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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 | 41 | |
73faec4d JK |
42 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
43 | u32 f2fs_fault_rate = 0; | |
44 | #endif | |
45 | ||
2658e50d JK |
46 | /* f2fs-wide shrinker description */ |
47 | static struct shrinker f2fs_shrinker_info = { | |
48 | .scan_objects = f2fs_shrink_scan, | |
49 | .count_objects = f2fs_shrink_count, | |
50 | .seeks = DEFAULT_SEEKS, | |
51 | }; | |
52 | ||
aff063e2 | 53 | enum { |
696c018c | 54 | Opt_gc_background, |
aff063e2 | 55 | Opt_disable_roll_forward, |
2d834bf9 | 56 | Opt_norecovery, |
aff063e2 JK |
57 | Opt_discard, |
58 | Opt_noheap, | |
4058c511 | 59 | Opt_user_xattr, |
aff063e2 | 60 | Opt_nouser_xattr, |
4058c511 | 61 | Opt_acl, |
aff063e2 JK |
62 | Opt_noacl, |
63 | Opt_active_logs, | |
64 | Opt_disable_ext_identify, | |
444c580f | 65 | Opt_inline_xattr, |
8274de77 | 66 | Opt_inline_data, |
5efd3c6f | 67 | Opt_inline_dentry, |
6b4afdd7 | 68 | Opt_flush_merge, |
0f7b2abd | 69 | Opt_nobarrier, |
d5053a34 | 70 | Opt_fastboot, |
89672159 | 71 | Opt_extent_cache, |
7daaea25 | 72 | Opt_noextent_cache, |
75342797 | 73 | Opt_noinline_data, |
343f40f0 | 74 | Opt_data_flush, |
73faec4d | 75 | Opt_fault_injection, |
aff063e2 JK |
76 | Opt_err, |
77 | }; | |
78 | ||
79 | static match_table_t f2fs_tokens = { | |
696c018c | 80 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 81 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 82 | {Opt_norecovery, "norecovery"}, |
aff063e2 JK |
83 | {Opt_discard, "discard"}, |
84 | {Opt_noheap, "no_heap"}, | |
4058c511 | 85 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 86 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 87 | {Opt_acl, "acl"}, |
aff063e2 JK |
88 | {Opt_noacl, "noacl"}, |
89 | {Opt_active_logs, "active_logs=%u"}, | |
90 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 91 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 92 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 93 | {Opt_inline_dentry, "inline_dentry"}, |
6b4afdd7 | 94 | {Opt_flush_merge, "flush_merge"}, |
0f7b2abd | 95 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 96 | {Opt_fastboot, "fastboot"}, |
89672159 | 97 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 98 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 99 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 100 | {Opt_data_flush, "data_flush"}, |
73faec4d | 101 | {Opt_fault_injection, "fault_injection=%u"}, |
aff063e2 JK |
102 | {Opt_err, NULL}, |
103 | }; | |
104 | ||
b59d0bae | 105 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
106 | enum { |
107 | GC_THREAD, /* struct f2fs_gc_thread */ | |
108 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 109 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 110 | F2FS_SBI, /* struct f2fs_sb_info */ |
ea91e9b0 JK |
111 | }; |
112 | ||
b59d0bae NJ |
113 | struct f2fs_attr { |
114 | struct attribute attr; | |
115 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
116 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
117 | const char *, size_t); | |
ea91e9b0 | 118 | int struct_type; |
b59d0bae NJ |
119 | int offset; |
120 | }; | |
121 | ||
ea91e9b0 JK |
122 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
123 | { | |
124 | if (struct_type == GC_THREAD) | |
125 | return (unsigned char *)sbi->gc_thread; | |
126 | else if (struct_type == SM_INFO) | |
127 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
128 | else if (struct_type == NM_INFO) |
129 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
130 | else if (struct_type == F2FS_SBI) |
131 | return (unsigned char *)sbi; | |
ea91e9b0 JK |
132 | return NULL; |
133 | } | |
134 | ||
8f1dbbbb SL |
135 | static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
136 | struct f2fs_sb_info *sbi, char *buf) | |
137 | { | |
138 | struct super_block *sb = sbi->sb; | |
139 | ||
140 | if (!sb->s_bdev->bd_part) | |
141 | return snprintf(buf, PAGE_SIZE, "0\n"); | |
142 | ||
143 | return snprintf(buf, PAGE_SIZE, "%llu\n", | |
144 | (unsigned long long)(sbi->kbytes_written + | |
145 | BD_PART_WRITTEN(sbi))); | |
146 | } | |
147 | ||
b59d0bae NJ |
148 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
149 | struct f2fs_sb_info *sbi, char *buf) | |
150 | { | |
ea91e9b0 | 151 | unsigned char *ptr = NULL; |
b59d0bae NJ |
152 | unsigned int *ui; |
153 | ||
ea91e9b0 JK |
154 | ptr = __struct_ptr(sbi, a->struct_type); |
155 | if (!ptr) | |
b59d0bae NJ |
156 | return -EINVAL; |
157 | ||
ea91e9b0 | 158 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
159 | |
160 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
161 | } | |
162 | ||
163 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
164 | struct f2fs_sb_info *sbi, | |
165 | const char *buf, size_t count) | |
166 | { | |
ea91e9b0 | 167 | unsigned char *ptr; |
b59d0bae NJ |
168 | unsigned long t; |
169 | unsigned int *ui; | |
170 | ssize_t ret; | |
171 | ||
ea91e9b0 JK |
172 | ptr = __struct_ptr(sbi, a->struct_type); |
173 | if (!ptr) | |
b59d0bae NJ |
174 | return -EINVAL; |
175 | ||
ea91e9b0 | 176 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
177 | |
178 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
179 | if (ret < 0) | |
180 | return ret; | |
181 | *ui = t; | |
182 | return count; | |
183 | } | |
184 | ||
185 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
186 | struct attribute *attr, char *buf) | |
187 | { | |
188 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
189 | s_kobj); | |
190 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
191 | ||
192 | return a->show ? a->show(a, sbi, buf) : 0; | |
193 | } | |
194 | ||
195 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
196 | const char *buf, size_t len) | |
197 | { | |
198 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
199 | s_kobj); | |
200 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
201 | ||
202 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
203 | } | |
204 | ||
205 | static void f2fs_sb_release(struct kobject *kobj) | |
206 | { | |
207 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
208 | s_kobj); | |
209 | complete(&sbi->s_kobj_unregister); | |
210 | } | |
211 | ||
ea91e9b0 | 212 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
213 | static struct f2fs_attr f2fs_attr_##_name = { \ |
214 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
215 | .show = _show, \ | |
216 | .store = _store, \ | |
ea91e9b0 JK |
217 | .struct_type = _struct_type, \ |
218 | .offset = _offset \ | |
b59d0bae NJ |
219 | } |
220 | ||
ea91e9b0 JK |
221 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
222 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
223 | f2fs_sbi_show, f2fs_sbi_store, \ | |
224 | offsetof(struct struct_name, elname)) | |
b59d0bae | 225 | |
8f1dbbbb SL |
226 | #define F2FS_GENERAL_RO_ATTR(name) \ |
227 | static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) | |
228 | ||
ea91e9b0 JK |
229 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
230 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
231 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
232 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
233 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 234 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 235 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
236 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
237 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 238 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 239 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
ea1a29a0 | 240 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
2304cb0c | 241 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
b1c57c1c | 242 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 243 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
6beceb54 | 244 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
d0239e1b | 245 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
8f1dbbbb | 246 | F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
b59d0bae NJ |
247 | |
248 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
249 | static struct attribute *f2fs_attrs[] = { | |
250 | ATTR_LIST(gc_min_sleep_time), | |
251 | ATTR_LIST(gc_max_sleep_time), | |
252 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 253 | ATTR_LIST(gc_idle), |
ea91e9b0 | 254 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 255 | ATTR_LIST(max_small_discards), |
bba681cb | 256 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
257 | ATTR_LIST(ipu_policy), |
258 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 259 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 260 | ATTR_LIST(max_victim_search), |
ab9fa662 | 261 | ATTR_LIST(dir_level), |
cdfc41c1 | 262 | ATTR_LIST(ram_thresh), |
ea1a29a0 | 263 | ATTR_LIST(ra_nid_pages), |
2304cb0c | 264 | ATTR_LIST(dirty_nats_ratio), |
60b99b48 | 265 | ATTR_LIST(cp_interval), |
d0239e1b | 266 | ATTR_LIST(idle_interval), |
8f1dbbbb | 267 | ATTR_LIST(lifetime_write_kbytes), |
b59d0bae NJ |
268 | NULL, |
269 | }; | |
270 | ||
271 | static const struct sysfs_ops f2fs_attr_ops = { | |
272 | .show = f2fs_attr_show, | |
273 | .store = f2fs_attr_store, | |
274 | }; | |
275 | ||
276 | static struct kobj_type f2fs_ktype = { | |
277 | .default_attrs = f2fs_attrs, | |
278 | .sysfs_ops = &f2fs_attr_ops, | |
279 | .release = f2fs_sb_release, | |
280 | }; | |
281 | ||
a07ef784 NJ |
282 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
283 | { | |
284 | struct va_format vaf; | |
285 | va_list args; | |
286 | ||
287 | va_start(args, fmt); | |
288 | vaf.fmt = fmt; | |
289 | vaf.va = &args; | |
290 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
291 | va_end(args); | |
292 | } | |
293 | ||
aff063e2 JK |
294 | static void init_once(void *foo) |
295 | { | |
296 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
297 | ||
aff063e2 JK |
298 | inode_init_once(&fi->vfs_inode); |
299 | } | |
300 | ||
696c018c NJ |
301 | static int parse_options(struct super_block *sb, char *options) |
302 | { | |
303 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 304 | struct request_queue *q; |
696c018c NJ |
305 | substring_t args[MAX_OPT_ARGS]; |
306 | char *p, *name; | |
307 | int arg = 0; | |
308 | ||
73faec4d JK |
309 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
310 | f2fs_fault_rate = 0; | |
311 | #endif | |
696c018c NJ |
312 | if (!options) |
313 | return 0; | |
314 | ||
315 | while ((p = strsep(&options, ",")) != NULL) { | |
316 | int token; | |
317 | if (!*p) | |
318 | continue; | |
319 | /* | |
320 | * Initialize args struct so we know whether arg was | |
321 | * found; some options take optional arguments. | |
322 | */ | |
323 | args[0].to = args[0].from = NULL; | |
324 | token = match_token(p, f2fs_tokens, args); | |
325 | ||
326 | switch (token) { | |
327 | case Opt_gc_background: | |
328 | name = match_strdup(&args[0]); | |
329 | ||
330 | if (!name) | |
331 | return -ENOMEM; | |
6aefd93b | 332 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 333 | set_opt(sbi, BG_GC); |
6aefd93b JK |
334 | clear_opt(sbi, FORCE_FG_GC); |
335 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 336 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
337 | clear_opt(sbi, FORCE_FG_GC); |
338 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
339 | set_opt(sbi, BG_GC); | |
340 | set_opt(sbi, FORCE_FG_GC); | |
341 | } else { | |
696c018c NJ |
342 | kfree(name); |
343 | return -EINVAL; | |
344 | } | |
345 | kfree(name); | |
346 | break; | |
347 | case Opt_disable_roll_forward: | |
348 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
349 | break; | |
2d834bf9 JK |
350 | case Opt_norecovery: |
351 | /* this option mounts f2fs with ro */ | |
352 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
353 | if (!f2fs_readonly(sb)) | |
354 | return -EINVAL; | |
355 | break; | |
696c018c | 356 | case Opt_discard: |
09d54cdd CY |
357 | q = bdev_get_queue(sb->s_bdev); |
358 | if (blk_queue_discard(q)) { | |
359 | set_opt(sbi, DISCARD); | |
360 | } else { | |
361 | f2fs_msg(sb, KERN_WARNING, | |
362 | "mounting with \"discard\" option, but " | |
363 | "the device does not support discard"); | |
364 | } | |
696c018c NJ |
365 | break; |
366 | case Opt_noheap: | |
367 | set_opt(sbi, NOHEAP); | |
368 | break; | |
369 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
370 | case Opt_user_xattr: |
371 | set_opt(sbi, XATTR_USER); | |
372 | break; | |
696c018c NJ |
373 | case Opt_nouser_xattr: |
374 | clear_opt(sbi, XATTR_USER); | |
375 | break; | |
444c580f JK |
376 | case Opt_inline_xattr: |
377 | set_opt(sbi, INLINE_XATTR); | |
378 | break; | |
696c018c | 379 | #else |
4058c511 KA |
380 | case Opt_user_xattr: |
381 | f2fs_msg(sb, KERN_INFO, | |
382 | "user_xattr options not supported"); | |
383 | break; | |
696c018c NJ |
384 | case Opt_nouser_xattr: |
385 | f2fs_msg(sb, KERN_INFO, | |
386 | "nouser_xattr options not supported"); | |
387 | break; | |
444c580f JK |
388 | case Opt_inline_xattr: |
389 | f2fs_msg(sb, KERN_INFO, | |
390 | "inline_xattr options not supported"); | |
391 | break; | |
696c018c NJ |
392 | #endif |
393 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
394 | case Opt_acl: |
395 | set_opt(sbi, POSIX_ACL); | |
396 | break; | |
696c018c NJ |
397 | case Opt_noacl: |
398 | clear_opt(sbi, POSIX_ACL); | |
399 | break; | |
400 | #else | |
4058c511 KA |
401 | case Opt_acl: |
402 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
403 | break; | |
696c018c NJ |
404 | case Opt_noacl: |
405 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
406 | break; | |
407 | #endif | |
408 | case Opt_active_logs: | |
409 | if (args->from && match_int(args, &arg)) | |
410 | return -EINVAL; | |
411 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
412 | return -EINVAL; | |
413 | sbi->active_logs = arg; | |
414 | break; | |
415 | case Opt_disable_ext_identify: | |
416 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
417 | break; | |
8274de77 HL |
418 | case Opt_inline_data: |
419 | set_opt(sbi, INLINE_DATA); | |
420 | break; | |
5efd3c6f CY |
421 | case Opt_inline_dentry: |
422 | set_opt(sbi, INLINE_DENTRY); | |
423 | break; | |
6b4afdd7 JK |
424 | case Opt_flush_merge: |
425 | set_opt(sbi, FLUSH_MERGE); | |
426 | break; | |
0f7b2abd JK |
427 | case Opt_nobarrier: |
428 | set_opt(sbi, NOBARRIER); | |
429 | break; | |
d5053a34 JK |
430 | case Opt_fastboot: |
431 | set_opt(sbi, FASTBOOT); | |
432 | break; | |
89672159 CY |
433 | case Opt_extent_cache: |
434 | set_opt(sbi, EXTENT_CACHE); | |
435 | break; | |
7daaea25 JK |
436 | case Opt_noextent_cache: |
437 | clear_opt(sbi, EXTENT_CACHE); | |
438 | break; | |
75342797 WL |
439 | case Opt_noinline_data: |
440 | clear_opt(sbi, INLINE_DATA); | |
441 | break; | |
343f40f0 CY |
442 | case Opt_data_flush: |
443 | set_opt(sbi, DATA_FLUSH); | |
444 | break; | |
73faec4d JK |
445 | case Opt_fault_injection: |
446 | if (args->from && match_int(args, &arg)) | |
447 | return -EINVAL; | |
448 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
449 | f2fs_fault_rate = arg; | |
450 | #else | |
451 | f2fs_msg(sb, KERN_INFO, | |
452 | "FAULT_INJECTION was not selected"); | |
453 | #endif | |
454 | break; | |
696c018c NJ |
455 | default: |
456 | f2fs_msg(sb, KERN_ERR, | |
457 | "Unrecognized mount option \"%s\" or missing value", | |
458 | p); | |
459 | return -EINVAL; | |
460 | } | |
461 | } | |
462 | return 0; | |
463 | } | |
464 | ||
aff063e2 JK |
465 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
466 | { | |
467 | struct f2fs_inode_info *fi; | |
468 | ||
a0acdfe0 | 469 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
470 | if (!fi) |
471 | return NULL; | |
472 | ||
473 | init_once((void *) fi); | |
474 | ||
434720fa | 475 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 476 | fi->vfs_inode.i_version = 1; |
a7ffdbe2 | 477 | atomic_set(&fi->dirty_pages, 0); |
aff063e2 JK |
478 | fi->i_current_depth = 1; |
479 | fi->i_advise = 0; | |
d928bfbf | 480 | init_rwsem(&fi->i_sem); |
2710fd7e | 481 | INIT_LIST_HEAD(&fi->dirty_list); |
88b88a66 JK |
482 | INIT_LIST_HEAD(&fi->inmem_pages); |
483 | mutex_init(&fi->inmem_lock); | |
aff063e2 JK |
484 | |
485 | set_inode_flag(fi, FI_NEW_INODE); | |
486 | ||
444c580f JK |
487 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
488 | set_inode_flag(fi, FI_INLINE_XATTR); | |
489 | ||
ab9fa662 JK |
490 | /* Will be used by directory only */ |
491 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
aff063e2 JK |
492 | return &fi->vfs_inode; |
493 | } | |
494 | ||
531ad7d5 JK |
495 | static int f2fs_drop_inode(struct inode *inode) |
496 | { | |
497 | /* | |
498 | * This is to avoid a deadlock condition like below. | |
499 | * writeback_single_inode(inode) | |
500 | * - f2fs_write_data_page | |
501 | * - f2fs_gc -> iput -> evict | |
502 | * - inode_wait_for_writeback(inode) | |
503 | */ | |
06e1bc05 JK |
504 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
505 | if (!inode->i_nlink && !is_bad_inode(inode)) { | |
3e72f721 JK |
506 | /* to avoid evict_inode call simultaneously */ |
507 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
508 | spin_unlock(&inode->i_lock); |
509 | ||
510 | /* some remained atomic pages should discarded */ | |
511 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 512 | drop_inmem_pages(inode); |
06e1bc05 | 513 | |
3e72f721 JK |
514 | /* should remain fi->extent_tree for writepage */ |
515 | f2fs_destroy_extent_node(inode); | |
516 | ||
06e1bc05 JK |
517 | sb_start_intwrite(inode->i_sb); |
518 | i_size_write(inode, 0); | |
519 | ||
520 | if (F2FS_HAS_BLOCKS(inode)) | |
55f57d2c | 521 | f2fs_truncate(inode, true); |
06e1bc05 JK |
522 | |
523 | sb_end_intwrite(inode->i_sb); | |
524 | ||
0b81d077 | 525 | fscrypt_put_encryption_info(inode, NULL); |
06e1bc05 | 526 | spin_lock(&inode->i_lock); |
3e72f721 | 527 | atomic_dec(&inode->i_count); |
06e1bc05 | 528 | } |
531ad7d5 | 529 | return 0; |
06e1bc05 | 530 | } |
531ad7d5 JK |
531 | return generic_drop_inode(inode); |
532 | } | |
533 | ||
b3783873 JK |
534 | /* |
535 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
536 | * | |
537 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
538 | */ | |
539 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
540 | { | |
541 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); | |
b3783873 JK |
542 | } |
543 | ||
aff063e2 JK |
544 | static void f2fs_i_callback(struct rcu_head *head) |
545 | { | |
546 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
547 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
548 | } | |
549 | ||
25ca923b | 550 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 JK |
551 | { |
552 | call_rcu(&inode->i_rcu, f2fs_i_callback); | |
553 | } | |
554 | ||
555 | static void f2fs_put_super(struct super_block *sb) | |
556 | { | |
557 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
558 | ||
5e176d54 JK |
559 | if (sbi->s_proc) { |
560 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 561 | remove_proc_entry("segment_bits", sbi->s_proc); |
5e176d54 JK |
562 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
563 | } | |
b59d0bae | 564 | kobject_del(&sbi->s_kobj); |
5e176d54 | 565 | |
aff063e2 JK |
566 | stop_gc_thread(sbi); |
567 | ||
2658e50d JK |
568 | /* prevent remaining shrinker jobs */ |
569 | mutex_lock(&sbi->umount_mutex); | |
570 | ||
85dc2f2c JK |
571 | /* |
572 | * We don't need to do checkpoint when superblock is clean. | |
573 | * But, the previous checkpoint was not done by umount, it needs to do | |
574 | * clean checkpoint again. | |
575 | */ | |
caf0047e | 576 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
85dc2f2c | 577 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
578 | struct cp_control cpc = { |
579 | .reason = CP_UMOUNT, | |
580 | }; | |
581 | write_checkpoint(sbi, &cpc); | |
582 | } | |
aff063e2 | 583 | |
eca616f8 JK |
584 | /* write_checkpoint can update stat informaion */ |
585 | f2fs_destroy_stats(sbi); | |
586 | ||
cf779cab JK |
587 | /* |
588 | * normally superblock is clean, so we need to release this. | |
589 | * In addition, EIO will skip do checkpoint, we need this as well. | |
590 | */ | |
a49324f1 | 591 | release_ino_entry(sbi); |
4b2fecc8 | 592 | release_discard_addrs(sbi); |
6f12ac25 | 593 | |
2658e50d JK |
594 | f2fs_leave_shrinker(sbi); |
595 | mutex_unlock(&sbi->umount_mutex); | |
596 | ||
17c19120 | 597 | /* our cp_error case, we can wait for any writeback page */ |
406657dd CY |
598 | if (get_pages(sbi, F2FS_WRITEBACK)) |
599 | f2fs_flush_merged_bios(sbi); | |
17c19120 | 600 | |
aff063e2 JK |
601 | iput(sbi->node_inode); |
602 | iput(sbi->meta_inode); | |
603 | ||
604 | /* destroy f2fs internal modules */ | |
605 | destroy_node_manager(sbi); | |
606 | destroy_segment_manager(sbi); | |
607 | ||
608 | kfree(sbi->ckpt); | |
b59d0bae NJ |
609 | kobject_put(&sbi->s_kobj); |
610 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
611 | |
612 | sb->s_fs_info = NULL; | |
43b6573b KM |
613 | if (sbi->s_chksum_driver) |
614 | crypto_free_shash(sbi->s_chksum_driver); | |
b39f0de2 | 615 | kfree(sbi->raw_super); |
aff063e2 JK |
616 | kfree(sbi); |
617 | } | |
618 | ||
619 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
620 | { | |
621 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 622 | int err = 0; |
aff063e2 | 623 | |
a2a4a7e4 NJ |
624 | trace_f2fs_sync_fs(sb, sync); |
625 | ||
b7473754 | 626 | if (sync) { |
d5053a34 JK |
627 | struct cp_control cpc; |
628 | ||
119ee914 JK |
629 | cpc.reason = __get_cp_reason(sbi); |
630 | ||
b7473754 | 631 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 632 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 633 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 634 | } |
05ca3632 | 635 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 636 | |
c34f42e2 | 637 | return err; |
aff063e2 JK |
638 | } |
639 | ||
d6212a5f CL |
640 | static int f2fs_freeze(struct super_block *sb) |
641 | { | |
642 | int err; | |
643 | ||
77888c1e | 644 | if (f2fs_readonly(sb)) |
d6212a5f CL |
645 | return 0; |
646 | ||
647 | err = f2fs_sync_fs(sb, 1); | |
648 | return err; | |
649 | } | |
650 | ||
651 | static int f2fs_unfreeze(struct super_block *sb) | |
652 | { | |
653 | return 0; | |
654 | } | |
655 | ||
aff063e2 JK |
656 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
657 | { | |
658 | struct super_block *sb = dentry->d_sb; | |
659 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
660 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
661 | block_t total_count, user_block_count, start_count, ovp_count; | |
662 | ||
663 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
664 | user_block_count = sbi->user_block_count; | |
665 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
666 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
667 | buf->f_type = F2FS_SUPER_MAGIC; | |
668 | buf->f_bsize = sbi->blocksize; | |
669 | ||
670 | buf->f_blocks = total_count - start_count; | |
671 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; | |
672 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); | |
673 | ||
c200b1aa CY |
674 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
675 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 676 | |
5a20d339 | 677 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
678 | buf->f_fsid.val[0] = (u32)id; |
679 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
680 | ||
681 | return 0; | |
682 | } | |
683 | ||
684 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
685 | { | |
686 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
687 | ||
6aefd93b JK |
688 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
689 | if (test_opt(sbi, FORCE_FG_GC)) | |
690 | seq_printf(seq, ",background_gc=%s", "sync"); | |
691 | else | |
692 | seq_printf(seq, ",background_gc=%s", "on"); | |
693 | } else { | |
696c018c | 694 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 695 | } |
aff063e2 JK |
696 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
697 | seq_puts(seq, ",disable_roll_forward"); | |
698 | if (test_opt(sbi, DISCARD)) | |
699 | seq_puts(seq, ",discard"); | |
700 | if (test_opt(sbi, NOHEAP)) | |
701 | seq_puts(seq, ",no_heap_alloc"); | |
702 | #ifdef CONFIG_F2FS_FS_XATTR | |
703 | if (test_opt(sbi, XATTR_USER)) | |
704 | seq_puts(seq, ",user_xattr"); | |
705 | else | |
706 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
707 | if (test_opt(sbi, INLINE_XATTR)) |
708 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
709 | #endif |
710 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
711 | if (test_opt(sbi, POSIX_ACL)) | |
712 | seq_puts(seq, ",acl"); | |
713 | else | |
714 | seq_puts(seq, ",noacl"); | |
715 | #endif | |
716 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 717 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
718 | if (test_opt(sbi, INLINE_DATA)) |
719 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
720 | else |
721 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
722 | if (test_opt(sbi, INLINE_DENTRY)) |
723 | seq_puts(seq, ",inline_dentry"); | |
b270ad6f | 724 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 725 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
726 | if (test_opt(sbi, NOBARRIER)) |
727 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
728 | if (test_opt(sbi, FASTBOOT)) |
729 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
730 | if (test_opt(sbi, EXTENT_CACHE)) |
731 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
732 | else |
733 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
734 | if (test_opt(sbi, DATA_FLUSH)) |
735 | seq_puts(seq, ",data_flush"); | |
aff063e2 JK |
736 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
737 | ||
738 | return 0; | |
739 | } | |
740 | ||
5e176d54 JK |
741 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
742 | { | |
743 | struct super_block *sb = seq->private; | |
744 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
745 | unsigned int total_segs = |
746 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
747 | int i; |
748 | ||
90aa6dc9 CY |
749 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
750 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
751 | ||
5e176d54 | 752 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
753 | struct seg_entry *se = get_seg_entry(sbi, i); |
754 | ||
755 | if ((i % 10) == 0) | |
01a5ad82 | 756 | seq_printf(seq, "%-10d", i); |
90aa6dc9 CY |
757 | seq_printf(seq, "%d|%-3u", se->type, |
758 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
759 | if ((i % 10) == 9 || i == (total_segs - 1)) |
760 | seq_putc(seq, '\n'); | |
5e176d54 | 761 | else |
46c04366 | 762 | seq_putc(seq, ' '); |
5e176d54 | 763 | } |
46c04366 | 764 | |
5e176d54 JK |
765 | return 0; |
766 | } | |
767 | ||
f00d6fa7 JK |
768 | static int segment_bits_seq_show(struct seq_file *seq, void *offset) |
769 | { | |
770 | struct super_block *sb = seq->private; | |
771 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
772 | unsigned int total_segs = | |
773 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
774 | int i, j; | |
775 | ||
776 | seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" | |
777 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
778 | ||
779 | for (i = 0; i < total_segs; i++) { | |
780 | struct seg_entry *se = get_seg_entry(sbi, i); | |
781 | ||
782 | seq_printf(seq, "%-10d", i); | |
783 | seq_printf(seq, "%d|%-3u|", se->type, | |
784 | get_valid_blocks(sbi, i, 1)); | |
785 | for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) | |
786 | seq_printf(seq, "%x ", se->cur_valid_map[j]); | |
787 | seq_putc(seq, '\n'); | |
788 | } | |
789 | return 0; | |
790 | } | |
791 | ||
b7a15f3d JK |
792 | #define F2FS_PROC_FILE_DEF(_name) \ |
793 | static int _name##_open_fs(struct inode *inode, struct file *file) \ | |
794 | { \ | |
795 | return single_open(file, _name##_seq_show, PDE_DATA(inode)); \ | |
796 | } \ | |
797 | \ | |
798 | static const struct file_operations f2fs_seq_##_name##_fops = { \ | |
799 | .owner = THIS_MODULE, \ | |
800 | .open = _name##_open_fs, \ | |
801 | .read = seq_read, \ | |
802 | .llseek = seq_lseek, \ | |
803 | .release = single_release, \ | |
5e176d54 JK |
804 | }; |
805 | ||
b7a15f3d | 806 | F2FS_PROC_FILE_DEF(segment_info); |
f00d6fa7 | 807 | F2FS_PROC_FILE_DEF(segment_bits); |
b7a15f3d | 808 | |
498c5e9f YH |
809 | static void default_options(struct f2fs_sb_info *sbi) |
810 | { | |
811 | /* init some FS parameters */ | |
812 | sbi->active_logs = NR_CURSEG_TYPE; | |
813 | ||
814 | set_opt(sbi, BG_GC); | |
815 | set_opt(sbi, INLINE_DATA); | |
3e72f721 | 816 | set_opt(sbi, EXTENT_CACHE); |
498c5e9f YH |
817 | |
818 | #ifdef CONFIG_F2FS_FS_XATTR | |
819 | set_opt(sbi, XATTR_USER); | |
820 | #endif | |
821 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
822 | set_opt(sbi, POSIX_ACL); | |
823 | #endif | |
824 | } | |
825 | ||
696c018c NJ |
826 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
827 | { | |
828 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
829 | struct f2fs_mount_info org_mount_opt; | |
830 | int err, active_logs; | |
876dc59e GZ |
831 | bool need_restart_gc = false; |
832 | bool need_stop_gc = false; | |
9cd81ce3 | 833 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
696c018c NJ |
834 | |
835 | /* | |
836 | * Save the old mount options in case we | |
837 | * need to restore them. | |
838 | */ | |
839 | org_mount_opt = sbi->mount_opt; | |
840 | active_logs = sbi->active_logs; | |
841 | ||
df728b0f JK |
842 | /* recover superblocks we couldn't write due to previous RO mount */ |
843 | if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { | |
844 | err = f2fs_commit_super(sbi, false); | |
845 | f2fs_msg(sb, KERN_INFO, | |
846 | "Try to recover all the superblocks, ret: %d", err); | |
847 | if (!err) | |
848 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
849 | } | |
850 | ||
26666c8a | 851 | sbi->mount_opt.opt = 0; |
498c5e9f | 852 | default_options(sbi); |
26666c8a | 853 | |
696c018c NJ |
854 | /* parse mount options */ |
855 | err = parse_options(sb, data); | |
856 | if (err) | |
857 | goto restore_opts; | |
858 | ||
859 | /* | |
860 | * Previous and new state of filesystem is RO, | |
876dc59e | 861 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 862 | */ |
6b2920a5 | 863 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
864 | goto skip; |
865 | ||
9cd81ce3 CY |
866 | /* disallow enable/disable extent_cache dynamically */ |
867 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
868 | err = -EINVAL; | |
869 | f2fs_msg(sbi->sb, KERN_WARNING, | |
870 | "switch extent_cache option is not allowed"); | |
871 | goto restore_opts; | |
872 | } | |
873 | ||
696c018c NJ |
874 | /* |
875 | * We stop the GC thread if FS is mounted as RO | |
876 | * or if background_gc = off is passed in mount | |
877 | * option. Also sync the filesystem. | |
878 | */ | |
879 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
880 | if (sbi->gc_thread) { | |
881 | stop_gc_thread(sbi); | |
876dc59e | 882 | need_restart_gc = true; |
696c018c | 883 | } |
aba291b3 | 884 | } else if (!sbi->gc_thread) { |
696c018c NJ |
885 | err = start_gc_thread(sbi); |
886 | if (err) | |
887 | goto restore_opts; | |
876dc59e GZ |
888 | need_stop_gc = true; |
889 | } | |
890 | ||
faa0e55b JK |
891 | if (*flags & MS_RDONLY) { |
892 | writeback_inodes_sb(sb, WB_REASON_SYNC); | |
893 | sync_inodes_sb(sb); | |
894 | ||
895 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
896 | set_sbi_flag(sbi, SBI_IS_CLOSE); | |
897 | f2fs_sync_fs(sb, 1); | |
898 | clear_sbi_flag(sbi, SBI_IS_CLOSE); | |
899 | } | |
900 | ||
876dc59e GZ |
901 | /* |
902 | * We stop issue flush thread if FS is mounted as RO | |
903 | * or if flush_merge is not passed in mount option. | |
904 | */ | |
905 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 906 | destroy_flush_cmd_control(sbi); |
aba291b3 | 907 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
908 | err = create_flush_cmd_control(sbi); |
909 | if (err) | |
a688b9d9 | 910 | goto restore_gc; |
696c018c NJ |
911 | } |
912 | skip: | |
913 | /* Update the POSIXACL Flag */ | |
df728b0f | 914 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
696c018c | 915 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
df728b0f | 916 | |
696c018c | 917 | return 0; |
876dc59e GZ |
918 | restore_gc: |
919 | if (need_restart_gc) { | |
920 | if (start_gc_thread(sbi)) | |
921 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 922 | "background gc thread has stopped"); |
876dc59e GZ |
923 | } else if (need_stop_gc) { |
924 | stop_gc_thread(sbi); | |
925 | } | |
696c018c NJ |
926 | restore_opts: |
927 | sbi->mount_opt = org_mount_opt; | |
928 | sbi->active_logs = active_logs; | |
929 | return err; | |
930 | } | |
931 | ||
aff063e2 JK |
932 | static struct super_operations f2fs_sops = { |
933 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 934 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
935 | .destroy_inode = f2fs_destroy_inode, |
936 | .write_inode = f2fs_write_inode, | |
b3783873 | 937 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
938 | .show_options = f2fs_show_options, |
939 | .evict_inode = f2fs_evict_inode, | |
940 | .put_super = f2fs_put_super, | |
941 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
942 | .freeze_fs = f2fs_freeze, |
943 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 944 | .statfs = f2fs_statfs, |
696c018c | 945 | .remount_fs = f2fs_remount, |
aff063e2 JK |
946 | }; |
947 | ||
0b81d077 JK |
948 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
949 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) | |
950 | { | |
951 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
952 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
953 | ctx, len, NULL); | |
954 | } | |
955 | ||
956 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, | |
957 | void *fs_data) | |
958 | { | |
959 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
960 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
961 | ctx, len, fs_data, XATTR_CREATE); | |
962 | } | |
963 | ||
964 | static unsigned f2fs_max_namelen(struct inode *inode) | |
965 | { | |
966 | return S_ISLNK(inode->i_mode) ? | |
967 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; | |
968 | } | |
969 | ||
970 | static struct fscrypt_operations f2fs_cryptops = { | |
971 | .get_context = f2fs_get_context, | |
972 | .set_context = f2fs_set_context, | |
973 | .is_encrypted = f2fs_encrypted_inode, | |
974 | .empty_dir = f2fs_empty_dir, | |
975 | .max_namelen = f2fs_max_namelen, | |
976 | }; | |
977 | #else | |
978 | static struct fscrypt_operations f2fs_cryptops = { | |
979 | .is_encrypted = f2fs_encrypted_inode, | |
980 | }; | |
981 | #endif | |
982 | ||
aff063e2 JK |
983 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
984 | u64 ino, u32 generation) | |
985 | { | |
986 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
987 | struct inode *inode; | |
988 | ||
d6b7d4b3 | 989 | if (check_nid_range(sbi, ino)) |
910bb12d | 990 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
991 | |
992 | /* | |
993 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
994 | * However f2fs_iget currently does appropriate checks to handle stale | |
995 | * inodes so everything is OK. | |
996 | */ | |
997 | inode = f2fs_iget(sb, ino); | |
998 | if (IS_ERR(inode)) | |
999 | return ERR_CAST(inode); | |
6bacf52f | 1000 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
1001 | /* we didn't find the right inode.. */ |
1002 | iput(inode); | |
1003 | return ERR_PTR(-ESTALE); | |
1004 | } | |
1005 | return inode; | |
1006 | } | |
1007 | ||
1008 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
1009 | int fh_len, int fh_type) | |
1010 | { | |
1011 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
1012 | f2fs_nfs_get_inode); | |
1013 | } | |
1014 | ||
1015 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
1016 | int fh_len, int fh_type) | |
1017 | { | |
1018 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
1019 | f2fs_nfs_get_inode); | |
1020 | } | |
1021 | ||
1022 | static const struct export_operations f2fs_export_ops = { | |
1023 | .fh_to_dentry = f2fs_fh_to_dentry, | |
1024 | .fh_to_parent = f2fs_fh_to_parent, | |
1025 | .get_parent = f2fs_get_parent, | |
1026 | }; | |
1027 | ||
e0afc4d6 | 1028 | static loff_t max_file_blocks(void) |
aff063e2 | 1029 | { |
de93653f | 1030 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
1031 | loff_t leaf_count = ADDRS_PER_BLOCK; |
1032 | ||
1033 | /* two direct node blocks */ | |
1034 | result += (leaf_count * 2); | |
1035 | ||
1036 | /* two indirect node blocks */ | |
1037 | leaf_count *= NIDS_PER_BLOCK; | |
1038 | result += (leaf_count * 2); | |
1039 | ||
1040 | /* one double indirect node block */ | |
1041 | leaf_count *= NIDS_PER_BLOCK; | |
1042 | result += leaf_count; | |
1043 | ||
aff063e2 JK |
1044 | return result; |
1045 | } | |
1046 | ||
fd694733 JK |
1047 | static int __f2fs_commit_super(struct buffer_head *bh, |
1048 | struct f2fs_super_block *super) | |
1049 | { | |
1050 | lock_buffer(bh); | |
1051 | if (super) | |
1052 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); | |
1053 | set_buffer_uptodate(bh); | |
1054 | set_buffer_dirty(bh); | |
1055 | unlock_buffer(bh); | |
1056 | ||
1057 | /* it's rare case, we can do fua all the time */ | |
1058 | return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); | |
1059 | } | |
1060 | ||
df728b0f | 1061 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
fd694733 | 1062 | struct buffer_head *bh) |
9a59b62f | 1063 | { |
fd694733 JK |
1064 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1065 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1066 | struct super_block *sb = sbi->sb; |
9a59b62f CY |
1067 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
1068 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
1069 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
1070 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
1071 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
1072 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
1073 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
1074 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
1075 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
1076 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
1077 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
1078 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
1079 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
fd694733 JK |
1080 | u64 main_end_blkaddr = main_blkaddr + |
1081 | (segment_count_main << log_blocks_per_seg); | |
1082 | u64 seg_end_blkaddr = segment0_blkaddr + | |
1083 | (segment_count << log_blocks_per_seg); | |
9a59b62f CY |
1084 | |
1085 | if (segment0_blkaddr != cp_blkaddr) { | |
1086 | f2fs_msg(sb, KERN_INFO, | |
1087 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
1088 | segment0_blkaddr, cp_blkaddr); | |
1089 | return true; | |
1090 | } | |
1091 | ||
1092 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
1093 | sit_blkaddr) { | |
1094 | f2fs_msg(sb, KERN_INFO, | |
1095 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
1096 | cp_blkaddr, sit_blkaddr, | |
1097 | segment_count_ckpt << log_blocks_per_seg); | |
1098 | return true; | |
1099 | } | |
1100 | ||
1101 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
1102 | nat_blkaddr) { | |
1103 | f2fs_msg(sb, KERN_INFO, | |
1104 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
1105 | sit_blkaddr, nat_blkaddr, | |
1106 | segment_count_sit << log_blocks_per_seg); | |
1107 | return true; | |
1108 | } | |
1109 | ||
1110 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
1111 | ssa_blkaddr) { | |
1112 | f2fs_msg(sb, KERN_INFO, | |
1113 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1114 | nat_blkaddr, ssa_blkaddr, | |
1115 | segment_count_nat << log_blocks_per_seg); | |
1116 | return true; | |
1117 | } | |
1118 | ||
1119 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1120 | main_blkaddr) { | |
1121 | f2fs_msg(sb, KERN_INFO, | |
1122 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1123 | ssa_blkaddr, main_blkaddr, | |
1124 | segment_count_ssa << log_blocks_per_seg); | |
1125 | return true; | |
1126 | } | |
1127 | ||
fd694733 | 1128 | if (main_end_blkaddr > seg_end_blkaddr) { |
9a59b62f | 1129 | f2fs_msg(sb, KERN_INFO, |
fd694733 | 1130 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
9a59b62f | 1131 | main_blkaddr, |
fd694733 JK |
1132 | segment0_blkaddr + |
1133 | (segment_count << log_blocks_per_seg), | |
9a59b62f CY |
1134 | segment_count_main << log_blocks_per_seg); |
1135 | return true; | |
fd694733 JK |
1136 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
1137 | int err = 0; | |
1138 | char *res; | |
1139 | ||
1140 | /* fix in-memory information all the time */ | |
1141 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - | |
1142 | segment0_blkaddr) >> log_blocks_per_seg); | |
1143 | ||
1144 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { | |
df728b0f | 1145 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
fd694733 JK |
1146 | res = "internally"; |
1147 | } else { | |
1148 | err = __f2fs_commit_super(bh, NULL); | |
1149 | res = err ? "failed" : "done"; | |
1150 | } | |
1151 | f2fs_msg(sb, KERN_INFO, | |
1152 | "Fix alignment : %s, start(%u) end(%u) block(%u)", | |
1153 | res, main_blkaddr, | |
1154 | segment0_blkaddr + | |
1155 | (segment_count << log_blocks_per_seg), | |
1156 | segment_count_main << log_blocks_per_seg); | |
1157 | if (err) | |
1158 | return true; | |
9a59b62f | 1159 | } |
9a59b62f CY |
1160 | return false; |
1161 | } | |
1162 | ||
df728b0f | 1163 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
fd694733 | 1164 | struct buffer_head *bh) |
aff063e2 | 1165 | { |
fd694733 JK |
1166 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1167 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1168 | struct super_block *sb = sbi->sb; |
aff063e2 JK |
1169 | unsigned int blocksize; |
1170 | ||
a07ef784 NJ |
1171 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1172 | f2fs_msg(sb, KERN_INFO, | |
1173 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1174 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1175 | return 1; |
a07ef784 | 1176 | } |
aff063e2 | 1177 | |
5c9b4692 | 1178 | /* Currently, support only 4KB page cache size */ |
09cbfeaf | 1179 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
5c9b4692 | 1180 | f2fs_msg(sb, KERN_INFO, |
14d7e9de | 1181 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
09cbfeaf | 1182 | PAGE_SIZE); |
5c9b4692 | 1183 | return 1; |
1184 | } | |
1185 | ||
aff063e2 JK |
1186 | /* Currently, support only 4KB block size */ |
1187 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1188 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1189 | f2fs_msg(sb, KERN_INFO, |
1190 | "Invalid blocksize (%u), supports only 4KB\n", | |
1191 | blocksize); | |
aff063e2 | 1192 | return 1; |
a07ef784 | 1193 | } |
5c9b4692 | 1194 | |
9a59b62f CY |
1195 | /* check log blocks per segment */ |
1196 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1197 | f2fs_msg(sb, KERN_INFO, | |
1198 | "Invalid log blocks per segment (%u)\n", | |
1199 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1200 | return 1; | |
1201 | } | |
1202 | ||
55cf9cb6 CY |
1203 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1204 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1205 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1206 | le32_to_cpu(raw_super->log_sectorsize) < | |
1207 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1208 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1209 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1210 | return 1; |
a07ef784 | 1211 | } |
55cf9cb6 CY |
1212 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1213 | le32_to_cpu(raw_super->log_sectorsize) != | |
1214 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1215 | f2fs_msg(sb, KERN_INFO, | |
1216 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1217 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1218 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1219 | return 1; |
a07ef784 | 1220 | } |
9a59b62f CY |
1221 | |
1222 | /* check reserved ino info */ | |
1223 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1224 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1225 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1226 | f2fs_msg(sb, KERN_INFO, | |
1227 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1228 | le32_to_cpu(raw_super->node_ino), | |
1229 | le32_to_cpu(raw_super->meta_ino), | |
1230 | le32_to_cpu(raw_super->root_ino)); | |
1231 | return 1; | |
1232 | } | |
1233 | ||
1234 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ | |
df728b0f | 1235 | if (sanity_check_area_boundary(sbi, bh)) |
9a59b62f CY |
1236 | return 1; |
1237 | ||
aff063e2 JK |
1238 | return 0; |
1239 | } | |
1240 | ||
984ec63c | 1241 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1242 | { |
1243 | unsigned int total, fsmeta; | |
577e3495 JK |
1244 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1245 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
1246 | |
1247 | total = le32_to_cpu(raw_super->segment_count); | |
1248 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1249 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1250 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1251 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1252 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1253 | ||
6bacf52f | 1254 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1255 | return 1; |
577e3495 | 1256 | |
1e968fdf | 1257 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1258 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1259 | return 1; | |
1260 | } | |
aff063e2 JK |
1261 | return 0; |
1262 | } | |
1263 | ||
1264 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1265 | { | |
1266 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
1267 | int i; | |
1268 | ||
1269 | sbi->log_sectors_per_block = | |
1270 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1271 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1272 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1273 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1274 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1275 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1276 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1277 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1278 | sbi->total_node_count = | |
1279 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1280 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1281 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1282 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1283 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1284 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1285 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 JK |
1286 | |
1287 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
1288 | atomic_set(&sbi->nr_pages[i], 0); | |
ab9fa662 JK |
1289 | |
1290 | sbi->dir_level = DEF_DIR_LEVEL; | |
6beceb54 | 1291 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1292 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1293 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d JK |
1294 | |
1295 | INIT_LIST_HEAD(&sbi->s_list); | |
1296 | mutex_init(&sbi->umount_mutex); | |
aff063e2 JK |
1297 | } |
1298 | ||
9076a75f GZ |
1299 | /* |
1300 | * Read f2fs raw super block. | |
2b39e907 SL |
1301 | * Because we have two copies of super block, so read both of them |
1302 | * to get the first valid one. If any one of them is broken, we pass | |
1303 | * them recovery flag back to the caller. | |
9076a75f | 1304 | */ |
df728b0f | 1305 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
9076a75f | 1306 | struct f2fs_super_block **raw_super, |
e8240f65 | 1307 | int *valid_super_block, int *recovery) |
14d7e9de | 1308 | { |
df728b0f | 1309 | struct super_block *sb = sbi->sb; |
2b39e907 | 1310 | int block; |
e8240f65 | 1311 | struct buffer_head *bh; |
fd694733 | 1312 | struct f2fs_super_block *super; |
da554e48 | 1313 | int err = 0; |
14d7e9de | 1314 | |
b39f0de2 YH |
1315 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1316 | if (!super) | |
1317 | return -ENOMEM; | |
2b39e907 SL |
1318 | |
1319 | for (block = 0; block < 2; block++) { | |
1320 | bh = sb_bread(sb, block); | |
1321 | if (!bh) { | |
1322 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", | |
9076a75f | 1323 | block + 1); |
2b39e907 SL |
1324 | err = -EIO; |
1325 | continue; | |
1326 | } | |
14d7e9de | 1327 | |
2b39e907 | 1328 | /* sanity checking of raw super */ |
df728b0f | 1329 | if (sanity_check_raw_super(sbi, bh)) { |
2b39e907 SL |
1330 | f2fs_msg(sb, KERN_ERR, |
1331 | "Can't find valid F2FS filesystem in %dth superblock", | |
1332 | block + 1); | |
1333 | err = -EINVAL; | |
1334 | brelse(bh); | |
1335 | continue; | |
1336 | } | |
14d7e9de | 1337 | |
2b39e907 | 1338 | if (!*raw_super) { |
fd694733 JK |
1339 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
1340 | sizeof(*super)); | |
2b39e907 SL |
1341 | *valid_super_block = block; |
1342 | *raw_super = super; | |
1343 | } | |
1344 | brelse(bh); | |
da554e48 | 1345 | } |
1346 | ||
2b39e907 SL |
1347 | /* Fail to read any one of the superblocks*/ |
1348 | if (err < 0) | |
1349 | *recovery = 1; | |
da554e48 | 1350 | |
da554e48 | 1351 | /* No valid superblock */ |
2b39e907 | 1352 | if (!*raw_super) |
b39f0de2 | 1353 | kfree(super); |
2b39e907 SL |
1354 | else |
1355 | err = 0; | |
da554e48 | 1356 | |
2b39e907 | 1357 | return err; |
14d7e9de | 1358 | } |
1359 | ||
fd694733 | 1360 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad | 1361 | { |
5d909cdb | 1362 | struct buffer_head *bh; |
26d815ad JK |
1363 | int err; |
1364 | ||
df728b0f JK |
1365 | if ((recover && f2fs_readonly(sbi->sb)) || |
1366 | bdev_read_only(sbi->sb->s_bdev)) { | |
1367 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
f2353d7b | 1368 | return -EROFS; |
df728b0f | 1369 | } |
f2353d7b | 1370 | |
fd694733 JK |
1371 | /* write back-up superblock first */ |
1372 | bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); | |
5d909cdb JK |
1373 | if (!bh) |
1374 | return -EIO; | |
fd694733 | 1375 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
5d909cdb | 1376 | brelse(bh); |
c5bda1c8 CY |
1377 | |
1378 | /* if we are in recovery path, skip writing valid superblock */ | |
1379 | if (recover || err) | |
5d909cdb | 1380 | return err; |
26d815ad JK |
1381 | |
1382 | /* write current valid superblock */ | |
fd694733 JK |
1383 | bh = sb_getblk(sbi->sb, sbi->valid_super_block); |
1384 | if (!bh) | |
1385 | return -EIO; | |
1386 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); | |
1387 | brelse(bh); | |
1388 | return err; | |
26d815ad JK |
1389 | } |
1390 | ||
aff063e2 JK |
1391 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1392 | { | |
1393 | struct f2fs_sb_info *sbi; | |
da554e48 | 1394 | struct f2fs_super_block *raw_super; |
aff063e2 | 1395 | struct inode *root; |
da554e48 | 1396 | long err; |
2adc3505 | 1397 | bool retry = true, need_fsck = false; |
dabc4a5c | 1398 | char *options = NULL; |
e8240f65 | 1399 | int recovery, i, valid_super_block; |
8f1dbbbb | 1400 | struct curseg_info *seg_i; |
aff063e2 | 1401 | |
ed2e621a | 1402 | try_onemore: |
da554e48 | 1403 | err = -EINVAL; |
1404 | raw_super = NULL; | |
e8240f65 | 1405 | valid_super_block = -1; |
da554e48 | 1406 | recovery = 0; |
1407 | ||
aff063e2 JK |
1408 | /* allocate memory for f2fs-specific super block info */ |
1409 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1410 | if (!sbi) | |
1411 | return -ENOMEM; | |
1412 | ||
df728b0f JK |
1413 | sbi->sb = sb; |
1414 | ||
43b6573b KM |
1415 | /* Load the checksum driver */ |
1416 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); | |
1417 | if (IS_ERR(sbi->s_chksum_driver)) { | |
1418 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); | |
1419 | err = PTR_ERR(sbi->s_chksum_driver); | |
1420 | sbi->s_chksum_driver = NULL; | |
1421 | goto free_sbi; | |
1422 | } | |
1423 | ||
ff9234ad | 1424 | /* set a block size */ |
6bacf52f | 1425 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1426 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1427 | goto free_sbi; |
a07ef784 | 1428 | } |
aff063e2 | 1429 | |
df728b0f | 1430 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
e8240f65 | 1431 | &recovery); |
9076a75f GZ |
1432 | if (err) |
1433 | goto free_sbi; | |
1434 | ||
5fb08372 | 1435 | sb->s_fs_info = sbi; |
498c5e9f | 1436 | default_options(sbi); |
aff063e2 | 1437 | /* parse mount options */ |
dabc4a5c JK |
1438 | options = kstrdup((const char *)data, GFP_KERNEL); |
1439 | if (data && !options) { | |
1440 | err = -ENOMEM; | |
aff063e2 | 1441 | goto free_sb_buf; |
dabc4a5c JK |
1442 | } |
1443 | ||
1444 | err = parse_options(sb, options); | |
1445 | if (err) | |
1446 | goto free_options; | |
aff063e2 | 1447 | |
e0afc4d6 CY |
1448 | sbi->max_file_blocks = max_file_blocks(); |
1449 | sb->s_maxbytes = sbi->max_file_blocks << | |
1450 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1451 | sb->s_max_links = F2FS_LINK_MAX; |
1452 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1453 | ||
1454 | sb->s_op = &f2fs_sops; | |
0b81d077 | 1455 | sb->s_cop = &f2fs_cryptops; |
aff063e2 JK |
1456 | sb->s_xattr = f2fs_xattr_handlers; |
1457 | sb->s_export_op = &f2fs_export_ops; | |
1458 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1459 | sb->s_time_gran = 1; |
1460 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1461 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1462 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1463 | ||
1464 | /* init f2fs-specific super block info */ | |
aff063e2 | 1465 | sbi->raw_super = raw_super; |
e8240f65 | 1466 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1467 | mutex_init(&sbi->gc_mutex); |
5463e7c1 | 1468 | mutex_init(&sbi->writepages); |
aff063e2 | 1469 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1470 | init_rwsem(&sbi->node_write); |
315df839 JK |
1471 | |
1472 | /* disallow all the data/node/meta page writes */ | |
1473 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1474 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1475 | |
df0f8dc0 | 1476 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1477 | sbi->read_io.sbi = sbi; |
1478 | sbi->read_io.bio = NULL; | |
1479 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1480 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1481 | sbi->write_io[i].sbi = sbi; |
1482 | sbi->write_io[i].bio = NULL; | |
1483 | } | |
971767ca | 1484 | |
e479556b | 1485 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1486 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1487 | init_sb_info(sbi); |
1488 | ||
1489 | /* get an inode for meta space */ | |
1490 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1491 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1492 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1493 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1494 | goto free_options; |
aff063e2 JK |
1495 | } |
1496 | ||
1497 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1498 | if (err) { |
1499 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1500 | goto free_meta_inode; |
a07ef784 | 1501 | } |
aff063e2 | 1502 | |
aff063e2 JK |
1503 | sbi->total_valid_node_count = |
1504 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
1505 | sbi->total_valid_inode_count = | |
1506 | le32_to_cpu(sbi->ckpt->valid_inode_count); | |
1507 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); | |
1508 | sbi->total_valid_block_count = | |
1509 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1510 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1511 | sbi->alloc_valid_block_count = 0; | |
c227f912 CY |
1512 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1513 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1514 | spin_lock_init(&sbi->inode_lock[i]); | |
1515 | } | |
aff063e2 | 1516 | |
1dcc336b CY |
1517 | init_extent_cache_info(sbi); |
1518 | ||
6451e041 | 1519 | init_ino_entry_info(sbi); |
aff063e2 JK |
1520 | |
1521 | /* setup f2fs internal modules */ | |
1522 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1523 | if (err) { |
1524 | f2fs_msg(sb, KERN_ERR, | |
1525 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1526 | goto free_sm; |
a07ef784 | 1527 | } |
aff063e2 | 1528 | err = build_node_manager(sbi); |
a07ef784 NJ |
1529 | if (err) { |
1530 | f2fs_msg(sb, KERN_ERR, | |
1531 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1532 | goto free_nm; |
a07ef784 | 1533 | } |
aff063e2 | 1534 | |
8f1dbbbb SL |
1535 | /* For write statistics */ |
1536 | if (sb->s_bdev->bd_part) | |
1537 | sbi->sectors_written_start = | |
1538 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1539 | ||
1540 | /* Read accumulated write IO statistics if exists */ | |
1541 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1542 | if (__exist_node_summaries(sbi)) | |
1543 | sbi->kbytes_written = | |
b2dde6fc | 1544 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
8f1dbbbb | 1545 | |
aff063e2 JK |
1546 | build_gc_manager(sbi); |
1547 | ||
1548 | /* get an inode for node space */ | |
1549 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1550 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1551 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1552 | err = PTR_ERR(sbi->node_inode); |
1553 | goto free_nm; | |
1554 | } | |
1555 | ||
2658e50d JK |
1556 | f2fs_join_shrinker(sbi); |
1557 | ||
aff063e2 | 1558 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1559 | err = recover_orphan_inodes(sbi); |
1560 | if (err) | |
1561 | goto free_node_inode; | |
aff063e2 JK |
1562 | |
1563 | /* read root inode and dentry */ | |
1564 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1565 | if (IS_ERR(root)) { | |
a07ef784 | 1566 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1567 | err = PTR_ERR(root); |
1568 | goto free_node_inode; | |
1569 | } | |
8f99a946 | 1570 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1571 | iput(root); |
8f99a946 | 1572 | err = -EINVAL; |
9d847950 | 1573 | goto free_node_inode; |
8f99a946 | 1574 | } |
aff063e2 JK |
1575 | |
1576 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1577 | if (!sb->s_root) { | |
1578 | err = -ENOMEM; | |
1579 | goto free_root_inode; | |
1580 | } | |
1581 | ||
aff063e2 JK |
1582 | err = f2fs_build_stats(sbi); |
1583 | if (err) | |
6437d1b0 | 1584 | goto free_root_inode; |
aff063e2 | 1585 | |
5e176d54 JK |
1586 | if (f2fs_proc_root) |
1587 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1588 | ||
f00d6fa7 | 1589 | if (sbi->s_proc) { |
5e176d54 JK |
1590 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, |
1591 | &f2fs_seq_segment_info_fops, sb); | |
f00d6fa7 JK |
1592 | proc_create_data("segment_bits", S_IRUGO, sbi->s_proc, |
1593 | &f2fs_seq_segment_bits_fops, sb); | |
1594 | } | |
5e176d54 | 1595 | |
b59d0bae NJ |
1596 | sbi->s_kobj.kset = f2fs_kset; |
1597 | init_completion(&sbi->s_kobj_unregister); | |
1598 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1599 | "%s", sb->s_id); | |
1600 | if (err) | |
6437d1b0 | 1601 | goto free_proc; |
b59d0bae | 1602 | |
6437d1b0 JK |
1603 | /* recover fsynced data */ |
1604 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1605 | /* |
1606 | * mount should be failed, when device has readonly mode, and | |
1607 | * previous checkpoint was not done by clean system shutdown. | |
1608 | */ | |
1609 | if (bdev_read_only(sb->s_bdev) && | |
1610 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { | |
1611 | err = -EROFS; | |
1612 | goto free_kobj; | |
1613 | } | |
2adc3505 CY |
1614 | |
1615 | if (need_fsck) | |
1616 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1617 | ||
6781eabb JK |
1618 | err = recover_fsync_data(sbi, false); |
1619 | if (err < 0) { | |
2adc3505 | 1620 | need_fsck = true; |
6437d1b0 JK |
1621 | f2fs_msg(sb, KERN_ERR, |
1622 | "Cannot recover all fsync data errno=%ld", err); | |
ed2e621a JK |
1623 | goto free_kobj; |
1624 | } | |
6781eabb JK |
1625 | } else { |
1626 | err = recover_fsync_data(sbi, true); | |
1627 | ||
1628 | if (!f2fs_readonly(sb) && err > 0) { | |
1629 | err = -EINVAL; | |
1630 | f2fs_msg(sb, KERN_ERR, | |
1631 | "Need to recover fsync data"); | |
1632 | goto free_kobj; | |
1633 | } | |
6437d1b0 | 1634 | } |
6781eabb | 1635 | |
315df839 JK |
1636 | /* recover_fsync_data() cleared this already */ |
1637 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1638 | |
6437d1b0 JK |
1639 | /* |
1640 | * If filesystem is not mounted as read-only then | |
1641 | * do start the gc_thread. | |
1642 | */ | |
6c029932 | 1643 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1644 | /* After POR, we can run background GC thread.*/ |
1645 | err = start_gc_thread(sbi); | |
1646 | if (err) | |
1647 | goto free_kobj; | |
1648 | } | |
dabc4a5c | 1649 | kfree(options); |
da554e48 | 1650 | |
1651 | /* recover broken superblock */ | |
f2353d7b | 1652 | if (recovery) { |
41214b3c CY |
1653 | err = f2fs_commit_super(sbi, true); |
1654 | f2fs_msg(sb, KERN_INFO, | |
1655 | "Try to recover %dth superblock, ret: %ld", | |
1656 | sbi->valid_super_block ? 1 : 2, err); | |
da554e48 | 1657 | } |
1658 | ||
6beceb54 | 1659 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1660 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1661 | return 0; |
6437d1b0 JK |
1662 | |
1663 | free_kobj: | |
1664 | kobject_del(&sbi->s_kobj); | |
29ba108d CY |
1665 | kobject_put(&sbi->s_kobj); |
1666 | wait_for_completion(&sbi->s_kobj_unregister); | |
6437d1b0 | 1667 | free_proc: |
1d15bd20 CY |
1668 | if (sbi->s_proc) { |
1669 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 1670 | remove_proc_entry("segment_bits", sbi->s_proc); |
1d15bd20 CY |
1671 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
1672 | } | |
1673 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1674 | free_root_inode: |
1675 | dput(sb->s_root); | |
1676 | sb->s_root = NULL; | |
1677 | free_node_inode: | |
2658e50d JK |
1678 | mutex_lock(&sbi->umount_mutex); |
1679 | f2fs_leave_shrinker(sbi); | |
aff063e2 | 1680 | iput(sbi->node_inode); |
2658e50d | 1681 | mutex_unlock(&sbi->umount_mutex); |
aff063e2 JK |
1682 | free_nm: |
1683 | destroy_node_manager(sbi); | |
1684 | free_sm: | |
1685 | destroy_segment_manager(sbi); | |
aff063e2 JK |
1686 | kfree(sbi->ckpt); |
1687 | free_meta_inode: | |
1688 | make_bad_inode(sbi->meta_inode); | |
1689 | iput(sbi->meta_inode); | |
dabc4a5c JK |
1690 | free_options: |
1691 | kfree(options); | |
aff063e2 | 1692 | free_sb_buf: |
b39f0de2 | 1693 | kfree(raw_super); |
aff063e2 | 1694 | free_sbi: |
43b6573b KM |
1695 | if (sbi->s_chksum_driver) |
1696 | crypto_free_shash(sbi->s_chksum_driver); | |
aff063e2 | 1697 | kfree(sbi); |
ed2e621a JK |
1698 | |
1699 | /* give only one another chance */ | |
1700 | if (retry) { | |
9df47ba7 | 1701 | retry = false; |
ed2e621a JK |
1702 | shrink_dcache_sb(sb); |
1703 | goto try_onemore; | |
1704 | } | |
aff063e2 JK |
1705 | return err; |
1706 | } | |
1707 | ||
1708 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1709 | const char *dev_name, void *data) | |
1710 | { | |
1711 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1712 | } | |
1713 | ||
30a5537f JK |
1714 | static void kill_f2fs_super(struct super_block *sb) |
1715 | { | |
1716 | if (sb->s_root) | |
caf0047e | 1717 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1718 | kill_block_super(sb); |
1719 | } | |
1720 | ||
aff063e2 JK |
1721 | static struct file_system_type f2fs_fs_type = { |
1722 | .owner = THIS_MODULE, | |
1723 | .name = "f2fs", | |
1724 | .mount = f2fs_mount, | |
30a5537f | 1725 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1726 | .fs_flags = FS_REQUIRES_DEV, |
1727 | }; | |
7f78e035 | 1728 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1729 | |
6e6093a8 | 1730 | static int __init init_inodecache(void) |
aff063e2 | 1731 | { |
5d097056 VD |
1732 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1733 | sizeof(struct f2fs_inode_info), 0, | |
1734 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1735 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1736 | return -ENOMEM; |
1737 | return 0; | |
1738 | } | |
1739 | ||
1740 | static void destroy_inodecache(void) | |
1741 | { | |
1742 | /* | |
1743 | * Make sure all delayed rcu free inodes are flushed before we | |
1744 | * destroy cache. | |
1745 | */ | |
1746 | rcu_barrier(); | |
1747 | kmem_cache_destroy(f2fs_inode_cachep); | |
1748 | } | |
1749 | ||
1750 | static int __init init_f2fs_fs(void) | |
1751 | { | |
1752 | int err; | |
1753 | ||
c0508650 JK |
1754 | f2fs_build_trace_ios(); |
1755 | ||
aff063e2 JK |
1756 | err = init_inodecache(); |
1757 | if (err) | |
1758 | goto fail; | |
1759 | err = create_node_manager_caches(); | |
1760 | if (err) | |
9890ff3f | 1761 | goto free_inodecache; |
7fd9e544 | 1762 | err = create_segment_manager_caches(); |
aff063e2 | 1763 | if (err) |
9890ff3f | 1764 | goto free_node_manager_caches; |
aff063e2 JK |
1765 | err = create_checkpoint_caches(); |
1766 | if (err) | |
06292073 | 1767 | goto free_segment_manager_caches; |
1dcc336b CY |
1768 | err = create_extent_cache(); |
1769 | if (err) | |
1770 | goto free_checkpoint_caches; | |
b59d0bae | 1771 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1772 | if (!f2fs_kset) { |
1773 | err = -ENOMEM; | |
1dcc336b | 1774 | goto free_extent_cache; |
6e6b978c | 1775 | } |
2658e50d | 1776 | err = register_shrinker(&f2fs_shrinker_info); |
cfc4d971 | 1777 | if (err) |
0b81d077 | 1778 | goto free_kset; |
2658e50d JK |
1779 | |
1780 | err = register_filesystem(&f2fs_fs_type); | |
1781 | if (err) | |
1782 | goto free_shrinker; | |
787c7b8c CY |
1783 | err = f2fs_create_root_stats(); |
1784 | if (err) | |
1785 | goto free_filesystem; | |
5e176d54 | 1786 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
1787 | return 0; |
1788 | ||
787c7b8c CY |
1789 | free_filesystem: |
1790 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
1791 | free_shrinker: |
1792 | unregister_shrinker(&f2fs_shrinker_info); | |
9890ff3f ZH |
1793 | free_kset: |
1794 | kset_unregister(f2fs_kset); | |
1dcc336b CY |
1795 | free_extent_cache: |
1796 | destroy_extent_cache(); | |
9890ff3f ZH |
1797 | free_checkpoint_caches: |
1798 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
1799 | free_segment_manager_caches: |
1800 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
1801 | free_node_manager_caches: |
1802 | destroy_node_manager_caches(); | |
1803 | free_inodecache: | |
1804 | destroy_inodecache(); | |
aff063e2 JK |
1805 | fail: |
1806 | return err; | |
1807 | } | |
1808 | ||
1809 | static void __exit exit_f2fs_fs(void) | |
1810 | { | |
5e176d54 | 1811 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 1812 | f2fs_destroy_root_stats(); |
2658e50d | 1813 | unregister_shrinker(&f2fs_shrinker_info); |
aff063e2 | 1814 | unregister_filesystem(&f2fs_fs_type); |
fdf6c8be | 1815 | destroy_extent_cache(); |
aff063e2 | 1816 | destroy_checkpoint_caches(); |
5dcd8a71 | 1817 | destroy_segment_manager_caches(); |
aff063e2 JK |
1818 | destroy_node_manager_caches(); |
1819 | destroy_inodecache(); | |
b59d0bae | 1820 | kset_unregister(f2fs_kset); |
351f4fba | 1821 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
1822 | } |
1823 | ||
1824 | module_init(init_f2fs_fs) | |
1825 | module_exit(exit_f2fs_fs) | |
1826 | ||
1827 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
1828 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
1829 | MODULE_LICENSE("GPL"); |