Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
aff063e2 JK |
2 | * fs/f2fs/super.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/statfs.h> | |
aff063e2 JK |
15 | #include <linux/buffer_head.h> |
16 | #include <linux/backing-dev.h> | |
17 | #include <linux/kthread.h> | |
18 | #include <linux/parser.h> | |
19 | #include <linux/mount.h> | |
20 | #include <linux/seq_file.h> | |
5e176d54 | 21 | #include <linux/proc_fs.h> |
aff063e2 JK |
22 | #include <linux/random.h> |
23 | #include <linux/exportfs.h> | |
d3ee456d | 24 | #include <linux/blkdev.h> |
aff063e2 | 25 | #include <linux/f2fs_fs.h> |
b59d0bae | 26 | #include <linux/sysfs.h> |
aff063e2 JK |
27 | |
28 | #include "f2fs.h" | |
29 | #include "node.h" | |
5ec4e49f | 30 | #include "segment.h" |
aff063e2 | 31 | #include "xattr.h" |
b59d0bae | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
aff063e2 | 34 | |
a2a4a7e4 NJ |
35 | #define CREATE_TRACE_POINTS |
36 | #include <trace/events/f2fs.h> | |
37 | ||
5e176d54 | 38 | static struct proc_dir_entry *f2fs_proc_root; |
aff063e2 | 39 | static struct kmem_cache *f2fs_inode_cachep; |
b59d0bae | 40 | static struct kset *f2fs_kset; |
aff063e2 JK |
41 | |
42 | enum { | |
696c018c | 43 | Opt_gc_background, |
aff063e2 | 44 | Opt_disable_roll_forward, |
2d834bf9 | 45 | Opt_norecovery, |
aff063e2 JK |
46 | Opt_discard, |
47 | Opt_noheap, | |
4058c511 | 48 | Opt_user_xattr, |
aff063e2 | 49 | Opt_nouser_xattr, |
4058c511 | 50 | Opt_acl, |
aff063e2 JK |
51 | Opt_noacl, |
52 | Opt_active_logs, | |
53 | Opt_disable_ext_identify, | |
444c580f | 54 | Opt_inline_xattr, |
8274de77 | 55 | Opt_inline_data, |
5efd3c6f | 56 | Opt_inline_dentry, |
6b4afdd7 | 57 | Opt_flush_merge, |
0f7b2abd | 58 | Opt_nobarrier, |
d5053a34 | 59 | Opt_fastboot, |
89672159 | 60 | Opt_extent_cache, |
75342797 | 61 | Opt_noinline_data, |
aff063e2 JK |
62 | Opt_err, |
63 | }; | |
64 | ||
65 | static match_table_t f2fs_tokens = { | |
696c018c | 66 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 67 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 68 | {Opt_norecovery, "norecovery"}, |
aff063e2 JK |
69 | {Opt_discard, "discard"}, |
70 | {Opt_noheap, "no_heap"}, | |
4058c511 | 71 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 72 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 73 | {Opt_acl, "acl"}, |
aff063e2 JK |
74 | {Opt_noacl, "noacl"}, |
75 | {Opt_active_logs, "active_logs=%u"}, | |
76 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 77 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 78 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 79 | {Opt_inline_dentry, "inline_dentry"}, |
6b4afdd7 | 80 | {Opt_flush_merge, "flush_merge"}, |
0f7b2abd | 81 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 82 | {Opt_fastboot, "fastboot"}, |
89672159 | 83 | {Opt_extent_cache, "extent_cache"}, |
75342797 | 84 | {Opt_noinline_data, "noinline_data"}, |
aff063e2 JK |
85 | {Opt_err, NULL}, |
86 | }; | |
87 | ||
b59d0bae | 88 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
89 | enum { |
90 | GC_THREAD, /* struct f2fs_gc_thread */ | |
91 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 92 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 93 | F2FS_SBI, /* struct f2fs_sb_info */ |
ea91e9b0 JK |
94 | }; |
95 | ||
b59d0bae NJ |
96 | struct f2fs_attr { |
97 | struct attribute attr; | |
98 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
99 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
100 | const char *, size_t); | |
ea91e9b0 | 101 | int struct_type; |
b59d0bae NJ |
102 | int offset; |
103 | }; | |
104 | ||
ea91e9b0 JK |
105 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
106 | { | |
107 | if (struct_type == GC_THREAD) | |
108 | return (unsigned char *)sbi->gc_thread; | |
109 | else if (struct_type == SM_INFO) | |
110 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
111 | else if (struct_type == NM_INFO) |
112 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
113 | else if (struct_type == F2FS_SBI) |
114 | return (unsigned char *)sbi; | |
ea91e9b0 JK |
115 | return NULL; |
116 | } | |
117 | ||
b59d0bae NJ |
118 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
119 | struct f2fs_sb_info *sbi, char *buf) | |
120 | { | |
ea91e9b0 | 121 | unsigned char *ptr = NULL; |
b59d0bae NJ |
122 | unsigned int *ui; |
123 | ||
ea91e9b0 JK |
124 | ptr = __struct_ptr(sbi, a->struct_type); |
125 | if (!ptr) | |
b59d0bae NJ |
126 | return -EINVAL; |
127 | ||
ea91e9b0 | 128 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
129 | |
130 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
131 | } | |
132 | ||
133 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
134 | struct f2fs_sb_info *sbi, | |
135 | const char *buf, size_t count) | |
136 | { | |
ea91e9b0 | 137 | unsigned char *ptr; |
b59d0bae NJ |
138 | unsigned long t; |
139 | unsigned int *ui; | |
140 | ssize_t ret; | |
141 | ||
ea91e9b0 JK |
142 | ptr = __struct_ptr(sbi, a->struct_type); |
143 | if (!ptr) | |
b59d0bae NJ |
144 | return -EINVAL; |
145 | ||
ea91e9b0 | 146 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
147 | |
148 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
149 | if (ret < 0) | |
150 | return ret; | |
151 | *ui = t; | |
152 | return count; | |
153 | } | |
154 | ||
155 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
156 | struct attribute *attr, char *buf) | |
157 | { | |
158 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
159 | s_kobj); | |
160 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
161 | ||
162 | return a->show ? a->show(a, sbi, buf) : 0; | |
163 | } | |
164 | ||
165 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
166 | const char *buf, size_t len) | |
167 | { | |
168 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
169 | s_kobj); | |
170 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
171 | ||
172 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
173 | } | |
174 | ||
175 | static void f2fs_sb_release(struct kobject *kobj) | |
176 | { | |
177 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
178 | s_kobj); | |
179 | complete(&sbi->s_kobj_unregister); | |
180 | } | |
181 | ||
ea91e9b0 | 182 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
183 | static struct f2fs_attr f2fs_attr_##_name = { \ |
184 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
185 | .show = _show, \ | |
186 | .store = _store, \ | |
ea91e9b0 JK |
187 | .struct_type = _struct_type, \ |
188 | .offset = _offset \ | |
b59d0bae NJ |
189 | } |
190 | ||
ea91e9b0 JK |
191 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
192 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
193 | f2fs_sbi_show, f2fs_sbi_store, \ | |
194 | offsetof(struct struct_name, elname)) | |
b59d0bae | 195 | |
ea91e9b0 JK |
196 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
197 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
198 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
199 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
200 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 201 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 202 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
203 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
204 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 205 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 206 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
b1c57c1c | 207 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 208 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
b59d0bae NJ |
209 | |
210 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
211 | static struct attribute *f2fs_attrs[] = { | |
212 | ATTR_LIST(gc_min_sleep_time), | |
213 | ATTR_LIST(gc_max_sleep_time), | |
214 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 215 | ATTR_LIST(gc_idle), |
ea91e9b0 | 216 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 217 | ATTR_LIST(max_small_discards), |
bba681cb | 218 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
219 | ATTR_LIST(ipu_policy), |
220 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 221 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 222 | ATTR_LIST(max_victim_search), |
ab9fa662 | 223 | ATTR_LIST(dir_level), |
cdfc41c1 | 224 | ATTR_LIST(ram_thresh), |
b59d0bae NJ |
225 | NULL, |
226 | }; | |
227 | ||
228 | static const struct sysfs_ops f2fs_attr_ops = { | |
229 | .show = f2fs_attr_show, | |
230 | .store = f2fs_attr_store, | |
231 | }; | |
232 | ||
233 | static struct kobj_type f2fs_ktype = { | |
234 | .default_attrs = f2fs_attrs, | |
235 | .sysfs_ops = &f2fs_attr_ops, | |
236 | .release = f2fs_sb_release, | |
237 | }; | |
238 | ||
a07ef784 NJ |
239 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
240 | { | |
241 | struct va_format vaf; | |
242 | va_list args; | |
243 | ||
244 | va_start(args, fmt); | |
245 | vaf.fmt = fmt; | |
246 | vaf.va = &args; | |
247 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
248 | va_end(args); | |
249 | } | |
250 | ||
aff063e2 JK |
251 | static void init_once(void *foo) |
252 | { | |
253 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
254 | ||
aff063e2 JK |
255 | inode_init_once(&fi->vfs_inode); |
256 | } | |
257 | ||
696c018c NJ |
258 | static int parse_options(struct super_block *sb, char *options) |
259 | { | |
260 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 261 | struct request_queue *q; |
696c018c NJ |
262 | substring_t args[MAX_OPT_ARGS]; |
263 | char *p, *name; | |
264 | int arg = 0; | |
265 | ||
266 | if (!options) | |
267 | return 0; | |
268 | ||
269 | while ((p = strsep(&options, ",")) != NULL) { | |
270 | int token; | |
271 | if (!*p) | |
272 | continue; | |
273 | /* | |
274 | * Initialize args struct so we know whether arg was | |
275 | * found; some options take optional arguments. | |
276 | */ | |
277 | args[0].to = args[0].from = NULL; | |
278 | token = match_token(p, f2fs_tokens, args); | |
279 | ||
280 | switch (token) { | |
281 | case Opt_gc_background: | |
282 | name = match_strdup(&args[0]); | |
283 | ||
284 | if (!name) | |
285 | return -ENOMEM; | |
04c09388 | 286 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) |
696c018c | 287 | set_opt(sbi, BG_GC); |
04c09388 | 288 | else if (strlen(name) == 3 && !strncmp(name, "off", 3)) |
696c018c NJ |
289 | clear_opt(sbi, BG_GC); |
290 | else { | |
291 | kfree(name); | |
292 | return -EINVAL; | |
293 | } | |
294 | kfree(name); | |
295 | break; | |
296 | case Opt_disable_roll_forward: | |
297 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
298 | break; | |
2d834bf9 JK |
299 | case Opt_norecovery: |
300 | /* this option mounts f2fs with ro */ | |
301 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
302 | if (!f2fs_readonly(sb)) | |
303 | return -EINVAL; | |
304 | break; | |
696c018c | 305 | case Opt_discard: |
09d54cdd CY |
306 | q = bdev_get_queue(sb->s_bdev); |
307 | if (blk_queue_discard(q)) { | |
308 | set_opt(sbi, DISCARD); | |
309 | } else { | |
310 | f2fs_msg(sb, KERN_WARNING, | |
311 | "mounting with \"discard\" option, but " | |
312 | "the device does not support discard"); | |
313 | } | |
696c018c NJ |
314 | break; |
315 | case Opt_noheap: | |
316 | set_opt(sbi, NOHEAP); | |
317 | break; | |
318 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
319 | case Opt_user_xattr: |
320 | set_opt(sbi, XATTR_USER); | |
321 | break; | |
696c018c NJ |
322 | case Opt_nouser_xattr: |
323 | clear_opt(sbi, XATTR_USER); | |
324 | break; | |
444c580f JK |
325 | case Opt_inline_xattr: |
326 | set_opt(sbi, INLINE_XATTR); | |
327 | break; | |
696c018c | 328 | #else |
4058c511 KA |
329 | case Opt_user_xattr: |
330 | f2fs_msg(sb, KERN_INFO, | |
331 | "user_xattr options not supported"); | |
332 | break; | |
696c018c NJ |
333 | case Opt_nouser_xattr: |
334 | f2fs_msg(sb, KERN_INFO, | |
335 | "nouser_xattr options not supported"); | |
336 | break; | |
444c580f JK |
337 | case Opt_inline_xattr: |
338 | f2fs_msg(sb, KERN_INFO, | |
339 | "inline_xattr options not supported"); | |
340 | break; | |
696c018c NJ |
341 | #endif |
342 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
343 | case Opt_acl: |
344 | set_opt(sbi, POSIX_ACL); | |
345 | break; | |
696c018c NJ |
346 | case Opt_noacl: |
347 | clear_opt(sbi, POSIX_ACL); | |
348 | break; | |
349 | #else | |
4058c511 KA |
350 | case Opt_acl: |
351 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
352 | break; | |
696c018c NJ |
353 | case Opt_noacl: |
354 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
355 | break; | |
356 | #endif | |
357 | case Opt_active_logs: | |
358 | if (args->from && match_int(args, &arg)) | |
359 | return -EINVAL; | |
360 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
361 | return -EINVAL; | |
362 | sbi->active_logs = arg; | |
363 | break; | |
364 | case Opt_disable_ext_identify: | |
365 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
366 | break; | |
8274de77 HL |
367 | case Opt_inline_data: |
368 | set_opt(sbi, INLINE_DATA); | |
369 | break; | |
5efd3c6f CY |
370 | case Opt_inline_dentry: |
371 | set_opt(sbi, INLINE_DENTRY); | |
372 | break; | |
6b4afdd7 JK |
373 | case Opt_flush_merge: |
374 | set_opt(sbi, FLUSH_MERGE); | |
375 | break; | |
0f7b2abd JK |
376 | case Opt_nobarrier: |
377 | set_opt(sbi, NOBARRIER); | |
378 | break; | |
d5053a34 JK |
379 | case Opt_fastboot: |
380 | set_opt(sbi, FASTBOOT); | |
381 | break; | |
89672159 CY |
382 | case Opt_extent_cache: |
383 | set_opt(sbi, EXTENT_CACHE); | |
384 | break; | |
75342797 WL |
385 | case Opt_noinline_data: |
386 | clear_opt(sbi, INLINE_DATA); | |
387 | break; | |
696c018c NJ |
388 | default: |
389 | f2fs_msg(sb, KERN_ERR, | |
390 | "Unrecognized mount option \"%s\" or missing value", | |
391 | p); | |
392 | return -EINVAL; | |
393 | } | |
394 | } | |
395 | return 0; | |
396 | } | |
397 | ||
aff063e2 JK |
398 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
399 | { | |
400 | struct f2fs_inode_info *fi; | |
401 | ||
a0acdfe0 | 402 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
403 | if (!fi) |
404 | return NULL; | |
405 | ||
406 | init_once((void *) fi); | |
407 | ||
434720fa | 408 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 409 | fi->vfs_inode.i_version = 1; |
a7ffdbe2 | 410 | atomic_set(&fi->dirty_pages, 0); |
aff063e2 JK |
411 | fi->i_current_depth = 1; |
412 | fi->i_advise = 0; | |
0c872e2d | 413 | rwlock_init(&fi->ext_lock); |
d928bfbf | 414 | init_rwsem(&fi->i_sem); |
34ba94ba | 415 | INIT_RADIX_TREE(&fi->inmem_root, GFP_NOFS); |
88b88a66 JK |
416 | INIT_LIST_HEAD(&fi->inmem_pages); |
417 | mutex_init(&fi->inmem_lock); | |
aff063e2 JK |
418 | |
419 | set_inode_flag(fi, FI_NEW_INODE); | |
420 | ||
444c580f JK |
421 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
422 | set_inode_flag(fi, FI_INLINE_XATTR); | |
423 | ||
ab9fa662 JK |
424 | /* Will be used by directory only */ |
425 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
426 | ||
57e5055b JK |
427 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
428 | fi->i_crypt_info = NULL; | |
429 | #endif | |
aff063e2 JK |
430 | return &fi->vfs_inode; |
431 | } | |
432 | ||
531ad7d5 JK |
433 | static int f2fs_drop_inode(struct inode *inode) |
434 | { | |
435 | /* | |
436 | * This is to avoid a deadlock condition like below. | |
437 | * writeback_single_inode(inode) | |
438 | * - f2fs_write_data_page | |
439 | * - f2fs_gc -> iput -> evict | |
440 | * - inode_wait_for_writeback(inode) | |
441 | */ | |
06e1bc05 JK |
442 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
443 | if (!inode->i_nlink && !is_bad_inode(inode)) { | |
444 | spin_unlock(&inode->i_lock); | |
445 | ||
446 | /* some remained atomic pages should discarded */ | |
447 | if (f2fs_is_atomic_file(inode)) | |
448 | commit_inmem_pages(inode, true); | |
449 | ||
450 | sb_start_intwrite(inode->i_sb); | |
451 | i_size_write(inode, 0); | |
452 | ||
453 | if (F2FS_HAS_BLOCKS(inode)) | |
454 | f2fs_truncate(inode); | |
455 | ||
456 | sb_end_intwrite(inode->i_sb); | |
457 | ||
458 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
459 | if (F2FS_I(inode)->i_crypt_info) | |
26bf3dc7 JK |
460 | f2fs_free_encryption_info(inode, |
461 | F2FS_I(inode)->i_crypt_info); | |
06e1bc05 JK |
462 | #endif |
463 | spin_lock(&inode->i_lock); | |
464 | } | |
531ad7d5 | 465 | return 0; |
06e1bc05 | 466 | } |
531ad7d5 JK |
467 | return generic_drop_inode(inode); |
468 | } | |
469 | ||
b3783873 JK |
470 | /* |
471 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
472 | * | |
473 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
474 | */ | |
475 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
476 | { | |
477 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); | |
b3783873 JK |
478 | } |
479 | ||
aff063e2 JK |
480 | static void f2fs_i_callback(struct rcu_head *head) |
481 | { | |
482 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
483 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
484 | } | |
485 | ||
25ca923b | 486 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 JK |
487 | { |
488 | call_rcu(&inode->i_rcu, f2fs_i_callback); | |
489 | } | |
490 | ||
491 | static void f2fs_put_super(struct super_block *sb) | |
492 | { | |
493 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
494 | ||
5e176d54 JK |
495 | if (sbi->s_proc) { |
496 | remove_proc_entry("segment_info", sbi->s_proc); | |
497 | remove_proc_entry(sb->s_id, f2fs_proc_root); | |
498 | } | |
b59d0bae | 499 | kobject_del(&sbi->s_kobj); |
5e176d54 | 500 | |
aff063e2 JK |
501 | f2fs_destroy_stats(sbi); |
502 | stop_gc_thread(sbi); | |
503 | ||
85dc2f2c JK |
504 | /* |
505 | * We don't need to do checkpoint when superblock is clean. | |
506 | * But, the previous checkpoint was not done by umount, it needs to do | |
507 | * clean checkpoint again. | |
508 | */ | |
caf0047e | 509 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
85dc2f2c | 510 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
511 | struct cp_control cpc = { |
512 | .reason = CP_UMOUNT, | |
513 | }; | |
514 | write_checkpoint(sbi, &cpc); | |
515 | } | |
aff063e2 | 516 | |
cf779cab JK |
517 | /* |
518 | * normally superblock is clean, so we need to release this. | |
519 | * In addition, EIO will skip do checkpoint, we need this as well. | |
520 | */ | |
6f12ac25 | 521 | release_dirty_inode(sbi); |
4b2fecc8 | 522 | release_discard_addrs(sbi); |
6f12ac25 | 523 | |
aff063e2 JK |
524 | iput(sbi->node_inode); |
525 | iput(sbi->meta_inode); | |
526 | ||
527 | /* destroy f2fs internal modules */ | |
528 | destroy_node_manager(sbi); | |
529 | destroy_segment_manager(sbi); | |
530 | ||
531 | kfree(sbi->ckpt); | |
b59d0bae NJ |
532 | kobject_put(&sbi->s_kobj); |
533 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
534 | |
535 | sb->s_fs_info = NULL; | |
536 | brelse(sbi->raw_super_buf); | |
537 | kfree(sbi); | |
538 | } | |
539 | ||
540 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
541 | { | |
542 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
aff063e2 | 543 | |
a2a4a7e4 NJ |
544 | trace_f2fs_sync_fs(sb, sync); |
545 | ||
b7473754 | 546 | if (sync) { |
d5053a34 JK |
547 | struct cp_control cpc; |
548 | ||
119ee914 JK |
549 | cpc.reason = __get_cp_reason(sbi); |
550 | ||
b7473754 | 551 | mutex_lock(&sbi->gc_mutex); |
75ab4cb8 | 552 | write_checkpoint(sbi, &cpc); |
b7473754 JK |
553 | mutex_unlock(&sbi->gc_mutex); |
554 | } else { | |
7d82db83 | 555 | f2fs_balance_fs(sbi); |
b7473754 | 556 | } |
05ca3632 | 557 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 558 | |
64c576fe | 559 | return 0; |
aff063e2 JK |
560 | } |
561 | ||
d6212a5f CL |
562 | static int f2fs_freeze(struct super_block *sb) |
563 | { | |
564 | int err; | |
565 | ||
77888c1e | 566 | if (f2fs_readonly(sb)) |
d6212a5f CL |
567 | return 0; |
568 | ||
569 | err = f2fs_sync_fs(sb, 1); | |
570 | return err; | |
571 | } | |
572 | ||
573 | static int f2fs_unfreeze(struct super_block *sb) | |
574 | { | |
575 | return 0; | |
576 | } | |
577 | ||
aff063e2 JK |
578 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
579 | { | |
580 | struct super_block *sb = dentry->d_sb; | |
581 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
582 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
583 | block_t total_count, user_block_count, start_count, ovp_count; | |
584 | ||
585 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
586 | user_block_count = sbi->user_block_count; | |
587 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
588 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
589 | buf->f_type = F2FS_SUPER_MAGIC; | |
590 | buf->f_bsize = sbi->blocksize; | |
591 | ||
592 | buf->f_blocks = total_count - start_count; | |
593 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; | |
594 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); | |
595 | ||
c200b1aa CY |
596 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
597 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 598 | |
5a20d339 | 599 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
600 | buf->f_fsid.val[0] = (u32)id; |
601 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
602 | ||
603 | return 0; | |
604 | } | |
605 | ||
606 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
607 | { | |
608 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
609 | ||
b270ad6f | 610 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) |
696c018c | 611 | seq_printf(seq, ",background_gc=%s", "on"); |
aff063e2 | 612 | else |
696c018c | 613 | seq_printf(seq, ",background_gc=%s", "off"); |
aff063e2 JK |
614 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
615 | seq_puts(seq, ",disable_roll_forward"); | |
616 | if (test_opt(sbi, DISCARD)) | |
617 | seq_puts(seq, ",discard"); | |
618 | if (test_opt(sbi, NOHEAP)) | |
619 | seq_puts(seq, ",no_heap_alloc"); | |
620 | #ifdef CONFIG_F2FS_FS_XATTR | |
621 | if (test_opt(sbi, XATTR_USER)) | |
622 | seq_puts(seq, ",user_xattr"); | |
623 | else | |
624 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
625 | if (test_opt(sbi, INLINE_XATTR)) |
626 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
627 | #endif |
628 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
629 | if (test_opt(sbi, POSIX_ACL)) | |
630 | seq_puts(seq, ",acl"); | |
631 | else | |
632 | seq_puts(seq, ",noacl"); | |
633 | #endif | |
634 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 635 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
636 | if (test_opt(sbi, INLINE_DATA)) |
637 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
638 | else |
639 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
640 | if (test_opt(sbi, INLINE_DENTRY)) |
641 | seq_puts(seq, ",inline_dentry"); | |
b270ad6f | 642 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 643 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
644 | if (test_opt(sbi, NOBARRIER)) |
645 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
646 | if (test_opt(sbi, FASTBOOT)) |
647 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
648 | if (test_opt(sbi, EXTENT_CACHE)) |
649 | seq_puts(seq, ",extent_cache"); | |
aff063e2 JK |
650 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
651 | ||
652 | return 0; | |
653 | } | |
654 | ||
5e176d54 JK |
655 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
656 | { | |
657 | struct super_block *sb = seq->private; | |
658 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
659 | unsigned int total_segs = |
660 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
661 | int i; |
662 | ||
90aa6dc9 CY |
663 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
664 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
665 | ||
5e176d54 | 666 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
667 | struct seg_entry *se = get_seg_entry(sbi, i); |
668 | ||
669 | if ((i % 10) == 0) | |
670 | seq_printf(seq, "%-5d", i); | |
671 | seq_printf(seq, "%d|%-3u", se->type, | |
672 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
673 | if ((i % 10) == 9 || i == (total_segs - 1)) |
674 | seq_putc(seq, '\n'); | |
5e176d54 | 675 | else |
46c04366 | 676 | seq_putc(seq, ' '); |
5e176d54 | 677 | } |
46c04366 | 678 | |
5e176d54 JK |
679 | return 0; |
680 | } | |
681 | ||
682 | static int segment_info_open_fs(struct inode *inode, struct file *file) | |
683 | { | |
684 | return single_open(file, segment_info_seq_show, PDE_DATA(inode)); | |
685 | } | |
686 | ||
687 | static const struct file_operations f2fs_seq_segment_info_fops = { | |
688 | .owner = THIS_MODULE, | |
689 | .open = segment_info_open_fs, | |
690 | .read = seq_read, | |
691 | .llseek = seq_lseek, | |
692 | .release = single_release, | |
693 | }; | |
694 | ||
498c5e9f YH |
695 | static void default_options(struct f2fs_sb_info *sbi) |
696 | { | |
697 | /* init some FS parameters */ | |
698 | sbi->active_logs = NR_CURSEG_TYPE; | |
699 | ||
700 | set_opt(sbi, BG_GC); | |
701 | set_opt(sbi, INLINE_DATA); | |
702 | ||
703 | #ifdef CONFIG_F2FS_FS_XATTR | |
704 | set_opt(sbi, XATTR_USER); | |
705 | #endif | |
706 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
707 | set_opt(sbi, POSIX_ACL); | |
708 | #endif | |
709 | } | |
710 | ||
696c018c NJ |
711 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
712 | { | |
713 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
714 | struct f2fs_mount_info org_mount_opt; | |
715 | int err, active_logs; | |
876dc59e GZ |
716 | bool need_restart_gc = false; |
717 | bool need_stop_gc = false; | |
696c018c | 718 | |
02b9984d TT |
719 | sync_filesystem(sb); |
720 | ||
696c018c NJ |
721 | /* |
722 | * Save the old mount options in case we | |
723 | * need to restore them. | |
724 | */ | |
725 | org_mount_opt = sbi->mount_opt; | |
726 | active_logs = sbi->active_logs; | |
727 | ||
26666c8a | 728 | sbi->mount_opt.opt = 0; |
498c5e9f | 729 | default_options(sbi); |
26666c8a | 730 | |
696c018c NJ |
731 | /* parse mount options */ |
732 | err = parse_options(sb, data); | |
733 | if (err) | |
734 | goto restore_opts; | |
735 | ||
736 | /* | |
737 | * Previous and new state of filesystem is RO, | |
876dc59e | 738 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 739 | */ |
6b2920a5 | 740 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
741 | goto skip; |
742 | ||
743 | /* | |
744 | * We stop the GC thread if FS is mounted as RO | |
745 | * or if background_gc = off is passed in mount | |
746 | * option. Also sync the filesystem. | |
747 | */ | |
748 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
749 | if (sbi->gc_thread) { | |
750 | stop_gc_thread(sbi); | |
751 | f2fs_sync_fs(sb, 1); | |
876dc59e | 752 | need_restart_gc = true; |
696c018c | 753 | } |
aba291b3 | 754 | } else if (!sbi->gc_thread) { |
696c018c NJ |
755 | err = start_gc_thread(sbi); |
756 | if (err) | |
757 | goto restore_opts; | |
876dc59e GZ |
758 | need_stop_gc = true; |
759 | } | |
760 | ||
761 | /* | |
762 | * We stop issue flush thread if FS is mounted as RO | |
763 | * or if flush_merge is not passed in mount option. | |
764 | */ | |
765 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 766 | destroy_flush_cmd_control(sbi); |
aba291b3 | 767 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
768 | err = create_flush_cmd_control(sbi); |
769 | if (err) | |
a688b9d9 | 770 | goto restore_gc; |
696c018c NJ |
771 | } |
772 | skip: | |
773 | /* Update the POSIXACL Flag */ | |
774 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
775 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
776 | return 0; | |
876dc59e GZ |
777 | restore_gc: |
778 | if (need_restart_gc) { | |
779 | if (start_gc_thread(sbi)) | |
780 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 781 | "background gc thread has stopped"); |
876dc59e GZ |
782 | } else if (need_stop_gc) { |
783 | stop_gc_thread(sbi); | |
784 | } | |
696c018c NJ |
785 | restore_opts: |
786 | sbi->mount_opt = org_mount_opt; | |
787 | sbi->active_logs = active_logs; | |
788 | return err; | |
789 | } | |
790 | ||
aff063e2 JK |
791 | static struct super_operations f2fs_sops = { |
792 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 793 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
794 | .destroy_inode = f2fs_destroy_inode, |
795 | .write_inode = f2fs_write_inode, | |
b3783873 | 796 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
797 | .show_options = f2fs_show_options, |
798 | .evict_inode = f2fs_evict_inode, | |
799 | .put_super = f2fs_put_super, | |
800 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
801 | .freeze_fs = f2fs_freeze, |
802 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 803 | .statfs = f2fs_statfs, |
696c018c | 804 | .remount_fs = f2fs_remount, |
aff063e2 JK |
805 | }; |
806 | ||
807 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, | |
808 | u64 ino, u32 generation) | |
809 | { | |
810 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
811 | struct inode *inode; | |
812 | ||
d6b7d4b3 | 813 | if (check_nid_range(sbi, ino)) |
910bb12d | 814 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
815 | |
816 | /* | |
817 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
818 | * However f2fs_iget currently does appropriate checks to handle stale | |
819 | * inodes so everything is OK. | |
820 | */ | |
821 | inode = f2fs_iget(sb, ino); | |
822 | if (IS_ERR(inode)) | |
823 | return ERR_CAST(inode); | |
6bacf52f | 824 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
825 | /* we didn't find the right inode.. */ |
826 | iput(inode); | |
827 | return ERR_PTR(-ESTALE); | |
828 | } | |
829 | return inode; | |
830 | } | |
831 | ||
832 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
833 | int fh_len, int fh_type) | |
834 | { | |
835 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
836 | f2fs_nfs_get_inode); | |
837 | } | |
838 | ||
839 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
840 | int fh_len, int fh_type) | |
841 | { | |
842 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
843 | f2fs_nfs_get_inode); | |
844 | } | |
845 | ||
846 | static const struct export_operations f2fs_export_ops = { | |
847 | .fh_to_dentry = f2fs_fh_to_dentry, | |
848 | .fh_to_parent = f2fs_fh_to_parent, | |
849 | .get_parent = f2fs_get_parent, | |
850 | }; | |
851 | ||
aff063e2 JK |
852 | static loff_t max_file_size(unsigned bits) |
853 | { | |
de93653f | 854 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
855 | loff_t leaf_count = ADDRS_PER_BLOCK; |
856 | ||
857 | /* two direct node blocks */ | |
858 | result += (leaf_count * 2); | |
859 | ||
860 | /* two indirect node blocks */ | |
861 | leaf_count *= NIDS_PER_BLOCK; | |
862 | result += (leaf_count * 2); | |
863 | ||
864 | /* one double indirect node block */ | |
865 | leaf_count *= NIDS_PER_BLOCK; | |
866 | result += leaf_count; | |
867 | ||
868 | result <<= bits; | |
869 | return result; | |
870 | } | |
871 | ||
a07ef784 NJ |
872 | static int sanity_check_raw_super(struct super_block *sb, |
873 | struct f2fs_super_block *raw_super) | |
aff063e2 JK |
874 | { |
875 | unsigned int blocksize; | |
876 | ||
a07ef784 NJ |
877 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
878 | f2fs_msg(sb, KERN_INFO, | |
879 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
880 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 881 | return 1; |
a07ef784 | 882 | } |
aff063e2 | 883 | |
5c9b4692 | 884 | /* Currently, support only 4KB page cache size */ |
885 | if (F2FS_BLKSIZE != PAGE_CACHE_SIZE) { | |
886 | f2fs_msg(sb, KERN_INFO, | |
14d7e9de | 887 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
5c9b4692 | 888 | PAGE_CACHE_SIZE); |
889 | return 1; | |
890 | } | |
891 | ||
aff063e2 JK |
892 | /* Currently, support only 4KB block size */ |
893 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 894 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
895 | f2fs_msg(sb, KERN_INFO, |
896 | "Invalid blocksize (%u), supports only 4KB\n", | |
897 | blocksize); | |
aff063e2 | 898 | return 1; |
a07ef784 | 899 | } |
5c9b4692 | 900 | |
55cf9cb6 CY |
901 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
902 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
903 | F2FS_MAX_LOG_SECTOR_SIZE || | |
904 | le32_to_cpu(raw_super->log_sectorsize) < | |
905 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
906 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
907 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 908 | return 1; |
a07ef784 | 909 | } |
55cf9cb6 CY |
910 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
911 | le32_to_cpu(raw_super->log_sectorsize) != | |
912 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
913 | f2fs_msg(sb, KERN_INFO, | |
914 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
915 | le32_to_cpu(raw_super->log_sectors_per_block), | |
916 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 917 | return 1; |
a07ef784 | 918 | } |
aff063e2 JK |
919 | return 0; |
920 | } | |
921 | ||
577e3495 | 922 | static int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
923 | { |
924 | unsigned int total, fsmeta; | |
577e3495 JK |
925 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
926 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
927 | |
928 | total = le32_to_cpu(raw_super->segment_count); | |
929 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
930 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
931 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
932 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
933 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
934 | ||
6bacf52f | 935 | if (unlikely(fsmeta >= total)) |
aff063e2 | 936 | return 1; |
577e3495 | 937 | |
1e968fdf | 938 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
939 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
940 | return 1; | |
941 | } | |
aff063e2 JK |
942 | return 0; |
943 | } | |
944 | ||
945 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
946 | { | |
947 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
948 | int i; | |
949 | ||
950 | sbi->log_sectors_per_block = | |
951 | le32_to_cpu(raw_super->log_sectors_per_block); | |
952 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
953 | sbi->blocksize = 1 << sbi->log_blocksize; | |
954 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
955 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
956 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
957 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
958 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
959 | sbi->total_node_count = | |
960 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
961 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
962 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
963 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
964 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 965 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 966 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 JK |
967 | |
968 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
969 | atomic_set(&sbi->nr_pages[i], 0); | |
ab9fa662 JK |
970 | |
971 | sbi->dir_level = DEF_DIR_LEVEL; | |
caf0047e | 972 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
aff063e2 JK |
973 | } |
974 | ||
9076a75f GZ |
975 | /* |
976 | * Read f2fs raw super block. | |
977 | * Because we have two copies of super block, so read the first one at first, | |
978 | * if the first one is invalid, move to read the second one. | |
979 | */ | |
980 | static int read_raw_super_block(struct super_block *sb, | |
981 | struct f2fs_super_block **raw_super, | |
da554e48 | 982 | struct buffer_head **raw_super_buf, |
983 | int *recovery) | |
14d7e9de | 984 | { |
9076a75f | 985 | int block = 0; |
da554e48 | 986 | struct buffer_head *buffer; |
987 | struct f2fs_super_block *super; | |
988 | int err = 0; | |
14d7e9de | 989 | |
9076a75f | 990 | retry: |
da554e48 | 991 | buffer = sb_bread(sb, block); |
992 | if (!buffer) { | |
993 | *recovery = 1; | |
9076a75f GZ |
994 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", |
995 | block + 1); | |
996 | if (block == 0) { | |
997 | block++; | |
998 | goto retry; | |
999 | } else { | |
da554e48 | 1000 | err = -EIO; |
1001 | goto out; | |
9076a75f | 1002 | } |
14d7e9de | 1003 | } |
1004 | ||
da554e48 | 1005 | super = (struct f2fs_super_block *) |
1006 | ((char *)(buffer)->b_data + F2FS_SUPER_OFFSET); | |
14d7e9de | 1007 | |
1008 | /* sanity checking of raw super */ | |
da554e48 | 1009 | if (sanity_check_raw_super(sb, super)) { |
1010 | brelse(buffer); | |
1011 | *recovery = 1; | |
6c311ec6 CF |
1012 | f2fs_msg(sb, KERN_ERR, |
1013 | "Can't find valid F2FS filesystem in %dth superblock", | |
1014 | block + 1); | |
6bacf52f | 1015 | if (block == 0) { |
9076a75f GZ |
1016 | block++; |
1017 | goto retry; | |
1018 | } else { | |
da554e48 | 1019 | err = -EINVAL; |
1020 | goto out; | |
9076a75f GZ |
1021 | } |
1022 | } | |
14d7e9de | 1023 | |
da554e48 | 1024 | if (!*raw_super) { |
1025 | *raw_super_buf = buffer; | |
1026 | *raw_super = super; | |
1027 | } else { | |
1028 | /* already have a valid superblock */ | |
1029 | brelse(buffer); | |
1030 | } | |
1031 | ||
1032 | /* check the validity of the second superblock */ | |
1033 | if (block == 0) { | |
1034 | block++; | |
1035 | goto retry; | |
1036 | } | |
1037 | ||
1038 | out: | |
1039 | /* No valid superblock */ | |
1040 | if (!*raw_super) | |
1041 | return err; | |
1042 | ||
9076a75f | 1043 | return 0; |
14d7e9de | 1044 | } |
1045 | ||
c5bda1c8 | 1046 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad JK |
1047 | { |
1048 | struct buffer_head *sbh = sbi->raw_super_buf; | |
1049 | sector_t block = sbh->b_blocknr; | |
1050 | int err; | |
1051 | ||
1052 | /* write back-up superblock first */ | |
1053 | sbh->b_blocknr = block ? 0 : 1; | |
1054 | mark_buffer_dirty(sbh); | |
1055 | err = sync_dirty_buffer(sbh); | |
1056 | ||
1057 | sbh->b_blocknr = block; | |
c5bda1c8 CY |
1058 | |
1059 | /* if we are in recovery path, skip writing valid superblock */ | |
1060 | if (recover || err) | |
26d815ad JK |
1061 | goto out; |
1062 | ||
1063 | /* write current valid superblock */ | |
1064 | mark_buffer_dirty(sbh); | |
1065 | err = sync_dirty_buffer(sbh); | |
1066 | out: | |
1067 | clear_buffer_write_io_error(sbh); | |
1068 | set_buffer_uptodate(sbh); | |
1069 | return err; | |
1070 | } | |
1071 | ||
aff063e2 JK |
1072 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1073 | { | |
1074 | struct f2fs_sb_info *sbi; | |
da554e48 | 1075 | struct f2fs_super_block *raw_super; |
aff063e2 JK |
1076 | struct buffer_head *raw_super_buf; |
1077 | struct inode *root; | |
da554e48 | 1078 | long err; |
2adc3505 | 1079 | bool retry = true, need_fsck = false; |
dabc4a5c | 1080 | char *options = NULL; |
da554e48 | 1081 | int recovery, i; |
aff063e2 | 1082 | |
ed2e621a | 1083 | try_onemore: |
da554e48 | 1084 | err = -EINVAL; |
1085 | raw_super = NULL; | |
1086 | raw_super_buf = NULL; | |
1087 | recovery = 0; | |
1088 | ||
aff063e2 JK |
1089 | /* allocate memory for f2fs-specific super block info */ |
1090 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1091 | if (!sbi) | |
1092 | return -ENOMEM; | |
1093 | ||
ff9234ad | 1094 | /* set a block size */ |
6bacf52f | 1095 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1096 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1097 | goto free_sbi; |
a07ef784 | 1098 | } |
aff063e2 | 1099 | |
da554e48 | 1100 | err = read_raw_super_block(sb, &raw_super, &raw_super_buf, &recovery); |
9076a75f GZ |
1101 | if (err) |
1102 | goto free_sbi; | |
1103 | ||
5fb08372 | 1104 | sb->s_fs_info = sbi; |
498c5e9f | 1105 | default_options(sbi); |
aff063e2 | 1106 | /* parse mount options */ |
dabc4a5c JK |
1107 | options = kstrdup((const char *)data, GFP_KERNEL); |
1108 | if (data && !options) { | |
1109 | err = -ENOMEM; | |
aff063e2 | 1110 | goto free_sb_buf; |
dabc4a5c JK |
1111 | } |
1112 | ||
1113 | err = parse_options(sb, options); | |
1114 | if (err) | |
1115 | goto free_options; | |
aff063e2 | 1116 | |
25ca923b | 1117 | sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize)); |
aff063e2 JK |
1118 | sb->s_max_links = F2FS_LINK_MAX; |
1119 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1120 | ||
1121 | sb->s_op = &f2fs_sops; | |
1122 | sb->s_xattr = f2fs_xattr_handlers; | |
1123 | sb->s_export_op = &f2fs_export_ops; | |
1124 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1125 | sb->s_time_gran = 1; |
1126 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1127 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1128 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1129 | ||
1130 | /* init f2fs-specific super block info */ | |
1131 | sbi->sb = sb; | |
1132 | sbi->raw_super = raw_super; | |
1133 | sbi->raw_super_buf = raw_super_buf; | |
1134 | mutex_init(&sbi->gc_mutex); | |
5463e7c1 | 1135 | mutex_init(&sbi->writepages); |
aff063e2 | 1136 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1137 | init_rwsem(&sbi->node_write); |
caf0047e | 1138 | clear_sbi_flag(sbi, SBI_POR_DOING); |
aff063e2 | 1139 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1140 | |
df0f8dc0 | 1141 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1142 | sbi->read_io.sbi = sbi; |
1143 | sbi->read_io.bio = NULL; | |
1144 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1145 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1146 | sbi->write_io[i].sbi = sbi; |
1147 | sbi->write_io[i].bio = NULL; | |
1148 | } | |
971767ca | 1149 | |
e479556b | 1150 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1151 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1152 | init_sb_info(sbi); |
1153 | ||
1154 | /* get an inode for meta space */ | |
1155 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1156 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1157 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1158 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1159 | goto free_options; |
aff063e2 JK |
1160 | } |
1161 | ||
1162 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1163 | if (err) { |
1164 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1165 | goto free_meta_inode; |
a07ef784 | 1166 | } |
aff063e2 JK |
1167 | |
1168 | /* sanity checking of checkpoint */ | |
1169 | err = -EINVAL; | |
577e3495 | 1170 | if (sanity_check_ckpt(sbi)) { |
a07ef784 | 1171 | f2fs_msg(sb, KERN_ERR, "Invalid F2FS checkpoint"); |
aff063e2 | 1172 | goto free_cp; |
a07ef784 | 1173 | } |
aff063e2 JK |
1174 | |
1175 | sbi->total_valid_node_count = | |
1176 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
1177 | sbi->total_valid_inode_count = | |
1178 | le32_to_cpu(sbi->ckpt->valid_inode_count); | |
1179 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); | |
1180 | sbi->total_valid_block_count = | |
1181 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1182 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1183 | sbi->alloc_valid_block_count = 0; | |
1184 | INIT_LIST_HEAD(&sbi->dir_inode_list); | |
1185 | spin_lock_init(&sbi->dir_inode_lock); | |
1186 | ||
1dcc336b CY |
1187 | init_extent_cache_info(sbi); |
1188 | ||
6451e041 | 1189 | init_ino_entry_info(sbi); |
aff063e2 JK |
1190 | |
1191 | /* setup f2fs internal modules */ | |
1192 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1193 | if (err) { |
1194 | f2fs_msg(sb, KERN_ERR, | |
1195 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1196 | goto free_sm; |
a07ef784 | 1197 | } |
aff063e2 | 1198 | err = build_node_manager(sbi); |
a07ef784 NJ |
1199 | if (err) { |
1200 | f2fs_msg(sb, KERN_ERR, | |
1201 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1202 | goto free_nm; |
a07ef784 | 1203 | } |
aff063e2 JK |
1204 | |
1205 | build_gc_manager(sbi); | |
1206 | ||
1207 | /* get an inode for node space */ | |
1208 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1209 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1210 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1211 | err = PTR_ERR(sbi->node_inode); |
1212 | goto free_nm; | |
1213 | } | |
1214 | ||
1215 | /* if there are nt orphan nodes free them */ | |
8f99a946 | 1216 | recover_orphan_inodes(sbi); |
aff063e2 JK |
1217 | |
1218 | /* read root inode and dentry */ | |
1219 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1220 | if (IS_ERR(root)) { | |
a07ef784 | 1221 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1222 | err = PTR_ERR(root); |
1223 | goto free_node_inode; | |
1224 | } | |
8f99a946 | 1225 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1226 | iput(root); |
8f99a946 | 1227 | err = -EINVAL; |
9d847950 | 1228 | goto free_node_inode; |
8f99a946 | 1229 | } |
aff063e2 JK |
1230 | |
1231 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1232 | if (!sb->s_root) { | |
1233 | err = -ENOMEM; | |
1234 | goto free_root_inode; | |
1235 | } | |
1236 | ||
aff063e2 JK |
1237 | err = f2fs_build_stats(sbi); |
1238 | if (err) | |
6437d1b0 | 1239 | goto free_root_inode; |
aff063e2 | 1240 | |
5e176d54 JK |
1241 | if (f2fs_proc_root) |
1242 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1243 | ||
1244 | if (sbi->s_proc) | |
1245 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, | |
1246 | &f2fs_seq_segment_info_fops, sb); | |
1247 | ||
b59d0bae NJ |
1248 | sbi->s_kobj.kset = f2fs_kset; |
1249 | init_completion(&sbi->s_kobj_unregister); | |
1250 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1251 | "%s", sb->s_id); | |
1252 | if (err) | |
6437d1b0 | 1253 | goto free_proc; |
b59d0bae | 1254 | |
6437d1b0 JK |
1255 | /* recover fsynced data */ |
1256 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1257 | /* |
1258 | * mount should be failed, when device has readonly mode, and | |
1259 | * previous checkpoint was not done by clean system shutdown. | |
1260 | */ | |
1261 | if (bdev_read_only(sb->s_bdev) && | |
1262 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { | |
1263 | err = -EROFS; | |
1264 | goto free_kobj; | |
1265 | } | |
2adc3505 CY |
1266 | |
1267 | if (need_fsck) | |
1268 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1269 | ||
6437d1b0 | 1270 | err = recover_fsync_data(sbi); |
ed2e621a | 1271 | if (err) { |
2adc3505 | 1272 | need_fsck = true; |
6437d1b0 JK |
1273 | f2fs_msg(sb, KERN_ERR, |
1274 | "Cannot recover all fsync data errno=%ld", err); | |
ed2e621a JK |
1275 | goto free_kobj; |
1276 | } | |
6437d1b0 | 1277 | } |
b59d0bae | 1278 | |
6437d1b0 JK |
1279 | /* |
1280 | * If filesystem is not mounted as read-only then | |
1281 | * do start the gc_thread. | |
1282 | */ | |
6c029932 | 1283 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1284 | /* After POR, we can run background GC thread.*/ |
1285 | err = start_gc_thread(sbi); | |
1286 | if (err) | |
1287 | goto free_kobj; | |
1288 | } | |
dabc4a5c | 1289 | kfree(options); |
da554e48 | 1290 | |
1291 | /* recover broken superblock */ | |
1292 | if (recovery && !f2fs_readonly(sb) && !bdev_read_only(sb->s_bdev)) { | |
1293 | f2fs_msg(sb, KERN_INFO, "Recover invalid superblock"); | |
c5bda1c8 | 1294 | f2fs_commit_super(sbi, true); |
da554e48 | 1295 | } |
1296 | ||
aff063e2 | 1297 | return 0; |
6437d1b0 JK |
1298 | |
1299 | free_kobj: | |
1300 | kobject_del(&sbi->s_kobj); | |
1301 | free_proc: | |
1d15bd20 CY |
1302 | if (sbi->s_proc) { |
1303 | remove_proc_entry("segment_info", sbi->s_proc); | |
1304 | remove_proc_entry(sb->s_id, f2fs_proc_root); | |
1305 | } | |
1306 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1307 | free_root_inode: |
1308 | dput(sb->s_root); | |
1309 | sb->s_root = NULL; | |
1310 | free_node_inode: | |
1311 | iput(sbi->node_inode); | |
1312 | free_nm: | |
1313 | destroy_node_manager(sbi); | |
1314 | free_sm: | |
1315 | destroy_segment_manager(sbi); | |
1316 | free_cp: | |
1317 | kfree(sbi->ckpt); | |
1318 | free_meta_inode: | |
1319 | make_bad_inode(sbi->meta_inode); | |
1320 | iput(sbi->meta_inode); | |
dabc4a5c JK |
1321 | free_options: |
1322 | kfree(options); | |
aff063e2 JK |
1323 | free_sb_buf: |
1324 | brelse(raw_super_buf); | |
1325 | free_sbi: | |
1326 | kfree(sbi); | |
ed2e621a JK |
1327 | |
1328 | /* give only one another chance */ | |
1329 | if (retry) { | |
9df47ba7 | 1330 | retry = false; |
ed2e621a JK |
1331 | shrink_dcache_sb(sb); |
1332 | goto try_onemore; | |
1333 | } | |
aff063e2 JK |
1334 | return err; |
1335 | } | |
1336 | ||
1337 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1338 | const char *dev_name, void *data) | |
1339 | { | |
1340 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1341 | } | |
1342 | ||
30a5537f JK |
1343 | static void kill_f2fs_super(struct super_block *sb) |
1344 | { | |
1345 | if (sb->s_root) | |
caf0047e | 1346 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1347 | kill_block_super(sb); |
1348 | } | |
1349 | ||
aff063e2 JK |
1350 | static struct file_system_type f2fs_fs_type = { |
1351 | .owner = THIS_MODULE, | |
1352 | .name = "f2fs", | |
1353 | .mount = f2fs_mount, | |
30a5537f | 1354 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1355 | .fs_flags = FS_REQUIRES_DEV, |
1356 | }; | |
7f78e035 | 1357 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1358 | |
6e6093a8 | 1359 | static int __init init_inodecache(void) |
aff063e2 JK |
1360 | { |
1361 | f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache", | |
e8512d2e | 1362 | sizeof(struct f2fs_inode_info)); |
6bacf52f | 1363 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1364 | return -ENOMEM; |
1365 | return 0; | |
1366 | } | |
1367 | ||
1368 | static void destroy_inodecache(void) | |
1369 | { | |
1370 | /* | |
1371 | * Make sure all delayed rcu free inodes are flushed before we | |
1372 | * destroy cache. | |
1373 | */ | |
1374 | rcu_barrier(); | |
1375 | kmem_cache_destroy(f2fs_inode_cachep); | |
1376 | } | |
1377 | ||
1378 | static int __init init_f2fs_fs(void) | |
1379 | { | |
1380 | int err; | |
1381 | ||
c0508650 JK |
1382 | f2fs_build_trace_ios(); |
1383 | ||
aff063e2 JK |
1384 | err = init_inodecache(); |
1385 | if (err) | |
1386 | goto fail; | |
1387 | err = create_node_manager_caches(); | |
1388 | if (err) | |
9890ff3f | 1389 | goto free_inodecache; |
7fd9e544 | 1390 | err = create_segment_manager_caches(); |
aff063e2 | 1391 | if (err) |
9890ff3f | 1392 | goto free_node_manager_caches; |
aff063e2 JK |
1393 | err = create_checkpoint_caches(); |
1394 | if (err) | |
06292073 | 1395 | goto free_segment_manager_caches; |
1dcc336b CY |
1396 | err = create_extent_cache(); |
1397 | if (err) | |
1398 | goto free_checkpoint_caches; | |
b59d0bae | 1399 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1400 | if (!f2fs_kset) { |
1401 | err = -ENOMEM; | |
1dcc336b | 1402 | goto free_extent_cache; |
6e6b978c | 1403 | } |
cfc4d971 | 1404 | err = f2fs_init_crypto(); |
4589d25d | 1405 | if (err) |
9890ff3f | 1406 | goto free_kset; |
cfc4d971 JK |
1407 | err = register_filesystem(&f2fs_fs_type); |
1408 | if (err) | |
1409 | goto free_crypto; | |
4589d25d | 1410 | f2fs_create_root_stats(); |
5e176d54 | 1411 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
1412 | return 0; |
1413 | ||
cfc4d971 JK |
1414 | free_crypto: |
1415 | f2fs_exit_crypto(); | |
9890ff3f ZH |
1416 | free_kset: |
1417 | kset_unregister(f2fs_kset); | |
1dcc336b CY |
1418 | free_extent_cache: |
1419 | destroy_extent_cache(); | |
9890ff3f ZH |
1420 | free_checkpoint_caches: |
1421 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
1422 | free_segment_manager_caches: |
1423 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
1424 | free_node_manager_caches: |
1425 | destroy_node_manager_caches(); | |
1426 | free_inodecache: | |
1427 | destroy_inodecache(); | |
aff063e2 JK |
1428 | fail: |
1429 | return err; | |
1430 | } | |
1431 | ||
1432 | static void __exit exit_f2fs_fs(void) | |
1433 | { | |
5e176d54 | 1434 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 1435 | f2fs_destroy_root_stats(); |
aff063e2 | 1436 | unregister_filesystem(&f2fs_fs_type); |
cfc4d971 | 1437 | f2fs_exit_crypto(); |
fdf6c8be | 1438 | destroy_extent_cache(); |
aff063e2 | 1439 | destroy_checkpoint_caches(); |
5dcd8a71 | 1440 | destroy_segment_manager_caches(); |
aff063e2 JK |
1441 | destroy_node_manager_caches(); |
1442 | destroy_inodecache(); | |
b59d0bae | 1443 | kset_unregister(f2fs_kset); |
351f4fba | 1444 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
1445 | } |
1446 | ||
1447 | module_init(init_f2fs_fs) | |
1448 | module_exit(exit_f2fs_fs) | |
1449 | ||
1450 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
1451 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
1452 | MODULE_LICENSE("GPL"); |