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); \
83 static inline struct inode *vn_grab(struct inode *vp)
89 * Dealing with bad inodes
91 static inline int VN_BAD(struct inode *vp)
93 return is_bad_inode(vp);
97 * Extracting atime values in various formats
99 static inline void vn_atime_to_bstime(struct inode *vp, xfs_bstime_t *bs_atime)
101 bs_atime->tv_sec = vp->i_atime.tv_sec;
102 bs_atime->tv_nsec = vp->i_atime.tv_nsec;
105 static inline void vn_atime_to_timespec(struct inode *vp, struct timespec *ts)
110 static inline void vn_atime_to_time_t(struct inode *vp, time_t *tt)
112 *tt = vp->i_atime.tv_sec;
116 * Some useful predicates.
118 #define VN_MAPPED(vp) mapping_mapped(vp->i_mapping)
119 #define VN_CACHED(vp) (vp->i_mapping->nrpages)
120 #define VN_DIRTY(vp) mapping_tagged(vp->i_mapping, \
125 * Tracking vnode activity.
127 #if defined(XFS_INODE_TRACE)
129 #define INODE_TRACE_SIZE 16 /* number of trace entries */
130 #define INODE_KTRACE_ENTRY 1
131 #define INODE_KTRACE_EXIT 2
132 #define INODE_KTRACE_HOLD 3
133 #define INODE_KTRACE_REF 4
134 #define INODE_KTRACE_RELE 5
136 extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *);
137 extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *);
138 extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *);
139 extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *);
140 extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *);
141 #define xfs_itrace_entry(ip) \
142 _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address)
143 #define xfs_itrace_exit(ip) \
144 _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address)
145 #define xfs_itrace_exit_tag(ip, tag) \
146 _xfs_itrace_exit(ip, tag, (inst_t *)__return_address)
147 #define xfs_itrace_ref(ip) \
148 _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address)
151 #define xfs_itrace_entry(a)
152 #define xfs_itrace_exit(a)
153 #define xfs_itrace_exit_tag(a, b)
154 #define xfs_itrace_hold(a, b, c, d)
155 #define xfs_itrace_ref(a)
156 #define xfs_itrace_rele(a, b, c, d)
159 #endif /* __XFS_VNODE_H__ */