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13#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
14
15#include <linux/capability.h>
16#include <linux/kernel.h>
17#include <linux/sched.h>
18#include <linux/fs.h>
19#include <linux/list.h>
20#include <linux/mtd/mtd.h>
21#include <linux/pagemap.h>
22#include <linux/slab.h>
23#include <linux/vmalloc.h>
24#include <linux/vfs.h>
25#include <linux/crc32.h>
26#include "nodelist.h"
27
28static int jffs2_flash_setup(struct jffs2_sb_info *c);
29
30int jffs2_do_setattr (struct inode *inode, struct iattr *iattr)
31{
32 struct jffs2_full_dnode *old_metadata, *new_metadata;
33 struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
34 struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
35 struct jffs2_raw_inode *ri;
36 union jffs2_device_node dev;
37 unsigned char *mdata = NULL;
38 int mdatalen = 0;
39 unsigned int ivalid;
40 uint32_t alloclen;
41 int ret;
42 int alloc_type = ALLOC_NORMAL;
43
44 jffs2_dbg(1, "%s(): ino #%lu\n", __func__, inode->i_ino);
45
46
47
48
49
50
51 if (S_ISBLK(inode->i_mode) || S_ISCHR(inode->i_mode)) {
52
53 mdatalen = jffs2_encode_dev(&dev, inode->i_rdev);
54 mdata = (char *)&dev;
55 jffs2_dbg(1, "%s(): Writing %d bytes of kdev_t\n",
56 __func__, mdatalen);
57 } else if (S_ISLNK(inode->i_mode)) {
58 mutex_lock(&f->sem);
59 mdatalen = f->metadata->size;
60 mdata = kmalloc(f->metadata->size, GFP_USER);
61 if (!mdata) {
62 mutex_unlock(&f->sem);
63 return -ENOMEM;
64 }
65 ret = jffs2_read_dnode(c, f, f->metadata, mdata, 0, mdatalen);
66 if (ret) {
67 mutex_unlock(&f->sem);
68 kfree(mdata);
69 return ret;
70 }
71 mutex_unlock(&f->sem);
72 jffs2_dbg(1, "%s(): Writing %d bytes of symlink target\n",
73 __func__, mdatalen);
74 }
75
76 ri = jffs2_alloc_raw_inode();
77 if (!ri) {
78 if (S_ISLNK(inode->i_mode))
79 kfree(mdata);
80 return -ENOMEM;
81 }
82
83 ret = jffs2_reserve_space(c, sizeof(*ri) + mdatalen, &alloclen,
84 ALLOC_NORMAL, JFFS2_SUMMARY_INODE_SIZE);
85 if (ret) {
86 jffs2_free_raw_inode(ri);
87 if (S_ISLNK(inode->i_mode))
88 kfree(mdata);
89 return ret;
90 }
91 mutex_lock(&f->sem);
92 ivalid = iattr->ia_valid;
93
94 ri->magic = cpu_to_je16(JFFS2_MAGIC_BITMASK);
95 ri->nodetype = cpu_to_je16(JFFS2_NODETYPE_INODE);
96 ri->totlen = cpu_to_je32(sizeof(*ri) + mdatalen);
97 ri->hdr_crc = cpu_to_je32(crc32(0, ri, sizeof(struct jffs2_unknown_node)-4));
98
99 ri->ino = cpu_to_je32(inode->i_ino);
100 ri->version = cpu_to_je32(++f->highest_version);
101
102 ri->uid = cpu_to_je16((ivalid & ATTR_UID)?
103 from_kuid(&init_user_ns, iattr->ia_uid):i_uid_read(inode));
104 ri->gid = cpu_to_je16((ivalid & ATTR_GID)?
105 from_kgid(&init_user_ns, iattr->ia_gid):i_gid_read(inode));
106
107 if (ivalid & ATTR_MODE)
108 ri->mode = cpu_to_jemode(iattr->ia_mode);
109 else
110 ri->mode = cpu_to_jemode(inode->i_mode);
111
112
113 ri->isize = cpu_to_je32((ivalid & ATTR_SIZE)?iattr->ia_size:inode->i_size);
114 ri->atime = cpu_to_je32(I_SEC((ivalid & ATTR_ATIME)?iattr->ia_atime:inode->i_atime));
115 ri->mtime = cpu_to_je32(I_SEC((ivalid & ATTR_MTIME)?iattr->ia_mtime:inode->i_mtime));
116 ri->ctime = cpu_to_je32(I_SEC((ivalid & ATTR_CTIME)?iattr->ia_ctime:inode->i_ctime));
117
118 ri->offset = cpu_to_je32(0);
119 ri->csize = ri->dsize = cpu_to_je32(mdatalen);
120 ri->compr = JFFS2_COMPR_NONE;
121 if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
122
123 ri->compr = JFFS2_COMPR_ZERO;
124 ri->dsize = cpu_to_je32(iattr->ia_size - inode->i_size);
125 ri->offset = cpu_to_je32(inode->i_size);
126 } else if (ivalid & ATTR_SIZE && !iattr->ia_size) {
127
128
129 alloc_type = ALLOC_DELETION;
130 }
131 ri->node_crc = cpu_to_je32(crc32(0, ri, sizeof(*ri)-8));
132 if (mdatalen)
133 ri->data_crc = cpu_to_je32(crc32(0, mdata, mdatalen));
134 else
135 ri->data_crc = cpu_to_je32(0);
136
137 new_metadata = jffs2_write_dnode(c, f, ri, mdata, mdatalen, alloc_type);
138 if (S_ISLNK(inode->i_mode))
139 kfree(mdata);
140
141 if (IS_ERR(new_metadata)) {
142 jffs2_complete_reservation(c);
143 jffs2_free_raw_inode(ri);
144 mutex_unlock(&f->sem);
145 return PTR_ERR(new_metadata);
146 }
147
148 inode->i_atime = ITIME(je32_to_cpu(ri->atime));
149 inode->i_ctime = ITIME(je32_to_cpu(ri->ctime));
150 inode->i_mtime = ITIME(je32_to_cpu(ri->mtime));
151 inode->i_mode = jemode_to_cpu(ri->mode);
152 i_uid_write(inode, je16_to_cpu(ri->uid));
153 i_gid_write(inode, je16_to_cpu(ri->gid));
154
155
156 old_metadata = f->metadata;
157
158 if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size)
159 jffs2_truncate_fragtree (c, &f->fragtree, iattr->ia_size);
160
161 if (ivalid & ATTR_SIZE && inode->i_size < iattr->ia_size) {
162 jffs2_add_full_dnode_to_inode(c, f, new_metadata);
163 inode->i_size = iattr->ia_size;
164 inode->i_blocks = (inode->i_size + 511) >> 9;
165 f->metadata = NULL;
166 } else {
167 f->metadata = new_metadata;
168 }
169 if (old_metadata) {
170 jffs2_mark_node_obsolete(c, old_metadata->raw);
171 jffs2_free_full_dnode(old_metadata);
172 }
173 jffs2_free_raw_inode(ri);
174
175 mutex_unlock(&f->sem);
176 jffs2_complete_reservation(c);
177
178
179
180
181
182
183 if (ivalid & ATTR_SIZE && inode->i_size > iattr->ia_size) {
184 truncate_setsize(inode, iattr->ia_size);
185 inode->i_blocks = (inode->i_size + 511) >> 9;
186 }
187
188 return 0;
189}
190
191int jffs2_setattr(struct dentry *dentry, struct iattr *iattr)
192{
193 struct inode *inode = d_inode(dentry);
194 int rc;
195
196 rc = inode_change_ok(inode, iattr);
197 if (rc)
198 return rc;
199
200 rc = jffs2_do_setattr(inode, iattr);
201 if (!rc && (iattr->ia_valid & ATTR_MODE))
202 rc = posix_acl_chmod(inode, inode->i_mode);
203
204 return rc;
205}
206
207int jffs2_statfs(struct dentry *dentry, struct kstatfs *buf)
208{
209 struct jffs2_sb_info *c = JFFS2_SB_INFO(dentry->d_sb);
210 unsigned long avail;
211
212 buf->f_type = JFFS2_SUPER_MAGIC;
213 buf->f_bsize = 1 << PAGE_SHIFT;
214 buf->f_blocks = c->flash_size >> PAGE_SHIFT;
215 buf->f_files = 0;
216 buf->f_ffree = 0;
217 buf->f_namelen = JFFS2_MAX_NAME_LEN;
218 buf->f_fsid.val[0] = JFFS2_SUPER_MAGIC;
219 buf->f_fsid.val[1] = c->mtd->index;
220
221 spin_lock(&c->erase_completion_lock);
222 avail = c->dirty_size + c->free_size;
223 if (avail > c->sector_size * c->resv_blocks_write)
224 avail -= c->sector_size * c->resv_blocks_write;
225 else
226 avail = 0;
227 spin_unlock(&c->erase_completion_lock);
228
229 buf->f_bavail = buf->f_bfree = avail >> PAGE_SHIFT;
230
231 return 0;
232}
233
234
235void jffs2_evict_inode (struct inode *inode)
236{
237
238
239
240 struct jffs2_sb_info *c = JFFS2_SB_INFO(inode->i_sb);
241 struct jffs2_inode_info *f = JFFS2_INODE_INFO(inode);
242
243 jffs2_dbg(1, "%s(): ino #%lu mode %o\n",
244 __func__, inode->i_ino, inode->i_mode);
245 truncate_inode_pages_final(&inode->i_data);
246 clear_inode(inode);
247 jffs2_do_clear_inode(c, f);
248}
249
250struct inode *jffs2_iget(struct super_block *sb, unsigned long ino)
251{
252 struct jffs2_inode_info *f;
253 struct jffs2_sb_info *c;
254 struct jffs2_raw_inode latest_node;
255 union jffs2_device_node jdev;
256 struct inode *inode;
257 dev_t rdev = 0;
258 int ret;
259
260 jffs2_dbg(1, "%s(): ino == %lu\n", __func__, ino);
261
262 inode = iget_locked(sb, ino);
263 if (!inode)
264 return ERR_PTR(-ENOMEM);
265 if (!(inode->i_state & I_NEW))
266 return inode;
267
268 f = JFFS2_INODE_INFO(inode);
269 c = JFFS2_SB_INFO(inode->i_sb);
270
271 jffs2_init_inode_info(f);
272 mutex_lock(&f->sem);
273
274 ret = jffs2_do_read_inode(c, f, inode->i_ino, &latest_node);
275 if (ret)
276 goto error;
277
278 inode->i_mode = jemode_to_cpu(latest_node.mode);
279 i_uid_write(inode, je16_to_cpu(latest_node.uid));
280 i_gid_write(inode, je16_to_cpu(latest_node.gid));
281 inode->i_size = je32_to_cpu(latest_node.isize);
282 inode->i_atime = ITIME(je32_to_cpu(latest_node.atime));
283 inode->i_mtime = ITIME(je32_to_cpu(latest_node.mtime));
284 inode->i_ctime = ITIME(je32_to_cpu(latest_node.ctime));
285
286 set_nlink(inode, f->inocache->pino_nlink);
287
288 inode->i_blocks = (inode->i_size + 511) >> 9;
289
290 switch (inode->i_mode & S_IFMT) {
291
292 case S_IFLNK:
293 inode->i_op = &jffs2_symlink_inode_operations;
294 inode->i_link = f->target;
295 break;
296
297 case S_IFDIR:
298 {
299 struct jffs2_full_dirent *fd;
300 set_nlink(inode, 2);
301
302 for (fd=f->dents; fd; fd = fd->next) {
303 if (fd->type == DT_DIR && fd->ino)
304 inc_nlink(inode);
305 }
306
307 if (inode->i_ino == 1)
308 inc_nlink(inode);
309
310 inode->i_op = &jffs2_dir_inode_operations;
311 inode->i_fop = &jffs2_dir_operations;
312 break;
313 }
314 case S_IFREG:
315 inode->i_op = &jffs2_file_inode_operations;
316 inode->i_fop = &jffs2_file_operations;
317 inode->i_mapping->a_ops = &jffs2_file_address_operations;
318 inode->i_mapping->nrpages = 0;
319 break;
320
321 case S_IFBLK:
322 case S_IFCHR:
323
324 if (f->metadata->size != sizeof(jdev.old_id) &&
325 f->metadata->size != sizeof(jdev.new_id)) {
326 pr_notice("Device node has strange size %d\n",
327 f->metadata->size);
328 goto error_io;
329 }
330 jffs2_dbg(1, "Reading device numbers from flash\n");
331 ret = jffs2_read_dnode(c, f, f->metadata, (char *)&jdev, 0, f->metadata->size);
332 if (ret < 0) {
333
334 pr_notice("Read device numbers for inode %lu failed\n",
335 (unsigned long)inode->i_ino);
336 goto error;
337 }
338 if (f->metadata->size == sizeof(jdev.old_id))
339 rdev = old_decode_dev(je16_to_cpu(jdev.old_id));
340 else
341 rdev = new_decode_dev(je32_to_cpu(jdev.new_id));
342
343 case S_IFSOCK:
344 case S_IFIFO:
345 inode->i_op = &jffs2_file_inode_operations;
346 init_special_inode(inode, inode->i_mode, rdev);
347 break;
348
349 default:
350 pr_warn("%s(): Bogus i_mode %o for ino %lu\n",
351 __func__, inode->i_mode, (unsigned long)inode->i_ino);
352 }
353
354 mutex_unlock(&f->sem);
355
356 jffs2_dbg(1, "jffs2_read_inode() returning\n");
357 unlock_new_inode(inode);
358 return inode;
359
360error_io:
361 ret = -EIO;
362error:
363 mutex_unlock(&f->sem);
364 jffs2_do_clear_inode(c, f);
365 iget_failed(inode);
366 return ERR_PTR(ret);
367}
368
369void jffs2_dirty_inode(struct inode *inode, int flags)
370{
371 struct iattr iattr;
372
373 if (!(inode->i_state & I_DIRTY_DATASYNC)) {
374 jffs2_dbg(2, "%s(): not calling setattr() for ino #%lu\n",
375 __func__, inode->i_ino);
376 return;
377 }
378
379 jffs2_dbg(1, "%s(): calling setattr() for ino #%lu\n",
380 __func__, inode->i_ino);
381
382 iattr.ia_valid = ATTR_MODE|ATTR_UID|ATTR_GID|ATTR_ATIME|ATTR_MTIME|ATTR_CTIME;
383 iattr.ia_mode = inode->i_mode;
384 iattr.ia_uid = inode->i_uid;
385 iattr.ia_gid = inode->i_gid;
386 iattr.ia_atime = inode->i_atime;
387 iattr.ia_mtime = inode->i_mtime;
388 iattr.ia_ctime = inode->i_ctime;
389
390 jffs2_do_setattr(inode, &iattr);
391}
392
393int jffs2_do_remount_fs(struct super_block *sb, int *flags, char *data)
394{
395 struct jffs2_sb_info *c = JFFS2_SB_INFO(sb);
396
397 if (c->flags & JFFS2_SB_FLAG_RO && !(sb->s_flags & MS_RDONLY))
398 return -EROFS;
399
400
401
402
403
404 if (!(sb->s_flags & MS_RDONLY)) {
405 jffs2_stop_garbage_collect_thread(c);
406 mutex_lock(&c->alloc_sem);
407 jffs2_flush_wbuf_pad(c);
408 mutex_unlock(&c->alloc_sem);
409 }
410
411 if (!(*flags & MS_RDONLY))
412 jffs2_start_garbage_collect_thread(c);
413
414 *flags |= MS_NOATIME;
415 return 0;
416}
417
418
419
420struct inode *jffs2_new_inode (struct inode *dir_i, umode_t mode, struct jffs2_raw_inode *ri)
421{
422 struct inode *inode;
423 struct super_block *sb = dir_i->i_sb;
424 struct jffs2_sb_info *c;
425 struct jffs2_inode_info *f;
426 int ret;
427
428 jffs2_dbg(1, "%s(): dir_i %ld, mode 0x%x\n",
429 __func__, dir_i->i_ino, mode);
430
431 c = JFFS2_SB_INFO(sb);
432
433 inode = new_inode(sb);
434
435 if (!inode)
436 return ERR_PTR(-ENOMEM);
437
438 f = JFFS2_INODE_INFO(inode);
439 jffs2_init_inode_info(f);
440 mutex_lock(&f->sem);
441
442 memset(ri, 0, sizeof(*ri));
443
444 ri->uid = cpu_to_je16(from_kuid(&init_user_ns, current_fsuid()));
445
446 if (dir_i->i_mode & S_ISGID) {
447 ri->gid = cpu_to_je16(i_gid_read(dir_i));
448 if (S_ISDIR(mode))
449 mode |= S_ISGID;
450 } else {
451 ri->gid = cpu_to_je16(from_kgid(&init_user_ns, current_fsgid()));
452 }
453
454
455
456 ret = jffs2_init_acl_pre(dir_i, inode, &mode);
457 if (ret) {
458 mutex_unlock(&f->sem);
459 make_bad_inode(inode);
460 iput(inode);
461 return ERR_PTR(ret);
462 }
463 ret = jffs2_do_new_inode (c, f, mode, ri);
464 if (ret) {
465 mutex_unlock(&f->sem);
466 make_bad_inode(inode);
467 iput(inode);
468 return ERR_PTR(ret);
469 }
470 set_nlink(inode, 1);
471 inode->i_ino = je32_to_cpu(ri->ino);
472 inode->i_mode = jemode_to_cpu(ri->mode);
473 i_gid_write(inode, je16_to_cpu(ri->gid));
474 i_uid_write(inode, je16_to_cpu(ri->uid));
475 inode->i_atime = inode->i_ctime = inode->i_mtime = CURRENT_TIME_SEC;
476 ri->atime = ri->mtime = ri->ctime = cpu_to_je32(I_SEC(inode->i_mtime));
477
478 inode->i_blocks = 0;
479 inode->i_size = 0;
480
481 if (insert_inode_locked(inode) < 0) {
482 mutex_unlock(&f->sem);
483 make_bad_inode(inode);
484 iput(inode);
485 return ERR_PTR(-EINVAL);
486 }
487
488 return inode;
489}
490
491static int calculate_inocache_hashsize(uint32_t flash_size)
492{
493
494
495
496
497
498
499
500 int size_mb = flash_size / 1024 / 1024;
501 int hashsize = (size_mb * 2) & ~0x3f;
502
503 if (hashsize < INOCACHE_HASHSIZE_MIN)
504 return INOCACHE_HASHSIZE_MIN;
505 if (hashsize > INOCACHE_HASHSIZE_MAX)
506 return INOCACHE_HASHSIZE_MAX;
507
508 return hashsize;
509}
510
511int jffs2_do_fill_super(struct super_block *sb, void *data, int silent)
512{
513 struct jffs2_sb_info *c;
514 struct inode *root_i;
515 int ret;
516 size_t blocks;
517
518 c = JFFS2_SB_INFO(sb);
519
520
521 if (c->mtd->type == MTD_MLCNANDFLASH)
522 return -EINVAL;
523
524#ifndef CONFIG_JFFS2_FS_WRITEBUFFER
525 if (c->mtd->type == MTD_NANDFLASH) {
526 pr_err("Cannot operate on NAND flash unless jffs2 NAND support is compiled in\n");
527 return -EINVAL;
528 }
529 if (c->mtd->type == MTD_DATAFLASH) {
530 pr_err("Cannot operate on DataFlash unless jffs2 DataFlash support is compiled in\n");
531 return -EINVAL;
532 }
533#endif
534
535 c->flash_size = c->mtd->size;
536 c->sector_size = c->mtd->erasesize;
537 blocks = c->flash_size / c->sector_size;
538
539
540
541
542 if ((c->sector_size * blocks) != c->flash_size) {
543 c->flash_size = c->sector_size * blocks;
544 pr_info("Flash size not aligned to erasesize, reducing to %dKiB\n",
545 c->flash_size / 1024);
546 }
547
548 if (c->flash_size < 5*c->sector_size) {
549 pr_err("Too few erase blocks (%d)\n",
550 c->flash_size / c->sector_size);
551 return -EINVAL;
552 }
553
554 c->cleanmarker_size = sizeof(struct jffs2_unknown_node);
555
556
557 ret = jffs2_flash_setup(c);
558 if (ret)
559 return ret;
560
561 c->inocache_hashsize = calculate_inocache_hashsize(c->flash_size);
562 c->inocache_list = kcalloc(c->inocache_hashsize, sizeof(struct jffs2_inode_cache *), GFP_KERNEL);
563 if (!c->inocache_list) {
564 ret = -ENOMEM;
565 goto out_wbuf;
566 }
567
568 jffs2_init_xattr_subsystem(c);
569
570 if ((ret = jffs2_do_mount_fs(c)))
571 goto out_inohash;
572
573 jffs2_dbg(1, "%s(): Getting root inode\n", __func__);
574 root_i = jffs2_iget(sb, 1);
575 if (IS_ERR(root_i)) {
576 jffs2_dbg(1, "get root inode failed\n");
577 ret = PTR_ERR(root_i);
578 goto out_root;
579 }
580
581 ret = -ENOMEM;
582
583 jffs2_dbg(1, "%s(): d_make_root()\n", __func__);
584 sb->s_root = d_make_root(root_i);
585 if (!sb->s_root)
586 goto out_root;
587
588 sb->s_maxbytes = 0xFFFFFFFF;
589 sb->s_blocksize = PAGE_SIZE;
590 sb->s_blocksize_bits = PAGE_SHIFT;
591 sb->s_magic = JFFS2_SUPER_MAGIC;
592 if (!(sb->s_flags & MS_RDONLY))
593 jffs2_start_garbage_collect_thread(c);
594 return 0;
595
596out_root:
597 jffs2_free_ino_caches(c);
598 jffs2_free_raw_node_refs(c);
599 kvfree(c->blocks);
600 out_inohash:
601 jffs2_clear_xattr_subsystem(c);
602 kfree(c->inocache_list);
603 out_wbuf:
604 jffs2_flash_cleanup(c);
605
606 return ret;
607}
608
609void jffs2_gc_release_inode(struct jffs2_sb_info *c,
610 struct jffs2_inode_info *f)
611{
612 iput(OFNI_EDONI_2SFFJ(f));
613}
614
615struct jffs2_inode_info *jffs2_gc_fetch_inode(struct jffs2_sb_info *c,
616 int inum, int unlinked)
617{
618 struct inode *inode;
619 struct jffs2_inode_cache *ic;
620
621 if (unlinked) {
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636 inode = ilookup(OFNI_BS_2SFFJ(c), inum);
637 if (!inode) {
638 jffs2_dbg(1, "ilookup() failed for ino #%u; inode is probably deleted.\n",
639 inum);
640
641 spin_lock(&c->inocache_lock);
642 ic = jffs2_get_ino_cache(c, inum);
643 if (!ic) {
644 jffs2_dbg(1, "Inode cache for ino #%u is gone\n",
645 inum);
646 spin_unlock(&c->inocache_lock);
647 return NULL;
648 }
649 if (ic->state != INO_STATE_CHECKEDABSENT) {
650
651 jffs2_dbg(1, "Waiting for ino #%u in state %d\n",
652 ic->ino, ic->state);
653 sleep_on_spinunlock(&c->inocache_wq, &c->inocache_lock);
654 } else {
655 spin_unlock(&c->inocache_lock);
656 }
657
658 return NULL;
659 }
660 } else {
661
662
663
664
665 inode = jffs2_iget(OFNI_BS_2SFFJ(c), inum);
666 if (IS_ERR(inode))
667 return ERR_CAST(inode);
668 }
669 if (is_bad_inode(inode)) {
670 pr_notice("Eep. read_inode() failed for ino #%u. unlinked %d\n",
671 inum, unlinked);
672
673 iput(inode);
674 return ERR_PTR(-EIO);
675 }
676
677 return JFFS2_INODE_INFO(inode);
678}
679
680unsigned char *jffs2_gc_fetch_page(struct jffs2_sb_info *c,
681 struct jffs2_inode_info *f,
682 unsigned long offset,
683 unsigned long *priv)
684{
685 struct inode *inode = OFNI_EDONI_2SFFJ(f);
686 struct page *pg;
687
688 pg = read_cache_page(inode->i_mapping, offset >> PAGE_SHIFT,
689 (void *)jffs2_do_readpage_unlock, inode);
690 if (IS_ERR(pg))
691 return (void *)pg;
692
693 *priv = (unsigned long)pg;
694 return kmap(pg);
695}
696
697void jffs2_gc_release_page(struct jffs2_sb_info *c,
698 unsigned char *ptr,
699 unsigned long *priv)
700{
701 struct page *pg = (void *)*priv;
702
703 kunmap(pg);
704 put_page(pg);
705}
706
707static int jffs2_flash_setup(struct jffs2_sb_info *c) {
708 int ret = 0;
709
710 if (jffs2_cleanmarker_oob(c)) {
711
712 ret = jffs2_nand_flash_setup(c);
713 if (ret)
714 return ret;
715 }
716
717
718 if (jffs2_dataflash(c)) {
719 ret = jffs2_dataflash_setup(c);
720 if (ret)
721 return ret;
722 }
723
724
725 if (jffs2_nor_wbuf_flash(c)) {
726 ret = jffs2_nor_wbuf_flash_setup(c);
727 if (ret)
728 return ret;
729 }
730
731
732 if (jffs2_ubivol(c)) {
733 ret = jffs2_ubivol_setup(c);
734 if (ret)
735 return ret;
736 }
737
738 return ret;
739}
740
741void jffs2_flash_cleanup(struct jffs2_sb_info *c) {
742
743 if (jffs2_cleanmarker_oob(c)) {
744 jffs2_nand_flash_cleanup(c);
745 }
746
747
748 if (jffs2_dataflash(c)) {
749 jffs2_dataflash_cleanup(c);
750 }
751
752
753 if (jffs2_nor_wbuf_flash(c)) {
754 jffs2_nor_wbuf_flash_cleanup(c);
755 }
756
757
758 if (jffs2_ubivol(c)) {
759 jffs2_ubivol_cleanup(c);
760 }
761}
762