2 * Copyright (c) 2000-2005 Silicon Graphics, Inc.
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.
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.
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
18 #ifndef __XFS_VNODE_H__
19 #define __XFS_VNODE_H__
23 struct attrlist_cursor_kern;
26 * Return values for xfs_inactive. A return value of
27 * VN_INACTIVE_NOCACHE implies that the file system behavior
28 * has disassociated its state and bhv_desc_t from the vnode.
30 #define VN_INACTIVE_CACHE 0
31 #define VN_INACTIVE_NOCACHE 1
34 * Flags for read/write calls - same values as IRIX
36 #define IO_ISAIO 0x00001 /* don't wait for completion */
37 #define IO_ISDIRECT 0x00004 /* bypass page cache */
38 #define IO_INVIS 0x00020 /* don't update inode timestamps */
41 * Flags for xfs_inode_flush
43 #define FLUSH_SYNC 1 /* wait for flush to complete */
46 * Flush/Invalidate options for vop_toss/flush/flushinval_pages.
48 #define FI_NONE 0 /* none */
49 #define FI_REMAPF 1 /* Do a remapf prior to the operation */
50 #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation.
51 Prevent VM access to the pages until
52 the operation completes. */
55 extern void vn_init(void);
58 * Yeah, these don't take vnode anymore at all, all this should be
59 * cleaned up at some point.
61 extern void vn_iowait(struct xfs_inode *ip);
62 extern void vn_iowake(struct xfs_inode *ip);
63 extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l);
65 static inline int vn_count(struct inode *vp)
67 return atomic_read(&vp->i_count);
72 ASSERT(atomic_read(&VFS_I(ip)->i_count) > 0) ; \
73 atomic_inc(&(VFS_I(ip)->i_count)); \
74 xfs_itrace_hold((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
79 xfs_itrace_rele((ip), __FILE__, __LINE__, (inst_t *)__return_address); \
84 * Dealing with bad inodes
86 static inline int VN_BAD(struct inode *vp)
88 return is_bad_inode(vp);
92 * Extracting atime values in various formats
94 static inline void vn_atime_to_bstime(struct inode *vp, xfs_bstime_t *bs_atime)
96 bs_atime->tv_sec = vp->i_atime.tv_sec;
97 bs_atime->tv_nsec = vp->i_atime.tv_nsec;
100 static inline void vn_atime_to_timespec(struct inode *vp, struct timespec *ts)
105 static inline void vn_atime_to_time_t(struct inode *vp, time_t *tt)
107 *tt = vp->i_atime.tv_sec;
111 * Some useful predicates.
113 #define VN_MAPPED(vp) mapping_mapped(vp->i_mapping)
114 #define VN_CACHED(vp) (vp->i_mapping->nrpages)
115 #define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \
120 * Tracking vnode activity.
122 #if defined(XFS_INODE_TRACE)
124 #define INODE_TRACE_SIZE 16 /* number of trace entries */
125 #define INODE_KTRACE_ENTRY 1
126 #define INODE_KTRACE_EXIT 2
127 #define INODE_KTRACE_HOLD 3
128 #define INODE_KTRACE_REF 4
129 #define INODE_KTRACE_RELE 5
131 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *);
132 extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *);
133 extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *);
134 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
135 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
136 #define xfs_itrace_entry(ip) \
137 _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address)
138 #define xfs_itrace_exit(ip) \
139 _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address)
140 #define xfs_itrace_exit_tag(ip, tag) \
141 _xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
142 #define xfs_itrace_ref(ip) \
143 _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address)
146 #define xfs_itrace_entry(a)
147 #define xfs_itrace_exit(a)
148 #define xfs_itrace_exit_tag(a, b)
149 #define xfs_itrace_hold(a, b, c, d)
150 #define xfs_itrace_ref(a)
151 #define xfs_itrace_rele(a, b, c, d)
154 #endif /* __XFS_VNODE_H__ */