27 #if defined(XFS_RW_TRACE)
  28 /*
  29  * Defines for the trace mechanisms in xfs_lrw.c.
  30  */
  31 #define XFS_RW_KTRACE_SIZE      128
  32
  33 #define XFS_READ_ENTER          1
  34 #define XFS_WRITE_ENTER         2
  35 #define XFS_IOMAP_READ_ENTER    3
  36 #define XFS_IOMAP_WRITE_ENTER   4
  37 #define XFS_IOMAP_READ_MAP      5
  38 #define XFS_IOMAP_WRITE_MAP     6
  39 #define XFS_IOMAP_WRITE_NOSPACE 7
  40 #define XFS_ITRUNC_START        8
  41 #define XFS_ITRUNC_FINISH1      9
  42 #define XFS_ITRUNC_FINISH2      10
  43 #define XFS_CTRUNC1             11
  44 #define XFS_CTRUNC2             12
  45 #define XFS_CTRUNC3             13
  46 #define XFS_CTRUNC4             14
  47 #define XFS_CTRUNC5             15
  48 #define XFS_CTRUNC6             16
  49 #define XFS_BUNMAP              17
  50 #define XFS_INVAL_CACHED        18
  51 #define XFS_DIORD_ENTER         19
  52 #define XFS_DIOWR_ENTER         20
  53 #define XFS_WRITEPAGE_ENTER     22
  54 #define XFS_RELEASEPAGE_ENTER   23
  55 #define XFS_INVALIDPAGE_ENTER   24
  56 #define XFS_IOMAP_ALLOC_ENTER   25
  57 #define XFS_IOMAP_ALLOC_MAP     26
  58 #define XFS_IOMAP_UNWRITTEN     27
  59 #define XFS_SPLICE_READ_ENTER   28
  60 #define XFS_SPLICE_WRITE_ENTER  29
  61 extern void xfs_rw_enter_trace(int, struct xfs_inode *,
  62                 void *, size_t, loff_t, int);
  63 extern void xfs_inval_cached_trace(struct xfs_inode *,
  64                 xfs_off_t, xfs_off_t, xfs_off_t, xfs_off_t);
  65 #else
  66 #define xfs_rw_enter_trace(tag, ip, data, size, offset, ioflags)
  67 #define xfs_inval_cached_trace(ip, offset, len, first, last)
  68 #endif
  69
  70 /* errors from xfsbdstrat() must be extracted from the buffer */
  71 extern void xfsbdstrat(struct xfs_mount *, struct xfs_buf *);
  72 extern int xfs_bdstrat_cb(struct xfs_buf *);
  73 extern int xfs_dev_is_read_only(struct xfs_mount *, char *);
  74
  75 extern int xfs_zero_eof(struct xfs_inode *, xfs_off_t, xfs_fsize_t);
  76
  77 #endif  /* __XFS_LRW_H__ */