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1da177e4 | 1 | /* |
7b718769 NS |
2 | * Copyright (c) 2000-2005 Silicon Graphics, Inc. |
3 | * All Rights Reserved. | |
1da177e4 | 4 | * |
7b718769 NS |
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 | |
1da177e4 LT |
7 | * published by the Free Software Foundation. |
8 | * | |
7b718769 NS |
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. | |
1da177e4 | 13 | * |
7b718769 NS |
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 | |
1da177e4 LT |
17 | */ |
18 | #ifndef __XFS_MOUNT_H__ | |
19 | #define __XFS_MOUNT_H__ | |
20 | ||
1da177e4 LT |
21 | typedef struct xfs_trans_reservations { |
22 | uint tr_write; /* extent alloc trans */ | |
23 | uint tr_itruncate; /* truncate trans */ | |
24 | uint tr_rename; /* rename trans */ | |
25 | uint tr_link; /* link trans */ | |
26 | uint tr_remove; /* unlink trans */ | |
27 | uint tr_symlink; /* symlink trans */ | |
28 | uint tr_create; /* create trans */ | |
29 | uint tr_mkdir; /* mkdir trans */ | |
30 | uint tr_ifree; /* inode free trans */ | |
31 | uint tr_ichange; /* inode update trans */ | |
32 | uint tr_growdata; /* fs data section grow trans */ | |
33 | uint tr_swrite; /* sync write inode trans */ | |
34 | uint tr_addafork; /* cvt inode to attributed trans */ | |
35 | uint tr_writeid; /* write setuid/setgid file */ | |
36 | uint tr_attrinval; /* attr fork buffer invalidation */ | |
37 | uint tr_attrset; /* set/create an attribute */ | |
38 | uint tr_attrrm; /* remove an attribute */ | |
39 | uint tr_clearagi; /* clear bad agi unlinked ino bucket */ | |
40 | uint tr_growrtalloc; /* grow realtime allocations */ | |
41 | uint tr_growrtzero; /* grow realtime zeroing */ | |
42 | uint tr_growrtfree; /* grow realtime freeing */ | |
43 | } xfs_trans_reservations_t; | |
44 | ||
1da177e4 LT |
45 | #ifndef __KERNEL__ |
46 | /* | |
47 | * Moved here from xfs_ag.h to avoid reordering header files | |
48 | */ | |
49 | #define XFS_DADDR_TO_AGNO(mp,d) \ | |
50 | ((xfs_agnumber_t)(XFS_BB_TO_FSBT(mp, d) / (mp)->m_sb.sb_agblocks)) | |
51 | #define XFS_DADDR_TO_AGBNO(mp,d) \ | |
52 | ((xfs_agblock_t)(XFS_BB_TO_FSBT(mp, d) % (mp)->m_sb.sb_agblocks)) | |
53 | #else | |
54 | struct cred; | |
55 | struct log; | |
56 | struct vfs; | |
57 | struct vnode; | |
58 | struct xfs_mount_args; | |
59 | struct xfs_ihash; | |
60 | struct xfs_chash; | |
61 | struct xfs_inode; | |
62 | struct xfs_perag; | |
63 | struct xfs_iocore; | |
64 | struct xfs_bmbt_irec; | |
65 | struct xfs_bmap_free; | |
66 | ||
a844f451 NS |
67 | extern struct vfsops xfs_vfsops; |
68 | extern struct vnodeops xfs_vnodeops; | |
69 | ||
1da177e4 LT |
70 | #define AIL_LOCK_T lock_t |
71 | #define AIL_LOCKINIT(x,y) spinlock_init(x,y) | |
72 | #define AIL_LOCK_DESTROY(x) spinlock_destroy(x) | |
73 | #define AIL_LOCK(mp,s) s=mutex_spinlock(&(mp)->m_ail_lock) | |
74 | #define AIL_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_ail_lock, s) | |
75 | ||
76 | ||
77 | /* | |
78 | * Prototypes and functions for the Data Migration subsystem. | |
79 | */ | |
80 | ||
81 | typedef int (*xfs_send_data_t)(int, struct vnode *, | |
82 | xfs_off_t, size_t, int, vrwlock_t *); | |
83 | typedef int (*xfs_send_mmap_t)(struct vm_area_struct *, uint); | |
84 | typedef int (*xfs_send_destroy_t)(struct vnode *, dm_right_t); | |
85 | typedef int (*xfs_send_namesp_t)(dm_eventtype_t, struct vfs *, | |
86 | struct vnode *, | |
87 | dm_right_t, struct vnode *, dm_right_t, | |
88 | char *, char *, mode_t, int, int); | |
89 | typedef void (*xfs_send_unmount_t)(struct vfs *, struct vnode *, | |
90 | dm_right_t, mode_t, int, int); | |
91 | ||
92 | typedef struct xfs_dmops { | |
93 | xfs_send_data_t xfs_send_data; | |
94 | xfs_send_mmap_t xfs_send_mmap; | |
95 | xfs_send_destroy_t xfs_send_destroy; | |
96 | xfs_send_namesp_t xfs_send_namesp; | |
97 | xfs_send_unmount_t xfs_send_unmount; | |
98 | } xfs_dmops_t; | |
99 | ||
100 | #define XFS_SEND_DATA(mp, ev,vp,off,len,fl,lock) \ | |
101 | (*(mp)->m_dm_ops.xfs_send_data)(ev,vp,off,len,fl,lock) | |
102 | #define XFS_SEND_MMAP(mp, vma,fl) \ | |
103 | (*(mp)->m_dm_ops.xfs_send_mmap)(vma,fl) | |
104 | #define XFS_SEND_DESTROY(mp, vp,right) \ | |
105 | (*(mp)->m_dm_ops.xfs_send_destroy)(vp,right) | |
106 | #define XFS_SEND_NAMESP(mp, ev,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ | |
107 | (*(mp)->m_dm_ops.xfs_send_namesp)(ev,NULL,b1,r1,b2,r2,n1,n2,mode,rval,fl) | |
108 | #define XFS_SEND_PREUNMOUNT(mp, vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) \ | |
109 | (*(mp)->m_dm_ops.xfs_send_namesp)(DM_EVENT_PREUNMOUNT,vfs,b1,r1,b2,r2,n1,n2,mode,rval,fl) | |
110 | #define XFS_SEND_UNMOUNT(mp, vfsp,vp,right,mode,rval,fl) \ | |
111 | (*(mp)->m_dm_ops.xfs_send_unmount)(vfsp,vp,right,mode,rval,fl) | |
112 | ||
113 | ||
114 | /* | |
115 | * Prototypes and functions for the Quota Management subsystem. | |
116 | */ | |
117 | ||
118 | struct xfs_dquot; | |
119 | struct xfs_dqtrxops; | |
120 | struct xfs_quotainfo; | |
121 | ||
122 | typedef int (*xfs_qminit_t)(struct xfs_mount *, uint *, uint *); | |
123 | typedef int (*xfs_qmmount_t)(struct xfs_mount *, uint, uint, int); | |
124 | typedef int (*xfs_qmunmount_t)(struct xfs_mount *); | |
125 | typedef void (*xfs_qmdone_t)(struct xfs_mount *); | |
126 | typedef void (*xfs_dqrele_t)(struct xfs_dquot *); | |
127 | typedef int (*xfs_dqattach_t)(struct xfs_inode *, uint); | |
128 | typedef void (*xfs_dqdetach_t)(struct xfs_inode *); | |
129 | typedef int (*xfs_dqpurgeall_t)(struct xfs_mount *, uint); | |
130 | typedef int (*xfs_dqvopalloc_t)(struct xfs_mount *, | |
c8ad20ff | 131 | struct xfs_inode *, uid_t, gid_t, prid_t, uint, |
1da177e4 LT |
132 | struct xfs_dquot **, struct xfs_dquot **); |
133 | typedef void (*xfs_dqvopcreate_t)(struct xfs_trans *, struct xfs_inode *, | |
134 | struct xfs_dquot *, struct xfs_dquot *); | |
135 | typedef int (*xfs_dqvoprename_t)(struct xfs_inode **); | |
136 | typedef struct xfs_dquot * (*xfs_dqvopchown_t)( | |
137 | struct xfs_trans *, struct xfs_inode *, | |
138 | struct xfs_dquot **, struct xfs_dquot *); | |
139 | typedef int (*xfs_dqvopchownresv_t)(struct xfs_trans *, struct xfs_inode *, | |
140 | struct xfs_dquot *, struct xfs_dquot *, uint); | |
141 | ||
142 | typedef struct xfs_qmops { | |
143 | xfs_qminit_t xfs_qminit; | |
144 | xfs_qmdone_t xfs_qmdone; | |
145 | xfs_qmmount_t xfs_qmmount; | |
146 | xfs_qmunmount_t xfs_qmunmount; | |
147 | xfs_dqrele_t xfs_dqrele; | |
148 | xfs_dqattach_t xfs_dqattach; | |
149 | xfs_dqdetach_t xfs_dqdetach; | |
150 | xfs_dqpurgeall_t xfs_dqpurgeall; | |
151 | xfs_dqvopalloc_t xfs_dqvopalloc; | |
152 | xfs_dqvopcreate_t xfs_dqvopcreate; | |
153 | xfs_dqvoprename_t xfs_dqvoprename; | |
154 | xfs_dqvopchown_t xfs_dqvopchown; | |
155 | xfs_dqvopchownresv_t xfs_dqvopchownresv; | |
156 | struct xfs_dqtrxops *xfs_dqtrxops; | |
157 | } xfs_qmops_t; | |
158 | ||
159 | #define XFS_QM_INIT(mp, mnt, fl) \ | |
160 | (*(mp)->m_qm_ops.xfs_qminit)(mp, mnt, fl) | |
161 | #define XFS_QM_MOUNT(mp, mnt, fl, mfsi_flags) \ | |
162 | (*(mp)->m_qm_ops.xfs_qmmount)(mp, mnt, fl, mfsi_flags) | |
163 | #define XFS_QM_UNMOUNT(mp) \ | |
164 | (*(mp)->m_qm_ops.xfs_qmunmount)(mp) | |
165 | #define XFS_QM_DONE(mp) \ | |
166 | (*(mp)->m_qm_ops.xfs_qmdone)(mp) | |
167 | #define XFS_QM_DQRELE(mp, dq) \ | |
168 | (*(mp)->m_qm_ops.xfs_dqrele)(dq) | |
169 | #define XFS_QM_DQATTACH(mp, ip, fl) \ | |
170 | (*(mp)->m_qm_ops.xfs_dqattach)(ip, fl) | |
171 | #define XFS_QM_DQDETACH(mp, ip) \ | |
172 | (*(mp)->m_qm_ops.xfs_dqdetach)(ip) | |
173 | #define XFS_QM_DQPURGEALL(mp, fl) \ | |
174 | (*(mp)->m_qm_ops.xfs_dqpurgeall)(mp, fl) | |
c8ad20ff NS |
175 | #define XFS_QM_DQVOPALLOC(mp, ip, uid, gid, prid, fl, dq1, dq2) \ |
176 | (*(mp)->m_qm_ops.xfs_dqvopalloc)(mp, ip, uid, gid, prid, fl, dq1, dq2) | |
1da177e4 LT |
177 | #define XFS_QM_DQVOPCREATE(mp, tp, ip, dq1, dq2) \ |
178 | (*(mp)->m_qm_ops.xfs_dqvopcreate)(tp, ip, dq1, dq2) | |
179 | #define XFS_QM_DQVOPRENAME(mp, ip) \ | |
180 | (*(mp)->m_qm_ops.xfs_dqvoprename)(ip) | |
181 | #define XFS_QM_DQVOPCHOWN(mp, tp, ip, dqp, dq) \ | |
182 | (*(mp)->m_qm_ops.xfs_dqvopchown)(tp, ip, dqp, dq) | |
183 | #define XFS_QM_DQVOPCHOWNRESV(mp, tp, ip, dq1, dq2, fl) \ | |
184 | (*(mp)->m_qm_ops.xfs_dqvopchownresv)(tp, ip, dq1, dq2, fl) | |
185 | ||
186 | ||
187 | /* | |
188 | * Prototypes and functions for I/O core modularization. | |
189 | */ | |
190 | ||
191 | typedef int (*xfs_ioinit_t)(struct vfs *, | |
192 | struct xfs_mount_args *, int); | |
193 | typedef int (*xfs_bmapi_t)(struct xfs_trans *, void *, | |
194 | xfs_fileoff_t, xfs_filblks_t, int, | |
195 | xfs_fsblock_t *, xfs_extlen_t, | |
196 | struct xfs_bmbt_irec *, int *, | |
197 | struct xfs_bmap_free *); | |
198 | typedef int (*xfs_bmap_eof_t)(void *, xfs_fileoff_t, int, int *); | |
199 | typedef int (*xfs_iomap_write_direct_t)( | |
f403b7f4 | 200 | void *, xfs_off_t, size_t, int, |
1da177e4 LT |
201 | struct xfs_bmbt_irec *, int *, int); |
202 | typedef int (*xfs_iomap_write_delay_t)( | |
f403b7f4 | 203 | void *, xfs_off_t, size_t, int, |
1da177e4 LT |
204 | struct xfs_bmbt_irec *, int *); |
205 | typedef int (*xfs_iomap_write_allocate_t)( | |
f403b7f4 | 206 | void *, xfs_off_t, size_t, |
24e17b5f | 207 | struct xfs_bmbt_irec *, int *); |
1da177e4 | 208 | typedef int (*xfs_iomap_write_unwritten_t)( |
f403b7f4 | 209 | void *, xfs_off_t, size_t); |
1da177e4 LT |
210 | typedef uint (*xfs_lck_map_shared_t)(void *); |
211 | typedef void (*xfs_lock_t)(void *, uint); | |
212 | typedef void (*xfs_lock_demote_t)(void *, uint); | |
213 | typedef int (*xfs_lock_nowait_t)(void *, uint); | |
214 | typedef void (*xfs_unlk_t)(void *, unsigned int); | |
215 | typedef xfs_fsize_t (*xfs_size_t)(void *); | |
216 | typedef xfs_fsize_t (*xfs_iodone_t)(struct vfs *); | |
217 | ||
218 | typedef struct xfs_ioops { | |
219 | xfs_ioinit_t xfs_ioinit; | |
220 | xfs_bmapi_t xfs_bmapi_func; | |
221 | xfs_bmap_eof_t xfs_bmap_eof_func; | |
222 | xfs_iomap_write_direct_t xfs_iomap_write_direct; | |
223 | xfs_iomap_write_delay_t xfs_iomap_write_delay; | |
224 | xfs_iomap_write_allocate_t xfs_iomap_write_allocate; | |
225 | xfs_iomap_write_unwritten_t xfs_iomap_write_unwritten; | |
226 | xfs_lock_t xfs_ilock; | |
227 | xfs_lck_map_shared_t xfs_lck_map_shared; | |
228 | xfs_lock_demote_t xfs_ilock_demote; | |
229 | xfs_lock_nowait_t xfs_ilock_nowait; | |
230 | xfs_unlk_t xfs_unlock; | |
231 | xfs_size_t xfs_size_func; | |
232 | xfs_iodone_t xfs_iodone; | |
233 | } xfs_ioops_t; | |
234 | ||
235 | #define XFS_IOINIT(vfsp, args, flags) \ | |
236 | (*(mp)->m_io_ops.xfs_ioinit)(vfsp, args, flags) | |
237 | #define XFS_BMAPI(mp, trans,io,bno,len,f,first,tot,mval,nmap,flist) \ | |
238 | (*(mp)->m_io_ops.xfs_bmapi_func) \ | |
239 | (trans,(io)->io_obj,bno,len,f,first,tot,mval,nmap,flist) | |
240 | #define XFS_BMAP_EOF(mp, io, endoff, whichfork, eof) \ | |
241 | (*(mp)->m_io_ops.xfs_bmap_eof_func) \ | |
242 | ((io)->io_obj, endoff, whichfork, eof) | |
243 | #define XFS_IOMAP_WRITE_DIRECT(mp, io, offset, count, flags, mval, nmap, found)\ | |
244 | (*(mp)->m_io_ops.xfs_iomap_write_direct) \ | |
245 | ((io)->io_obj, offset, count, flags, mval, nmap, found) | |
246 | #define XFS_IOMAP_WRITE_DELAY(mp, io, offset, count, flags, mval, nmap) \ | |
247 | (*(mp)->m_io_ops.xfs_iomap_write_delay) \ | |
248 | ((io)->io_obj, offset, count, flags, mval, nmap) | |
24e17b5f | 249 | #define XFS_IOMAP_WRITE_ALLOCATE(mp, io, offset, count, mval, nmap) \ |
1da177e4 | 250 | (*(mp)->m_io_ops.xfs_iomap_write_allocate) \ |
24e17b5f | 251 | ((io)->io_obj, offset, count, mval, nmap) |
1da177e4 LT |
252 | #define XFS_IOMAP_WRITE_UNWRITTEN(mp, io, offset, count) \ |
253 | (*(mp)->m_io_ops.xfs_iomap_write_unwritten) \ | |
254 | ((io)->io_obj, offset, count) | |
255 | #define XFS_LCK_MAP_SHARED(mp, io) \ | |
256 | (*(mp)->m_io_ops.xfs_lck_map_shared)((io)->io_obj) | |
257 | #define XFS_ILOCK(mp, io, mode) \ | |
258 | (*(mp)->m_io_ops.xfs_ilock)((io)->io_obj, mode) | |
259 | #define XFS_ILOCK_NOWAIT(mp, io, mode) \ | |
260 | (*(mp)->m_io_ops.xfs_ilock_nowait)((io)->io_obj, mode) | |
261 | #define XFS_IUNLOCK(mp, io, mode) \ | |
262 | (*(mp)->m_io_ops.xfs_unlock)((io)->io_obj, mode) | |
263 | #define XFS_ILOCK_DEMOTE(mp, io, mode) \ | |
264 | (*(mp)->m_io_ops.xfs_ilock_demote)((io)->io_obj, mode) | |
265 | #define XFS_SIZE(mp, io) \ | |
266 | (*(mp)->m_io_ops.xfs_size_func)((io)->io_obj) | |
267 | #define XFS_IODONE(vfsp) \ | |
268 | (*(mp)->m_io_ops.xfs_iodone)(vfsp) | |
269 | ||
8d280b98 DC |
270 | #ifdef HAVE_PERCPU_SB |
271 | ||
272 | /* | |
273 | * Valid per-cpu incore superblock counters. Note that if you add new counters, | |
274 | * you may need to define new counter disabled bit field descriptors as there | |
275 | * are more possible fields in the superblock that can fit in a bitfield on a | |
276 | * 32 bit platform. The XFS_SBS_* values for the current current counters just | |
277 | * fit. | |
278 | */ | |
279 | typedef struct xfs_icsb_cnts { | |
280 | uint64_t icsb_fdblocks; | |
281 | uint64_t icsb_ifree; | |
282 | uint64_t icsb_icount; | |
01e1b69c | 283 | unsigned long icsb_flags; |
8d280b98 DC |
284 | } xfs_icsb_cnts_t; |
285 | ||
01e1b69c DC |
286 | #define XFS_ICSB_FLAG_LOCK (1 << 0) /* counter lock bit */ |
287 | ||
8d280b98 DC |
288 | #define XFS_ICSB_SB_LOCKED (1 << 0) /* sb already locked */ |
289 | #define XFS_ICSB_LAZY_COUNT (1 << 1) /* accuracy not needed */ | |
290 | ||
291 | extern int xfs_icsb_init_counters(struct xfs_mount *); | |
292 | extern void xfs_icsb_sync_counters_lazy(struct xfs_mount *); | |
293 | ||
294 | #else | |
295 | #define xfs_icsb_init_counters(mp) (0) | |
296 | #define xfs_icsb_sync_counters_lazy(mp) do { } while (0) | |
297 | #endif | |
1da177e4 LT |
298 | |
299 | typedef struct xfs_mount { | |
300 | bhv_desc_t m_bhv; /* vfs xfs behavior */ | |
301 | xfs_tid_t m_tid; /* next unused tid for fs */ | |
302 | AIL_LOCK_T m_ail_lock; /* fs AIL mutex */ | |
303 | xfs_ail_entry_t m_ail; /* fs active log item list */ | |
304 | uint m_ail_gen; /* fs AIL generation count */ | |
305 | xfs_sb_t m_sb; /* copy of fs superblock */ | |
306 | lock_t m_sb_lock; /* sb counter mutex */ | |
307 | struct xfs_buf *m_sb_bp; /* buffer for superblock */ | |
308 | char *m_fsname; /* filesystem name */ | |
309 | int m_fsname_len; /* strlen of fs name */ | |
fc1f8c1c NS |
310 | char *m_rtname; /* realtime device name */ |
311 | char *m_logname; /* external log device name */ | |
1da177e4 LT |
312 | int m_bsize; /* fs logical block size */ |
313 | xfs_agnumber_t m_agfrotor; /* last ag where space found */ | |
314 | xfs_agnumber_t m_agirotor; /* last ag dir inode alloced */ | |
315 | lock_t m_agirotor_lock;/* .. and lock protecting it */ | |
316 | xfs_agnumber_t m_maxagi; /* highest inode alloc group */ | |
317 | uint m_ihsize; /* size of next field */ | |
318 | struct xfs_ihash *m_ihash; /* fs private inode hash table*/ | |
319 | struct xfs_inode *m_inodes; /* active inode list */ | |
320 | struct list_head m_del_inodes; /* inodes to reclaim */ | |
321 | mutex_t m_ilock; /* inode list mutex */ | |
322 | uint m_ireclaims; /* count of calls to reclaim*/ | |
323 | uint m_readio_log; /* min read size log bytes */ | |
324 | uint m_readio_blocks; /* min read size blocks */ | |
325 | uint m_writeio_log; /* min write size log bytes */ | |
326 | uint m_writeio_blocks; /* min write size blocks */ | |
327 | struct log *m_log; /* log specific stuff */ | |
328 | int m_logbufs; /* number of log buffers */ | |
329 | int m_logbsize; /* size of each log buffer */ | |
330 | uint m_rsumlevels; /* rt summary levels */ | |
331 | uint m_rsumsize; /* size of rt summary, bytes */ | |
332 | struct xfs_inode *m_rbmip; /* pointer to bitmap inode */ | |
333 | struct xfs_inode *m_rsumip; /* pointer to summary inode */ | |
334 | struct xfs_inode *m_rootip; /* pointer to root directory */ | |
335 | struct xfs_quotainfo *m_quotainfo; /* disk quota information */ | |
336 | xfs_buftarg_t *m_ddev_targp; /* saves taking the address */ | |
337 | xfs_buftarg_t *m_logdev_targp;/* ptr to log device */ | |
338 | xfs_buftarg_t *m_rtdev_targp; /* ptr to rt device */ | |
1da177e4 LT |
339 | __uint8_t m_dircook_elog; /* log d-cookie entry bits */ |
340 | __uint8_t m_blkbit_log; /* blocklog + NBBY */ | |
341 | __uint8_t m_blkbb_log; /* blocklog - BBSHIFT */ | |
342 | __uint8_t m_agno_log; /* log #ag's */ | |
343 | __uint8_t m_agino_log; /* #bits for agino in inum */ | |
344 | __uint8_t m_nreadaheads; /* #readahead buffers */ | |
345 | __uint16_t m_inode_cluster_size;/* min inode buf size */ | |
346 | uint m_blockmask; /* sb_blocksize-1 */ | |
347 | uint m_blockwsize; /* sb_blocksize in words */ | |
348 | uint m_blockwmask; /* blockwsize-1 */ | |
349 | uint m_alloc_mxr[2]; /* XFS_ALLOC_BLOCK_MAXRECS */ | |
350 | uint m_alloc_mnr[2]; /* XFS_ALLOC_BLOCK_MINRECS */ | |
351 | uint m_bmap_dmxr[2]; /* XFS_BMAP_BLOCK_DMAXRECS */ | |
352 | uint m_bmap_dmnr[2]; /* XFS_BMAP_BLOCK_DMINRECS */ | |
353 | uint m_inobt_mxr[2]; /* XFS_INOBT_BLOCK_MAXRECS */ | |
354 | uint m_inobt_mnr[2]; /* XFS_INOBT_BLOCK_MINRECS */ | |
355 | uint m_ag_maxlevels; /* XFS_AG_MAXLEVELS */ | |
356 | uint m_bm_maxlevels[2]; /* XFS_BM_MAXLEVELS */ | |
357 | uint m_in_maxlevels; /* XFS_IN_MAXLEVELS */ | |
358 | struct xfs_perag *m_perag; /* per-ag accounting info */ | |
359 | struct rw_semaphore m_peraglock; /* lock for m_perag (pointer) */ | |
360 | sema_t m_growlock; /* growfs mutex */ | |
361 | int m_fixedfsid[2]; /* unchanged for life of FS */ | |
362 | uint m_dmevmask; /* DMI events for this FS */ | |
e718eeb4 | 363 | __uint64_t m_flags; /* global mount flags */ |
1da177e4 LT |
364 | uint m_attroffset; /* inode attribute offset */ |
365 | uint m_dir_node_ents; /* #entries in a dir danode */ | |
366 | uint m_attr_node_ents; /* #entries in attr danode */ | |
367 | int m_ialloc_inos; /* inodes in inode allocation */ | |
368 | int m_ialloc_blks; /* blocks in inode allocation */ | |
369 | int m_litino; /* size of inode union area */ | |
370 | int m_inoalign_mask;/* mask sb_inoalignmt if used */ | |
371 | uint m_qflags; /* quota status flags */ | |
372 | xfs_trans_reservations_t m_reservations;/* precomputed res values */ | |
373 | __uint64_t m_maxicount; /* maximum inode count */ | |
374 | __uint64_t m_maxioffset; /* maximum inode offset */ | |
375 | __uint64_t m_resblks; /* total reserved blocks */ | |
376 | __uint64_t m_resblks_avail;/* available reserved blocks */ | |
377 | #if XFS_BIG_INUMS | |
378 | xfs_ino_t m_inoadd; /* add value for ino64_offset */ | |
379 | #endif | |
380 | int m_dalign; /* stripe unit */ | |
381 | int m_swidth; /* stripe width */ | |
c41564b5 | 382 | int m_sinoalign; /* stripe unit inode alignment */ |
1da177e4 LT |
383 | int m_attr_magicpct;/* 37% of the blocksize */ |
384 | int m_dir_magicpct; /* 37% of the dir blocksize */ | |
385 | __uint8_t m_mk_sharedro; /* mark shared ro on unmount */ | |
386 | __uint8_t m_inode_quiesce;/* call quiesce on new inodes. | |
387 | field governed by m_ilock */ | |
388 | __uint8_t m_sectbb_log; /* sectlog - BBSHIFT */ | |
389 | __uint8_t m_dirversion; /* 1 or 2 */ | |
390 | xfs_dirops_t m_dirops; /* table of dir funcs */ | |
391 | int m_dirblksize; /* directory block sz--bytes */ | |
392 | int m_dirblkfsbs; /* directory block sz--fsbs */ | |
393 | xfs_dablk_t m_dirdatablk; /* blockno of dir data v2 */ | |
394 | xfs_dablk_t m_dirleafblk; /* blockno of dir non-data v2 */ | |
395 | xfs_dablk_t m_dirfreeblk; /* blockno of dirfreeindex v2 */ | |
396 | uint m_chsize; /* size of next field */ | |
397 | struct xfs_chash *m_chash; /* fs private inode per-cluster | |
398 | * hash table */ | |
399 | struct xfs_dmops m_dm_ops; /* vector of DMI ops */ | |
400 | struct xfs_qmops m_qm_ops; /* vector of XQM ops */ | |
401 | struct xfs_ioops m_io_ops; /* vector of I/O ops */ | |
402 | atomic_t m_active_trans; /* number trans frozen */ | |
8d280b98 DC |
403 | #ifdef HAVE_PERCPU_SB |
404 | xfs_icsb_cnts_t *m_sb_cnts; /* per-cpu superblock counters */ | |
405 | unsigned long m_icsb_counters; /* disabled per-cpu counters */ | |
e8234a68 | 406 | struct notifier_block m_icsb_notifier; /* hotplug cpu notifier */ |
8d280b98 | 407 | #endif |
1da177e4 LT |
408 | } xfs_mount_t; |
409 | ||
410 | /* | |
411 | * Flags for m_flags. | |
412 | */ | |
e718eeb4 | 413 | #define XFS_MOUNT_WSYNC (1ULL << 0) /* for nfs - all metadata ops |
1da177e4 LT |
414 | must be synchronous except |
415 | for space allocations */ | |
e718eeb4 NS |
416 | #define XFS_MOUNT_INO64 (1ULL << 1) |
417 | /* (1ULL << 2) -- currently unused */ | |
418 | /* (1ULL << 3) -- currently unused */ | |
419 | #define XFS_MOUNT_FS_SHUTDOWN (1ULL << 4) /* atomic stop of all filesystem | |
1da177e4 LT |
420 | operations, typically for |
421 | disk errors in metadata */ | |
e718eeb4 | 422 | #define XFS_MOUNT_RETERR (1ULL << 6) /* return alignment errors to |
1da177e4 | 423 | user */ |
e718eeb4 | 424 | #define XFS_MOUNT_NOALIGN (1ULL << 7) /* turn off stripe alignment |
1da177e4 | 425 | allocations */ |
13059ff0 | 426 | #define XFS_MOUNT_ATTR2 (1ULL << 8) /* allow use of attr2 format */ |
e718eeb4 NS |
427 | /* (1ULL << 9) -- currently unused */ |
428 | #define XFS_MOUNT_NORECOVERY (1ULL << 10) /* no recovery - dirty fs */ | |
429 | #define XFS_MOUNT_SHARED (1ULL << 11) /* shared mount */ | |
430 | #define XFS_MOUNT_DFLT_IOSIZE (1ULL << 12) /* set default i/o size */ | |
431 | #define XFS_MOUNT_OSYNCISOSYNC (1ULL << 13) /* o_sync is REALLY o_sync */ | |
1da177e4 | 432 | /* osyncisdsync is now default*/ |
e718eeb4 | 433 | #define XFS_MOUNT_32BITINODES (1ULL << 14) /* do not create inodes above |
1da177e4 | 434 | * 32 bits in size */ |
c11e2c36 | 435 | /* (1ULL << 15) -- currently unused */ |
e718eeb4 NS |
436 | #define XFS_MOUNT_NOUUID (1ULL << 16) /* ignore uuid during mount */ |
437 | #define XFS_MOUNT_BARRIER (1ULL << 17) | |
438 | #define XFS_MOUNT_IDELETE (1ULL << 18) /* delete empty inode clusters*/ | |
439 | #define XFS_MOUNT_SWALLOC (1ULL << 19) /* turn on stripe width | |
1da177e4 | 440 | * allocation */ |
e718eeb4 NS |
441 | #define XFS_MOUNT_IHASHSIZE (1ULL << 20) /* inode hash table size */ |
442 | #define XFS_MOUNT_DIRSYNC (1ULL << 21) /* synchronous directory ops */ | |
443 | #define XFS_MOUNT_COMPAT_IOSIZE (1ULL << 22) /* don't report large preferred | |
e8c8b3a7 | 444 | * I/O size in stat() */ |
8d280b98 DC |
445 | #define XFS_MOUNT_NO_PERCPU_SB (1ULL << 23) /* don't use per-cpu superblock |
446 | counters */ | |
e8c8b3a7 | 447 | |
1da177e4 LT |
448 | |
449 | /* | |
450 | * Default minimum read and write sizes. | |
451 | */ | |
452 | #define XFS_READIO_LOG_LARGE 16 | |
453 | #define XFS_WRITEIO_LOG_LARGE 16 | |
454 | ||
455 | /* | |
1f443ad7 NS |
456 | * Max and min values for mount-option defined I/O |
457 | * preallocation sizes. | |
1da177e4 | 458 | */ |
1f443ad7 | 459 | #define XFS_MAX_IO_LOG 30 /* 1G */ |
1da177e4 LT |
460 | #define XFS_MIN_IO_LOG PAGE_SHIFT |
461 | ||
462 | /* | |
463 | * Synchronous read and write sizes. This should be | |
464 | * better for NFSv2 wsync filesystems. | |
465 | */ | |
466 | #define XFS_WSYNC_READIO_LOG 15 /* 32K */ | |
467 | #define XFS_WSYNC_WRITEIO_LOG 14 /* 16K */ | |
468 | ||
e8c8b3a7 DC |
469 | /* |
470 | * Allow large block sizes to be reported to userspace programs if the | |
471 | * "largeio" mount option is used. | |
472 | * | |
473 | * If compatibility mode is specified, simply return the basic unit of caching | |
474 | * so that we don't get inefficient read/modify/write I/O from user apps. | |
475 | * Otherwise.... | |
476 | * | |
477 | * If the underlying volume is a stripe, then return the stripe width in bytes | |
478 | * as the recommended I/O size. It is not a stripe and we've set a default | |
479 | * buffered I/O size, return that, otherwise return the compat default. | |
480 | */ | |
481 | static inline unsigned long | |
482 | xfs_preferred_iosize(xfs_mount_t *mp) | |
483 | { | |
484 | if (mp->m_flags & XFS_MOUNT_COMPAT_IOSIZE) | |
485 | return PAGE_CACHE_SIZE; | |
486 | return (mp->m_swidth ? | |
487 | (mp->m_swidth << mp->m_sb.sb_blocklog) : | |
488 | ((mp->m_flags & XFS_MOUNT_DFLT_IOSIZE) ? | |
489 | (1 << (int)MAX(mp->m_readio_log, mp->m_writeio_log)) : | |
490 | PAGE_CACHE_SIZE)); | |
491 | } | |
492 | ||
1da177e4 LT |
493 | #define XFS_MAXIOFFSET(mp) ((mp)->m_maxioffset) |
494 | ||
495 | #define XFS_FORCED_SHUTDOWN(mp) ((mp)->m_flags & XFS_MOUNT_FS_SHUTDOWN) | |
496 | #define xfs_force_shutdown(m,f) \ | |
497 | VFS_FORCE_SHUTDOWN((XFS_MTOVFS(m)), f, __FILE__, __LINE__) | |
498 | ||
499 | /* | |
500 | * Flags sent to xfs_force_shutdown. | |
501 | */ | |
502 | #define XFS_METADATA_IO_ERROR 0x1 | |
503 | #define XFS_LOG_IO_ERROR 0x2 | |
504 | #define XFS_FORCE_UMOUNT 0x4 | |
505 | #define XFS_CORRUPT_INCORE 0x8 /* Corrupt in-memory data structures */ | |
506 | #define XFS_SHUTDOWN_REMOTE_REQ 0x10 /* Shutdown came from remote cell */ | |
507 | ||
1da177e4 LT |
508 | /* |
509 | * Flags for xfs_mountfs | |
510 | */ | |
511 | #define XFS_MFSI_SECOND 0x01 /* Secondary mount -- skip stuff */ | |
512 | #define XFS_MFSI_CLIENT 0x02 /* Is a client -- skip lots of stuff */ | |
764d1f89 | 513 | /* XFS_MFSI_RRINODES */ |
1da177e4 LT |
514 | #define XFS_MFSI_NOUNLINK 0x08 /* Skip unlinked inode processing in */ |
515 | /* log recovery */ | |
516 | #define XFS_MFSI_NO_QUOTACHECK 0x10 /* Skip quotacheck processing */ | |
764d1f89 NS |
517 | /* XFS_MFSI_CONVERT_SUNIT */ |
518 | #define XFS_MFSI_QUIET 0x40 /* Be silent if mount errors found */ | |
1da177e4 LT |
519 | |
520 | /* | |
521 | * Macros for getting from mount to vfs and back. | |
522 | */ | |
1da177e4 | 523 | #define XFS_MTOVFS(mp) xfs_mtovfs(mp) |
a844f451 NS |
524 | static inline struct vfs *xfs_mtovfs(xfs_mount_t *mp) |
525 | { | |
526 | return bhvtovfs(&mp->m_bhv); | |
527 | } | |
1da177e4 | 528 | |
a844f451 NS |
529 | #define XFS_BHVTOM(bdp) xfs_bhvtom(bdp) |
530 | static inline xfs_mount_t *xfs_bhvtom(bhv_desc_t *bdp) | |
531 | { | |
532 | return (xfs_mount_t *)BHV_PDATA(bdp); | |
533 | } | |
1da177e4 | 534 | |
a844f451 NS |
535 | #define XFS_VFSTOM(vfs) xfs_vfstom(vfs) |
536 | static inline xfs_mount_t *xfs_vfstom(vfs_t *vfs) | |
537 | { | |
538 | return XFS_BHVTOM(bhv_lookup(VFS_BHVHEAD(vfs), &xfs_vfsops)); | |
539 | } | |
1da177e4 | 540 | |
1da177e4 | 541 | #define XFS_DADDR_TO_AGNO(mp,d) xfs_daddr_to_agno(mp,d) |
a844f451 NS |
542 | static inline xfs_agnumber_t |
543 | xfs_daddr_to_agno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 544 | { |
a844f451 NS |
545 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
546 | do_div(ld, mp->m_sb.sb_agblocks); | |
547 | return (xfs_agnumber_t) ld; | |
1da177e4 LT |
548 | } |
549 | ||
1da177e4 | 550 | #define XFS_DADDR_TO_AGBNO(mp,d) xfs_daddr_to_agbno(mp,d) |
a844f451 NS |
551 | static inline xfs_agblock_t |
552 | xfs_daddr_to_agbno(struct xfs_mount *mp, xfs_daddr_t d) | |
1da177e4 | 553 | { |
a844f451 NS |
554 | xfs_daddr_t ld = XFS_BB_TO_FSBT(mp, d); |
555 | return (xfs_agblock_t) do_div(ld, mp->m_sb.sb_agblocks); | |
1da177e4 LT |
556 | } |
557 | ||
1da177e4 LT |
558 | /* |
559 | * This structure is for use by the xfs_mod_incore_sb_batch() routine. | |
560 | */ | |
561 | typedef struct xfs_mod_sb { | |
562 | xfs_sb_field_t msb_field; /* Field to modify, see below */ | |
563 | int msb_delta; /* Change to make to specified field */ | |
564 | } xfs_mod_sb_t; | |
565 | ||
794ee1ba | 566 | #define XFS_MOUNT_ILOCK(mp) mutex_lock(&((mp)->m_ilock)) |
1da177e4 LT |
567 | #define XFS_MOUNT_IUNLOCK(mp) mutex_unlock(&((mp)->m_ilock)) |
568 | #define XFS_SB_LOCK(mp) mutex_spinlock(&(mp)->m_sb_lock) | |
569 | #define XFS_SB_UNLOCK(mp,s) mutex_spinunlock(&(mp)->m_sb_lock,(s)) | |
570 | ||
571 | extern xfs_mount_t *xfs_mount_init(void); | |
572 | extern void xfs_mod_sb(xfs_trans_t *, __int64_t); | |
573 | extern void xfs_mount_free(xfs_mount_t *mp, int remove_bhv); | |
574 | extern int xfs_mountfs(struct vfs *, xfs_mount_t *mp, int); | |
f538d4da | 575 | extern void xfs_mountfs_check_barriers(xfs_mount_t *mp); |
1da177e4 LT |
576 | |
577 | extern int xfs_unmountfs(xfs_mount_t *, struct cred *); | |
1da177e4 LT |
578 | extern void xfs_unmountfs_close(xfs_mount_t *, struct cred *); |
579 | extern int xfs_unmountfs_writesb(xfs_mount_t *); | |
580 | extern int xfs_unmount_flush(xfs_mount_t *, int); | |
581 | extern int xfs_mod_incore_sb(xfs_mount_t *, xfs_sb_field_t, int, int); | |
8d280b98 DC |
582 | extern int xfs_mod_incore_sb_unlocked(xfs_mount_t *, xfs_sb_field_t, |
583 | int, int); | |
1da177e4 LT |
584 | extern int xfs_mod_incore_sb_batch(xfs_mount_t *, xfs_mod_sb_t *, |
585 | uint, int); | |
586 | extern struct xfs_buf *xfs_getsb(xfs_mount_t *, int); | |
764d1f89 | 587 | extern int xfs_readsb(xfs_mount_t *, int); |
1da177e4 LT |
588 | extern void xfs_freesb(xfs_mount_t *); |
589 | extern void xfs_do_force_shutdown(bhv_desc_t *, int, char *, int); | |
590 | extern int xfs_syncsub(xfs_mount_t *, int, int, int *); | |
ee34807a | 591 | extern int xfs_sync_inodes(xfs_mount_t *, int, int, int *); |
c11e2c36 NS |
592 | extern xfs_agnumber_t xfs_initialize_perag(struct vfs *, xfs_mount_t *, |
593 | xfs_agnumber_t); | |
1da177e4 LT |
594 | extern void xfs_xlatesb(void *, struct xfs_sb *, int, __int64_t); |
595 | ||
1da177e4 LT |
596 | extern struct xfs_dmops xfs_dmcore_stub; |
597 | extern struct xfs_qmops xfs_qmcore_stub; | |
598 | extern struct xfs_ioops xfs_iocore_xfs; | |
599 | ||
600 | extern int xfs_init(void); | |
601 | extern void xfs_cleanup(void); | |
602 | ||
603 | #endif /* __KERNEL__ */ | |
604 | ||
605 | #endif /* __XFS_MOUNT_H__ */ |