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 | 41 | |
73faec4d JK |
42 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
43 | u32 f2fs_fault_rate = 0; | |
2c63fead JK |
44 | atomic_t f2fs_ops; |
45 | ||
46 | char *fault_name[FAULT_MAX] = { | |
47 | [FAULT_KMALLOC] = "kmalloc", | |
c41f3cc3 | 48 | [FAULT_PAGE_ALLOC] = "page alloc", |
cb78942b JK |
49 | [FAULT_ALLOC_NID] = "alloc nid", |
50 | [FAULT_ORPHAN] = "orphan", | |
51 | [FAULT_BLOCK] = "no more block", | |
52 | [FAULT_DIR_DEPTH] = "too big dir depth", | |
2c63fead | 53 | }; |
73faec4d JK |
54 | #endif |
55 | ||
2658e50d JK |
56 | /* f2fs-wide shrinker description */ |
57 | static struct shrinker f2fs_shrinker_info = { | |
58 | .scan_objects = f2fs_shrink_scan, | |
59 | .count_objects = f2fs_shrink_count, | |
60 | .seeks = DEFAULT_SEEKS, | |
61 | }; | |
62 | ||
aff063e2 | 63 | enum { |
696c018c | 64 | Opt_gc_background, |
aff063e2 | 65 | Opt_disable_roll_forward, |
2d834bf9 | 66 | Opt_norecovery, |
aff063e2 JK |
67 | Opt_discard, |
68 | Opt_noheap, | |
4058c511 | 69 | Opt_user_xattr, |
aff063e2 | 70 | Opt_nouser_xattr, |
4058c511 | 71 | Opt_acl, |
aff063e2 JK |
72 | Opt_noacl, |
73 | Opt_active_logs, | |
74 | Opt_disable_ext_identify, | |
444c580f | 75 | Opt_inline_xattr, |
8274de77 | 76 | Opt_inline_data, |
5efd3c6f | 77 | Opt_inline_dentry, |
6b4afdd7 | 78 | Opt_flush_merge, |
0f7b2abd | 79 | Opt_nobarrier, |
d5053a34 | 80 | Opt_fastboot, |
89672159 | 81 | Opt_extent_cache, |
7daaea25 | 82 | Opt_noextent_cache, |
75342797 | 83 | Opt_noinline_data, |
343f40f0 | 84 | Opt_data_flush, |
73faec4d | 85 | Opt_fault_injection, |
aff063e2 JK |
86 | Opt_err, |
87 | }; | |
88 | ||
89 | static match_table_t f2fs_tokens = { | |
696c018c | 90 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 91 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 92 | {Opt_norecovery, "norecovery"}, |
aff063e2 JK |
93 | {Opt_discard, "discard"}, |
94 | {Opt_noheap, "no_heap"}, | |
4058c511 | 95 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 96 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 97 | {Opt_acl, "acl"}, |
aff063e2 JK |
98 | {Opt_noacl, "noacl"}, |
99 | {Opt_active_logs, "active_logs=%u"}, | |
100 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 101 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 102 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 103 | {Opt_inline_dentry, "inline_dentry"}, |
6b4afdd7 | 104 | {Opt_flush_merge, "flush_merge"}, |
0f7b2abd | 105 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 106 | {Opt_fastboot, "fastboot"}, |
89672159 | 107 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 108 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 109 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 110 | {Opt_data_flush, "data_flush"}, |
73faec4d | 111 | {Opt_fault_injection, "fault_injection=%u"}, |
aff063e2 JK |
112 | {Opt_err, NULL}, |
113 | }; | |
114 | ||
b59d0bae | 115 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
116 | enum { |
117 | GC_THREAD, /* struct f2fs_gc_thread */ | |
118 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 119 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 120 | F2FS_SBI, /* struct f2fs_sb_info */ |
ea91e9b0 JK |
121 | }; |
122 | ||
b59d0bae NJ |
123 | struct f2fs_attr { |
124 | struct attribute attr; | |
125 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
126 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
127 | const char *, size_t); | |
ea91e9b0 | 128 | int struct_type; |
b59d0bae NJ |
129 | int offset; |
130 | }; | |
131 | ||
ea91e9b0 JK |
132 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
133 | { | |
134 | if (struct_type == GC_THREAD) | |
135 | return (unsigned char *)sbi->gc_thread; | |
136 | else if (struct_type == SM_INFO) | |
137 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
138 | else if (struct_type == NM_INFO) |
139 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
140 | else if (struct_type == F2FS_SBI) |
141 | return (unsigned char *)sbi; | |
ea91e9b0 JK |
142 | return NULL; |
143 | } | |
144 | ||
8f1dbbbb SL |
145 | static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
146 | struct f2fs_sb_info *sbi, char *buf) | |
147 | { | |
148 | struct super_block *sb = sbi->sb; | |
149 | ||
150 | if (!sb->s_bdev->bd_part) | |
151 | return snprintf(buf, PAGE_SIZE, "0\n"); | |
152 | ||
153 | return snprintf(buf, PAGE_SIZE, "%llu\n", | |
154 | (unsigned long long)(sbi->kbytes_written + | |
155 | BD_PART_WRITTEN(sbi))); | |
156 | } | |
157 | ||
b59d0bae NJ |
158 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
159 | struct f2fs_sb_info *sbi, char *buf) | |
160 | { | |
ea91e9b0 | 161 | unsigned char *ptr = NULL; |
b59d0bae NJ |
162 | unsigned int *ui; |
163 | ||
ea91e9b0 JK |
164 | ptr = __struct_ptr(sbi, a->struct_type); |
165 | if (!ptr) | |
b59d0bae NJ |
166 | return -EINVAL; |
167 | ||
ea91e9b0 | 168 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
169 | |
170 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
171 | } | |
172 | ||
173 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
174 | struct f2fs_sb_info *sbi, | |
175 | const char *buf, size_t count) | |
176 | { | |
ea91e9b0 | 177 | unsigned char *ptr; |
b59d0bae NJ |
178 | unsigned long t; |
179 | unsigned int *ui; | |
180 | ssize_t ret; | |
181 | ||
ea91e9b0 JK |
182 | ptr = __struct_ptr(sbi, a->struct_type); |
183 | if (!ptr) | |
b59d0bae NJ |
184 | return -EINVAL; |
185 | ||
ea91e9b0 | 186 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
187 | |
188 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
189 | if (ret < 0) | |
190 | return ret; | |
191 | *ui = t; | |
192 | return count; | |
193 | } | |
194 | ||
195 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
196 | struct attribute *attr, char *buf) | |
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->show ? a->show(a, sbi, buf) : 0; | |
203 | } | |
204 | ||
205 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
206 | const char *buf, size_t len) | |
207 | { | |
208 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
209 | s_kobj); | |
210 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
211 | ||
212 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
213 | } | |
214 | ||
215 | static void f2fs_sb_release(struct kobject *kobj) | |
216 | { | |
217 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
218 | s_kobj); | |
219 | complete(&sbi->s_kobj_unregister); | |
220 | } | |
221 | ||
ea91e9b0 | 222 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
223 | static struct f2fs_attr f2fs_attr_##_name = { \ |
224 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
225 | .show = _show, \ | |
226 | .store = _store, \ | |
ea91e9b0 JK |
227 | .struct_type = _struct_type, \ |
228 | .offset = _offset \ | |
b59d0bae NJ |
229 | } |
230 | ||
ea91e9b0 JK |
231 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
232 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
233 | f2fs_sbi_show, f2fs_sbi_store, \ | |
234 | offsetof(struct struct_name, elname)) | |
b59d0bae | 235 | |
8f1dbbbb SL |
236 | #define F2FS_GENERAL_RO_ATTR(name) \ |
237 | static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) | |
238 | ||
ea91e9b0 JK |
239 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
240 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
241 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
242 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
243 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 244 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 245 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
246 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
247 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 248 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 249 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
ea1a29a0 | 250 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
2304cb0c | 251 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
b1c57c1c | 252 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 253 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
6beceb54 | 254 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
d0239e1b | 255 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
8f1dbbbb | 256 | F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
b59d0bae NJ |
257 | |
258 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
259 | static struct attribute *f2fs_attrs[] = { | |
260 | ATTR_LIST(gc_min_sleep_time), | |
261 | ATTR_LIST(gc_max_sleep_time), | |
262 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 263 | ATTR_LIST(gc_idle), |
ea91e9b0 | 264 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 265 | ATTR_LIST(max_small_discards), |
bba681cb | 266 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
267 | ATTR_LIST(ipu_policy), |
268 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 269 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 270 | ATTR_LIST(max_victim_search), |
ab9fa662 | 271 | ATTR_LIST(dir_level), |
cdfc41c1 | 272 | ATTR_LIST(ram_thresh), |
ea1a29a0 | 273 | ATTR_LIST(ra_nid_pages), |
2304cb0c | 274 | ATTR_LIST(dirty_nats_ratio), |
60b99b48 | 275 | ATTR_LIST(cp_interval), |
d0239e1b | 276 | ATTR_LIST(idle_interval), |
8f1dbbbb | 277 | ATTR_LIST(lifetime_write_kbytes), |
b59d0bae NJ |
278 | NULL, |
279 | }; | |
280 | ||
281 | static const struct sysfs_ops f2fs_attr_ops = { | |
282 | .show = f2fs_attr_show, | |
283 | .store = f2fs_attr_store, | |
284 | }; | |
285 | ||
286 | static struct kobj_type f2fs_ktype = { | |
287 | .default_attrs = f2fs_attrs, | |
288 | .sysfs_ops = &f2fs_attr_ops, | |
289 | .release = f2fs_sb_release, | |
290 | }; | |
291 | ||
a07ef784 NJ |
292 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
293 | { | |
294 | struct va_format vaf; | |
295 | va_list args; | |
296 | ||
297 | va_start(args, fmt); | |
298 | vaf.fmt = fmt; | |
299 | vaf.va = &args; | |
300 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
301 | va_end(args); | |
302 | } | |
303 | ||
aff063e2 JK |
304 | static void init_once(void *foo) |
305 | { | |
306 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
307 | ||
aff063e2 JK |
308 | inode_init_once(&fi->vfs_inode); |
309 | } | |
310 | ||
696c018c NJ |
311 | static int parse_options(struct super_block *sb, char *options) |
312 | { | |
313 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 314 | struct request_queue *q; |
696c018c NJ |
315 | substring_t args[MAX_OPT_ARGS]; |
316 | char *p, *name; | |
317 | int arg = 0; | |
318 | ||
73faec4d JK |
319 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
320 | f2fs_fault_rate = 0; | |
321 | #endif | |
696c018c NJ |
322 | if (!options) |
323 | return 0; | |
324 | ||
325 | while ((p = strsep(&options, ",")) != NULL) { | |
326 | int token; | |
327 | if (!*p) | |
328 | continue; | |
329 | /* | |
330 | * Initialize args struct so we know whether arg was | |
331 | * found; some options take optional arguments. | |
332 | */ | |
333 | args[0].to = args[0].from = NULL; | |
334 | token = match_token(p, f2fs_tokens, args); | |
335 | ||
336 | switch (token) { | |
337 | case Opt_gc_background: | |
338 | name = match_strdup(&args[0]); | |
339 | ||
340 | if (!name) | |
341 | return -ENOMEM; | |
6aefd93b | 342 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 343 | set_opt(sbi, BG_GC); |
6aefd93b JK |
344 | clear_opt(sbi, FORCE_FG_GC); |
345 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 346 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
347 | clear_opt(sbi, FORCE_FG_GC); |
348 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
349 | set_opt(sbi, BG_GC); | |
350 | set_opt(sbi, FORCE_FG_GC); | |
351 | } else { | |
696c018c NJ |
352 | kfree(name); |
353 | return -EINVAL; | |
354 | } | |
355 | kfree(name); | |
356 | break; | |
357 | case Opt_disable_roll_forward: | |
358 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
359 | break; | |
2d834bf9 JK |
360 | case Opt_norecovery: |
361 | /* this option mounts f2fs with ro */ | |
362 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
363 | if (!f2fs_readonly(sb)) | |
364 | return -EINVAL; | |
365 | break; | |
696c018c | 366 | case Opt_discard: |
09d54cdd CY |
367 | q = bdev_get_queue(sb->s_bdev); |
368 | if (blk_queue_discard(q)) { | |
369 | set_opt(sbi, DISCARD); | |
370 | } else { | |
371 | f2fs_msg(sb, KERN_WARNING, | |
372 | "mounting with \"discard\" option, but " | |
373 | "the device does not support discard"); | |
374 | } | |
696c018c NJ |
375 | break; |
376 | case Opt_noheap: | |
377 | set_opt(sbi, NOHEAP); | |
378 | break; | |
379 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
380 | case Opt_user_xattr: |
381 | set_opt(sbi, XATTR_USER); | |
382 | break; | |
696c018c NJ |
383 | case Opt_nouser_xattr: |
384 | clear_opt(sbi, XATTR_USER); | |
385 | break; | |
444c580f JK |
386 | case Opt_inline_xattr: |
387 | set_opt(sbi, INLINE_XATTR); | |
388 | break; | |
696c018c | 389 | #else |
4058c511 KA |
390 | case Opt_user_xattr: |
391 | f2fs_msg(sb, KERN_INFO, | |
392 | "user_xattr options not supported"); | |
393 | break; | |
696c018c NJ |
394 | case Opt_nouser_xattr: |
395 | f2fs_msg(sb, KERN_INFO, | |
396 | "nouser_xattr options not supported"); | |
397 | break; | |
444c580f JK |
398 | case Opt_inline_xattr: |
399 | f2fs_msg(sb, KERN_INFO, | |
400 | "inline_xattr options not supported"); | |
401 | break; | |
696c018c NJ |
402 | #endif |
403 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
404 | case Opt_acl: |
405 | set_opt(sbi, POSIX_ACL); | |
406 | break; | |
696c018c NJ |
407 | case Opt_noacl: |
408 | clear_opt(sbi, POSIX_ACL); | |
409 | break; | |
410 | #else | |
4058c511 KA |
411 | case Opt_acl: |
412 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
413 | break; | |
696c018c NJ |
414 | case Opt_noacl: |
415 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
416 | break; | |
417 | #endif | |
418 | case Opt_active_logs: | |
419 | if (args->from && match_int(args, &arg)) | |
420 | return -EINVAL; | |
421 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
422 | return -EINVAL; | |
423 | sbi->active_logs = arg; | |
424 | break; | |
425 | case Opt_disable_ext_identify: | |
426 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
427 | break; | |
8274de77 HL |
428 | case Opt_inline_data: |
429 | set_opt(sbi, INLINE_DATA); | |
430 | break; | |
5efd3c6f CY |
431 | case Opt_inline_dentry: |
432 | set_opt(sbi, INLINE_DENTRY); | |
433 | break; | |
6b4afdd7 JK |
434 | case Opt_flush_merge: |
435 | set_opt(sbi, FLUSH_MERGE); | |
436 | break; | |
0f7b2abd JK |
437 | case Opt_nobarrier: |
438 | set_opt(sbi, NOBARRIER); | |
439 | break; | |
d5053a34 JK |
440 | case Opt_fastboot: |
441 | set_opt(sbi, FASTBOOT); | |
442 | break; | |
89672159 CY |
443 | case Opt_extent_cache: |
444 | set_opt(sbi, EXTENT_CACHE); | |
445 | break; | |
7daaea25 JK |
446 | case Opt_noextent_cache: |
447 | clear_opt(sbi, EXTENT_CACHE); | |
448 | break; | |
75342797 WL |
449 | case Opt_noinline_data: |
450 | clear_opt(sbi, INLINE_DATA); | |
451 | break; | |
343f40f0 CY |
452 | case Opt_data_flush: |
453 | set_opt(sbi, DATA_FLUSH); | |
454 | break; | |
73faec4d JK |
455 | case Opt_fault_injection: |
456 | if (args->from && match_int(args, &arg)) | |
457 | return -EINVAL; | |
458 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
459 | f2fs_fault_rate = arg; | |
2c63fead | 460 | atomic_set(&f2fs_ops, 0); |
73faec4d JK |
461 | #else |
462 | f2fs_msg(sb, KERN_INFO, | |
463 | "FAULT_INJECTION was not selected"); | |
464 | #endif | |
465 | break; | |
696c018c NJ |
466 | default: |
467 | f2fs_msg(sb, KERN_ERR, | |
468 | "Unrecognized mount option \"%s\" or missing value", | |
469 | p); | |
470 | return -EINVAL; | |
471 | } | |
472 | } | |
473 | return 0; | |
474 | } | |
475 | ||
aff063e2 JK |
476 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
477 | { | |
478 | struct f2fs_inode_info *fi; | |
479 | ||
a0acdfe0 | 480 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
481 | if (!fi) |
482 | return NULL; | |
483 | ||
484 | init_once((void *) fi); | |
485 | ||
434720fa | 486 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 487 | fi->vfs_inode.i_version = 1; |
a7ffdbe2 | 488 | atomic_set(&fi->dirty_pages, 0); |
aff063e2 JK |
489 | fi->i_current_depth = 1; |
490 | fi->i_advise = 0; | |
d928bfbf | 491 | init_rwsem(&fi->i_sem); |
2710fd7e | 492 | INIT_LIST_HEAD(&fi->dirty_list); |
88b88a66 JK |
493 | INIT_LIST_HEAD(&fi->inmem_pages); |
494 | mutex_init(&fi->inmem_lock); | |
aff063e2 JK |
495 | |
496 | set_inode_flag(fi, FI_NEW_INODE); | |
497 | ||
444c580f JK |
498 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
499 | set_inode_flag(fi, FI_INLINE_XATTR); | |
500 | ||
ab9fa662 JK |
501 | /* Will be used by directory only */ |
502 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
aff063e2 JK |
503 | return &fi->vfs_inode; |
504 | } | |
505 | ||
531ad7d5 JK |
506 | static int f2fs_drop_inode(struct inode *inode) |
507 | { | |
508 | /* | |
509 | * This is to avoid a deadlock condition like below. | |
510 | * writeback_single_inode(inode) | |
511 | * - f2fs_write_data_page | |
512 | * - f2fs_gc -> iput -> evict | |
513 | * - inode_wait_for_writeback(inode) | |
514 | */ | |
06e1bc05 JK |
515 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
516 | if (!inode->i_nlink && !is_bad_inode(inode)) { | |
3e72f721 JK |
517 | /* to avoid evict_inode call simultaneously */ |
518 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
519 | spin_unlock(&inode->i_lock); |
520 | ||
521 | /* some remained atomic pages should discarded */ | |
522 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 523 | drop_inmem_pages(inode); |
06e1bc05 | 524 | |
3e72f721 JK |
525 | /* should remain fi->extent_tree for writepage */ |
526 | f2fs_destroy_extent_node(inode); | |
527 | ||
06e1bc05 JK |
528 | sb_start_intwrite(inode->i_sb); |
529 | i_size_write(inode, 0); | |
530 | ||
531 | if (F2FS_HAS_BLOCKS(inode)) | |
55f57d2c | 532 | f2fs_truncate(inode, true); |
06e1bc05 JK |
533 | |
534 | sb_end_intwrite(inode->i_sb); | |
535 | ||
0b81d077 | 536 | fscrypt_put_encryption_info(inode, NULL); |
06e1bc05 | 537 | spin_lock(&inode->i_lock); |
3e72f721 | 538 | atomic_dec(&inode->i_count); |
06e1bc05 | 539 | } |
531ad7d5 | 540 | return 0; |
06e1bc05 | 541 | } |
531ad7d5 JK |
542 | return generic_drop_inode(inode); |
543 | } | |
544 | ||
b3783873 JK |
545 | /* |
546 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
547 | * | |
548 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
549 | */ | |
550 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
551 | { | |
552 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); | |
b3783873 JK |
553 | } |
554 | ||
aff063e2 JK |
555 | static void f2fs_i_callback(struct rcu_head *head) |
556 | { | |
557 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
558 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
559 | } | |
560 | ||
25ca923b | 561 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 JK |
562 | { |
563 | call_rcu(&inode->i_rcu, f2fs_i_callback); | |
564 | } | |
565 | ||
566 | static void f2fs_put_super(struct super_block *sb) | |
567 | { | |
568 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
569 | ||
5e176d54 JK |
570 | if (sbi->s_proc) { |
571 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 572 | remove_proc_entry("segment_bits", sbi->s_proc); |
5e176d54 JK |
573 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
574 | } | |
b59d0bae | 575 | kobject_del(&sbi->s_kobj); |
5e176d54 | 576 | |
aff063e2 JK |
577 | stop_gc_thread(sbi); |
578 | ||
2658e50d JK |
579 | /* prevent remaining shrinker jobs */ |
580 | mutex_lock(&sbi->umount_mutex); | |
581 | ||
85dc2f2c JK |
582 | /* |
583 | * We don't need to do checkpoint when superblock is clean. | |
584 | * But, the previous checkpoint was not done by umount, it needs to do | |
585 | * clean checkpoint again. | |
586 | */ | |
caf0047e | 587 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
85dc2f2c | 588 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
589 | struct cp_control cpc = { |
590 | .reason = CP_UMOUNT, | |
591 | }; | |
592 | write_checkpoint(sbi, &cpc); | |
593 | } | |
aff063e2 | 594 | |
eca616f8 JK |
595 | /* write_checkpoint can update stat informaion */ |
596 | f2fs_destroy_stats(sbi); | |
597 | ||
cf779cab JK |
598 | /* |
599 | * normally superblock is clean, so we need to release this. | |
600 | * In addition, EIO will skip do checkpoint, we need this as well. | |
601 | */ | |
74ef9241 | 602 | release_ino_entry(sbi, true); |
4b2fecc8 | 603 | release_discard_addrs(sbi); |
6f12ac25 | 604 | |
2658e50d JK |
605 | f2fs_leave_shrinker(sbi); |
606 | mutex_unlock(&sbi->umount_mutex); | |
607 | ||
17c19120 | 608 | /* our cp_error case, we can wait for any writeback page */ |
406657dd CY |
609 | if (get_pages(sbi, F2FS_WRITEBACK)) |
610 | f2fs_flush_merged_bios(sbi); | |
17c19120 | 611 | |
aff063e2 JK |
612 | iput(sbi->node_inode); |
613 | iput(sbi->meta_inode); | |
614 | ||
615 | /* destroy f2fs internal modules */ | |
616 | destroy_node_manager(sbi); | |
617 | destroy_segment_manager(sbi); | |
618 | ||
619 | kfree(sbi->ckpt); | |
b59d0bae NJ |
620 | kobject_put(&sbi->s_kobj); |
621 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
622 | |
623 | sb->s_fs_info = NULL; | |
43b6573b KM |
624 | if (sbi->s_chksum_driver) |
625 | crypto_free_shash(sbi->s_chksum_driver); | |
b39f0de2 | 626 | kfree(sbi->raw_super); |
aff063e2 JK |
627 | kfree(sbi); |
628 | } | |
629 | ||
630 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
631 | { | |
632 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 633 | int err = 0; |
aff063e2 | 634 | |
a2a4a7e4 NJ |
635 | trace_f2fs_sync_fs(sb, sync); |
636 | ||
b7473754 | 637 | if (sync) { |
d5053a34 JK |
638 | struct cp_control cpc; |
639 | ||
119ee914 JK |
640 | cpc.reason = __get_cp_reason(sbi); |
641 | ||
b7473754 | 642 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 643 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 644 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 645 | } |
05ca3632 | 646 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 647 | |
c34f42e2 | 648 | return err; |
aff063e2 JK |
649 | } |
650 | ||
d6212a5f CL |
651 | static int f2fs_freeze(struct super_block *sb) |
652 | { | |
653 | int err; | |
654 | ||
77888c1e | 655 | if (f2fs_readonly(sb)) |
d6212a5f CL |
656 | return 0; |
657 | ||
658 | err = f2fs_sync_fs(sb, 1); | |
659 | return err; | |
660 | } | |
661 | ||
662 | static int f2fs_unfreeze(struct super_block *sb) | |
663 | { | |
664 | return 0; | |
665 | } | |
666 | ||
aff063e2 JK |
667 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
668 | { | |
669 | struct super_block *sb = dentry->d_sb; | |
670 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
671 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
672 | block_t total_count, user_block_count, start_count, ovp_count; | |
673 | ||
674 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
675 | user_block_count = sbi->user_block_count; | |
676 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
677 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
678 | buf->f_type = F2FS_SUPER_MAGIC; | |
679 | buf->f_bsize = sbi->blocksize; | |
680 | ||
681 | buf->f_blocks = total_count - start_count; | |
682 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; | |
683 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); | |
684 | ||
c200b1aa CY |
685 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
686 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 687 | |
5a20d339 | 688 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
689 | buf->f_fsid.val[0] = (u32)id; |
690 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
691 | ||
692 | return 0; | |
693 | } | |
694 | ||
695 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
696 | { | |
697 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
698 | ||
6aefd93b JK |
699 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
700 | if (test_opt(sbi, FORCE_FG_GC)) | |
701 | seq_printf(seq, ",background_gc=%s", "sync"); | |
702 | else | |
703 | seq_printf(seq, ",background_gc=%s", "on"); | |
704 | } else { | |
696c018c | 705 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 706 | } |
aff063e2 JK |
707 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
708 | seq_puts(seq, ",disable_roll_forward"); | |
709 | if (test_opt(sbi, DISCARD)) | |
710 | seq_puts(seq, ",discard"); | |
711 | if (test_opt(sbi, NOHEAP)) | |
712 | seq_puts(seq, ",no_heap_alloc"); | |
713 | #ifdef CONFIG_F2FS_FS_XATTR | |
714 | if (test_opt(sbi, XATTR_USER)) | |
715 | seq_puts(seq, ",user_xattr"); | |
716 | else | |
717 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
718 | if (test_opt(sbi, INLINE_XATTR)) |
719 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
720 | #endif |
721 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
722 | if (test_opt(sbi, POSIX_ACL)) | |
723 | seq_puts(seq, ",acl"); | |
724 | else | |
725 | seq_puts(seq, ",noacl"); | |
726 | #endif | |
727 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 728 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
729 | if (test_opt(sbi, INLINE_DATA)) |
730 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
731 | else |
732 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
733 | if (test_opt(sbi, INLINE_DENTRY)) |
734 | seq_puts(seq, ",inline_dentry"); | |
b270ad6f | 735 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 736 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
737 | if (test_opt(sbi, NOBARRIER)) |
738 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
739 | if (test_opt(sbi, FASTBOOT)) |
740 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
741 | if (test_opt(sbi, EXTENT_CACHE)) |
742 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
743 | else |
744 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
745 | if (test_opt(sbi, DATA_FLUSH)) |
746 | seq_puts(seq, ",data_flush"); | |
aff063e2 JK |
747 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
748 | ||
749 | return 0; | |
750 | } | |
751 | ||
5e176d54 JK |
752 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
753 | { | |
754 | struct super_block *sb = seq->private; | |
755 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
756 | unsigned int total_segs = |
757 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
758 | int i; |
759 | ||
90aa6dc9 CY |
760 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
761 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
762 | ||
5e176d54 | 763 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
764 | struct seg_entry *se = get_seg_entry(sbi, i); |
765 | ||
766 | if ((i % 10) == 0) | |
01a5ad82 | 767 | seq_printf(seq, "%-10d", i); |
90aa6dc9 CY |
768 | seq_printf(seq, "%d|%-3u", se->type, |
769 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
770 | if ((i % 10) == 9 || i == (total_segs - 1)) |
771 | seq_putc(seq, '\n'); | |
5e176d54 | 772 | else |
46c04366 | 773 | seq_putc(seq, ' '); |
5e176d54 | 774 | } |
46c04366 | 775 | |
5e176d54 JK |
776 | return 0; |
777 | } | |
778 | ||
f00d6fa7 JK |
779 | static int segment_bits_seq_show(struct seq_file *seq, void *offset) |
780 | { | |
781 | struct super_block *sb = seq->private; | |
782 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
783 | unsigned int total_segs = | |
784 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
785 | int i, j; | |
786 | ||
787 | seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" | |
788 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
789 | ||
790 | for (i = 0; i < total_segs; i++) { | |
791 | struct seg_entry *se = get_seg_entry(sbi, i); | |
792 | ||
793 | seq_printf(seq, "%-10d", i); | |
794 | seq_printf(seq, "%d|%-3u|", se->type, | |
795 | get_valid_blocks(sbi, i, 1)); | |
796 | for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) | |
797 | seq_printf(seq, "%x ", se->cur_valid_map[j]); | |
798 | seq_putc(seq, '\n'); | |
799 | } | |
800 | return 0; | |
801 | } | |
802 | ||
b7a15f3d JK |
803 | #define F2FS_PROC_FILE_DEF(_name) \ |
804 | static int _name##_open_fs(struct inode *inode, struct file *file) \ | |
805 | { \ | |
806 | return single_open(file, _name##_seq_show, PDE_DATA(inode)); \ | |
807 | } \ | |
808 | \ | |
809 | static const struct file_operations f2fs_seq_##_name##_fops = { \ | |
810 | .owner = THIS_MODULE, \ | |
811 | .open = _name##_open_fs, \ | |
812 | .read = seq_read, \ | |
813 | .llseek = seq_lseek, \ | |
814 | .release = single_release, \ | |
5e176d54 JK |
815 | }; |
816 | ||
b7a15f3d | 817 | F2FS_PROC_FILE_DEF(segment_info); |
f00d6fa7 | 818 | F2FS_PROC_FILE_DEF(segment_bits); |
b7a15f3d | 819 | |
498c5e9f YH |
820 | static void default_options(struct f2fs_sb_info *sbi) |
821 | { | |
822 | /* init some FS parameters */ | |
823 | sbi->active_logs = NR_CURSEG_TYPE; | |
824 | ||
825 | set_opt(sbi, BG_GC); | |
826 | set_opt(sbi, INLINE_DATA); | |
3e72f721 | 827 | set_opt(sbi, EXTENT_CACHE); |
498c5e9f YH |
828 | |
829 | #ifdef CONFIG_F2FS_FS_XATTR | |
830 | set_opt(sbi, XATTR_USER); | |
831 | #endif | |
832 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
833 | set_opt(sbi, POSIX_ACL); | |
834 | #endif | |
835 | } | |
836 | ||
696c018c NJ |
837 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
838 | { | |
839 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
840 | struct f2fs_mount_info org_mount_opt; | |
841 | int err, active_logs; | |
876dc59e GZ |
842 | bool need_restart_gc = false; |
843 | bool need_stop_gc = false; | |
9cd81ce3 | 844 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
696c018c NJ |
845 | |
846 | /* | |
847 | * Save the old mount options in case we | |
848 | * need to restore them. | |
849 | */ | |
850 | org_mount_opt = sbi->mount_opt; | |
851 | active_logs = sbi->active_logs; | |
852 | ||
df728b0f JK |
853 | /* recover superblocks we couldn't write due to previous RO mount */ |
854 | if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { | |
855 | err = f2fs_commit_super(sbi, false); | |
856 | f2fs_msg(sb, KERN_INFO, | |
857 | "Try to recover all the superblocks, ret: %d", err); | |
858 | if (!err) | |
859 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
860 | } | |
861 | ||
26666c8a | 862 | sbi->mount_opt.opt = 0; |
498c5e9f | 863 | default_options(sbi); |
26666c8a | 864 | |
696c018c NJ |
865 | /* parse mount options */ |
866 | err = parse_options(sb, data); | |
867 | if (err) | |
868 | goto restore_opts; | |
869 | ||
870 | /* | |
871 | * Previous and new state of filesystem is RO, | |
876dc59e | 872 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 873 | */ |
6b2920a5 | 874 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
875 | goto skip; |
876 | ||
9cd81ce3 CY |
877 | /* disallow enable/disable extent_cache dynamically */ |
878 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
879 | err = -EINVAL; | |
880 | f2fs_msg(sbi->sb, KERN_WARNING, | |
881 | "switch extent_cache option is not allowed"); | |
882 | goto restore_opts; | |
883 | } | |
884 | ||
696c018c NJ |
885 | /* |
886 | * We stop the GC thread if FS is mounted as RO | |
887 | * or if background_gc = off is passed in mount | |
888 | * option. Also sync the filesystem. | |
889 | */ | |
890 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
891 | if (sbi->gc_thread) { | |
892 | stop_gc_thread(sbi); | |
876dc59e | 893 | need_restart_gc = true; |
696c018c | 894 | } |
aba291b3 | 895 | } else if (!sbi->gc_thread) { |
696c018c NJ |
896 | err = start_gc_thread(sbi); |
897 | if (err) | |
898 | goto restore_opts; | |
876dc59e GZ |
899 | need_stop_gc = true; |
900 | } | |
901 | ||
faa0e55b JK |
902 | if (*flags & MS_RDONLY) { |
903 | writeback_inodes_sb(sb, WB_REASON_SYNC); | |
904 | sync_inodes_sb(sb); | |
905 | ||
906 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
907 | set_sbi_flag(sbi, SBI_IS_CLOSE); | |
908 | f2fs_sync_fs(sb, 1); | |
909 | clear_sbi_flag(sbi, SBI_IS_CLOSE); | |
910 | } | |
911 | ||
876dc59e GZ |
912 | /* |
913 | * We stop issue flush thread if FS is mounted as RO | |
914 | * or if flush_merge is not passed in mount option. | |
915 | */ | |
916 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 917 | destroy_flush_cmd_control(sbi); |
aba291b3 | 918 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
919 | err = create_flush_cmd_control(sbi); |
920 | if (err) | |
a688b9d9 | 921 | goto restore_gc; |
696c018c NJ |
922 | } |
923 | skip: | |
924 | /* Update the POSIXACL Flag */ | |
df728b0f | 925 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
696c018c | 926 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
df728b0f | 927 | |
696c018c | 928 | return 0; |
876dc59e GZ |
929 | restore_gc: |
930 | if (need_restart_gc) { | |
931 | if (start_gc_thread(sbi)) | |
932 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 933 | "background gc thread has stopped"); |
876dc59e GZ |
934 | } else if (need_stop_gc) { |
935 | stop_gc_thread(sbi); | |
936 | } | |
696c018c NJ |
937 | restore_opts: |
938 | sbi->mount_opt = org_mount_opt; | |
939 | sbi->active_logs = active_logs; | |
940 | return err; | |
941 | } | |
942 | ||
aff063e2 JK |
943 | static struct super_operations f2fs_sops = { |
944 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 945 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
946 | .destroy_inode = f2fs_destroy_inode, |
947 | .write_inode = f2fs_write_inode, | |
b3783873 | 948 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
949 | .show_options = f2fs_show_options, |
950 | .evict_inode = f2fs_evict_inode, | |
951 | .put_super = f2fs_put_super, | |
952 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
953 | .freeze_fs = f2fs_freeze, |
954 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 955 | .statfs = f2fs_statfs, |
696c018c | 956 | .remount_fs = f2fs_remount, |
aff063e2 JK |
957 | }; |
958 | ||
0b81d077 JK |
959 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
960 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) | |
961 | { | |
962 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
963 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
964 | ctx, len, NULL); | |
965 | } | |
966 | ||
967 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, | |
968 | void *fs_data) | |
969 | { | |
970 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
971 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
972 | ctx, len, fs_data, XATTR_CREATE); | |
973 | } | |
974 | ||
975 | static unsigned f2fs_max_namelen(struct inode *inode) | |
976 | { | |
977 | return S_ISLNK(inode->i_mode) ? | |
978 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; | |
979 | } | |
980 | ||
981 | static struct fscrypt_operations f2fs_cryptops = { | |
982 | .get_context = f2fs_get_context, | |
983 | .set_context = f2fs_set_context, | |
984 | .is_encrypted = f2fs_encrypted_inode, | |
985 | .empty_dir = f2fs_empty_dir, | |
986 | .max_namelen = f2fs_max_namelen, | |
987 | }; | |
988 | #else | |
989 | static struct fscrypt_operations f2fs_cryptops = { | |
990 | .is_encrypted = f2fs_encrypted_inode, | |
991 | }; | |
992 | #endif | |
993 | ||
aff063e2 JK |
994 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
995 | u64 ino, u32 generation) | |
996 | { | |
997 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
998 | struct inode *inode; | |
999 | ||
d6b7d4b3 | 1000 | if (check_nid_range(sbi, ino)) |
910bb12d | 1001 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
1002 | |
1003 | /* | |
1004 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
1005 | * However f2fs_iget currently does appropriate checks to handle stale | |
1006 | * inodes so everything is OK. | |
1007 | */ | |
1008 | inode = f2fs_iget(sb, ino); | |
1009 | if (IS_ERR(inode)) | |
1010 | return ERR_CAST(inode); | |
6bacf52f | 1011 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
1012 | /* we didn't find the right inode.. */ |
1013 | iput(inode); | |
1014 | return ERR_PTR(-ESTALE); | |
1015 | } | |
1016 | return inode; | |
1017 | } | |
1018 | ||
1019 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
1020 | int fh_len, int fh_type) | |
1021 | { | |
1022 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
1023 | f2fs_nfs_get_inode); | |
1024 | } | |
1025 | ||
1026 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
1027 | int fh_len, int fh_type) | |
1028 | { | |
1029 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
1030 | f2fs_nfs_get_inode); | |
1031 | } | |
1032 | ||
1033 | static const struct export_operations f2fs_export_ops = { | |
1034 | .fh_to_dentry = f2fs_fh_to_dentry, | |
1035 | .fh_to_parent = f2fs_fh_to_parent, | |
1036 | .get_parent = f2fs_get_parent, | |
1037 | }; | |
1038 | ||
e0afc4d6 | 1039 | static loff_t max_file_blocks(void) |
aff063e2 | 1040 | { |
de93653f | 1041 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
1042 | loff_t leaf_count = ADDRS_PER_BLOCK; |
1043 | ||
1044 | /* two direct node blocks */ | |
1045 | result += (leaf_count * 2); | |
1046 | ||
1047 | /* two indirect node blocks */ | |
1048 | leaf_count *= NIDS_PER_BLOCK; | |
1049 | result += (leaf_count * 2); | |
1050 | ||
1051 | /* one double indirect node block */ | |
1052 | leaf_count *= NIDS_PER_BLOCK; | |
1053 | result += leaf_count; | |
1054 | ||
aff063e2 JK |
1055 | return result; |
1056 | } | |
1057 | ||
fd694733 JK |
1058 | static int __f2fs_commit_super(struct buffer_head *bh, |
1059 | struct f2fs_super_block *super) | |
1060 | { | |
1061 | lock_buffer(bh); | |
1062 | if (super) | |
1063 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); | |
1064 | set_buffer_uptodate(bh); | |
1065 | set_buffer_dirty(bh); | |
1066 | unlock_buffer(bh); | |
1067 | ||
1068 | /* it's rare case, we can do fua all the time */ | |
1069 | return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); | |
1070 | } | |
1071 | ||
df728b0f | 1072 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
fd694733 | 1073 | struct buffer_head *bh) |
9a59b62f | 1074 | { |
fd694733 JK |
1075 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1076 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1077 | struct super_block *sb = sbi->sb; |
9a59b62f CY |
1078 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
1079 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
1080 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
1081 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
1082 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
1083 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
1084 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
1085 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
1086 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
1087 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
1088 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
1089 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
1090 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
fd694733 JK |
1091 | u64 main_end_blkaddr = main_blkaddr + |
1092 | (segment_count_main << log_blocks_per_seg); | |
1093 | u64 seg_end_blkaddr = segment0_blkaddr + | |
1094 | (segment_count << log_blocks_per_seg); | |
9a59b62f CY |
1095 | |
1096 | if (segment0_blkaddr != cp_blkaddr) { | |
1097 | f2fs_msg(sb, KERN_INFO, | |
1098 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
1099 | segment0_blkaddr, cp_blkaddr); | |
1100 | return true; | |
1101 | } | |
1102 | ||
1103 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
1104 | sit_blkaddr) { | |
1105 | f2fs_msg(sb, KERN_INFO, | |
1106 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
1107 | cp_blkaddr, sit_blkaddr, | |
1108 | segment_count_ckpt << log_blocks_per_seg); | |
1109 | return true; | |
1110 | } | |
1111 | ||
1112 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
1113 | nat_blkaddr) { | |
1114 | f2fs_msg(sb, KERN_INFO, | |
1115 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
1116 | sit_blkaddr, nat_blkaddr, | |
1117 | segment_count_sit << log_blocks_per_seg); | |
1118 | return true; | |
1119 | } | |
1120 | ||
1121 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
1122 | ssa_blkaddr) { | |
1123 | f2fs_msg(sb, KERN_INFO, | |
1124 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1125 | nat_blkaddr, ssa_blkaddr, | |
1126 | segment_count_nat << log_blocks_per_seg); | |
1127 | return true; | |
1128 | } | |
1129 | ||
1130 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1131 | main_blkaddr) { | |
1132 | f2fs_msg(sb, KERN_INFO, | |
1133 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1134 | ssa_blkaddr, main_blkaddr, | |
1135 | segment_count_ssa << log_blocks_per_seg); | |
1136 | return true; | |
1137 | } | |
1138 | ||
fd694733 | 1139 | if (main_end_blkaddr > seg_end_blkaddr) { |
9a59b62f | 1140 | f2fs_msg(sb, KERN_INFO, |
fd694733 | 1141 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
9a59b62f | 1142 | main_blkaddr, |
fd694733 JK |
1143 | segment0_blkaddr + |
1144 | (segment_count << log_blocks_per_seg), | |
9a59b62f CY |
1145 | segment_count_main << log_blocks_per_seg); |
1146 | return true; | |
fd694733 JK |
1147 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
1148 | int err = 0; | |
1149 | char *res; | |
1150 | ||
1151 | /* fix in-memory information all the time */ | |
1152 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - | |
1153 | segment0_blkaddr) >> log_blocks_per_seg); | |
1154 | ||
1155 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { | |
df728b0f | 1156 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
fd694733 JK |
1157 | res = "internally"; |
1158 | } else { | |
1159 | err = __f2fs_commit_super(bh, NULL); | |
1160 | res = err ? "failed" : "done"; | |
1161 | } | |
1162 | f2fs_msg(sb, KERN_INFO, | |
1163 | "Fix alignment : %s, start(%u) end(%u) block(%u)", | |
1164 | res, main_blkaddr, | |
1165 | segment0_blkaddr + | |
1166 | (segment_count << log_blocks_per_seg), | |
1167 | segment_count_main << log_blocks_per_seg); | |
1168 | if (err) | |
1169 | return true; | |
9a59b62f | 1170 | } |
9a59b62f CY |
1171 | return false; |
1172 | } | |
1173 | ||
df728b0f | 1174 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
fd694733 | 1175 | struct buffer_head *bh) |
aff063e2 | 1176 | { |
fd694733 JK |
1177 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1178 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1179 | struct super_block *sb = sbi->sb; |
aff063e2 JK |
1180 | unsigned int blocksize; |
1181 | ||
a07ef784 NJ |
1182 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1183 | f2fs_msg(sb, KERN_INFO, | |
1184 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1185 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1186 | return 1; |
a07ef784 | 1187 | } |
aff063e2 | 1188 | |
5c9b4692 | 1189 | /* Currently, support only 4KB page cache size */ |
09cbfeaf | 1190 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
5c9b4692 | 1191 | f2fs_msg(sb, KERN_INFO, |
14d7e9de | 1192 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
09cbfeaf | 1193 | PAGE_SIZE); |
5c9b4692 | 1194 | return 1; |
1195 | } | |
1196 | ||
aff063e2 JK |
1197 | /* Currently, support only 4KB block size */ |
1198 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1199 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1200 | f2fs_msg(sb, KERN_INFO, |
1201 | "Invalid blocksize (%u), supports only 4KB\n", | |
1202 | blocksize); | |
aff063e2 | 1203 | return 1; |
a07ef784 | 1204 | } |
5c9b4692 | 1205 | |
9a59b62f CY |
1206 | /* check log blocks per segment */ |
1207 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1208 | f2fs_msg(sb, KERN_INFO, | |
1209 | "Invalid log blocks per segment (%u)\n", | |
1210 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1211 | return 1; | |
1212 | } | |
1213 | ||
55cf9cb6 CY |
1214 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1215 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1216 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1217 | le32_to_cpu(raw_super->log_sectorsize) < | |
1218 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1219 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1220 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1221 | return 1; |
a07ef784 | 1222 | } |
55cf9cb6 CY |
1223 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1224 | le32_to_cpu(raw_super->log_sectorsize) != | |
1225 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1226 | f2fs_msg(sb, KERN_INFO, | |
1227 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1228 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1229 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1230 | return 1; |
a07ef784 | 1231 | } |
9a59b62f CY |
1232 | |
1233 | /* check reserved ino info */ | |
1234 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1235 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1236 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1237 | f2fs_msg(sb, KERN_INFO, | |
1238 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1239 | le32_to_cpu(raw_super->node_ino), | |
1240 | le32_to_cpu(raw_super->meta_ino), | |
1241 | le32_to_cpu(raw_super->root_ino)); | |
1242 | return 1; | |
1243 | } | |
1244 | ||
1245 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ | |
df728b0f | 1246 | if (sanity_check_area_boundary(sbi, bh)) |
9a59b62f CY |
1247 | return 1; |
1248 | ||
aff063e2 JK |
1249 | return 0; |
1250 | } | |
1251 | ||
984ec63c | 1252 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1253 | { |
1254 | unsigned int total, fsmeta; | |
577e3495 JK |
1255 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1256 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
1257 | |
1258 | total = le32_to_cpu(raw_super->segment_count); | |
1259 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1260 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1261 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1262 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1263 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1264 | ||
6bacf52f | 1265 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1266 | return 1; |
577e3495 | 1267 | |
1e968fdf | 1268 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1269 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1270 | return 1; | |
1271 | } | |
aff063e2 JK |
1272 | return 0; |
1273 | } | |
1274 | ||
1275 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1276 | { | |
1277 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
1278 | int i; | |
1279 | ||
1280 | sbi->log_sectors_per_block = | |
1281 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1282 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1283 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1284 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1285 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1286 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1287 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1288 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1289 | sbi->total_node_count = | |
1290 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1291 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1292 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1293 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1294 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1295 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1296 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 JK |
1297 | |
1298 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
1299 | atomic_set(&sbi->nr_pages[i], 0); | |
ab9fa662 JK |
1300 | |
1301 | sbi->dir_level = DEF_DIR_LEVEL; | |
6beceb54 | 1302 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1303 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1304 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d JK |
1305 | |
1306 | INIT_LIST_HEAD(&sbi->s_list); | |
1307 | mutex_init(&sbi->umount_mutex); | |
aff063e2 JK |
1308 | } |
1309 | ||
9076a75f GZ |
1310 | /* |
1311 | * Read f2fs raw super block. | |
2b39e907 SL |
1312 | * Because we have two copies of super block, so read both of them |
1313 | * to get the first valid one. If any one of them is broken, we pass | |
1314 | * them recovery flag back to the caller. | |
9076a75f | 1315 | */ |
df728b0f | 1316 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
9076a75f | 1317 | struct f2fs_super_block **raw_super, |
e8240f65 | 1318 | int *valid_super_block, int *recovery) |
14d7e9de | 1319 | { |
df728b0f | 1320 | struct super_block *sb = sbi->sb; |
2b39e907 | 1321 | int block; |
e8240f65 | 1322 | struct buffer_head *bh; |
fd694733 | 1323 | struct f2fs_super_block *super; |
da554e48 | 1324 | int err = 0; |
14d7e9de | 1325 | |
b39f0de2 YH |
1326 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1327 | if (!super) | |
1328 | return -ENOMEM; | |
2b39e907 SL |
1329 | |
1330 | for (block = 0; block < 2; block++) { | |
1331 | bh = sb_bread(sb, block); | |
1332 | if (!bh) { | |
1333 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", | |
9076a75f | 1334 | block + 1); |
2b39e907 SL |
1335 | err = -EIO; |
1336 | continue; | |
1337 | } | |
14d7e9de | 1338 | |
2b39e907 | 1339 | /* sanity checking of raw super */ |
df728b0f | 1340 | if (sanity_check_raw_super(sbi, bh)) { |
2b39e907 SL |
1341 | f2fs_msg(sb, KERN_ERR, |
1342 | "Can't find valid F2FS filesystem in %dth superblock", | |
1343 | block + 1); | |
1344 | err = -EINVAL; | |
1345 | brelse(bh); | |
1346 | continue; | |
1347 | } | |
14d7e9de | 1348 | |
2b39e907 | 1349 | if (!*raw_super) { |
fd694733 JK |
1350 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
1351 | sizeof(*super)); | |
2b39e907 SL |
1352 | *valid_super_block = block; |
1353 | *raw_super = super; | |
1354 | } | |
1355 | brelse(bh); | |
da554e48 | 1356 | } |
1357 | ||
2b39e907 SL |
1358 | /* Fail to read any one of the superblocks*/ |
1359 | if (err < 0) | |
1360 | *recovery = 1; | |
da554e48 | 1361 | |
da554e48 | 1362 | /* No valid superblock */ |
2b39e907 | 1363 | if (!*raw_super) |
b39f0de2 | 1364 | kfree(super); |
2b39e907 SL |
1365 | else |
1366 | err = 0; | |
da554e48 | 1367 | |
2b39e907 | 1368 | return err; |
14d7e9de | 1369 | } |
1370 | ||
fd694733 | 1371 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad | 1372 | { |
5d909cdb | 1373 | struct buffer_head *bh; |
26d815ad JK |
1374 | int err; |
1375 | ||
df728b0f JK |
1376 | if ((recover && f2fs_readonly(sbi->sb)) || |
1377 | bdev_read_only(sbi->sb->s_bdev)) { | |
1378 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
f2353d7b | 1379 | return -EROFS; |
df728b0f | 1380 | } |
f2353d7b | 1381 | |
fd694733 JK |
1382 | /* write back-up superblock first */ |
1383 | bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); | |
5d909cdb JK |
1384 | if (!bh) |
1385 | return -EIO; | |
fd694733 | 1386 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
5d909cdb | 1387 | brelse(bh); |
c5bda1c8 CY |
1388 | |
1389 | /* if we are in recovery path, skip writing valid superblock */ | |
1390 | if (recover || err) | |
5d909cdb | 1391 | return err; |
26d815ad JK |
1392 | |
1393 | /* write current valid superblock */ | |
fd694733 JK |
1394 | bh = sb_getblk(sbi->sb, sbi->valid_super_block); |
1395 | if (!bh) | |
1396 | return -EIO; | |
1397 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); | |
1398 | brelse(bh); | |
1399 | return err; | |
26d815ad JK |
1400 | } |
1401 | ||
aff063e2 JK |
1402 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1403 | { | |
1404 | struct f2fs_sb_info *sbi; | |
da554e48 | 1405 | struct f2fs_super_block *raw_super; |
aff063e2 | 1406 | struct inode *root; |
da554e48 | 1407 | long err; |
2adc3505 | 1408 | bool retry = true, need_fsck = false; |
dabc4a5c | 1409 | char *options = NULL; |
e8240f65 | 1410 | int recovery, i, valid_super_block; |
8f1dbbbb | 1411 | struct curseg_info *seg_i; |
aff063e2 | 1412 | |
ed2e621a | 1413 | try_onemore: |
da554e48 | 1414 | err = -EINVAL; |
1415 | raw_super = NULL; | |
e8240f65 | 1416 | valid_super_block = -1; |
da554e48 | 1417 | recovery = 0; |
1418 | ||
aff063e2 JK |
1419 | /* allocate memory for f2fs-specific super block info */ |
1420 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1421 | if (!sbi) | |
1422 | return -ENOMEM; | |
1423 | ||
df728b0f JK |
1424 | sbi->sb = sb; |
1425 | ||
43b6573b KM |
1426 | /* Load the checksum driver */ |
1427 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); | |
1428 | if (IS_ERR(sbi->s_chksum_driver)) { | |
1429 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); | |
1430 | err = PTR_ERR(sbi->s_chksum_driver); | |
1431 | sbi->s_chksum_driver = NULL; | |
1432 | goto free_sbi; | |
1433 | } | |
1434 | ||
ff9234ad | 1435 | /* set a block size */ |
6bacf52f | 1436 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1437 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1438 | goto free_sbi; |
a07ef784 | 1439 | } |
aff063e2 | 1440 | |
df728b0f | 1441 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
e8240f65 | 1442 | &recovery); |
9076a75f GZ |
1443 | if (err) |
1444 | goto free_sbi; | |
1445 | ||
5fb08372 | 1446 | sb->s_fs_info = sbi; |
498c5e9f | 1447 | default_options(sbi); |
aff063e2 | 1448 | /* parse mount options */ |
dabc4a5c JK |
1449 | options = kstrdup((const char *)data, GFP_KERNEL); |
1450 | if (data && !options) { | |
1451 | err = -ENOMEM; | |
aff063e2 | 1452 | goto free_sb_buf; |
dabc4a5c JK |
1453 | } |
1454 | ||
1455 | err = parse_options(sb, options); | |
1456 | if (err) | |
1457 | goto free_options; | |
aff063e2 | 1458 | |
e0afc4d6 CY |
1459 | sbi->max_file_blocks = max_file_blocks(); |
1460 | sb->s_maxbytes = sbi->max_file_blocks << | |
1461 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1462 | sb->s_max_links = F2FS_LINK_MAX; |
1463 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1464 | ||
1465 | sb->s_op = &f2fs_sops; | |
0b81d077 | 1466 | sb->s_cop = &f2fs_cryptops; |
aff063e2 JK |
1467 | sb->s_xattr = f2fs_xattr_handlers; |
1468 | sb->s_export_op = &f2fs_export_ops; | |
1469 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1470 | sb->s_time_gran = 1; |
1471 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1472 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1473 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1474 | ||
1475 | /* init f2fs-specific super block info */ | |
aff063e2 | 1476 | sbi->raw_super = raw_super; |
e8240f65 | 1477 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1478 | mutex_init(&sbi->gc_mutex); |
5463e7c1 | 1479 | mutex_init(&sbi->writepages); |
aff063e2 | 1480 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1481 | init_rwsem(&sbi->node_write); |
315df839 JK |
1482 | |
1483 | /* disallow all the data/node/meta page writes */ | |
1484 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1485 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1486 | |
df0f8dc0 | 1487 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1488 | sbi->read_io.sbi = sbi; |
1489 | sbi->read_io.bio = NULL; | |
1490 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1491 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1492 | sbi->write_io[i].sbi = sbi; |
1493 | sbi->write_io[i].bio = NULL; | |
1494 | } | |
971767ca | 1495 | |
e479556b | 1496 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1497 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1498 | init_sb_info(sbi); |
1499 | ||
1500 | /* get an inode for meta space */ | |
1501 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1502 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1503 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1504 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1505 | goto free_options; |
aff063e2 JK |
1506 | } |
1507 | ||
1508 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1509 | if (err) { |
1510 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1511 | goto free_meta_inode; |
a07ef784 | 1512 | } |
aff063e2 | 1513 | |
aff063e2 JK |
1514 | sbi->total_valid_node_count = |
1515 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
1516 | sbi->total_valid_inode_count = | |
1517 | le32_to_cpu(sbi->ckpt->valid_inode_count); | |
1518 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); | |
1519 | sbi->total_valid_block_count = | |
1520 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1521 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1522 | sbi->alloc_valid_block_count = 0; | |
c227f912 CY |
1523 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1524 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1525 | spin_lock_init(&sbi->inode_lock[i]); | |
1526 | } | |
aff063e2 | 1527 | |
1dcc336b CY |
1528 | init_extent_cache_info(sbi); |
1529 | ||
6451e041 | 1530 | init_ino_entry_info(sbi); |
aff063e2 JK |
1531 | |
1532 | /* setup f2fs internal modules */ | |
1533 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1534 | if (err) { |
1535 | f2fs_msg(sb, KERN_ERR, | |
1536 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1537 | goto free_sm; |
a07ef784 | 1538 | } |
aff063e2 | 1539 | err = build_node_manager(sbi); |
a07ef784 NJ |
1540 | if (err) { |
1541 | f2fs_msg(sb, KERN_ERR, | |
1542 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1543 | goto free_nm; |
a07ef784 | 1544 | } |
aff063e2 | 1545 | |
8f1dbbbb SL |
1546 | /* For write statistics */ |
1547 | if (sb->s_bdev->bd_part) | |
1548 | sbi->sectors_written_start = | |
1549 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1550 | ||
1551 | /* Read accumulated write IO statistics if exists */ | |
1552 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1553 | if (__exist_node_summaries(sbi)) | |
1554 | sbi->kbytes_written = | |
b2dde6fc | 1555 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
8f1dbbbb | 1556 | |
aff063e2 JK |
1557 | build_gc_manager(sbi); |
1558 | ||
1559 | /* get an inode for node space */ | |
1560 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1561 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1562 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1563 | err = PTR_ERR(sbi->node_inode); |
1564 | goto free_nm; | |
1565 | } | |
1566 | ||
2658e50d JK |
1567 | f2fs_join_shrinker(sbi); |
1568 | ||
aff063e2 | 1569 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1570 | err = recover_orphan_inodes(sbi); |
1571 | if (err) | |
1572 | goto free_node_inode; | |
aff063e2 JK |
1573 | |
1574 | /* read root inode and dentry */ | |
1575 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1576 | if (IS_ERR(root)) { | |
a07ef784 | 1577 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1578 | err = PTR_ERR(root); |
1579 | goto free_node_inode; | |
1580 | } | |
8f99a946 | 1581 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1582 | iput(root); |
8f99a946 | 1583 | err = -EINVAL; |
9d847950 | 1584 | goto free_node_inode; |
8f99a946 | 1585 | } |
aff063e2 JK |
1586 | |
1587 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1588 | if (!sb->s_root) { | |
1589 | err = -ENOMEM; | |
1590 | goto free_root_inode; | |
1591 | } | |
1592 | ||
aff063e2 JK |
1593 | err = f2fs_build_stats(sbi); |
1594 | if (err) | |
6437d1b0 | 1595 | goto free_root_inode; |
aff063e2 | 1596 | |
5e176d54 JK |
1597 | if (f2fs_proc_root) |
1598 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1599 | ||
f00d6fa7 | 1600 | if (sbi->s_proc) { |
5e176d54 JK |
1601 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, |
1602 | &f2fs_seq_segment_info_fops, sb); | |
f00d6fa7 JK |
1603 | proc_create_data("segment_bits", S_IRUGO, sbi->s_proc, |
1604 | &f2fs_seq_segment_bits_fops, sb); | |
1605 | } | |
5e176d54 | 1606 | |
b59d0bae NJ |
1607 | sbi->s_kobj.kset = f2fs_kset; |
1608 | init_completion(&sbi->s_kobj_unregister); | |
1609 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1610 | "%s", sb->s_id); | |
1611 | if (err) | |
6437d1b0 | 1612 | goto free_proc; |
b59d0bae | 1613 | |
6437d1b0 JK |
1614 | /* recover fsynced data */ |
1615 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1616 | /* |
1617 | * mount should be failed, when device has readonly mode, and | |
1618 | * previous checkpoint was not done by clean system shutdown. | |
1619 | */ | |
1620 | if (bdev_read_only(sb->s_bdev) && | |
1621 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { | |
1622 | err = -EROFS; | |
1623 | goto free_kobj; | |
1624 | } | |
2adc3505 CY |
1625 | |
1626 | if (need_fsck) | |
1627 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1628 | ||
6781eabb JK |
1629 | err = recover_fsync_data(sbi, false); |
1630 | if (err < 0) { | |
2adc3505 | 1631 | need_fsck = true; |
6437d1b0 JK |
1632 | f2fs_msg(sb, KERN_ERR, |
1633 | "Cannot recover all fsync data errno=%ld", err); | |
ed2e621a JK |
1634 | goto free_kobj; |
1635 | } | |
6781eabb JK |
1636 | } else { |
1637 | err = recover_fsync_data(sbi, true); | |
1638 | ||
1639 | if (!f2fs_readonly(sb) && err > 0) { | |
1640 | err = -EINVAL; | |
1641 | f2fs_msg(sb, KERN_ERR, | |
1642 | "Need to recover fsync data"); | |
1643 | goto free_kobj; | |
1644 | } | |
6437d1b0 | 1645 | } |
6781eabb | 1646 | |
315df839 JK |
1647 | /* recover_fsync_data() cleared this already */ |
1648 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1649 | |
6437d1b0 JK |
1650 | /* |
1651 | * If filesystem is not mounted as read-only then | |
1652 | * do start the gc_thread. | |
1653 | */ | |
6c029932 | 1654 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1655 | /* After POR, we can run background GC thread.*/ |
1656 | err = start_gc_thread(sbi); | |
1657 | if (err) | |
1658 | goto free_kobj; | |
1659 | } | |
dabc4a5c | 1660 | kfree(options); |
da554e48 | 1661 | |
1662 | /* recover broken superblock */ | |
f2353d7b | 1663 | if (recovery) { |
41214b3c CY |
1664 | err = f2fs_commit_super(sbi, true); |
1665 | f2fs_msg(sb, KERN_INFO, | |
1666 | "Try to recover %dth superblock, ret: %ld", | |
1667 | sbi->valid_super_block ? 1 : 2, err); | |
da554e48 | 1668 | } |
1669 | ||
6beceb54 | 1670 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1671 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1672 | return 0; |
6437d1b0 JK |
1673 | |
1674 | free_kobj: | |
1675 | kobject_del(&sbi->s_kobj); | |
29ba108d CY |
1676 | kobject_put(&sbi->s_kobj); |
1677 | wait_for_completion(&sbi->s_kobj_unregister); | |
6437d1b0 | 1678 | free_proc: |
1d15bd20 CY |
1679 | if (sbi->s_proc) { |
1680 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 1681 | remove_proc_entry("segment_bits", sbi->s_proc); |
1d15bd20 CY |
1682 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
1683 | } | |
1684 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1685 | free_root_inode: |
1686 | dput(sb->s_root); | |
1687 | sb->s_root = NULL; | |
1688 | free_node_inode: | |
2658e50d JK |
1689 | mutex_lock(&sbi->umount_mutex); |
1690 | f2fs_leave_shrinker(sbi); | |
aff063e2 | 1691 | iput(sbi->node_inode); |
2658e50d | 1692 | mutex_unlock(&sbi->umount_mutex); |
aff063e2 JK |
1693 | free_nm: |
1694 | destroy_node_manager(sbi); | |
1695 | free_sm: | |
1696 | destroy_segment_manager(sbi); | |
aff063e2 JK |
1697 | kfree(sbi->ckpt); |
1698 | free_meta_inode: | |
1699 | make_bad_inode(sbi->meta_inode); | |
1700 | iput(sbi->meta_inode); | |
dabc4a5c JK |
1701 | free_options: |
1702 | kfree(options); | |
aff063e2 | 1703 | free_sb_buf: |
b39f0de2 | 1704 | kfree(raw_super); |
aff063e2 | 1705 | free_sbi: |
43b6573b KM |
1706 | if (sbi->s_chksum_driver) |
1707 | crypto_free_shash(sbi->s_chksum_driver); | |
aff063e2 | 1708 | kfree(sbi); |
ed2e621a JK |
1709 | |
1710 | /* give only one another chance */ | |
1711 | if (retry) { | |
9df47ba7 | 1712 | retry = false; |
ed2e621a JK |
1713 | shrink_dcache_sb(sb); |
1714 | goto try_onemore; | |
1715 | } | |
aff063e2 JK |
1716 | return err; |
1717 | } | |
1718 | ||
1719 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1720 | const char *dev_name, void *data) | |
1721 | { | |
1722 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1723 | } | |
1724 | ||
30a5537f JK |
1725 | static void kill_f2fs_super(struct super_block *sb) |
1726 | { | |
1727 | if (sb->s_root) | |
caf0047e | 1728 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1729 | kill_block_super(sb); |
1730 | } | |
1731 | ||
aff063e2 JK |
1732 | static struct file_system_type f2fs_fs_type = { |
1733 | .owner = THIS_MODULE, | |
1734 | .name = "f2fs", | |
1735 | .mount = f2fs_mount, | |
30a5537f | 1736 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1737 | .fs_flags = FS_REQUIRES_DEV, |
1738 | }; | |
7f78e035 | 1739 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1740 | |
6e6093a8 | 1741 | static int __init init_inodecache(void) |
aff063e2 | 1742 | { |
5d097056 VD |
1743 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1744 | sizeof(struct f2fs_inode_info), 0, | |
1745 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1746 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1747 | return -ENOMEM; |
1748 | return 0; | |
1749 | } | |
1750 | ||
1751 | static void destroy_inodecache(void) | |
1752 | { | |
1753 | /* | |
1754 | * Make sure all delayed rcu free inodes are flushed before we | |
1755 | * destroy cache. | |
1756 | */ | |
1757 | rcu_barrier(); | |
1758 | kmem_cache_destroy(f2fs_inode_cachep); | |
1759 | } | |
1760 | ||
1761 | static int __init init_f2fs_fs(void) | |
1762 | { | |
1763 | int err; | |
1764 | ||
c0508650 JK |
1765 | f2fs_build_trace_ios(); |
1766 | ||
aff063e2 JK |
1767 | err = init_inodecache(); |
1768 | if (err) | |
1769 | goto fail; | |
1770 | err = create_node_manager_caches(); | |
1771 | if (err) | |
9890ff3f | 1772 | goto free_inodecache; |
7fd9e544 | 1773 | err = create_segment_manager_caches(); |
aff063e2 | 1774 | if (err) |
9890ff3f | 1775 | goto free_node_manager_caches; |
aff063e2 JK |
1776 | err = create_checkpoint_caches(); |
1777 | if (err) | |
06292073 | 1778 | goto free_segment_manager_caches; |
1dcc336b CY |
1779 | err = create_extent_cache(); |
1780 | if (err) | |
1781 | goto free_checkpoint_caches; | |
b59d0bae | 1782 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1783 | if (!f2fs_kset) { |
1784 | err = -ENOMEM; | |
1dcc336b | 1785 | goto free_extent_cache; |
6e6b978c | 1786 | } |
2658e50d | 1787 | err = register_shrinker(&f2fs_shrinker_info); |
cfc4d971 | 1788 | if (err) |
0b81d077 | 1789 | goto free_kset; |
2658e50d JK |
1790 | |
1791 | err = register_filesystem(&f2fs_fs_type); | |
1792 | if (err) | |
1793 | goto free_shrinker; | |
787c7b8c CY |
1794 | err = f2fs_create_root_stats(); |
1795 | if (err) | |
1796 | goto free_filesystem; | |
5e176d54 | 1797 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
1798 | return 0; |
1799 | ||
787c7b8c CY |
1800 | free_filesystem: |
1801 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
1802 | free_shrinker: |
1803 | unregister_shrinker(&f2fs_shrinker_info); | |
9890ff3f ZH |
1804 | free_kset: |
1805 | kset_unregister(f2fs_kset); | |
1dcc336b CY |
1806 | free_extent_cache: |
1807 | destroy_extent_cache(); | |
9890ff3f ZH |
1808 | free_checkpoint_caches: |
1809 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
1810 | free_segment_manager_caches: |
1811 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
1812 | free_node_manager_caches: |
1813 | destroy_node_manager_caches(); | |
1814 | free_inodecache: | |
1815 | destroy_inodecache(); | |
aff063e2 JK |
1816 | fail: |
1817 | return err; | |
1818 | } | |
1819 | ||
1820 | static void __exit exit_f2fs_fs(void) | |
1821 | { | |
5e176d54 | 1822 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 1823 | f2fs_destroy_root_stats(); |
2658e50d | 1824 | unregister_shrinker(&f2fs_shrinker_info); |
aff063e2 | 1825 | unregister_filesystem(&f2fs_fs_type); |
fdf6c8be | 1826 | destroy_extent_cache(); |
aff063e2 | 1827 | destroy_checkpoint_caches(); |
5dcd8a71 | 1828 | destroy_segment_manager_caches(); |
aff063e2 JK |
1829 | destroy_node_manager_caches(); |
1830 | destroy_inodecache(); | |
b59d0bae | 1831 | kset_unregister(f2fs_kset); |
351f4fba | 1832 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
1833 | } |
1834 | ||
1835 | module_init(init_f2fs_fs) | |
1836 | module_exit(exit_f2fs_fs) | |
1837 | ||
1838 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
1839 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
1840 | MODULE_LICENSE("GPL"); |