Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 1 | /* |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
| 3 | * All Rights Reserved. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 4 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 7 | * published by the Free Software Foundation. |
| 8 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 13 | * |
Nathan Scott | 7b71876 | 2005-11-02 14:58:39 +1100 | [diff] [blame] | 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 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 17 | */ |
| 18 | #ifndef __XFS_VNODE_H__ |
| 19 | #define __XFS_VNODE_H__ |
| 20 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 21 | struct file; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 22 | struct xfs_iomap; |
| 23 | struct attrlist_cursor_kern; |
| 24 | |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 25 | typedef struct inode bhv_vnode_t; |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 26 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 27 | /* |
| 28 | * Vnode to Linux inode mapping. |
| 29 | */ |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 30 | static inline bhv_vnode_t *vn_from_inode(struct inode *inode) |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 31 | { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 32 | return inode; |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 33 | } |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 34 | static inline struct inode *vn_to_inode(bhv_vnode_t *vnode) |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 35 | { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 36 | return vnode; |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 37 | } |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 38 | |
| 39 | /* |
Christoph Hellwig | 739bfb2 | 2007-08-29 10:58:01 +1000 | [diff] [blame] | 40 | * Return values for xfs_inactive. A return value of |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 41 | * VN_INACTIVE_NOCACHE implies that the file system behavior |
| 42 | * has disassociated its state and bhv_desc_t from the vnode. |
| 43 | */ |
| 44 | #define VN_INACTIVE_CACHE 0 |
| 45 | #define VN_INACTIVE_NOCACHE 1 |
| 46 | |
| 47 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 48 | * Flags for read/write calls - same values as IRIX |
| 49 | */ |
| 50 | #define IO_ISAIO 0x00001 /* don't wait for completion */ |
| 51 | #define IO_ISDIRECT 0x00004 /* bypass page cache */ |
| 52 | #define IO_INVIS 0x00020 /* don't update inode timestamps */ |
| 53 | |
| 54 | /* |
David Chinner | a3f74ff | 2008-03-06 13:43:42 +1100 | [diff] [blame] | 55 | * Flags for xfs_inode_flush |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 56 | */ |
| 57 | #define FLUSH_SYNC 1 /* wait for flush to complete */ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 58 | |
| 59 | /* |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 60 | * Flush/Invalidate options for vop_toss/flush/flushinval_pages. |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 61 | */ |
| 62 | #define FI_NONE 0 /* none */ |
| 63 | #define FI_REMAPF 1 /* Do a remapf prior to the operation */ |
| 64 | #define FI_REMAPF_LOCKED 2 /* Do a remapf prior to the operation. |
| 65 | Prevent VM access to the pages until |
| 66 | the operation completes. */ |
| 67 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 68 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 69 | extern void vn_init(void); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 70 | |
Christoph Hellwig | b677c21 | 2007-08-29 11:46:28 +1000 | [diff] [blame] | 71 | /* |
| 72 | * Yeah, these don't take vnode anymore at all, all this should be |
| 73 | * cleaned up at some point. |
| 74 | */ |
| 75 | extern void vn_iowait(struct xfs_inode *ip); |
| 76 | extern void vn_iowake(struct xfs_inode *ip); |
| 77 | extern void vn_ioerror(struct xfs_inode *ip, int error, char *f, int l); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 78 | |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 79 | static inline int vn_count(bhv_vnode_t *vp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 80 | { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 81 | return atomic_read(&vn_to_inode(vp)->i_count); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 82 | } |
| 83 | |
| 84 | /* |
| 85 | * Vnode reference counting functions (and macros for compatibility). |
| 86 | */ |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 87 | extern bhv_vnode_t *vn_hold(bhv_vnode_t *); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 88 | |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 89 | #if defined(XFS_INODE_TRACE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 90 | #define VN_HOLD(vp) \ |
| 91 | ((void)vn_hold(vp), \ |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 92 | xfs_itrace_hold(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address)) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 93 | #define VN_RELE(vp) \ |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 94 | (xfs_itrace_rele(xfs_vtoi(vp), __FILE__, __LINE__, (inst_t *)__return_address), \ |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 95 | iput(vn_to_inode(vp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 96 | #else |
| 97 | #define VN_HOLD(vp) ((void)vn_hold(vp)) |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 98 | #define VN_RELE(vp) (iput(vn_to_inode(vp))) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 99 | #endif |
| 100 | |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 101 | static inline bhv_vnode_t *vn_grab(bhv_vnode_t *vp) |
Christoph Hellwig | cdb6268 | 2005-09-02 16:24:19 +1000 | [diff] [blame] | 102 | { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 103 | struct inode *inode = igrab(vn_to_inode(vp)); |
| 104 | return inode ? vn_from_inode(inode) : NULL; |
Christoph Hellwig | cdb6268 | 2005-09-02 16:24:19 +1000 | [diff] [blame] | 105 | } |
| 106 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 107 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 108 | * Dealing with bad inodes |
| 109 | */ |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 110 | static inline int VN_BAD(bhv_vnode_t *vp) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 111 | { |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 112 | return is_bad_inode(vn_to_inode(vp)); |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 113 | } |
| 114 | |
| 115 | /* |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 116 | * Extracting atime values in various formats |
| 117 | */ |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 118 | static inline void vn_atime_to_bstime(bhv_vnode_t *vp, xfs_bstime_t *bs_atime) |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 119 | { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 120 | bs_atime->tv_sec = vp->i_atime.tv_sec; |
| 121 | bs_atime->tv_nsec = vp->i_atime.tv_nsec; |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 122 | } |
| 123 | |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 124 | static inline void vn_atime_to_timespec(bhv_vnode_t *vp, struct timespec *ts) |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 125 | { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 126 | *ts = vp->i_atime; |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 127 | } |
| 128 | |
Nathan Scott | 67fcaa7 | 2006-06-09 17:00:52 +1000 | [diff] [blame] | 129 | static inline void vn_atime_to_time_t(bhv_vnode_t *vp, time_t *tt) |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 130 | { |
Christoph Hellwig | 0a74cd1 | 2007-08-29 11:53:12 +1000 | [diff] [blame] | 131 | *tt = vp->i_atime.tv_sec; |
Nathan Scott | ca5ccbf | 2006-01-11 21:03:04 +1100 | [diff] [blame] | 132 | } |
| 133 | |
| 134 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 135 | * Some useful predicates. |
| 136 | */ |
Nathan Scott | ec86dc0 | 2006-03-17 17:25:36 +1100 | [diff] [blame] | 137 | #define VN_MAPPED(vp) mapping_mapped(vn_to_inode(vp)->i_mapping) |
| 138 | #define VN_CACHED(vp) (vn_to_inode(vp)->i_mapping->nrpages) |
| 139 | #define VN_DIRTY(vp) mapping_tagged(vn_to_inode(vp)->i_mapping, \ |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 140 | PAGECACHE_TAG_DIRTY) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 141 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 142 | |
| 143 | /* |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 144 | * Tracking vnode activity. |
| 145 | */ |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 146 | #if defined(XFS_INODE_TRACE) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 147 | |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 148 | #define INODE_TRACE_SIZE 16 /* number of trace entries */ |
| 149 | #define INODE_KTRACE_ENTRY 1 |
| 150 | #define INODE_KTRACE_EXIT 2 |
| 151 | #define INODE_KTRACE_HOLD 3 |
| 152 | #define INODE_KTRACE_REF 4 |
| 153 | #define INODE_KTRACE_RELE 5 |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 154 | |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 155 | extern void _xfs_itrace_entry(struct xfs_inode *, const char *, inst_t *); |
| 156 | extern void _xfs_itrace_exit(struct xfs_inode *, const char *, inst_t *); |
| 157 | extern void xfs_itrace_hold(struct xfs_inode *, char *, int, inst_t *); |
| 158 | extern void _xfs_itrace_ref(struct xfs_inode *, char *, int, inst_t *); |
| 159 | extern void xfs_itrace_rele(struct xfs_inode *, char *, int, inst_t *); |
| 160 | #define xfs_itrace_entry(ip) \ |
Harvey Harrison | 34a622b | 2008-04-10 12:19:21 +1000 | [diff] [blame] | 161 | _xfs_itrace_entry(ip, __func__, (inst_t *)__return_address) |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 162 | #define xfs_itrace_exit(ip) \ |
Harvey Harrison | 34a622b | 2008-04-10 12:19:21 +1000 | [diff] [blame] | 163 | _xfs_itrace_exit(ip, __func__, (inst_t *)__return_address) |
Lachlan McIlroy | 15947f2 | 2007-09-17 13:11:58 +1000 | [diff] [blame] | 164 | #define xfs_itrace_exit_tag(ip, tag) \ |
| 165 | _xfs_itrace_exit(ip, tag, (inst_t *)__return_address) |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 166 | #define xfs_itrace_ref(ip) \ |
| 167 | _xfs_itrace_ref(ip, __FILE__, __LINE__, (inst_t *)__return_address) |
| 168 | |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 169 | #else |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 170 | #define xfs_itrace_entry(a) |
| 171 | #define xfs_itrace_exit(a) |
Lachlan McIlroy | 15947f2 | 2007-09-17 13:11:58 +1000 | [diff] [blame] | 172 | #define xfs_itrace_exit_tag(a, b) |
Lachlan McIlroy | cf441ee | 2008-02-07 16:42:19 +1100 | [diff] [blame] | 173 | #define xfs_itrace_hold(a, b, c, d) |
| 174 | #define xfs_itrace_ref(a) |
| 175 | #define xfs_itrace_rele(a, b, c, d) |
Linus Torvalds | 1da177e | 2005-04-16 15:20:36 -0700 | [diff] [blame] | 176 | #endif |
| 177 | |
| 178 | #endif /* __XFS_VNODE_H__ */ |