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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 | 17 | */ |
1da177e4 | 18 | #include "xfs.h" |
a844f451 | 19 | #include "xfs_bit.h" |
1da177e4 | 20 | #include "xfs_log.h" |
a844f451 | 21 | #include "xfs_inum.h" |
1da177e4 | 22 | #include "xfs_sb.h" |
a844f451 | 23 | #include "xfs_ag.h" |
1da177e4 LT |
24 | #include "xfs_dir.h" |
25 | #include "xfs_dir2.h" | |
26 | #include "xfs_trans.h" | |
27 | #include "xfs_dmapi.h" | |
28 | #include "xfs_mount.h" | |
29 | #include "xfs_bmap_btree.h" | |
30 | #include "xfs_alloc_btree.h" | |
31 | #include "xfs_ialloc_btree.h" | |
32 | #include "xfs_alloc.h" | |
33 | #include "xfs_btree.h" | |
34 | #include "xfs_attr_sf.h" | |
35 | #include "xfs_dir_sf.h" | |
36 | #include "xfs_dir2_sf.h" | |
37 | #include "xfs_dinode.h" | |
38 | #include "xfs_inode.h" | |
39 | #include "xfs_error.h" | |
40 | #include "xfs_rw.h" | |
41 | #include "xfs_ioctl32.h" | |
42 | ||
43 | #include <linux/dcache.h> | |
44 | #include <linux/smp_lock.h> | |
45 | ||
46 | static struct vm_operations_struct linvfs_file_vm_ops; | |
6fac0cb4 DR |
47 | #ifdef CONFIG_XFS_DMAPI |
48 | static struct vm_operations_struct linvfs_dmapi_file_vm_ops; | |
49 | #endif | |
1da177e4 LT |
50 | |
51 | STATIC inline ssize_t | |
52 | __linvfs_read( | |
53 | struct kiocb *iocb, | |
54 | char __user *buf, | |
55 | int ioflags, | |
56 | size_t count, | |
57 | loff_t pos) | |
58 | { | |
59 | struct iovec iov = {buf, count}; | |
60 | struct file *file = iocb->ki_filp; | |
61 | vnode_t *vp = LINVFS_GET_VP(file->f_dentry->d_inode); | |
62 | ssize_t rval; | |
63 | ||
64 | BUG_ON(iocb->ki_pos != pos); | |
65 | ||
66 | if (unlikely(file->f_flags & O_DIRECT)) | |
67 | ioflags |= IO_ISDIRECT; | |
68 | VOP_READ(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval); | |
69 | return rval; | |
70 | } | |
71 | ||
72 | ||
73 | STATIC ssize_t | |
74 | linvfs_aio_read( | |
75 | struct kiocb *iocb, | |
76 | char __user *buf, | |
77 | size_t count, | |
78 | loff_t pos) | |
79 | { | |
80 | return __linvfs_read(iocb, buf, IO_ISAIO, count, pos); | |
81 | } | |
82 | ||
83 | STATIC ssize_t | |
84 | linvfs_aio_read_invis( | |
85 | struct kiocb *iocb, | |
86 | char __user *buf, | |
87 | size_t count, | |
88 | loff_t pos) | |
89 | { | |
90 | return __linvfs_read(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); | |
91 | } | |
92 | ||
93 | ||
94 | STATIC inline ssize_t | |
95 | __linvfs_write( | |
96 | struct kiocb *iocb, | |
97 | const char __user *buf, | |
98 | int ioflags, | |
99 | size_t count, | |
100 | loff_t pos) | |
101 | { | |
102 | struct iovec iov = {(void __user *)buf, count}; | |
103 | struct file *file = iocb->ki_filp; | |
104 | struct inode *inode = file->f_mapping->host; | |
105 | vnode_t *vp = LINVFS_GET_VP(inode); | |
106 | ssize_t rval; | |
107 | ||
108 | BUG_ON(iocb->ki_pos != pos); | |
109 | if (unlikely(file->f_flags & O_DIRECT)) | |
110 | ioflags |= IO_ISDIRECT; | |
111 | ||
112 | VOP_WRITE(vp, iocb, &iov, 1, &iocb->ki_pos, ioflags, NULL, rval); | |
113 | return rval; | |
114 | } | |
115 | ||
116 | ||
117 | STATIC ssize_t | |
118 | linvfs_aio_write( | |
119 | struct kiocb *iocb, | |
120 | const char __user *buf, | |
121 | size_t count, | |
122 | loff_t pos) | |
123 | { | |
124 | return __linvfs_write(iocb, buf, IO_ISAIO, count, pos); | |
125 | } | |
126 | ||
127 | STATIC ssize_t | |
128 | linvfs_aio_write_invis( | |
129 | struct kiocb *iocb, | |
130 | const char __user *buf, | |
131 | size_t count, | |
132 | loff_t pos) | |
133 | { | |
134 | return __linvfs_write(iocb, buf, IO_ISAIO|IO_INVIS, count, pos); | |
135 | } | |
136 | ||
137 | ||
138 | STATIC inline ssize_t | |
139 | __linvfs_readv( | |
140 | struct file *file, | |
141 | const struct iovec *iov, | |
142 | int ioflags, | |
143 | unsigned long nr_segs, | |
144 | loff_t *ppos) | |
145 | { | |
146 | struct inode *inode = file->f_mapping->host; | |
147 | vnode_t *vp = LINVFS_GET_VP(inode); | |
148 | struct kiocb kiocb; | |
149 | ssize_t rval; | |
150 | ||
151 | init_sync_kiocb(&kiocb, file); | |
152 | kiocb.ki_pos = *ppos; | |
153 | ||
154 | if (unlikely(file->f_flags & O_DIRECT)) | |
155 | ioflags |= IO_ISDIRECT; | |
156 | VOP_READ(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); | |
157 | ||
158 | *ppos = kiocb.ki_pos; | |
159 | return rval; | |
160 | } | |
161 | ||
162 | STATIC ssize_t | |
163 | linvfs_readv( | |
164 | struct file *file, | |
165 | const struct iovec *iov, | |
166 | unsigned long nr_segs, | |
167 | loff_t *ppos) | |
168 | { | |
169 | return __linvfs_readv(file, iov, 0, nr_segs, ppos); | |
170 | } | |
171 | ||
172 | STATIC ssize_t | |
173 | linvfs_readv_invis( | |
174 | struct file *file, | |
175 | const struct iovec *iov, | |
176 | unsigned long nr_segs, | |
177 | loff_t *ppos) | |
178 | { | |
179 | return __linvfs_readv(file, iov, IO_INVIS, nr_segs, ppos); | |
180 | } | |
181 | ||
182 | ||
183 | STATIC inline ssize_t | |
184 | __linvfs_writev( | |
185 | struct file *file, | |
186 | const struct iovec *iov, | |
187 | int ioflags, | |
188 | unsigned long nr_segs, | |
189 | loff_t *ppos) | |
190 | { | |
191 | struct inode *inode = file->f_mapping->host; | |
192 | vnode_t *vp = LINVFS_GET_VP(inode); | |
193 | struct kiocb kiocb; | |
194 | ssize_t rval; | |
195 | ||
196 | init_sync_kiocb(&kiocb, file); | |
197 | kiocb.ki_pos = *ppos; | |
198 | if (unlikely(file->f_flags & O_DIRECT)) | |
199 | ioflags |= IO_ISDIRECT; | |
200 | ||
201 | VOP_WRITE(vp, &kiocb, iov, nr_segs, &kiocb.ki_pos, ioflags, NULL, rval); | |
202 | ||
203 | *ppos = kiocb.ki_pos; | |
204 | return rval; | |
205 | } | |
206 | ||
207 | ||
208 | STATIC ssize_t | |
209 | linvfs_writev( | |
210 | struct file *file, | |
211 | const struct iovec *iov, | |
212 | unsigned long nr_segs, | |
213 | loff_t *ppos) | |
214 | { | |
215 | return __linvfs_writev(file, iov, 0, nr_segs, ppos); | |
216 | } | |
217 | ||
218 | STATIC ssize_t | |
219 | linvfs_writev_invis( | |
220 | struct file *file, | |
221 | const struct iovec *iov, | |
222 | unsigned long nr_segs, | |
223 | loff_t *ppos) | |
224 | { | |
225 | return __linvfs_writev(file, iov, IO_INVIS, nr_segs, ppos); | |
226 | } | |
227 | ||
228 | STATIC ssize_t | |
229 | linvfs_sendfile( | |
230 | struct file *filp, | |
231 | loff_t *ppos, | |
232 | size_t count, | |
233 | read_actor_t actor, | |
234 | void *target) | |
235 | { | |
236 | vnode_t *vp = LINVFS_GET_VP(filp->f_dentry->d_inode); | |
237 | ssize_t rval; | |
238 | ||
239 | VOP_SENDFILE(vp, filp, ppos, 0, count, actor, target, NULL, rval); | |
240 | return rval; | |
241 | } | |
242 | ||
243 | ||
244 | STATIC int | |
245 | linvfs_open( | |
246 | struct inode *inode, | |
247 | struct file *filp) | |
248 | { | |
249 | vnode_t *vp = LINVFS_GET_VP(inode); | |
250 | int error; | |
251 | ||
252 | if (!(filp->f_flags & O_LARGEFILE) && i_size_read(inode) > MAX_NON_LFS) | |
253 | return -EFBIG; | |
254 | ||
255 | ASSERT(vp); | |
256 | VOP_OPEN(vp, NULL, error); | |
257 | return -error; | |
258 | } | |
259 | ||
260 | ||
261 | STATIC int | |
262 | linvfs_release( | |
263 | struct inode *inode, | |
264 | struct file *filp) | |
265 | { | |
266 | vnode_t *vp = LINVFS_GET_VP(inode); | |
267 | int error = 0; | |
268 | ||
269 | if (vp) | |
270 | VOP_RELEASE(vp, error); | |
271 | return -error; | |
272 | } | |
273 | ||
274 | ||
275 | STATIC int | |
276 | linvfs_fsync( | |
277 | struct file *filp, | |
278 | struct dentry *dentry, | |
279 | int datasync) | |
280 | { | |
281 | struct inode *inode = dentry->d_inode; | |
282 | vnode_t *vp = LINVFS_GET_VP(inode); | |
283 | int error; | |
284 | int flags = FSYNC_WAIT; | |
285 | ||
286 | if (datasync) | |
287 | flags |= FSYNC_DATA; | |
288 | ||
289 | ASSERT(vp); | |
290 | VOP_FSYNC(vp, flags, NULL, (xfs_off_t)0, (xfs_off_t)-1, error); | |
291 | return -error; | |
292 | } | |
293 | ||
294 | /* | |
295 | * linvfs_readdir maps to VOP_READDIR(). | |
296 | * We need to build a uio, cred, ... | |
297 | */ | |
298 | ||
299 | #define nextdp(dp) ((struct xfs_dirent *)((char *)(dp) + (dp)->d_reclen)) | |
300 | ||
bb3f724e DR |
301 | #ifdef CONFIG_XFS_DMAPI |
302 | ||
303 | STATIC struct page * | |
304 | linvfs_filemap_nopage( | |
305 | struct vm_area_struct *area, | |
306 | unsigned long address, | |
307 | int *type) | |
308 | { | |
309 | struct inode *inode = area->vm_file->f_dentry->d_inode; | |
310 | vnode_t *vp = LINVFS_GET_VP(inode); | |
311 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); | |
312 | int error; | |
313 | ||
314 | ASSERT_ALWAYS(vp->v_vfsp->vfs_flag & VFS_DMI); | |
315 | ||
316 | error = XFS_SEND_MMAP(mp, area, 0); | |
317 | if (error) | |
318 | return NULL; | |
319 | ||
320 | return filemap_nopage(area, address, type); | |
321 | } | |
322 | ||
323 | #endif /* CONFIG_XFS_DMAPI */ | |
324 | ||
325 | ||
1da177e4 LT |
326 | STATIC int |
327 | linvfs_readdir( | |
328 | struct file *filp, | |
329 | void *dirent, | |
330 | filldir_t filldir) | |
331 | { | |
332 | int error = 0; | |
333 | vnode_t *vp; | |
334 | uio_t uio; | |
335 | iovec_t iov; | |
336 | int eof = 0; | |
337 | caddr_t read_buf; | |
338 | int namelen, size = 0; | |
339 | size_t rlen = PAGE_CACHE_SIZE; | |
340 | xfs_off_t start_offset, curr_offset; | |
341 | xfs_dirent_t *dbp = NULL; | |
342 | ||
343 | vp = LINVFS_GET_VP(filp->f_dentry->d_inode); | |
344 | ASSERT(vp); | |
345 | ||
346 | /* Try fairly hard to get memory */ | |
347 | do { | |
348 | if ((read_buf = (caddr_t)kmalloc(rlen, GFP_KERNEL))) | |
349 | break; | |
350 | rlen >>= 1; | |
351 | } while (rlen >= 1024); | |
352 | ||
353 | if (read_buf == NULL) | |
354 | return -ENOMEM; | |
355 | ||
356 | uio.uio_iov = &iov; | |
357 | uio.uio_segflg = UIO_SYSSPACE; | |
358 | curr_offset = filp->f_pos; | |
359 | if (filp->f_pos != 0x7fffffff) | |
360 | uio.uio_offset = filp->f_pos; | |
361 | else | |
362 | uio.uio_offset = 0xffffffff; | |
363 | ||
364 | while (!eof) { | |
365 | uio.uio_resid = iov.iov_len = rlen; | |
366 | iov.iov_base = read_buf; | |
367 | uio.uio_iovcnt = 1; | |
368 | ||
369 | start_offset = uio.uio_offset; | |
370 | ||
371 | VOP_READDIR(vp, &uio, NULL, &eof, error); | |
372 | if ((uio.uio_offset == start_offset) || error) { | |
373 | size = 0; | |
374 | break; | |
375 | } | |
376 | ||
377 | size = rlen - uio.uio_resid; | |
378 | dbp = (xfs_dirent_t *)read_buf; | |
379 | while (size > 0) { | |
380 | namelen = strlen(dbp->d_name); | |
381 | ||
382 | if (filldir(dirent, dbp->d_name, namelen, | |
383 | (loff_t) curr_offset & 0x7fffffff, | |
384 | (ino_t) dbp->d_ino, | |
385 | DT_UNKNOWN)) { | |
386 | goto done; | |
387 | } | |
388 | size -= dbp->d_reclen; | |
389 | curr_offset = (loff_t)dbp->d_off /* & 0x7fffffff */; | |
390 | dbp = nextdp(dbp); | |
391 | } | |
392 | } | |
393 | done: | |
394 | if (!error) { | |
395 | if (size == 0) | |
396 | filp->f_pos = uio.uio_offset & 0x7fffffff; | |
397 | else if (dbp) | |
398 | filp->f_pos = curr_offset; | |
399 | } | |
400 | ||
401 | kfree(read_buf); | |
402 | return -error; | |
403 | } | |
404 | ||
405 | ||
406 | STATIC int | |
407 | linvfs_file_mmap( | |
408 | struct file *filp, | |
409 | struct vm_area_struct *vma) | |
410 | { | |
411 | struct inode *ip = filp->f_dentry->d_inode; | |
412 | vnode_t *vp = LINVFS_GET_VP(ip); | |
413 | vattr_t va = { .va_mask = XFS_AT_UPDATIME }; | |
414 | int error; | |
415 | ||
6fac0cb4 DR |
416 | vma->vm_ops = &linvfs_file_vm_ops; |
417 | ||
6fac0cb4 | 418 | #ifdef CONFIG_XFS_DMAPI |
bb3f724e | 419 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { |
6fac0cb4 | 420 | vma->vm_ops = &linvfs_dmapi_file_vm_ops; |
1da177e4 | 421 | } |
bb3f724e | 422 | #endif /* CONFIG_XFS_DMAPI */ |
1da177e4 | 423 | |
1da177e4 LT |
424 | VOP_SETATTR(vp, &va, XFS_AT_UPDATIME, NULL, error); |
425 | if (!error) | |
426 | vn_revalidate(vp); /* update Linux inode flags */ | |
427 | return 0; | |
428 | } | |
429 | ||
430 | ||
431 | STATIC long | |
432 | linvfs_ioctl( | |
433 | struct file *filp, | |
434 | unsigned int cmd, | |
435 | unsigned long arg) | |
436 | { | |
437 | int error; | |
438 | struct inode *inode = filp->f_dentry->d_inode; | |
439 | vnode_t *vp = LINVFS_GET_VP(inode); | |
440 | ||
441 | VOP_IOCTL(vp, inode, filp, 0, cmd, (void __user *)arg, error); | |
442 | VMODIFY(vp); | |
443 | ||
444 | /* NOTE: some of the ioctl's return positive #'s as a | |
445 | * byte count indicating success, such as | |
446 | * readlink_by_handle. So we don't "sign flip" | |
447 | * like most other routines. This means true | |
448 | * errors need to be returned as a negative value. | |
449 | */ | |
450 | return error; | |
451 | } | |
452 | ||
453 | STATIC long | |
454 | linvfs_ioctl_invis( | |
455 | struct file *filp, | |
456 | unsigned int cmd, | |
457 | unsigned long arg) | |
458 | { | |
459 | int error; | |
460 | struct inode *inode = filp->f_dentry->d_inode; | |
461 | vnode_t *vp = LINVFS_GET_VP(inode); | |
462 | ||
463 | ASSERT(vp); | |
464 | VOP_IOCTL(vp, inode, filp, IO_INVIS, cmd, (void __user *)arg, error); | |
465 | VMODIFY(vp); | |
466 | ||
467 | /* NOTE: some of the ioctl's return positive #'s as a | |
468 | * byte count indicating success, such as | |
469 | * readlink_by_handle. So we don't "sign flip" | |
470 | * like most other routines. This means true | |
471 | * errors need to be returned as a negative value. | |
472 | */ | |
473 | return error; | |
474 | } | |
475 | ||
bb3f724e | 476 | #ifdef CONFIG_XFS_DMAPI |
1da177e4 LT |
477 | #ifdef HAVE_VMOP_MPROTECT |
478 | STATIC int | |
479 | linvfs_mprotect( | |
480 | struct vm_area_struct *vma, | |
481 | unsigned int newflags) | |
482 | { | |
483 | vnode_t *vp = LINVFS_GET_VP(vma->vm_file->f_dentry->d_inode); | |
484 | int error = 0; | |
485 | ||
486 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { | |
487 | if ((vma->vm_flags & VM_MAYSHARE) && | |
488 | (newflags & VM_WRITE) && !(vma->vm_flags & VM_WRITE)) { | |
489 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); | |
490 | ||
491 | error = XFS_SEND_MMAP(mp, vma, VM_WRITE); | |
492 | } | |
493 | } | |
494 | return error; | |
495 | } | |
496 | #endif /* HAVE_VMOP_MPROTECT */ | |
bb3f724e | 497 | #endif /* CONFIG_XFS_DMAPI */ |
1da177e4 LT |
498 | |
499 | #ifdef HAVE_FOP_OPEN_EXEC | |
500 | /* If the user is attempting to execute a file that is offline then | |
501 | * we have to trigger a DMAPI READ event before the file is marked as busy | |
502 | * otherwise the invisible I/O will not be able to write to the file to bring | |
503 | * it back online. | |
504 | */ | |
505 | STATIC int | |
506 | linvfs_open_exec( | |
507 | struct inode *inode) | |
508 | { | |
509 | vnode_t *vp = LINVFS_GET_VP(inode); | |
510 | xfs_mount_t *mp = XFS_VFSTOM(vp->v_vfsp); | |
511 | int error = 0; | |
512 | bhv_desc_t *bdp; | |
513 | xfs_inode_t *ip; | |
514 | ||
515 | if (vp->v_vfsp->vfs_flag & VFS_DMI) { | |
516 | bdp = vn_bhv_lookup(VN_BHV_HEAD(vp), &xfs_vnodeops); | |
517 | if (!bdp) { | |
518 | error = -EINVAL; | |
519 | goto open_exec_out; | |
520 | } | |
521 | ip = XFS_BHVTOI(bdp); | |
522 | if (DM_EVENT_ENABLED(vp->v_vfsp, ip, DM_EVENT_READ)) { | |
523 | error = -XFS_SEND_DATA(mp, DM_EVENT_READ, vp, | |
524 | 0, 0, 0, NULL); | |
525 | } | |
526 | } | |
527 | open_exec_out: | |
528 | return error; | |
529 | } | |
530 | #endif /* HAVE_FOP_OPEN_EXEC */ | |
531 | ||
532 | struct file_operations linvfs_file_operations = { | |
533 | .llseek = generic_file_llseek, | |
534 | .read = do_sync_read, | |
bb3f724e | 535 | .write = do_sync_write, |
1da177e4 LT |
536 | .readv = linvfs_readv, |
537 | .writev = linvfs_writev, | |
538 | .aio_read = linvfs_aio_read, | |
539 | .aio_write = linvfs_aio_write, | |
540 | .sendfile = linvfs_sendfile, | |
541 | .unlocked_ioctl = linvfs_ioctl, | |
542 | #ifdef CONFIG_COMPAT | |
d3870398 | 543 | .compat_ioctl = linvfs_compat_ioctl, |
1da177e4 LT |
544 | #endif |
545 | .mmap = linvfs_file_mmap, | |
546 | .open = linvfs_open, | |
547 | .release = linvfs_release, | |
548 | .fsync = linvfs_fsync, | |
549 | #ifdef HAVE_FOP_OPEN_EXEC | |
550 | .open_exec = linvfs_open_exec, | |
551 | #endif | |
552 | }; | |
553 | ||
554 | struct file_operations linvfs_invis_file_operations = { | |
555 | .llseek = generic_file_llseek, | |
556 | .read = do_sync_read, | |
bb3f724e | 557 | .write = do_sync_write, |
1da177e4 LT |
558 | .readv = linvfs_readv_invis, |
559 | .writev = linvfs_writev_invis, | |
560 | .aio_read = linvfs_aio_read_invis, | |
561 | .aio_write = linvfs_aio_write_invis, | |
562 | .sendfile = linvfs_sendfile, | |
563 | .unlocked_ioctl = linvfs_ioctl_invis, | |
564 | #ifdef CONFIG_COMPAT | |
d3870398 | 565 | .compat_ioctl = linvfs_compat_invis_ioctl, |
1da177e4 LT |
566 | #endif |
567 | .mmap = linvfs_file_mmap, | |
568 | .open = linvfs_open, | |
569 | .release = linvfs_release, | |
570 | .fsync = linvfs_fsync, | |
571 | }; | |
572 | ||
573 | ||
574 | struct file_operations linvfs_dir_operations = { | |
575 | .read = generic_read_dir, | |
576 | .readdir = linvfs_readdir, | |
577 | .unlocked_ioctl = linvfs_ioctl, | |
d3870398 NS |
578 | #ifdef CONFIG_COMPAT |
579 | .compat_ioctl = linvfs_compat_ioctl, | |
580 | #endif | |
1da177e4 LT |
581 | .fsync = linvfs_fsync, |
582 | }; | |
583 | ||
584 | static struct vm_operations_struct linvfs_file_vm_ops = { | |
585 | .nopage = filemap_nopage, | |
586 | .populate = filemap_populate, | |
6fac0cb4 DR |
587 | }; |
588 | ||
589 | #ifdef CONFIG_XFS_DMAPI | |
590 | static struct vm_operations_struct linvfs_dmapi_file_vm_ops = { | |
bb3f724e | 591 | .nopage = linvfs_filemap_nopage, |
6fac0cb4 | 592 | .populate = filemap_populate, |
1da177e4 LT |
593 | #ifdef HAVE_VMOP_MPROTECT |
594 | .mprotect = linvfs_mprotect, | |
595 | #endif | |
596 | }; | |
6fac0cb4 | 597 | #endif /* CONFIG_XFS_DMAPI */ |