~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/fs/hfsplus/extents.c

Version: ~ [ linux-5.4-rc3 ] ~ [ linux-5.3.6 ] ~ [ linux-5.2.21 ] ~ [ linux-5.1.21 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.79 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.149 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.196 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.196 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.75 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  1 /*
  2  *  linux/fs/hfsplus/extents.c
  3  *
  4  * Copyright (C) 2001
  5  * Brad Boyer (flar@allandria.com)
  6  * (C) 2003 Ardis Technologies <roman@ardistech.com>
  7  *
  8  * Handling of Extents both in catalog and extents overflow trees
  9  */
 10 
 11 #include <linux/errno.h>
 12 #include <linux/fs.h>
 13 #include <linux/pagemap.h>
 14 
 15 #include "hfsplus_fs.h"
 16 #include "hfsplus_raw.h"
 17 
 18 /* Compare two extents keys, returns 0 on same, pos/neg for difference */
 19 int hfsplus_ext_cmp_key(const hfsplus_btree_key *k1,
 20                         const hfsplus_btree_key *k2)
 21 {
 22         __be32 k1id, k2id;
 23         __be32 k1s, k2s;
 24 
 25         k1id = k1->ext.cnid;
 26         k2id = k2->ext.cnid;
 27         if (k1id != k2id)
 28                 return be32_to_cpu(k1id) < be32_to_cpu(k2id) ? -1 : 1;
 29 
 30         if (k1->ext.fork_type != k2->ext.fork_type)
 31                 return k1->ext.fork_type < k2->ext.fork_type ? -1 : 1;
 32 
 33         k1s = k1->ext.start_block;
 34         k2s = k2->ext.start_block;
 35         if (k1s == k2s)
 36                 return 0;
 37         return be32_to_cpu(k1s) < be32_to_cpu(k2s) ? -1 : 1;
 38 }
 39 
 40 static void hfsplus_ext_build_key(hfsplus_btree_key *key, u32 cnid,
 41                                   u32 block, u8 type)
 42 {
 43         key->key_len = cpu_to_be16(HFSPLUS_EXT_KEYLEN - 2);
 44         key->ext.cnid = cpu_to_be32(cnid);
 45         key->ext.start_block = cpu_to_be32(block);
 46         key->ext.fork_type = type;
 47         key->ext.pad = 0;
 48 }
 49 
 50 static u32 hfsplus_ext_find_block(struct hfsplus_extent *ext, u32 off)
 51 {
 52         int i;
 53         u32 count;
 54 
 55         for (i = 0; i < 8; ext++, i++) {
 56                 count = be32_to_cpu(ext->block_count);
 57                 if (off < count)
 58                         return be32_to_cpu(ext->start_block) + off;
 59                 off -= count;
 60         }
 61         /* panic? */
 62         return 0;
 63 }
 64 
 65 static int hfsplus_ext_block_count(struct hfsplus_extent *ext)
 66 {
 67         int i;
 68         u32 count = 0;
 69 
 70         for (i = 0; i < 8; ext++, i++)
 71                 count += be32_to_cpu(ext->block_count);
 72         return count;
 73 }
 74 
 75 static u32 hfsplus_ext_lastblock(struct hfsplus_extent *ext)
 76 {
 77         int i;
 78 
 79         ext += 7;
 80         for (i = 0; i < 7; ext--, i++)
 81                 if (ext->block_count)
 82                         break;
 83         return be32_to_cpu(ext->start_block) + be32_to_cpu(ext->block_count);
 84 }
 85 
 86 static int __hfsplus_ext_write_extent(struct inode *inode,
 87                 struct hfs_find_data *fd)
 88 {
 89         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
 90         int res;
 91 
 92         WARN_ON(!mutex_is_locked(&hip->extents_lock));
 93 
 94         hfsplus_ext_build_key(fd->search_key, inode->i_ino, hip->cached_start,
 95                               HFSPLUS_IS_RSRC(inode) ?
 96                                 HFSPLUS_TYPE_RSRC : HFSPLUS_TYPE_DATA);
 97 
 98         res = hfs_brec_find(fd, hfs_find_rec_by_key);
 99         if (hip->extent_state & HFSPLUS_EXT_NEW) {
100                 if (res != -ENOENT)
101                         return res;
102                 hfs_brec_insert(fd, hip->cached_extents,
103                                 sizeof(hfsplus_extent_rec));
104                 hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
105         } else {
106                 if (res)
107                         return res;
108                 hfs_bnode_write(fd->bnode, hip->cached_extents,
109                                 fd->entryoffset, fd->entrylength);
110                 hip->extent_state &= ~HFSPLUS_EXT_DIRTY;
111         }
112 
113         /*
114          * We can't just use hfsplus_mark_inode_dirty here, because we
115          * also get called from hfsplus_write_inode, which should not
116          * redirty the inode.  Instead the callers have to be careful
117          * to explicily mark the inode dirty, too.
118          */
119         set_bit(HFSPLUS_I_EXT_DIRTY, &hip->flags);
120 
121         return 0;
122 }
123 
124 static int hfsplus_ext_write_extent_locked(struct inode *inode)
125 {
126         int res = 0;
127 
128         if (HFSPLUS_I(inode)->extent_state & HFSPLUS_EXT_DIRTY) {
129                 struct hfs_find_data fd;
130 
131                 res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
132                 if (res)
133                         return res;
134                 res = __hfsplus_ext_write_extent(inode, &fd);
135                 hfs_find_exit(&fd);
136         }
137         return res;
138 }
139 
140 int hfsplus_ext_write_extent(struct inode *inode)
141 {
142         int res;
143 
144         mutex_lock(&HFSPLUS_I(inode)->extents_lock);
145         res = hfsplus_ext_write_extent_locked(inode);
146         mutex_unlock(&HFSPLUS_I(inode)->extents_lock);
147 
148         return res;
149 }
150 
151 static inline int __hfsplus_ext_read_extent(struct hfs_find_data *fd,
152                                             struct hfsplus_extent *extent,
153                                             u32 cnid, u32 block, u8 type)
154 {
155         int res;
156 
157         hfsplus_ext_build_key(fd->search_key, cnid, block, type);
158         fd->key->ext.cnid = 0;
159         res = hfs_brec_find(fd, hfs_find_rec_by_key);
160         if (res && res != -ENOENT)
161                 return res;
162         if (fd->key->ext.cnid != fd->search_key->ext.cnid ||
163             fd->key->ext.fork_type != fd->search_key->ext.fork_type)
164                 return -ENOENT;
165         if (fd->entrylength != sizeof(hfsplus_extent_rec))
166                 return -EIO;
167         hfs_bnode_read(fd->bnode, extent, fd->entryoffset,
168                 sizeof(hfsplus_extent_rec));
169         return 0;
170 }
171 
172 static inline int __hfsplus_ext_cache_extent(struct hfs_find_data *fd,
173                 struct inode *inode, u32 block)
174 {
175         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
176         int res;
177 
178         WARN_ON(!mutex_is_locked(&hip->extents_lock));
179 
180         if (hip->extent_state & HFSPLUS_EXT_DIRTY) {
181                 res = __hfsplus_ext_write_extent(inode, fd);
182                 if (res)
183                         return res;
184         }
185 
186         res = __hfsplus_ext_read_extent(fd, hip->cached_extents, inode->i_ino,
187                                         block, HFSPLUS_IS_RSRC(inode) ?
188                                                 HFSPLUS_TYPE_RSRC :
189                                                 HFSPLUS_TYPE_DATA);
190         if (!res) {
191                 hip->cached_start = be32_to_cpu(fd->key->ext.start_block);
192                 hip->cached_blocks =
193                         hfsplus_ext_block_count(hip->cached_extents);
194         } else {
195                 hip->cached_start = hip->cached_blocks = 0;
196                 hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
197         }
198         return res;
199 }
200 
201 static int hfsplus_ext_read_extent(struct inode *inode, u32 block)
202 {
203         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
204         struct hfs_find_data fd;
205         int res;
206 
207         if (block >= hip->cached_start &&
208             block < hip->cached_start + hip->cached_blocks)
209                 return 0;
210 
211         res = hfs_find_init(HFSPLUS_SB(inode->i_sb)->ext_tree, &fd);
212         if (!res) {
213                 res = __hfsplus_ext_cache_extent(&fd, inode, block);
214                 hfs_find_exit(&fd);
215         }
216         return res;
217 }
218 
219 /* Get a block at iblock for inode, possibly allocating if create */
220 int hfsplus_get_block(struct inode *inode, sector_t iblock,
221                       struct buffer_head *bh_result, int create)
222 {
223         struct super_block *sb = inode->i_sb;
224         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
225         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
226         int res = -EIO;
227         u32 ablock, dblock, mask;
228         sector_t sector;
229         int was_dirty = 0;
230 
231         /* Convert inode block to disk allocation block */
232         ablock = iblock >> sbi->fs_shift;
233 
234         if (iblock >= hip->fs_blocks) {
235                 if (iblock > hip->fs_blocks || !create)
236                         return -EIO;
237                 if (ablock >= hip->alloc_blocks) {
238                         res = hfsplus_file_extend(inode, false);
239                         if (res)
240                                 return res;
241                 }
242         } else
243                 create = 0;
244 
245         if (ablock < hip->first_blocks) {
246                 dblock = hfsplus_ext_find_block(hip->first_extents, ablock);
247                 goto done;
248         }
249 
250         if (inode->i_ino == HFSPLUS_EXT_CNID)
251                 return -EIO;
252 
253         mutex_lock(&hip->extents_lock);
254 
255         /*
256          * hfsplus_ext_read_extent will write out a cached extent into
257          * the extents btree.  In that case we may have to mark the inode
258          * dirty even for a pure read of an extent here.
259          */
260         was_dirty = (hip->extent_state & HFSPLUS_EXT_DIRTY);
261         res = hfsplus_ext_read_extent(inode, ablock);
262         if (res) {
263                 mutex_unlock(&hip->extents_lock);
264                 return -EIO;
265         }
266         dblock = hfsplus_ext_find_block(hip->cached_extents,
267                                         ablock - hip->cached_start);
268         mutex_unlock(&hip->extents_lock);
269 
270 done:
271         hfs_dbg(EXTENT, "get_block(%lu): %llu - %u\n",
272                 inode->i_ino, (long long)iblock, dblock);
273 
274         mask = (1 << sbi->fs_shift) - 1;
275         sector = ((sector_t)dblock << sbi->fs_shift) +
276                   sbi->blockoffset + (iblock & mask);
277         map_bh(bh_result, sb, sector);
278 
279         if (create) {
280                 set_buffer_new(bh_result);
281                 hip->phys_size += sb->s_blocksize;
282                 hip->fs_blocks++;
283                 inode_add_bytes(inode, sb->s_blocksize);
284         }
285         if (create || was_dirty)
286                 mark_inode_dirty(inode);
287         return 0;
288 }
289 
290 static void hfsplus_dump_extent(struct hfsplus_extent *extent)
291 {
292         int i;
293 
294         hfs_dbg(EXTENT, "   ");
295         for (i = 0; i < 8; i++)
296                 hfs_dbg_cont(EXTENT, " %u:%u",
297                              be32_to_cpu(extent[i].start_block),
298                              be32_to_cpu(extent[i].block_count));
299         hfs_dbg_cont(EXTENT, "\n");
300 }
301 
302 static int hfsplus_add_extent(struct hfsplus_extent *extent, u32 offset,
303                               u32 alloc_block, u32 block_count)
304 {
305         u32 count, start;
306         int i;
307 
308         hfsplus_dump_extent(extent);
309         for (i = 0; i < 8; extent++, i++) {
310                 count = be32_to_cpu(extent->block_count);
311                 if (offset == count) {
312                         start = be32_to_cpu(extent->start_block);
313                         if (alloc_block != start + count) {
314                                 if (++i >= 8)
315                                         return -ENOSPC;
316                                 extent++;
317                                 extent->start_block = cpu_to_be32(alloc_block);
318                         } else
319                                 block_count += count;
320                         extent->block_count = cpu_to_be32(block_count);
321                         return 0;
322                 } else if (offset < count)
323                         break;
324                 offset -= count;
325         }
326         /* panic? */
327         return -EIO;
328 }
329 
330 static int hfsplus_free_extents(struct super_block *sb,
331                                 struct hfsplus_extent *extent,
332                                 u32 offset, u32 block_nr)
333 {
334         u32 count, start;
335         int i;
336         int err = 0;
337 
338         hfsplus_dump_extent(extent);
339         for (i = 0; i < 8; extent++, i++) {
340                 count = be32_to_cpu(extent->block_count);
341                 if (offset == count)
342                         goto found;
343                 else if (offset < count)
344                         break;
345                 offset -= count;
346         }
347         /* panic? */
348         return -EIO;
349 found:
350         for (;;) {
351                 start = be32_to_cpu(extent->start_block);
352                 if (count <= block_nr) {
353                         err = hfsplus_block_free(sb, start, count);
354                         if (err) {
355                                 pr_err("can't free extent\n");
356                                 hfs_dbg(EXTENT, " start: %u count: %u\n",
357                                         start, count);
358                         }
359                         extent->block_count = 0;
360                         extent->start_block = 0;
361                         block_nr -= count;
362                 } else {
363                         count -= block_nr;
364                         err = hfsplus_block_free(sb, start + count, block_nr);
365                         if (err) {
366                                 pr_err("can't free extent\n");
367                                 hfs_dbg(EXTENT, " start: %u count: %u\n",
368                                         start, count);
369                         }
370                         extent->block_count = cpu_to_be32(count);
371                         block_nr = 0;
372                 }
373                 if (!block_nr || !i) {
374                         /*
375                          * Try to free all extents and
376                          * return only last error
377                          */
378                         return err;
379                 }
380                 i--;
381                 extent--;
382                 count = be32_to_cpu(extent->block_count);
383         }
384 }
385 
386 int hfsplus_free_fork(struct super_block *sb, u32 cnid,
387                 struct hfsplus_fork_raw *fork, int type)
388 {
389         struct hfs_find_data fd;
390         hfsplus_extent_rec ext_entry;
391         u32 total_blocks, blocks, start;
392         int res, i;
393 
394         total_blocks = be32_to_cpu(fork->total_blocks);
395         if (!total_blocks)
396                 return 0;
397 
398         blocks = 0;
399         for (i = 0; i < 8; i++)
400                 blocks += be32_to_cpu(fork->extents[i].block_count);
401 
402         res = hfsplus_free_extents(sb, fork->extents, blocks, blocks);
403         if (res)
404                 return res;
405         if (total_blocks == blocks)
406                 return 0;
407 
408         res = hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
409         if (res)
410                 return res;
411         do {
412                 res = __hfsplus_ext_read_extent(&fd, ext_entry, cnid,
413                                                 total_blocks, type);
414                 if (res)
415                         break;
416                 start = be32_to_cpu(fd.key->ext.start_block);
417                 hfsplus_free_extents(sb, ext_entry,
418                                      total_blocks - start,
419                                      total_blocks);
420                 hfs_brec_remove(&fd);
421                 total_blocks = start;
422         } while (total_blocks > blocks);
423         hfs_find_exit(&fd);
424 
425         return res;
426 }
427 
428 int hfsplus_file_extend(struct inode *inode, bool zeroout)
429 {
430         struct super_block *sb = inode->i_sb;
431         struct hfsplus_sb_info *sbi = HFSPLUS_SB(sb);
432         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
433         u32 start, len, goal;
434         int res;
435 
436         if (sbi->alloc_file->i_size * 8 <
437             sbi->total_blocks - sbi->free_blocks + 8) {
438                 /* extend alloc file */
439                 pr_err("extend alloc file! (%llu,%u,%u)\n",
440                        sbi->alloc_file->i_size * 8,
441                        sbi->total_blocks, sbi->free_blocks);
442                 return -ENOSPC;
443         }
444 
445         mutex_lock(&hip->extents_lock);
446         if (hip->alloc_blocks == hip->first_blocks)
447                 goal = hfsplus_ext_lastblock(hip->first_extents);
448         else {
449                 res = hfsplus_ext_read_extent(inode, hip->alloc_blocks);
450                 if (res)
451                         goto out;
452                 goal = hfsplus_ext_lastblock(hip->cached_extents);
453         }
454 
455         len = hip->clump_blocks;
456         start = hfsplus_block_allocate(sb, sbi->total_blocks, goal, &len);
457         if (start >= sbi->total_blocks) {
458                 start = hfsplus_block_allocate(sb, goal, 0, &len);
459                 if (start >= goal) {
460                         res = -ENOSPC;
461                         goto out;
462                 }
463         }
464 
465         if (zeroout) {
466                 res = sb_issue_zeroout(sb, start, len, GFP_NOFS);
467                 if (res)
468                         goto out;
469         }
470 
471         hfs_dbg(EXTENT, "extend %lu: %u,%u\n", inode->i_ino, start, len);
472 
473         if (hip->alloc_blocks <= hip->first_blocks) {
474                 if (!hip->first_blocks) {
475                         hfs_dbg(EXTENT, "first extents\n");
476                         /* no extents yet */
477                         hip->first_extents[0].start_block = cpu_to_be32(start);
478                         hip->first_extents[0].block_count = cpu_to_be32(len);
479                         res = 0;
480                 } else {
481                         /* try to append to extents in inode */
482                         res = hfsplus_add_extent(hip->first_extents,
483                                                  hip->alloc_blocks,
484                                                  start, len);
485                         if (res == -ENOSPC)
486                                 goto insert_extent;
487                 }
488                 if (!res) {
489                         hfsplus_dump_extent(hip->first_extents);
490                         hip->first_blocks += len;
491                 }
492         } else {
493                 res = hfsplus_add_extent(hip->cached_extents,
494                                          hip->alloc_blocks - hip->cached_start,
495                                          start, len);
496                 if (!res) {
497                         hfsplus_dump_extent(hip->cached_extents);
498                         hip->extent_state |= HFSPLUS_EXT_DIRTY;
499                         hip->cached_blocks += len;
500                 } else if (res == -ENOSPC)
501                         goto insert_extent;
502         }
503 out:
504         if (!res) {
505                 hip->alloc_blocks += len;
506                 mutex_unlock(&hip->extents_lock);
507                 hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ALLOC_DIRTY);
508                 return 0;
509         }
510         mutex_unlock(&hip->extents_lock);
511         return res;
512 
513 insert_extent:
514         hfs_dbg(EXTENT, "insert new extent\n");
515         res = hfsplus_ext_write_extent_locked(inode);
516         if (res)
517                 goto out;
518 
519         memset(hip->cached_extents, 0, sizeof(hfsplus_extent_rec));
520         hip->cached_extents[0].start_block = cpu_to_be32(start);
521         hip->cached_extents[0].block_count = cpu_to_be32(len);
522         hfsplus_dump_extent(hip->cached_extents);
523         hip->extent_state |= HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW;
524         hip->cached_start = hip->alloc_blocks;
525         hip->cached_blocks = len;
526 
527         res = 0;
528         goto out;
529 }
530 
531 void hfsplus_file_truncate(struct inode *inode)
532 {
533         struct super_block *sb = inode->i_sb;
534         struct hfsplus_inode_info *hip = HFSPLUS_I(inode);
535         struct hfs_find_data fd;
536         u32 alloc_cnt, blk_cnt, start;
537         int res;
538 
539         hfs_dbg(INODE, "truncate: %lu, %llu -> %llu\n",
540                 inode->i_ino, (long long)hip->phys_size, inode->i_size);
541 
542         if (inode->i_size > hip->phys_size) {
543                 struct address_space *mapping = inode->i_mapping;
544                 struct page *page;
545                 void *fsdata;
546                 loff_t size = inode->i_size;
547 
548                 res = pagecache_write_begin(NULL, mapping, size, 0, 0,
549                                             &page, &fsdata);
550                 if (res)
551                         return;
552                 res = pagecache_write_end(NULL, mapping, size,
553                         0, 0, page, fsdata);
554                 if (res < 0)
555                         return;
556                 mark_inode_dirty(inode);
557                 return;
558         } else if (inode->i_size == hip->phys_size)
559                 return;
560 
561         blk_cnt = (inode->i_size + HFSPLUS_SB(sb)->alloc_blksz - 1) >>
562                         HFSPLUS_SB(sb)->alloc_blksz_shift;
563 
564         mutex_lock(&hip->extents_lock);
565 
566         alloc_cnt = hip->alloc_blocks;
567         if (blk_cnt == alloc_cnt)
568                 goto out_unlock;
569 
570         res = hfs_find_init(HFSPLUS_SB(sb)->ext_tree, &fd);
571         if (res) {
572                 mutex_unlock(&hip->extents_lock);
573                 /* XXX: We lack error handling of hfsplus_file_truncate() */
574                 return;
575         }
576         while (1) {
577                 if (alloc_cnt == hip->first_blocks) {
578                         hfsplus_free_extents(sb, hip->first_extents,
579                                              alloc_cnt, alloc_cnt - blk_cnt);
580                         hfsplus_dump_extent(hip->first_extents);
581                         hip->first_blocks = blk_cnt;
582                         break;
583                 }
584                 res = __hfsplus_ext_cache_extent(&fd, inode, alloc_cnt);
585                 if (res)
586                         break;
587                 start = hip->cached_start;
588                 hfsplus_free_extents(sb, hip->cached_extents,
589                                      alloc_cnt - start, alloc_cnt - blk_cnt);
590                 hfsplus_dump_extent(hip->cached_extents);
591                 if (blk_cnt > start) {
592                         hip->extent_state |= HFSPLUS_EXT_DIRTY;
593                         break;
594                 }
595                 alloc_cnt = start;
596                 hip->cached_start = hip->cached_blocks = 0;
597                 hip->extent_state &= ~(HFSPLUS_EXT_DIRTY | HFSPLUS_EXT_NEW);
598                 hfs_brec_remove(&fd);
599         }
600         hfs_find_exit(&fd);
601 
602         hip->alloc_blocks = blk_cnt;
603 out_unlock:
604         mutex_unlock(&hip->extents_lock);
605         hip->phys_size = inode->i_size;
606         hip->fs_blocks = (inode->i_size + sb->s_blocksize - 1) >>
607                 sb->s_blocksize_bits;
608         inode_set_bytes(inode, hip->fs_blocks << sb->s_blocksize_bits);
609         hfsplus_mark_inode_dirty(inode, HFSPLUS_I_ALLOC_DIRTY);
610 }
611 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp