Commit | Line | Data |
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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 | 42 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
08796897 | 43 | struct f2fs_fault_info f2fs_fault; |
2c63fead JK |
44 | |
45 | char *fault_name[FAULT_MAX] = { | |
46 | [FAULT_KMALLOC] = "kmalloc", | |
c41f3cc3 | 47 | [FAULT_PAGE_ALLOC] = "page alloc", |
cb78942b JK |
48 | [FAULT_ALLOC_NID] = "alloc nid", |
49 | [FAULT_ORPHAN] = "orphan", | |
50 | [FAULT_BLOCK] = "no more block", | |
51 | [FAULT_DIR_DEPTH] = "too big dir depth", | |
2c63fead | 52 | }; |
08796897 SY |
53 | |
54 | static void f2fs_build_fault_attr(unsigned int rate) | |
55 | { | |
56 | if (rate) { | |
57 | atomic_set(&f2fs_fault.inject_ops, 0); | |
58 | f2fs_fault.inject_rate = rate; | |
59 | f2fs_fault.inject_type = (1 << FAULT_MAX) - 1; | |
60 | } else { | |
61 | memset(&f2fs_fault, 0, sizeof(struct f2fs_fault_info)); | |
62 | } | |
63 | } | |
73faec4d JK |
64 | #endif |
65 | ||
2658e50d JK |
66 | /* f2fs-wide shrinker description */ |
67 | static struct shrinker f2fs_shrinker_info = { | |
68 | .scan_objects = f2fs_shrink_scan, | |
69 | .count_objects = f2fs_shrink_count, | |
70 | .seeks = DEFAULT_SEEKS, | |
71 | }; | |
72 | ||
aff063e2 | 73 | enum { |
696c018c | 74 | Opt_gc_background, |
aff063e2 | 75 | Opt_disable_roll_forward, |
2d834bf9 | 76 | Opt_norecovery, |
aff063e2 JK |
77 | Opt_discard, |
78 | Opt_noheap, | |
4058c511 | 79 | Opt_user_xattr, |
aff063e2 | 80 | Opt_nouser_xattr, |
4058c511 | 81 | Opt_acl, |
aff063e2 JK |
82 | Opt_noacl, |
83 | Opt_active_logs, | |
84 | Opt_disable_ext_identify, | |
444c580f | 85 | Opt_inline_xattr, |
8274de77 | 86 | Opt_inline_data, |
5efd3c6f | 87 | Opt_inline_dentry, |
6b4afdd7 | 88 | Opt_flush_merge, |
0f7b2abd | 89 | Opt_nobarrier, |
d5053a34 | 90 | Opt_fastboot, |
89672159 | 91 | Opt_extent_cache, |
7daaea25 | 92 | Opt_noextent_cache, |
75342797 | 93 | Opt_noinline_data, |
343f40f0 | 94 | Opt_data_flush, |
73faec4d | 95 | Opt_fault_injection, |
aff063e2 JK |
96 | Opt_err, |
97 | }; | |
98 | ||
99 | static match_table_t f2fs_tokens = { | |
696c018c | 100 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 101 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 102 | {Opt_norecovery, "norecovery"}, |
aff063e2 JK |
103 | {Opt_discard, "discard"}, |
104 | {Opt_noheap, "no_heap"}, | |
4058c511 | 105 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 106 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 107 | {Opt_acl, "acl"}, |
aff063e2 JK |
108 | {Opt_noacl, "noacl"}, |
109 | {Opt_active_logs, "active_logs=%u"}, | |
110 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 111 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 112 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 113 | {Opt_inline_dentry, "inline_dentry"}, |
6b4afdd7 | 114 | {Opt_flush_merge, "flush_merge"}, |
0f7b2abd | 115 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 116 | {Opt_fastboot, "fastboot"}, |
89672159 | 117 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 118 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 119 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 120 | {Opt_data_flush, "data_flush"}, |
73faec4d | 121 | {Opt_fault_injection, "fault_injection=%u"}, |
aff063e2 JK |
122 | {Opt_err, NULL}, |
123 | }; | |
124 | ||
b59d0bae | 125 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
126 | enum { |
127 | GC_THREAD, /* struct f2fs_gc_thread */ | |
128 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 129 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 130 | F2FS_SBI, /* struct f2fs_sb_info */ |
08796897 SY |
131 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
132 | FAULT_INFO_RATE, /* struct f2fs_fault_info */ | |
133 | FAULT_INFO_TYPE, /* struct f2fs_fault_info */ | |
134 | #endif | |
ea91e9b0 JK |
135 | }; |
136 | ||
b59d0bae NJ |
137 | struct f2fs_attr { |
138 | struct attribute attr; | |
139 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
140 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
141 | const char *, size_t); | |
ea91e9b0 | 142 | int struct_type; |
b59d0bae NJ |
143 | int offset; |
144 | }; | |
145 | ||
ea91e9b0 JK |
146 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
147 | { | |
148 | if (struct_type == GC_THREAD) | |
149 | return (unsigned char *)sbi->gc_thread; | |
150 | else if (struct_type == SM_INFO) | |
151 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
152 | else if (struct_type == NM_INFO) |
153 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
154 | else if (struct_type == F2FS_SBI) |
155 | return (unsigned char *)sbi; | |
08796897 SY |
156 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
157 | else if (struct_type == FAULT_INFO_RATE || | |
158 | struct_type == FAULT_INFO_TYPE) | |
159 | return (unsigned char *)&f2fs_fault; | |
160 | #endif | |
ea91e9b0 JK |
161 | return NULL; |
162 | } | |
163 | ||
8f1dbbbb SL |
164 | static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
165 | struct f2fs_sb_info *sbi, char *buf) | |
166 | { | |
167 | struct super_block *sb = sbi->sb; | |
168 | ||
169 | if (!sb->s_bdev->bd_part) | |
170 | return snprintf(buf, PAGE_SIZE, "0\n"); | |
171 | ||
172 | return snprintf(buf, PAGE_SIZE, "%llu\n", | |
173 | (unsigned long long)(sbi->kbytes_written + | |
174 | BD_PART_WRITTEN(sbi))); | |
175 | } | |
176 | ||
b59d0bae NJ |
177 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
178 | struct f2fs_sb_info *sbi, char *buf) | |
179 | { | |
ea91e9b0 | 180 | unsigned char *ptr = NULL; |
b59d0bae NJ |
181 | unsigned int *ui; |
182 | ||
ea91e9b0 JK |
183 | ptr = __struct_ptr(sbi, a->struct_type); |
184 | if (!ptr) | |
b59d0bae NJ |
185 | return -EINVAL; |
186 | ||
ea91e9b0 | 187 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
188 | |
189 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
190 | } | |
191 | ||
192 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
193 | struct f2fs_sb_info *sbi, | |
194 | const char *buf, size_t count) | |
195 | { | |
ea91e9b0 | 196 | unsigned char *ptr; |
b59d0bae NJ |
197 | unsigned long t; |
198 | unsigned int *ui; | |
199 | ssize_t ret; | |
200 | ||
ea91e9b0 JK |
201 | ptr = __struct_ptr(sbi, a->struct_type); |
202 | if (!ptr) | |
b59d0bae NJ |
203 | return -EINVAL; |
204 | ||
ea91e9b0 | 205 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
206 | |
207 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
208 | if (ret < 0) | |
209 | return ret; | |
08796897 SY |
210 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
211 | if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) | |
212 | return -EINVAL; | |
213 | #endif | |
b59d0bae NJ |
214 | *ui = t; |
215 | return count; | |
216 | } | |
217 | ||
218 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
219 | struct attribute *attr, char *buf) | |
220 | { | |
221 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
222 | s_kobj); | |
223 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
224 | ||
225 | return a->show ? a->show(a, sbi, buf) : 0; | |
226 | } | |
227 | ||
228 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
229 | const char *buf, size_t len) | |
230 | { | |
231 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
232 | s_kobj); | |
233 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
234 | ||
235 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
236 | } | |
237 | ||
238 | static void f2fs_sb_release(struct kobject *kobj) | |
239 | { | |
240 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
241 | s_kobj); | |
242 | complete(&sbi->s_kobj_unregister); | |
243 | } | |
244 | ||
ea91e9b0 | 245 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
246 | static struct f2fs_attr f2fs_attr_##_name = { \ |
247 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
248 | .show = _show, \ | |
249 | .store = _store, \ | |
ea91e9b0 JK |
250 | .struct_type = _struct_type, \ |
251 | .offset = _offset \ | |
b59d0bae NJ |
252 | } |
253 | ||
ea91e9b0 JK |
254 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
255 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
256 | f2fs_sbi_show, f2fs_sbi_store, \ | |
257 | offsetof(struct struct_name, elname)) | |
b59d0bae | 258 | |
8f1dbbbb SL |
259 | #define F2FS_GENERAL_RO_ATTR(name) \ |
260 | static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) | |
261 | ||
ea91e9b0 JK |
262 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
263 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
264 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
265 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
266 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 267 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 268 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
269 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
270 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 271 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 272 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
ea1a29a0 | 273 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
2304cb0c | 274 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
b1c57c1c | 275 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 276 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
6beceb54 | 277 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
d0239e1b | 278 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
08796897 SY |
279 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
280 | F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); | |
281 | F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); | |
282 | #endif | |
8f1dbbbb | 283 | F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
b59d0bae NJ |
284 | |
285 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
286 | static struct attribute *f2fs_attrs[] = { | |
287 | ATTR_LIST(gc_min_sleep_time), | |
288 | ATTR_LIST(gc_max_sleep_time), | |
289 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 290 | ATTR_LIST(gc_idle), |
ea91e9b0 | 291 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 292 | ATTR_LIST(max_small_discards), |
bba681cb | 293 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
294 | ATTR_LIST(ipu_policy), |
295 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 296 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 297 | ATTR_LIST(max_victim_search), |
ab9fa662 | 298 | ATTR_LIST(dir_level), |
cdfc41c1 | 299 | ATTR_LIST(ram_thresh), |
ea1a29a0 | 300 | ATTR_LIST(ra_nid_pages), |
2304cb0c | 301 | ATTR_LIST(dirty_nats_ratio), |
60b99b48 | 302 | ATTR_LIST(cp_interval), |
d0239e1b | 303 | ATTR_LIST(idle_interval), |
8f1dbbbb | 304 | ATTR_LIST(lifetime_write_kbytes), |
b59d0bae NJ |
305 | NULL, |
306 | }; | |
307 | ||
308 | static const struct sysfs_ops f2fs_attr_ops = { | |
309 | .show = f2fs_attr_show, | |
310 | .store = f2fs_attr_store, | |
311 | }; | |
312 | ||
313 | static struct kobj_type f2fs_ktype = { | |
314 | .default_attrs = f2fs_attrs, | |
315 | .sysfs_ops = &f2fs_attr_ops, | |
316 | .release = f2fs_sb_release, | |
317 | }; | |
318 | ||
08796897 SY |
319 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
320 | /* sysfs for f2fs fault injection */ | |
321 | static struct kobject f2fs_fault_inject; | |
322 | ||
323 | static struct attribute *f2fs_fault_attrs[] = { | |
324 | ATTR_LIST(inject_rate), | |
325 | ATTR_LIST(inject_type), | |
326 | NULL | |
327 | }; | |
328 | ||
329 | static struct kobj_type f2fs_fault_ktype = { | |
330 | .default_attrs = f2fs_fault_attrs, | |
331 | .sysfs_ops = &f2fs_attr_ops, | |
332 | }; | |
333 | #endif | |
334 | ||
a07ef784 NJ |
335 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
336 | { | |
337 | struct va_format vaf; | |
338 | va_list args; | |
339 | ||
340 | va_start(args, fmt); | |
341 | vaf.fmt = fmt; | |
342 | vaf.va = &args; | |
343 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
344 | va_end(args); | |
345 | } | |
346 | ||
aff063e2 JK |
347 | static void init_once(void *foo) |
348 | { | |
349 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
350 | ||
aff063e2 JK |
351 | inode_init_once(&fi->vfs_inode); |
352 | } | |
353 | ||
696c018c NJ |
354 | static int parse_options(struct super_block *sb, char *options) |
355 | { | |
356 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 357 | struct request_queue *q; |
696c018c NJ |
358 | substring_t args[MAX_OPT_ARGS]; |
359 | char *p, *name; | |
360 | int arg = 0; | |
361 | ||
73faec4d | 362 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
08796897 | 363 | f2fs_build_fault_attr(0); |
73faec4d | 364 | #endif |
08796897 | 365 | |
696c018c NJ |
366 | if (!options) |
367 | return 0; | |
368 | ||
369 | while ((p = strsep(&options, ",")) != NULL) { | |
370 | int token; | |
371 | if (!*p) | |
372 | continue; | |
373 | /* | |
374 | * Initialize args struct so we know whether arg was | |
375 | * found; some options take optional arguments. | |
376 | */ | |
377 | args[0].to = args[0].from = NULL; | |
378 | token = match_token(p, f2fs_tokens, args); | |
379 | ||
380 | switch (token) { | |
381 | case Opt_gc_background: | |
382 | name = match_strdup(&args[0]); | |
383 | ||
384 | if (!name) | |
385 | return -ENOMEM; | |
6aefd93b | 386 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 387 | set_opt(sbi, BG_GC); |
6aefd93b JK |
388 | clear_opt(sbi, FORCE_FG_GC); |
389 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 390 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
391 | clear_opt(sbi, FORCE_FG_GC); |
392 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
393 | set_opt(sbi, BG_GC); | |
394 | set_opt(sbi, FORCE_FG_GC); | |
395 | } else { | |
696c018c NJ |
396 | kfree(name); |
397 | return -EINVAL; | |
398 | } | |
399 | kfree(name); | |
400 | break; | |
401 | case Opt_disable_roll_forward: | |
402 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
403 | break; | |
2d834bf9 JK |
404 | case Opt_norecovery: |
405 | /* this option mounts f2fs with ro */ | |
406 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
407 | if (!f2fs_readonly(sb)) | |
408 | return -EINVAL; | |
409 | break; | |
696c018c | 410 | case Opt_discard: |
09d54cdd CY |
411 | q = bdev_get_queue(sb->s_bdev); |
412 | if (blk_queue_discard(q)) { | |
413 | set_opt(sbi, DISCARD); | |
414 | } else { | |
415 | f2fs_msg(sb, KERN_WARNING, | |
416 | "mounting with \"discard\" option, but " | |
417 | "the device does not support discard"); | |
418 | } | |
696c018c NJ |
419 | break; |
420 | case Opt_noheap: | |
421 | set_opt(sbi, NOHEAP); | |
422 | break; | |
423 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
424 | case Opt_user_xattr: |
425 | set_opt(sbi, XATTR_USER); | |
426 | break; | |
696c018c NJ |
427 | case Opt_nouser_xattr: |
428 | clear_opt(sbi, XATTR_USER); | |
429 | break; | |
444c580f JK |
430 | case Opt_inline_xattr: |
431 | set_opt(sbi, INLINE_XATTR); | |
432 | break; | |
696c018c | 433 | #else |
4058c511 KA |
434 | case Opt_user_xattr: |
435 | f2fs_msg(sb, KERN_INFO, | |
436 | "user_xattr options not supported"); | |
437 | break; | |
696c018c NJ |
438 | case Opt_nouser_xattr: |
439 | f2fs_msg(sb, KERN_INFO, | |
440 | "nouser_xattr options not supported"); | |
441 | break; | |
444c580f JK |
442 | case Opt_inline_xattr: |
443 | f2fs_msg(sb, KERN_INFO, | |
444 | "inline_xattr options not supported"); | |
445 | break; | |
696c018c NJ |
446 | #endif |
447 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
448 | case Opt_acl: |
449 | set_opt(sbi, POSIX_ACL); | |
450 | break; | |
696c018c NJ |
451 | case Opt_noacl: |
452 | clear_opt(sbi, POSIX_ACL); | |
453 | break; | |
454 | #else | |
4058c511 KA |
455 | case Opt_acl: |
456 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
457 | break; | |
696c018c NJ |
458 | case Opt_noacl: |
459 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
460 | break; | |
461 | #endif | |
462 | case Opt_active_logs: | |
463 | if (args->from && match_int(args, &arg)) | |
464 | return -EINVAL; | |
465 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
466 | return -EINVAL; | |
467 | sbi->active_logs = arg; | |
468 | break; | |
469 | case Opt_disable_ext_identify: | |
470 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
471 | break; | |
8274de77 HL |
472 | case Opt_inline_data: |
473 | set_opt(sbi, INLINE_DATA); | |
474 | break; | |
5efd3c6f CY |
475 | case Opt_inline_dentry: |
476 | set_opt(sbi, INLINE_DENTRY); | |
477 | break; | |
6b4afdd7 JK |
478 | case Opt_flush_merge: |
479 | set_opt(sbi, FLUSH_MERGE); | |
480 | break; | |
0f7b2abd JK |
481 | case Opt_nobarrier: |
482 | set_opt(sbi, NOBARRIER); | |
483 | break; | |
d5053a34 JK |
484 | case Opt_fastboot: |
485 | set_opt(sbi, FASTBOOT); | |
486 | break; | |
89672159 CY |
487 | case Opt_extent_cache: |
488 | set_opt(sbi, EXTENT_CACHE); | |
489 | break; | |
7daaea25 JK |
490 | case Opt_noextent_cache: |
491 | clear_opt(sbi, EXTENT_CACHE); | |
492 | break; | |
75342797 WL |
493 | case Opt_noinline_data: |
494 | clear_opt(sbi, INLINE_DATA); | |
495 | break; | |
343f40f0 CY |
496 | case Opt_data_flush: |
497 | set_opt(sbi, DATA_FLUSH); | |
498 | break; | |
73faec4d JK |
499 | case Opt_fault_injection: |
500 | if (args->from && match_int(args, &arg)) | |
501 | return -EINVAL; | |
502 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
08796897 | 503 | f2fs_build_fault_attr(arg); |
73faec4d JK |
504 | #else |
505 | f2fs_msg(sb, KERN_INFO, | |
506 | "FAULT_INJECTION was not selected"); | |
507 | #endif | |
508 | break; | |
696c018c NJ |
509 | default: |
510 | f2fs_msg(sb, KERN_ERR, | |
511 | "Unrecognized mount option \"%s\" or missing value", | |
512 | p); | |
513 | return -EINVAL; | |
514 | } | |
515 | } | |
516 | return 0; | |
517 | } | |
518 | ||
aff063e2 JK |
519 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
520 | { | |
521 | struct f2fs_inode_info *fi; | |
522 | ||
a0acdfe0 | 523 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
524 | if (!fi) |
525 | return NULL; | |
526 | ||
527 | init_once((void *) fi); | |
528 | ||
1beba1b3 JK |
529 | if (percpu_counter_init(&fi->dirty_pages, 0, GFP_NOFS)) { |
530 | kmem_cache_free(f2fs_inode_cachep, fi); | |
531 | return NULL; | |
532 | } | |
533 | ||
434720fa | 534 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 535 | fi->vfs_inode.i_version = 1; |
aff063e2 JK |
536 | fi->i_current_depth = 1; |
537 | fi->i_advise = 0; | |
d928bfbf | 538 | init_rwsem(&fi->i_sem); |
2710fd7e | 539 | INIT_LIST_HEAD(&fi->dirty_list); |
88b88a66 JK |
540 | INIT_LIST_HEAD(&fi->inmem_pages); |
541 | mutex_init(&fi->inmem_lock); | |
aff063e2 JK |
542 | |
543 | set_inode_flag(fi, FI_NEW_INODE); | |
544 | ||
444c580f JK |
545 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
546 | set_inode_flag(fi, FI_INLINE_XATTR); | |
547 | ||
ab9fa662 JK |
548 | /* Will be used by directory only */ |
549 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
aff063e2 JK |
550 | return &fi->vfs_inode; |
551 | } | |
552 | ||
531ad7d5 JK |
553 | static int f2fs_drop_inode(struct inode *inode) |
554 | { | |
555 | /* | |
556 | * This is to avoid a deadlock condition like below. | |
557 | * writeback_single_inode(inode) | |
558 | * - f2fs_write_data_page | |
559 | * - f2fs_gc -> iput -> evict | |
560 | * - inode_wait_for_writeback(inode) | |
561 | */ | |
06e1bc05 JK |
562 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
563 | if (!inode->i_nlink && !is_bad_inode(inode)) { | |
3e72f721 JK |
564 | /* to avoid evict_inode call simultaneously */ |
565 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
566 | spin_unlock(&inode->i_lock); |
567 | ||
568 | /* some remained atomic pages should discarded */ | |
569 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 570 | drop_inmem_pages(inode); |
06e1bc05 | 571 | |
3e72f721 JK |
572 | /* should remain fi->extent_tree for writepage */ |
573 | f2fs_destroy_extent_node(inode); | |
574 | ||
06e1bc05 JK |
575 | sb_start_intwrite(inode->i_sb); |
576 | i_size_write(inode, 0); | |
577 | ||
578 | if (F2FS_HAS_BLOCKS(inode)) | |
55f57d2c | 579 | f2fs_truncate(inode, true); |
06e1bc05 JK |
580 | |
581 | sb_end_intwrite(inode->i_sb); | |
582 | ||
0b81d077 | 583 | fscrypt_put_encryption_info(inode, NULL); |
06e1bc05 | 584 | spin_lock(&inode->i_lock); |
3e72f721 | 585 | atomic_dec(&inode->i_count); |
06e1bc05 | 586 | } |
531ad7d5 | 587 | return 0; |
06e1bc05 | 588 | } |
531ad7d5 JK |
589 | return generic_drop_inode(inode); |
590 | } | |
591 | ||
b3783873 JK |
592 | /* |
593 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
594 | * | |
595 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
596 | */ | |
597 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
598 | { | |
599 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); | |
b3783873 JK |
600 | } |
601 | ||
aff063e2 JK |
602 | static void f2fs_i_callback(struct rcu_head *head) |
603 | { | |
604 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
605 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
606 | } | |
607 | ||
25ca923b | 608 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 | 609 | { |
1beba1b3 | 610 | percpu_counter_destroy(&F2FS_I(inode)->dirty_pages); |
aff063e2 JK |
611 | call_rcu(&inode->i_rcu, f2fs_i_callback); |
612 | } | |
613 | ||
523be8a6 JK |
614 | static void destroy_percpu_info(struct f2fs_sb_info *sbi) |
615 | { | |
616 | int i; | |
617 | ||
618 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
619 | percpu_counter_destroy(&sbi->nr_pages[i]); | |
41382ec4 | 620 | percpu_counter_destroy(&sbi->alloc_valid_block_count); |
513c5f37 | 621 | percpu_counter_destroy(&sbi->total_valid_inode_count); |
523be8a6 JK |
622 | } |
623 | ||
aff063e2 JK |
624 | static void f2fs_put_super(struct super_block *sb) |
625 | { | |
626 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
627 | ||
5e176d54 JK |
628 | if (sbi->s_proc) { |
629 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 630 | remove_proc_entry("segment_bits", sbi->s_proc); |
5e176d54 JK |
631 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
632 | } | |
b59d0bae | 633 | kobject_del(&sbi->s_kobj); |
5e176d54 | 634 | |
aff063e2 JK |
635 | stop_gc_thread(sbi); |
636 | ||
2658e50d JK |
637 | /* prevent remaining shrinker jobs */ |
638 | mutex_lock(&sbi->umount_mutex); | |
639 | ||
85dc2f2c JK |
640 | /* |
641 | * We don't need to do checkpoint when superblock is clean. | |
642 | * But, the previous checkpoint was not done by umount, it needs to do | |
643 | * clean checkpoint again. | |
644 | */ | |
caf0047e | 645 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
85dc2f2c | 646 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
647 | struct cp_control cpc = { |
648 | .reason = CP_UMOUNT, | |
649 | }; | |
650 | write_checkpoint(sbi, &cpc); | |
651 | } | |
aff063e2 | 652 | |
eca616f8 JK |
653 | /* write_checkpoint can update stat informaion */ |
654 | f2fs_destroy_stats(sbi); | |
655 | ||
cf779cab JK |
656 | /* |
657 | * normally superblock is clean, so we need to release this. | |
658 | * In addition, EIO will skip do checkpoint, we need this as well. | |
659 | */ | |
74ef9241 | 660 | release_ino_entry(sbi, true); |
4b2fecc8 | 661 | release_discard_addrs(sbi); |
6f12ac25 | 662 | |
2658e50d JK |
663 | f2fs_leave_shrinker(sbi); |
664 | mutex_unlock(&sbi->umount_mutex); | |
665 | ||
17c19120 | 666 | /* our cp_error case, we can wait for any writeback page */ |
f5730184 | 667 | f2fs_flush_merged_bios(sbi); |
17c19120 | 668 | |
aff063e2 JK |
669 | iput(sbi->node_inode); |
670 | iput(sbi->meta_inode); | |
671 | ||
672 | /* destroy f2fs internal modules */ | |
673 | destroy_node_manager(sbi); | |
674 | destroy_segment_manager(sbi); | |
675 | ||
676 | kfree(sbi->ckpt); | |
b59d0bae NJ |
677 | kobject_put(&sbi->s_kobj); |
678 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
679 | |
680 | sb->s_fs_info = NULL; | |
43b6573b KM |
681 | if (sbi->s_chksum_driver) |
682 | crypto_free_shash(sbi->s_chksum_driver); | |
b39f0de2 | 683 | kfree(sbi->raw_super); |
523be8a6 JK |
684 | |
685 | destroy_percpu_info(sbi); | |
aff063e2 JK |
686 | kfree(sbi); |
687 | } | |
688 | ||
689 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
690 | { | |
691 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 692 | int err = 0; |
aff063e2 | 693 | |
a2a4a7e4 NJ |
694 | trace_f2fs_sync_fs(sb, sync); |
695 | ||
b7473754 | 696 | if (sync) { |
d5053a34 JK |
697 | struct cp_control cpc; |
698 | ||
119ee914 JK |
699 | cpc.reason = __get_cp_reason(sbi); |
700 | ||
b7473754 | 701 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 702 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 703 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 704 | } |
05ca3632 | 705 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 706 | |
c34f42e2 | 707 | return err; |
aff063e2 JK |
708 | } |
709 | ||
d6212a5f CL |
710 | static int f2fs_freeze(struct super_block *sb) |
711 | { | |
712 | int err; | |
713 | ||
77888c1e | 714 | if (f2fs_readonly(sb)) |
d6212a5f CL |
715 | return 0; |
716 | ||
717 | err = f2fs_sync_fs(sb, 1); | |
718 | return err; | |
719 | } | |
720 | ||
721 | static int f2fs_unfreeze(struct super_block *sb) | |
722 | { | |
723 | return 0; | |
724 | } | |
725 | ||
aff063e2 JK |
726 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
727 | { | |
728 | struct super_block *sb = dentry->d_sb; | |
729 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
730 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
731 | block_t total_count, user_block_count, start_count, ovp_count; | |
732 | ||
733 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
734 | user_block_count = sbi->user_block_count; | |
735 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
736 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
737 | buf->f_type = F2FS_SUPER_MAGIC; | |
738 | buf->f_bsize = sbi->blocksize; | |
739 | ||
740 | buf->f_blocks = total_count - start_count; | |
741 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; | |
742 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); | |
743 | ||
c200b1aa CY |
744 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
745 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 746 | |
5a20d339 | 747 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
748 | buf->f_fsid.val[0] = (u32)id; |
749 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
750 | ||
751 | return 0; | |
752 | } | |
753 | ||
754 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
755 | { | |
756 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
757 | ||
6aefd93b JK |
758 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
759 | if (test_opt(sbi, FORCE_FG_GC)) | |
760 | seq_printf(seq, ",background_gc=%s", "sync"); | |
761 | else | |
762 | seq_printf(seq, ",background_gc=%s", "on"); | |
763 | } else { | |
696c018c | 764 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 765 | } |
aff063e2 JK |
766 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
767 | seq_puts(seq, ",disable_roll_forward"); | |
768 | if (test_opt(sbi, DISCARD)) | |
769 | seq_puts(seq, ",discard"); | |
770 | if (test_opt(sbi, NOHEAP)) | |
771 | seq_puts(seq, ",no_heap_alloc"); | |
772 | #ifdef CONFIG_F2FS_FS_XATTR | |
773 | if (test_opt(sbi, XATTR_USER)) | |
774 | seq_puts(seq, ",user_xattr"); | |
775 | else | |
776 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
777 | if (test_opt(sbi, INLINE_XATTR)) |
778 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
779 | #endif |
780 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
781 | if (test_opt(sbi, POSIX_ACL)) | |
782 | seq_puts(seq, ",acl"); | |
783 | else | |
784 | seq_puts(seq, ",noacl"); | |
785 | #endif | |
786 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 787 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
788 | if (test_opt(sbi, INLINE_DATA)) |
789 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
790 | else |
791 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
792 | if (test_opt(sbi, INLINE_DENTRY)) |
793 | seq_puts(seq, ",inline_dentry"); | |
b270ad6f | 794 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 795 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
796 | if (test_opt(sbi, NOBARRIER)) |
797 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
798 | if (test_opt(sbi, FASTBOOT)) |
799 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
800 | if (test_opt(sbi, EXTENT_CACHE)) |
801 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
802 | else |
803 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
804 | if (test_opt(sbi, DATA_FLUSH)) |
805 | seq_puts(seq, ",data_flush"); | |
aff063e2 JK |
806 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
807 | ||
808 | return 0; | |
809 | } | |
810 | ||
5e176d54 JK |
811 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
812 | { | |
813 | struct super_block *sb = seq->private; | |
814 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
815 | unsigned int total_segs = |
816 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
817 | int i; |
818 | ||
90aa6dc9 CY |
819 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
820 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
821 | ||
5e176d54 | 822 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
823 | struct seg_entry *se = get_seg_entry(sbi, i); |
824 | ||
825 | if ((i % 10) == 0) | |
01a5ad82 | 826 | seq_printf(seq, "%-10d", i); |
90aa6dc9 CY |
827 | seq_printf(seq, "%d|%-3u", se->type, |
828 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
829 | if ((i % 10) == 9 || i == (total_segs - 1)) |
830 | seq_putc(seq, '\n'); | |
5e176d54 | 831 | else |
46c04366 | 832 | seq_putc(seq, ' '); |
5e176d54 | 833 | } |
46c04366 | 834 | |
5e176d54 JK |
835 | return 0; |
836 | } | |
837 | ||
f00d6fa7 JK |
838 | static int segment_bits_seq_show(struct seq_file *seq, void *offset) |
839 | { | |
840 | struct super_block *sb = seq->private; | |
841 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
842 | unsigned int total_segs = | |
843 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
844 | int i, j; | |
845 | ||
846 | seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" | |
847 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
848 | ||
849 | for (i = 0; i < total_segs; i++) { | |
850 | struct seg_entry *se = get_seg_entry(sbi, i); | |
851 | ||
852 | seq_printf(seq, "%-10d", i); | |
853 | seq_printf(seq, "%d|%-3u|", se->type, | |
854 | get_valid_blocks(sbi, i, 1)); | |
855 | for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) | |
856 | seq_printf(seq, "%x ", se->cur_valid_map[j]); | |
857 | seq_putc(seq, '\n'); | |
858 | } | |
859 | return 0; | |
860 | } | |
861 | ||
b7a15f3d JK |
862 | #define F2FS_PROC_FILE_DEF(_name) \ |
863 | static int _name##_open_fs(struct inode *inode, struct file *file) \ | |
864 | { \ | |
865 | return single_open(file, _name##_seq_show, PDE_DATA(inode)); \ | |
866 | } \ | |
867 | \ | |
868 | static const struct file_operations f2fs_seq_##_name##_fops = { \ | |
869 | .owner = THIS_MODULE, \ | |
870 | .open = _name##_open_fs, \ | |
871 | .read = seq_read, \ | |
872 | .llseek = seq_lseek, \ | |
873 | .release = single_release, \ | |
5e176d54 JK |
874 | }; |
875 | ||
b7a15f3d | 876 | F2FS_PROC_FILE_DEF(segment_info); |
f00d6fa7 | 877 | F2FS_PROC_FILE_DEF(segment_bits); |
b7a15f3d | 878 | |
498c5e9f YH |
879 | static void default_options(struct f2fs_sb_info *sbi) |
880 | { | |
881 | /* init some FS parameters */ | |
882 | sbi->active_logs = NR_CURSEG_TYPE; | |
883 | ||
884 | set_opt(sbi, BG_GC); | |
885 | set_opt(sbi, INLINE_DATA); | |
3e72f721 | 886 | set_opt(sbi, EXTENT_CACHE); |
498c5e9f YH |
887 | |
888 | #ifdef CONFIG_F2FS_FS_XATTR | |
889 | set_opt(sbi, XATTR_USER); | |
890 | #endif | |
891 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
892 | set_opt(sbi, POSIX_ACL); | |
893 | #endif | |
894 | } | |
895 | ||
696c018c NJ |
896 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
897 | { | |
898 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
899 | struct f2fs_mount_info org_mount_opt; | |
900 | int err, active_logs; | |
876dc59e GZ |
901 | bool need_restart_gc = false; |
902 | bool need_stop_gc = false; | |
9cd81ce3 | 903 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
696c018c NJ |
904 | |
905 | /* | |
906 | * Save the old mount options in case we | |
907 | * need to restore them. | |
908 | */ | |
909 | org_mount_opt = sbi->mount_opt; | |
910 | active_logs = sbi->active_logs; | |
911 | ||
df728b0f JK |
912 | /* recover superblocks we couldn't write due to previous RO mount */ |
913 | if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { | |
914 | err = f2fs_commit_super(sbi, false); | |
915 | f2fs_msg(sb, KERN_INFO, | |
916 | "Try to recover all the superblocks, ret: %d", err); | |
917 | if (!err) | |
918 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
919 | } | |
920 | ||
26666c8a | 921 | sbi->mount_opt.opt = 0; |
498c5e9f | 922 | default_options(sbi); |
26666c8a | 923 | |
696c018c NJ |
924 | /* parse mount options */ |
925 | err = parse_options(sb, data); | |
926 | if (err) | |
927 | goto restore_opts; | |
928 | ||
929 | /* | |
930 | * Previous and new state of filesystem is RO, | |
876dc59e | 931 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 932 | */ |
6b2920a5 | 933 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
934 | goto skip; |
935 | ||
9cd81ce3 CY |
936 | /* disallow enable/disable extent_cache dynamically */ |
937 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
938 | err = -EINVAL; | |
939 | f2fs_msg(sbi->sb, KERN_WARNING, | |
940 | "switch extent_cache option is not allowed"); | |
941 | goto restore_opts; | |
942 | } | |
943 | ||
696c018c NJ |
944 | /* |
945 | * We stop the GC thread if FS is mounted as RO | |
946 | * or if background_gc = off is passed in mount | |
947 | * option. Also sync the filesystem. | |
948 | */ | |
949 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
950 | if (sbi->gc_thread) { | |
951 | stop_gc_thread(sbi); | |
876dc59e | 952 | need_restart_gc = true; |
696c018c | 953 | } |
aba291b3 | 954 | } else if (!sbi->gc_thread) { |
696c018c NJ |
955 | err = start_gc_thread(sbi); |
956 | if (err) | |
957 | goto restore_opts; | |
876dc59e GZ |
958 | need_stop_gc = true; |
959 | } | |
960 | ||
faa0e55b JK |
961 | if (*flags & MS_RDONLY) { |
962 | writeback_inodes_sb(sb, WB_REASON_SYNC); | |
963 | sync_inodes_sb(sb); | |
964 | ||
965 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
966 | set_sbi_flag(sbi, SBI_IS_CLOSE); | |
967 | f2fs_sync_fs(sb, 1); | |
968 | clear_sbi_flag(sbi, SBI_IS_CLOSE); | |
969 | } | |
970 | ||
876dc59e GZ |
971 | /* |
972 | * We stop issue flush thread if FS is mounted as RO | |
973 | * or if flush_merge is not passed in mount option. | |
974 | */ | |
975 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 976 | destroy_flush_cmd_control(sbi); |
aba291b3 | 977 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
978 | err = create_flush_cmd_control(sbi); |
979 | if (err) | |
a688b9d9 | 980 | goto restore_gc; |
696c018c NJ |
981 | } |
982 | skip: | |
983 | /* Update the POSIXACL Flag */ | |
df728b0f | 984 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
696c018c | 985 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
df728b0f | 986 | |
696c018c | 987 | return 0; |
876dc59e GZ |
988 | restore_gc: |
989 | if (need_restart_gc) { | |
990 | if (start_gc_thread(sbi)) | |
991 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 992 | "background gc thread has stopped"); |
876dc59e GZ |
993 | } else if (need_stop_gc) { |
994 | stop_gc_thread(sbi); | |
995 | } | |
696c018c NJ |
996 | restore_opts: |
997 | sbi->mount_opt = org_mount_opt; | |
998 | sbi->active_logs = active_logs; | |
999 | return err; | |
1000 | } | |
1001 | ||
aff063e2 JK |
1002 | static struct super_operations f2fs_sops = { |
1003 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 1004 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
1005 | .destroy_inode = f2fs_destroy_inode, |
1006 | .write_inode = f2fs_write_inode, | |
b3783873 | 1007 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
1008 | .show_options = f2fs_show_options, |
1009 | .evict_inode = f2fs_evict_inode, | |
1010 | .put_super = f2fs_put_super, | |
1011 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
1012 | .freeze_fs = f2fs_freeze, |
1013 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 1014 | .statfs = f2fs_statfs, |
696c018c | 1015 | .remount_fs = f2fs_remount, |
aff063e2 JK |
1016 | }; |
1017 | ||
0b81d077 JK |
1018 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
1019 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) | |
1020 | { | |
1021 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
1022 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
1023 | ctx, len, NULL); | |
1024 | } | |
1025 | ||
b5a7aef1 JK |
1026 | static int f2fs_key_prefix(struct inode *inode, u8 **key) |
1027 | { | |
1028 | *key = F2FS_I_SB(inode)->key_prefix; | |
1029 | return F2FS_I_SB(inode)->key_prefix_size; | |
1030 | } | |
1031 | ||
0b81d077 JK |
1032 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, |
1033 | void *fs_data) | |
1034 | { | |
1035 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
1036 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
1037 | ctx, len, fs_data, XATTR_CREATE); | |
1038 | } | |
1039 | ||
1040 | static unsigned f2fs_max_namelen(struct inode *inode) | |
1041 | { | |
1042 | return S_ISLNK(inode->i_mode) ? | |
1043 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; | |
1044 | } | |
1045 | ||
1046 | static struct fscrypt_operations f2fs_cryptops = { | |
1047 | .get_context = f2fs_get_context, | |
b5a7aef1 | 1048 | .key_prefix = f2fs_key_prefix, |
0b81d077 JK |
1049 | .set_context = f2fs_set_context, |
1050 | .is_encrypted = f2fs_encrypted_inode, | |
1051 | .empty_dir = f2fs_empty_dir, | |
1052 | .max_namelen = f2fs_max_namelen, | |
1053 | }; | |
1054 | #else | |
1055 | static struct fscrypt_operations f2fs_cryptops = { | |
1056 | .is_encrypted = f2fs_encrypted_inode, | |
1057 | }; | |
1058 | #endif | |
1059 | ||
aff063e2 JK |
1060 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
1061 | u64 ino, u32 generation) | |
1062 | { | |
1063 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
1064 | struct inode *inode; | |
1065 | ||
d6b7d4b3 | 1066 | if (check_nid_range(sbi, ino)) |
910bb12d | 1067 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
1068 | |
1069 | /* | |
1070 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
1071 | * However f2fs_iget currently does appropriate checks to handle stale | |
1072 | * inodes so everything is OK. | |
1073 | */ | |
1074 | inode = f2fs_iget(sb, ino); | |
1075 | if (IS_ERR(inode)) | |
1076 | return ERR_CAST(inode); | |
6bacf52f | 1077 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
1078 | /* we didn't find the right inode.. */ |
1079 | iput(inode); | |
1080 | return ERR_PTR(-ESTALE); | |
1081 | } | |
1082 | return inode; | |
1083 | } | |
1084 | ||
1085 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
1086 | int fh_len, int fh_type) | |
1087 | { | |
1088 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
1089 | f2fs_nfs_get_inode); | |
1090 | } | |
1091 | ||
1092 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
1093 | int fh_len, int fh_type) | |
1094 | { | |
1095 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
1096 | f2fs_nfs_get_inode); | |
1097 | } | |
1098 | ||
1099 | static const struct export_operations f2fs_export_ops = { | |
1100 | .fh_to_dentry = f2fs_fh_to_dentry, | |
1101 | .fh_to_parent = f2fs_fh_to_parent, | |
1102 | .get_parent = f2fs_get_parent, | |
1103 | }; | |
1104 | ||
e0afc4d6 | 1105 | static loff_t max_file_blocks(void) |
aff063e2 | 1106 | { |
de93653f | 1107 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
1108 | loff_t leaf_count = ADDRS_PER_BLOCK; |
1109 | ||
1110 | /* two direct node blocks */ | |
1111 | result += (leaf_count * 2); | |
1112 | ||
1113 | /* two indirect node blocks */ | |
1114 | leaf_count *= NIDS_PER_BLOCK; | |
1115 | result += (leaf_count * 2); | |
1116 | ||
1117 | /* one double indirect node block */ | |
1118 | leaf_count *= NIDS_PER_BLOCK; | |
1119 | result += leaf_count; | |
1120 | ||
aff063e2 JK |
1121 | return result; |
1122 | } | |
1123 | ||
fd694733 JK |
1124 | static int __f2fs_commit_super(struct buffer_head *bh, |
1125 | struct f2fs_super_block *super) | |
1126 | { | |
1127 | lock_buffer(bh); | |
1128 | if (super) | |
1129 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); | |
1130 | set_buffer_uptodate(bh); | |
1131 | set_buffer_dirty(bh); | |
1132 | unlock_buffer(bh); | |
1133 | ||
1134 | /* it's rare case, we can do fua all the time */ | |
1135 | return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); | |
1136 | } | |
1137 | ||
df728b0f | 1138 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
fd694733 | 1139 | struct buffer_head *bh) |
9a59b62f | 1140 | { |
fd694733 JK |
1141 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1142 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1143 | struct super_block *sb = sbi->sb; |
9a59b62f CY |
1144 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
1145 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
1146 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
1147 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
1148 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
1149 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
1150 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
1151 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
1152 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
1153 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
1154 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
1155 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
1156 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
fd694733 JK |
1157 | u64 main_end_blkaddr = main_blkaddr + |
1158 | (segment_count_main << log_blocks_per_seg); | |
1159 | u64 seg_end_blkaddr = segment0_blkaddr + | |
1160 | (segment_count << log_blocks_per_seg); | |
9a59b62f CY |
1161 | |
1162 | if (segment0_blkaddr != cp_blkaddr) { | |
1163 | f2fs_msg(sb, KERN_INFO, | |
1164 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
1165 | segment0_blkaddr, cp_blkaddr); | |
1166 | return true; | |
1167 | } | |
1168 | ||
1169 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
1170 | sit_blkaddr) { | |
1171 | f2fs_msg(sb, KERN_INFO, | |
1172 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
1173 | cp_blkaddr, sit_blkaddr, | |
1174 | segment_count_ckpt << log_blocks_per_seg); | |
1175 | return true; | |
1176 | } | |
1177 | ||
1178 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
1179 | nat_blkaddr) { | |
1180 | f2fs_msg(sb, KERN_INFO, | |
1181 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
1182 | sit_blkaddr, nat_blkaddr, | |
1183 | segment_count_sit << log_blocks_per_seg); | |
1184 | return true; | |
1185 | } | |
1186 | ||
1187 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
1188 | ssa_blkaddr) { | |
1189 | f2fs_msg(sb, KERN_INFO, | |
1190 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1191 | nat_blkaddr, ssa_blkaddr, | |
1192 | segment_count_nat << log_blocks_per_seg); | |
1193 | return true; | |
1194 | } | |
1195 | ||
1196 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1197 | main_blkaddr) { | |
1198 | f2fs_msg(sb, KERN_INFO, | |
1199 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1200 | ssa_blkaddr, main_blkaddr, | |
1201 | segment_count_ssa << log_blocks_per_seg); | |
1202 | return true; | |
1203 | } | |
1204 | ||
fd694733 | 1205 | if (main_end_blkaddr > seg_end_blkaddr) { |
9a59b62f | 1206 | f2fs_msg(sb, KERN_INFO, |
fd694733 | 1207 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
9a59b62f | 1208 | main_blkaddr, |
fd694733 JK |
1209 | segment0_blkaddr + |
1210 | (segment_count << log_blocks_per_seg), | |
9a59b62f CY |
1211 | segment_count_main << log_blocks_per_seg); |
1212 | return true; | |
fd694733 JK |
1213 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
1214 | int err = 0; | |
1215 | char *res; | |
1216 | ||
1217 | /* fix in-memory information all the time */ | |
1218 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - | |
1219 | segment0_blkaddr) >> log_blocks_per_seg); | |
1220 | ||
1221 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { | |
df728b0f | 1222 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
fd694733 JK |
1223 | res = "internally"; |
1224 | } else { | |
1225 | err = __f2fs_commit_super(bh, NULL); | |
1226 | res = err ? "failed" : "done"; | |
1227 | } | |
1228 | f2fs_msg(sb, KERN_INFO, | |
1229 | "Fix alignment : %s, start(%u) end(%u) block(%u)", | |
1230 | res, main_blkaddr, | |
1231 | segment0_blkaddr + | |
1232 | (segment_count << log_blocks_per_seg), | |
1233 | segment_count_main << log_blocks_per_seg); | |
1234 | if (err) | |
1235 | return true; | |
9a59b62f | 1236 | } |
9a59b62f CY |
1237 | return false; |
1238 | } | |
1239 | ||
df728b0f | 1240 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
fd694733 | 1241 | struct buffer_head *bh) |
aff063e2 | 1242 | { |
fd694733 JK |
1243 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1244 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1245 | struct super_block *sb = sbi->sb; |
aff063e2 JK |
1246 | unsigned int blocksize; |
1247 | ||
a07ef784 NJ |
1248 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1249 | f2fs_msg(sb, KERN_INFO, | |
1250 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1251 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1252 | return 1; |
a07ef784 | 1253 | } |
aff063e2 | 1254 | |
5c9b4692 | 1255 | /* Currently, support only 4KB page cache size */ |
09cbfeaf | 1256 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
5c9b4692 | 1257 | f2fs_msg(sb, KERN_INFO, |
14d7e9de | 1258 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
09cbfeaf | 1259 | PAGE_SIZE); |
5c9b4692 | 1260 | return 1; |
1261 | } | |
1262 | ||
aff063e2 JK |
1263 | /* Currently, support only 4KB block size */ |
1264 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1265 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1266 | f2fs_msg(sb, KERN_INFO, |
1267 | "Invalid blocksize (%u), supports only 4KB\n", | |
1268 | blocksize); | |
aff063e2 | 1269 | return 1; |
a07ef784 | 1270 | } |
5c9b4692 | 1271 | |
9a59b62f CY |
1272 | /* check log blocks per segment */ |
1273 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1274 | f2fs_msg(sb, KERN_INFO, | |
1275 | "Invalid log blocks per segment (%u)\n", | |
1276 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1277 | return 1; | |
1278 | } | |
1279 | ||
55cf9cb6 CY |
1280 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1281 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1282 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1283 | le32_to_cpu(raw_super->log_sectorsize) < | |
1284 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1285 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1286 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1287 | return 1; |
a07ef784 | 1288 | } |
55cf9cb6 CY |
1289 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1290 | le32_to_cpu(raw_super->log_sectorsize) != | |
1291 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1292 | f2fs_msg(sb, KERN_INFO, | |
1293 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1294 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1295 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1296 | return 1; |
a07ef784 | 1297 | } |
9a59b62f CY |
1298 | |
1299 | /* check reserved ino info */ | |
1300 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1301 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1302 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1303 | f2fs_msg(sb, KERN_INFO, | |
1304 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1305 | le32_to_cpu(raw_super->node_ino), | |
1306 | le32_to_cpu(raw_super->meta_ino), | |
1307 | le32_to_cpu(raw_super->root_ino)); | |
1308 | return 1; | |
1309 | } | |
1310 | ||
1311 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ | |
df728b0f | 1312 | if (sanity_check_area_boundary(sbi, bh)) |
9a59b62f CY |
1313 | return 1; |
1314 | ||
aff063e2 JK |
1315 | return 0; |
1316 | } | |
1317 | ||
984ec63c | 1318 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1319 | { |
1320 | unsigned int total, fsmeta; | |
577e3495 JK |
1321 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1322 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
1323 | |
1324 | total = le32_to_cpu(raw_super->segment_count); | |
1325 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1326 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1327 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1328 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1329 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1330 | ||
6bacf52f | 1331 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1332 | return 1; |
577e3495 | 1333 | |
1e968fdf | 1334 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1335 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1336 | return 1; | |
1337 | } | |
aff063e2 JK |
1338 | return 0; |
1339 | } | |
1340 | ||
1341 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1342 | { | |
1343 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
aff063e2 JK |
1344 | |
1345 | sbi->log_sectors_per_block = | |
1346 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1347 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1348 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1349 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1350 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1351 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1352 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1353 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1354 | sbi->total_node_count = | |
1355 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1356 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1357 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1358 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1359 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1360 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1361 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 | 1362 | |
ab9fa662 | 1363 | sbi->dir_level = DEF_DIR_LEVEL; |
6beceb54 | 1364 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1365 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1366 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d JK |
1367 | |
1368 | INIT_LIST_HEAD(&sbi->s_list); | |
1369 | mutex_init(&sbi->umount_mutex); | |
b5a7aef1 JK |
1370 | |
1371 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
1372 | memcpy(sbi->key_prefix, F2FS_KEY_DESC_PREFIX, | |
1373 | F2FS_KEY_DESC_PREFIX_SIZE); | |
1374 | sbi->key_prefix_size = F2FS_KEY_DESC_PREFIX_SIZE; | |
1375 | #endif | |
aff063e2 JK |
1376 | } |
1377 | ||
523be8a6 JK |
1378 | static int init_percpu_info(struct f2fs_sb_info *sbi) |
1379 | { | |
1380 | int i, err; | |
1381 | ||
1382 | for (i = 0; i < NR_COUNT_TYPE; i++) { | |
1383 | err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); | |
1384 | if (err) | |
1385 | return err; | |
1386 | } | |
41382ec4 | 1387 | |
513c5f37 JK |
1388 | err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); |
1389 | if (err) | |
1390 | return err; | |
1391 | ||
1392 | return percpu_counter_init(&sbi->total_valid_inode_count, 0, | |
41382ec4 | 1393 | GFP_KERNEL); |
523be8a6 JK |
1394 | } |
1395 | ||
9076a75f GZ |
1396 | /* |
1397 | * Read f2fs raw super block. | |
2b39e907 SL |
1398 | * Because we have two copies of super block, so read both of them |
1399 | * to get the first valid one. If any one of them is broken, we pass | |
1400 | * them recovery flag back to the caller. | |
9076a75f | 1401 | */ |
df728b0f | 1402 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
9076a75f | 1403 | struct f2fs_super_block **raw_super, |
e8240f65 | 1404 | int *valid_super_block, int *recovery) |
14d7e9de | 1405 | { |
df728b0f | 1406 | struct super_block *sb = sbi->sb; |
2b39e907 | 1407 | int block; |
e8240f65 | 1408 | struct buffer_head *bh; |
fd694733 | 1409 | struct f2fs_super_block *super; |
da554e48 | 1410 | int err = 0; |
14d7e9de | 1411 | |
b39f0de2 YH |
1412 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1413 | if (!super) | |
1414 | return -ENOMEM; | |
2b39e907 SL |
1415 | |
1416 | for (block = 0; block < 2; block++) { | |
1417 | bh = sb_bread(sb, block); | |
1418 | if (!bh) { | |
1419 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", | |
9076a75f | 1420 | block + 1); |
2b39e907 SL |
1421 | err = -EIO; |
1422 | continue; | |
1423 | } | |
14d7e9de | 1424 | |
2b39e907 | 1425 | /* sanity checking of raw super */ |
df728b0f | 1426 | if (sanity_check_raw_super(sbi, bh)) { |
2b39e907 SL |
1427 | f2fs_msg(sb, KERN_ERR, |
1428 | "Can't find valid F2FS filesystem in %dth superblock", | |
1429 | block + 1); | |
1430 | err = -EINVAL; | |
1431 | brelse(bh); | |
1432 | continue; | |
1433 | } | |
14d7e9de | 1434 | |
2b39e907 | 1435 | if (!*raw_super) { |
fd694733 JK |
1436 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
1437 | sizeof(*super)); | |
2b39e907 SL |
1438 | *valid_super_block = block; |
1439 | *raw_super = super; | |
1440 | } | |
1441 | brelse(bh); | |
da554e48 | 1442 | } |
1443 | ||
2b39e907 SL |
1444 | /* Fail to read any one of the superblocks*/ |
1445 | if (err < 0) | |
1446 | *recovery = 1; | |
da554e48 | 1447 | |
da554e48 | 1448 | /* No valid superblock */ |
2b39e907 | 1449 | if (!*raw_super) |
b39f0de2 | 1450 | kfree(super); |
2b39e907 SL |
1451 | else |
1452 | err = 0; | |
da554e48 | 1453 | |
2b39e907 | 1454 | return err; |
14d7e9de | 1455 | } |
1456 | ||
fd694733 | 1457 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad | 1458 | { |
5d909cdb | 1459 | struct buffer_head *bh; |
26d815ad JK |
1460 | int err; |
1461 | ||
df728b0f JK |
1462 | if ((recover && f2fs_readonly(sbi->sb)) || |
1463 | bdev_read_only(sbi->sb->s_bdev)) { | |
1464 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
f2353d7b | 1465 | return -EROFS; |
df728b0f | 1466 | } |
f2353d7b | 1467 | |
fd694733 JK |
1468 | /* write back-up superblock first */ |
1469 | bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); | |
5d909cdb JK |
1470 | if (!bh) |
1471 | return -EIO; | |
fd694733 | 1472 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
5d909cdb | 1473 | brelse(bh); |
c5bda1c8 CY |
1474 | |
1475 | /* if we are in recovery path, skip writing valid superblock */ | |
1476 | if (recover || err) | |
5d909cdb | 1477 | return err; |
26d815ad JK |
1478 | |
1479 | /* write current valid superblock */ | |
fd694733 JK |
1480 | bh = sb_getblk(sbi->sb, sbi->valid_super_block); |
1481 | if (!bh) | |
1482 | return -EIO; | |
1483 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); | |
1484 | brelse(bh); | |
1485 | return err; | |
26d815ad JK |
1486 | } |
1487 | ||
aff063e2 JK |
1488 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1489 | { | |
1490 | struct f2fs_sb_info *sbi; | |
da554e48 | 1491 | struct f2fs_super_block *raw_super; |
aff063e2 | 1492 | struct inode *root; |
99e3e858 | 1493 | int err; |
2adc3505 | 1494 | bool retry = true, need_fsck = false; |
dabc4a5c | 1495 | char *options = NULL; |
e8240f65 | 1496 | int recovery, i, valid_super_block; |
8f1dbbbb | 1497 | struct curseg_info *seg_i; |
aff063e2 | 1498 | |
ed2e621a | 1499 | try_onemore: |
da554e48 | 1500 | err = -EINVAL; |
1501 | raw_super = NULL; | |
e8240f65 | 1502 | valid_super_block = -1; |
da554e48 | 1503 | recovery = 0; |
1504 | ||
aff063e2 JK |
1505 | /* allocate memory for f2fs-specific super block info */ |
1506 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1507 | if (!sbi) | |
1508 | return -ENOMEM; | |
1509 | ||
df728b0f JK |
1510 | sbi->sb = sb; |
1511 | ||
43b6573b KM |
1512 | /* Load the checksum driver */ |
1513 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); | |
1514 | if (IS_ERR(sbi->s_chksum_driver)) { | |
1515 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); | |
1516 | err = PTR_ERR(sbi->s_chksum_driver); | |
1517 | sbi->s_chksum_driver = NULL; | |
1518 | goto free_sbi; | |
1519 | } | |
1520 | ||
ff9234ad | 1521 | /* set a block size */ |
6bacf52f | 1522 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1523 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1524 | goto free_sbi; |
a07ef784 | 1525 | } |
aff063e2 | 1526 | |
df728b0f | 1527 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
e8240f65 | 1528 | &recovery); |
9076a75f GZ |
1529 | if (err) |
1530 | goto free_sbi; | |
1531 | ||
5fb08372 | 1532 | sb->s_fs_info = sbi; |
498c5e9f | 1533 | default_options(sbi); |
aff063e2 | 1534 | /* parse mount options */ |
dabc4a5c JK |
1535 | options = kstrdup((const char *)data, GFP_KERNEL); |
1536 | if (data && !options) { | |
1537 | err = -ENOMEM; | |
aff063e2 | 1538 | goto free_sb_buf; |
dabc4a5c JK |
1539 | } |
1540 | ||
1541 | err = parse_options(sb, options); | |
1542 | if (err) | |
1543 | goto free_options; | |
aff063e2 | 1544 | |
e0afc4d6 CY |
1545 | sbi->max_file_blocks = max_file_blocks(); |
1546 | sb->s_maxbytes = sbi->max_file_blocks << | |
1547 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1548 | sb->s_max_links = F2FS_LINK_MAX; |
1549 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1550 | ||
1551 | sb->s_op = &f2fs_sops; | |
0b81d077 | 1552 | sb->s_cop = &f2fs_cryptops; |
aff063e2 JK |
1553 | sb->s_xattr = f2fs_xattr_handlers; |
1554 | sb->s_export_op = &f2fs_export_ops; | |
1555 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1556 | sb->s_time_gran = 1; |
1557 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1558 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1559 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1560 | ||
1561 | /* init f2fs-specific super block info */ | |
aff063e2 | 1562 | sbi->raw_super = raw_super; |
e8240f65 | 1563 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1564 | mutex_init(&sbi->gc_mutex); |
5463e7c1 | 1565 | mutex_init(&sbi->writepages); |
aff063e2 | 1566 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1567 | init_rwsem(&sbi->node_write); |
315df839 JK |
1568 | |
1569 | /* disallow all the data/node/meta page writes */ | |
1570 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1571 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1572 | |
df0f8dc0 | 1573 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1574 | sbi->read_io.sbi = sbi; |
1575 | sbi->read_io.bio = NULL; | |
1576 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1577 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1578 | sbi->write_io[i].sbi = sbi; |
1579 | sbi->write_io[i].bio = NULL; | |
1580 | } | |
971767ca | 1581 | |
e479556b | 1582 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1583 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1584 | init_sb_info(sbi); |
1585 | ||
523be8a6 JK |
1586 | err = init_percpu_info(sbi); |
1587 | if (err) | |
1588 | goto free_options; | |
1589 | ||
aff063e2 JK |
1590 | /* get an inode for meta space */ |
1591 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1592 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1593 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1594 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1595 | goto free_options; |
aff063e2 JK |
1596 | } |
1597 | ||
1598 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1599 | if (err) { |
1600 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1601 | goto free_meta_inode; |
a07ef784 | 1602 | } |
aff063e2 | 1603 | |
aff063e2 JK |
1604 | sbi->total_valid_node_count = |
1605 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
513c5f37 JK |
1606 | percpu_counter_set(&sbi->total_valid_inode_count, |
1607 | le32_to_cpu(sbi->ckpt->valid_inode_count)); | |
aff063e2 JK |
1608 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); |
1609 | sbi->total_valid_block_count = | |
1610 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1611 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
41382ec4 | 1612 | |
c227f912 CY |
1613 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1614 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1615 | spin_lock_init(&sbi->inode_lock[i]); | |
1616 | } | |
aff063e2 | 1617 | |
1dcc336b CY |
1618 | init_extent_cache_info(sbi); |
1619 | ||
6451e041 | 1620 | init_ino_entry_info(sbi); |
aff063e2 JK |
1621 | |
1622 | /* setup f2fs internal modules */ | |
1623 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1624 | if (err) { |
1625 | f2fs_msg(sb, KERN_ERR, | |
1626 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1627 | goto free_sm; |
a07ef784 | 1628 | } |
aff063e2 | 1629 | err = build_node_manager(sbi); |
a07ef784 NJ |
1630 | if (err) { |
1631 | f2fs_msg(sb, KERN_ERR, | |
1632 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1633 | goto free_nm; |
a07ef784 | 1634 | } |
aff063e2 | 1635 | |
8f1dbbbb SL |
1636 | /* For write statistics */ |
1637 | if (sb->s_bdev->bd_part) | |
1638 | sbi->sectors_written_start = | |
1639 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1640 | ||
1641 | /* Read accumulated write IO statistics if exists */ | |
1642 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1643 | if (__exist_node_summaries(sbi)) | |
1644 | sbi->kbytes_written = | |
b2dde6fc | 1645 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
8f1dbbbb | 1646 | |
aff063e2 JK |
1647 | build_gc_manager(sbi); |
1648 | ||
1649 | /* get an inode for node space */ | |
1650 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1651 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1652 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1653 | err = PTR_ERR(sbi->node_inode); |
1654 | goto free_nm; | |
1655 | } | |
1656 | ||
2658e50d JK |
1657 | f2fs_join_shrinker(sbi); |
1658 | ||
aff063e2 | 1659 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1660 | err = recover_orphan_inodes(sbi); |
1661 | if (err) | |
1662 | goto free_node_inode; | |
aff063e2 JK |
1663 | |
1664 | /* read root inode and dentry */ | |
1665 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1666 | if (IS_ERR(root)) { | |
a07ef784 | 1667 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1668 | err = PTR_ERR(root); |
1669 | goto free_node_inode; | |
1670 | } | |
8f99a946 | 1671 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1672 | iput(root); |
8f99a946 | 1673 | err = -EINVAL; |
9d847950 | 1674 | goto free_node_inode; |
8f99a946 | 1675 | } |
aff063e2 JK |
1676 | |
1677 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1678 | if (!sb->s_root) { | |
1679 | err = -ENOMEM; | |
1680 | goto free_root_inode; | |
1681 | } | |
1682 | ||
aff063e2 JK |
1683 | err = f2fs_build_stats(sbi); |
1684 | if (err) | |
6437d1b0 | 1685 | goto free_root_inode; |
aff063e2 | 1686 | |
5e176d54 JK |
1687 | if (f2fs_proc_root) |
1688 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1689 | ||
f00d6fa7 | 1690 | if (sbi->s_proc) { |
5e176d54 JK |
1691 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, |
1692 | &f2fs_seq_segment_info_fops, sb); | |
f00d6fa7 JK |
1693 | proc_create_data("segment_bits", S_IRUGO, sbi->s_proc, |
1694 | &f2fs_seq_segment_bits_fops, sb); | |
1695 | } | |
5e176d54 | 1696 | |
b59d0bae NJ |
1697 | sbi->s_kobj.kset = f2fs_kset; |
1698 | init_completion(&sbi->s_kobj_unregister); | |
1699 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1700 | "%s", sb->s_id); | |
1701 | if (err) | |
6437d1b0 | 1702 | goto free_proc; |
b59d0bae | 1703 | |
6437d1b0 JK |
1704 | /* recover fsynced data */ |
1705 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1706 | /* |
1707 | * mount should be failed, when device has readonly mode, and | |
1708 | * previous checkpoint was not done by clean system shutdown. | |
1709 | */ | |
1710 | if (bdev_read_only(sb->s_bdev) && | |
1711 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { | |
1712 | err = -EROFS; | |
1713 | goto free_kobj; | |
1714 | } | |
2adc3505 CY |
1715 | |
1716 | if (need_fsck) | |
1717 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1718 | ||
6781eabb JK |
1719 | err = recover_fsync_data(sbi, false); |
1720 | if (err < 0) { | |
2adc3505 | 1721 | need_fsck = true; |
6437d1b0 | 1722 | f2fs_msg(sb, KERN_ERR, |
99e3e858 | 1723 | "Cannot recover all fsync data errno=%d", err); |
ed2e621a JK |
1724 | goto free_kobj; |
1725 | } | |
6781eabb JK |
1726 | } else { |
1727 | err = recover_fsync_data(sbi, true); | |
1728 | ||
1729 | if (!f2fs_readonly(sb) && err > 0) { | |
1730 | err = -EINVAL; | |
1731 | f2fs_msg(sb, KERN_ERR, | |
1732 | "Need to recover fsync data"); | |
1733 | goto free_kobj; | |
1734 | } | |
6437d1b0 | 1735 | } |
6781eabb | 1736 | |
315df839 JK |
1737 | /* recover_fsync_data() cleared this already */ |
1738 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1739 | |
6437d1b0 JK |
1740 | /* |
1741 | * If filesystem is not mounted as read-only then | |
1742 | * do start the gc_thread. | |
1743 | */ | |
6c029932 | 1744 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1745 | /* After POR, we can run background GC thread.*/ |
1746 | err = start_gc_thread(sbi); | |
1747 | if (err) | |
1748 | goto free_kobj; | |
1749 | } | |
dabc4a5c | 1750 | kfree(options); |
da554e48 | 1751 | |
1752 | /* recover broken superblock */ | |
f2353d7b | 1753 | if (recovery) { |
41214b3c CY |
1754 | err = f2fs_commit_super(sbi, true); |
1755 | f2fs_msg(sb, KERN_INFO, | |
99e3e858 | 1756 | "Try to recover %dth superblock, ret: %d", |
41214b3c | 1757 | sbi->valid_super_block ? 1 : 2, err); |
da554e48 | 1758 | } |
1759 | ||
6beceb54 | 1760 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1761 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1762 | return 0; |
6437d1b0 JK |
1763 | |
1764 | free_kobj: | |
1765 | kobject_del(&sbi->s_kobj); | |
29ba108d CY |
1766 | kobject_put(&sbi->s_kobj); |
1767 | wait_for_completion(&sbi->s_kobj_unregister); | |
6437d1b0 | 1768 | free_proc: |
1d15bd20 CY |
1769 | if (sbi->s_proc) { |
1770 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 1771 | remove_proc_entry("segment_bits", sbi->s_proc); |
1d15bd20 CY |
1772 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
1773 | } | |
1774 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1775 | free_root_inode: |
1776 | dput(sb->s_root); | |
1777 | sb->s_root = NULL; | |
1778 | free_node_inode: | |
2658e50d JK |
1779 | mutex_lock(&sbi->umount_mutex); |
1780 | f2fs_leave_shrinker(sbi); | |
aff063e2 | 1781 | iput(sbi->node_inode); |
2658e50d | 1782 | mutex_unlock(&sbi->umount_mutex); |
aff063e2 JK |
1783 | free_nm: |
1784 | destroy_node_manager(sbi); | |
1785 | free_sm: | |
1786 | destroy_segment_manager(sbi); | |
aff063e2 JK |
1787 | kfree(sbi->ckpt); |
1788 | free_meta_inode: | |
1789 | make_bad_inode(sbi->meta_inode); | |
1790 | iput(sbi->meta_inode); | |
dabc4a5c | 1791 | free_options: |
523be8a6 | 1792 | destroy_percpu_info(sbi); |
dabc4a5c | 1793 | kfree(options); |
aff063e2 | 1794 | free_sb_buf: |
b39f0de2 | 1795 | kfree(raw_super); |
aff063e2 | 1796 | free_sbi: |
43b6573b KM |
1797 | if (sbi->s_chksum_driver) |
1798 | crypto_free_shash(sbi->s_chksum_driver); | |
aff063e2 | 1799 | kfree(sbi); |
ed2e621a JK |
1800 | |
1801 | /* give only one another chance */ | |
1802 | if (retry) { | |
9df47ba7 | 1803 | retry = false; |
ed2e621a JK |
1804 | shrink_dcache_sb(sb); |
1805 | goto try_onemore; | |
1806 | } | |
aff063e2 JK |
1807 | return err; |
1808 | } | |
1809 | ||
1810 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1811 | const char *dev_name, void *data) | |
1812 | { | |
1813 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1814 | } | |
1815 | ||
30a5537f JK |
1816 | static void kill_f2fs_super(struct super_block *sb) |
1817 | { | |
1818 | if (sb->s_root) | |
caf0047e | 1819 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1820 | kill_block_super(sb); |
1821 | } | |
1822 | ||
aff063e2 JK |
1823 | static struct file_system_type f2fs_fs_type = { |
1824 | .owner = THIS_MODULE, | |
1825 | .name = "f2fs", | |
1826 | .mount = f2fs_mount, | |
30a5537f | 1827 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1828 | .fs_flags = FS_REQUIRES_DEV, |
1829 | }; | |
7f78e035 | 1830 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1831 | |
6e6093a8 | 1832 | static int __init init_inodecache(void) |
aff063e2 | 1833 | { |
5d097056 VD |
1834 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1835 | sizeof(struct f2fs_inode_info), 0, | |
1836 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1837 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1838 | return -ENOMEM; |
1839 | return 0; | |
1840 | } | |
1841 | ||
1842 | static void destroy_inodecache(void) | |
1843 | { | |
1844 | /* | |
1845 | * Make sure all delayed rcu free inodes are flushed before we | |
1846 | * destroy cache. | |
1847 | */ | |
1848 | rcu_barrier(); | |
1849 | kmem_cache_destroy(f2fs_inode_cachep); | |
1850 | } | |
1851 | ||
1852 | static int __init init_f2fs_fs(void) | |
1853 | { | |
1854 | int err; | |
1855 | ||
c0508650 JK |
1856 | f2fs_build_trace_ios(); |
1857 | ||
aff063e2 JK |
1858 | err = init_inodecache(); |
1859 | if (err) | |
1860 | goto fail; | |
1861 | err = create_node_manager_caches(); | |
1862 | if (err) | |
9890ff3f | 1863 | goto free_inodecache; |
7fd9e544 | 1864 | err = create_segment_manager_caches(); |
aff063e2 | 1865 | if (err) |
9890ff3f | 1866 | goto free_node_manager_caches; |
aff063e2 JK |
1867 | err = create_checkpoint_caches(); |
1868 | if (err) | |
06292073 | 1869 | goto free_segment_manager_caches; |
1dcc336b CY |
1870 | err = create_extent_cache(); |
1871 | if (err) | |
1872 | goto free_checkpoint_caches; | |
b59d0bae | 1873 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1874 | if (!f2fs_kset) { |
1875 | err = -ENOMEM; | |
1dcc336b | 1876 | goto free_extent_cache; |
6e6b978c | 1877 | } |
08796897 SY |
1878 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
1879 | f2fs_fault_inject.kset = f2fs_kset; | |
1880 | f2fs_build_fault_attr(0); | |
1881 | err = kobject_init_and_add(&f2fs_fault_inject, &f2fs_fault_ktype, | |
1882 | NULL, "fault_injection"); | |
1883 | if (err) { | |
1884 | f2fs_fault_inject.kset = NULL; | |
1885 | goto free_kset; | |
1886 | } | |
1887 | #endif | |
2658e50d | 1888 | err = register_shrinker(&f2fs_shrinker_info); |
cfc4d971 | 1889 | if (err) |
0b81d077 | 1890 | goto free_kset; |
2658e50d JK |
1891 | |
1892 | err = register_filesystem(&f2fs_fs_type); | |
1893 | if (err) | |
1894 | goto free_shrinker; | |
787c7b8c CY |
1895 | err = f2fs_create_root_stats(); |
1896 | if (err) | |
1897 | goto free_filesystem; | |
5e176d54 | 1898 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
1899 | return 0; |
1900 | ||
787c7b8c CY |
1901 | free_filesystem: |
1902 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
1903 | free_shrinker: |
1904 | unregister_shrinker(&f2fs_shrinker_info); | |
9890ff3f | 1905 | free_kset: |
08796897 SY |
1906 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
1907 | if (f2fs_fault_inject.kset) | |
1908 | kobject_put(&f2fs_fault_inject); | |
1909 | #endif | |
9890ff3f | 1910 | kset_unregister(f2fs_kset); |
1dcc336b CY |
1911 | free_extent_cache: |
1912 | destroy_extent_cache(); | |
9890ff3f ZH |
1913 | free_checkpoint_caches: |
1914 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
1915 | free_segment_manager_caches: |
1916 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
1917 | free_node_manager_caches: |
1918 | destroy_node_manager_caches(); | |
1919 | free_inodecache: | |
1920 | destroy_inodecache(); | |
aff063e2 JK |
1921 | fail: |
1922 | return err; | |
1923 | } | |
1924 | ||
1925 | static void __exit exit_f2fs_fs(void) | |
1926 | { | |
5e176d54 | 1927 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 1928 | f2fs_destroy_root_stats(); |
aff063e2 | 1929 | unregister_filesystem(&f2fs_fs_type); |
b8bef79d TY |
1930 | unregister_shrinker(&f2fs_shrinker_info); |
1931 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
1932 | kobject_put(&f2fs_fault_inject); | |
1933 | #endif | |
1934 | kset_unregister(f2fs_kset); | |
fdf6c8be | 1935 | destroy_extent_cache(); |
aff063e2 | 1936 | destroy_checkpoint_caches(); |
5dcd8a71 | 1937 | destroy_segment_manager_caches(); |
aff063e2 JK |
1938 | destroy_node_manager_caches(); |
1939 | destroy_inodecache(); | |
351f4fba | 1940 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
1941 | } |
1942 | ||
1943 | module_init(init_f2fs_fs) | |
1944 | module_exit(exit_f2fs_fs) | |
1945 | ||
1946 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
1947 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
1948 | MODULE_LICENSE("GPL"); |