1 /*
2 * Copyright (c) 2000-2005 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_VNODE_H__
19 #define __XFS_VNODE_H__
20
21 #include "xfs_fs.h"
22
23 struct file;
24 struct xfs_inode;
25 struct xfs_iomap;
26 struct attrlist_cursor_kern;
27
28 /*
29 * Return values for xfs_inactive. A return value of
30 * VN_INACTIVE_NOCACHE implies that the file system behavior
31 * has disassociated its state and bhv_desc_t from the vnode.
32 */
33 #define VN_INACTIVE_CACHE 0
34 #define VN_INACTIVE_NOCACHE 1
35
36 /*
37 * Flags for read/write calls - same values as IRIX
38 */
39 #define IO_ISAIO 0x00001 /* don't wait for completion */
40 #define IO_ISDIRECT 0x00004 /* bypass page cache */
41 #define IO_INVIS 0x00020 /* don't update inode timestamps */
42
43 /*
44 * Flags for xfs_inode_flush
45 */
46 #define FLUSH_SYNC 1 /* wait for flush to complete */
47
48 /*
49 * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
50 */
51 #define FI_NONE 0 /* none */
52 #define FI_REMAPF 1 /* Do a remapf prior to the operation */
53 #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
54 Prevent VM access to the pages until
55 the operation completes. */
56
57 /*
58 * Dealing with bad inodes
59 */
VN_BAD(struct inode * vp)60 static inline int VN_BAD(struct inode *vp)
61 {
62 return is_bad_inode(vp);
63 }
64
65 /*
66 * Extracting atime values in various formats
67 */
vn_atime_to_bstime(struct inode * vp,xfs_bstime_t * bs_atime)68 static inline void vn_atime_to_bstime(struct inode *vp, xfs_bstime_t *bs_atime)
69 {
70 bs_atime->tv_sec = vp->i_atime.tv_sec;
71 bs_atime->tv_nsec = vp->i_atime.tv_nsec;
72 }
73
vn_atime_to_timespec(struct inode * vp,struct timespec * ts)74 static inline void vn_atime_to_timespec(struct inode *vp, struct timespec *ts)
75 {
76 *ts = vp->i_atime;
77 }
78
vn_atime_to_time_t(struct inode * vp,time_t * tt)79 static inline void vn_atime_to_time_t(struct inode *vp, time_t *tt)
80 {
81 *tt = vp->i_atime.tv_sec;
82 }
83
84 /*
85 * Some useful predicates.
86 */
87 #define VN_MAPPED(vp) mapping_mapped(vp->i_mapping)
88 #define VN_CACHED(vp) (vp->i_mapping->nrpages)
89 #define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \
90 PAGECACHE_TAG_DIRTY)
91
92
93 #endif /* __XFS_VNODE_H__ */
94