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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", | |
53aa6bbf | 52 | [FAULT_EVICT_INODE] = "evict_inode fail", |
8b038c70 | 53 | [FAULT_IO] = "IO error", |
2c63fead | 54 | }; |
08796897 SY |
55 | |
56 | static void f2fs_build_fault_attr(unsigned int rate) | |
57 | { | |
58 | if (rate) { | |
59 | atomic_set(&f2fs_fault.inject_ops, 0); | |
60 | f2fs_fault.inject_rate = rate; | |
61 | f2fs_fault.inject_type = (1 << FAULT_MAX) - 1; | |
62 | } else { | |
63 | memset(&f2fs_fault, 0, sizeof(struct f2fs_fault_info)); | |
64 | } | |
65 | } | |
73faec4d JK |
66 | #endif |
67 | ||
2658e50d JK |
68 | /* f2fs-wide shrinker description */ |
69 | static struct shrinker f2fs_shrinker_info = { | |
70 | .scan_objects = f2fs_shrink_scan, | |
71 | .count_objects = f2fs_shrink_count, | |
72 | .seeks = DEFAULT_SEEKS, | |
73 | }; | |
74 | ||
aff063e2 | 75 | enum { |
696c018c | 76 | Opt_gc_background, |
aff063e2 | 77 | Opt_disable_roll_forward, |
2d834bf9 | 78 | Opt_norecovery, |
aff063e2 | 79 | Opt_discard, |
64058be9 | 80 | Opt_nodiscard, |
aff063e2 | 81 | Opt_noheap, |
4058c511 | 82 | Opt_user_xattr, |
aff063e2 | 83 | Opt_nouser_xattr, |
4058c511 | 84 | Opt_acl, |
aff063e2 JK |
85 | Opt_noacl, |
86 | Opt_active_logs, | |
87 | Opt_disable_ext_identify, | |
444c580f | 88 | Opt_inline_xattr, |
8274de77 | 89 | Opt_inline_data, |
5efd3c6f | 90 | Opt_inline_dentry, |
97c1794a | 91 | Opt_noinline_dentry, |
6b4afdd7 | 92 | Opt_flush_merge, |
69e9e427 | 93 | Opt_noflush_merge, |
0f7b2abd | 94 | Opt_nobarrier, |
d5053a34 | 95 | Opt_fastboot, |
89672159 | 96 | Opt_extent_cache, |
7daaea25 | 97 | Opt_noextent_cache, |
75342797 | 98 | Opt_noinline_data, |
343f40f0 | 99 | Opt_data_flush, |
36abef4e | 100 | Opt_mode, |
73faec4d | 101 | Opt_fault_injection, |
6d94c74a JK |
102 | Opt_lazytime, |
103 | Opt_nolazytime, | |
aff063e2 JK |
104 | Opt_err, |
105 | }; | |
106 | ||
107 | static match_table_t f2fs_tokens = { | |
696c018c | 108 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 109 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 110 | {Opt_norecovery, "norecovery"}, |
aff063e2 | 111 | {Opt_discard, "discard"}, |
64058be9 | 112 | {Opt_nodiscard, "nodiscard"}, |
aff063e2 | 113 | {Opt_noheap, "no_heap"}, |
4058c511 | 114 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 115 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 116 | {Opt_acl, "acl"}, |
aff063e2 JK |
117 | {Opt_noacl, "noacl"}, |
118 | {Opt_active_logs, "active_logs=%u"}, | |
119 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 120 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 121 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 122 | {Opt_inline_dentry, "inline_dentry"}, |
97c1794a | 123 | {Opt_noinline_dentry, "noinline_dentry"}, |
6b4afdd7 | 124 | {Opt_flush_merge, "flush_merge"}, |
69e9e427 | 125 | {Opt_noflush_merge, "noflush_merge"}, |
0f7b2abd | 126 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 127 | {Opt_fastboot, "fastboot"}, |
89672159 | 128 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 129 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 130 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 131 | {Opt_data_flush, "data_flush"}, |
36abef4e | 132 | {Opt_mode, "mode=%s"}, |
73faec4d | 133 | {Opt_fault_injection, "fault_injection=%u"}, |
6d94c74a JK |
134 | {Opt_lazytime, "lazytime"}, |
135 | {Opt_nolazytime, "nolazytime"}, | |
aff063e2 JK |
136 | {Opt_err, NULL}, |
137 | }; | |
138 | ||
b59d0bae | 139 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
140 | enum { |
141 | GC_THREAD, /* struct f2fs_gc_thread */ | |
142 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 143 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 144 | F2FS_SBI, /* struct f2fs_sb_info */ |
08796897 SY |
145 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
146 | FAULT_INFO_RATE, /* struct f2fs_fault_info */ | |
147 | FAULT_INFO_TYPE, /* struct f2fs_fault_info */ | |
148 | #endif | |
ea91e9b0 JK |
149 | }; |
150 | ||
b59d0bae NJ |
151 | struct f2fs_attr { |
152 | struct attribute attr; | |
153 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
154 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
155 | const char *, size_t); | |
ea91e9b0 | 156 | int struct_type; |
b59d0bae NJ |
157 | int offset; |
158 | }; | |
159 | ||
ea91e9b0 JK |
160 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
161 | { | |
162 | if (struct_type == GC_THREAD) | |
163 | return (unsigned char *)sbi->gc_thread; | |
164 | else if (struct_type == SM_INFO) | |
165 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
166 | else if (struct_type == NM_INFO) |
167 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
168 | else if (struct_type == F2FS_SBI) |
169 | return (unsigned char *)sbi; | |
08796897 SY |
170 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
171 | else if (struct_type == FAULT_INFO_RATE || | |
172 | struct_type == FAULT_INFO_TYPE) | |
173 | return (unsigned char *)&f2fs_fault; | |
174 | #endif | |
ea91e9b0 JK |
175 | return NULL; |
176 | } | |
177 | ||
8f1dbbbb SL |
178 | static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
179 | struct f2fs_sb_info *sbi, char *buf) | |
180 | { | |
181 | struct super_block *sb = sbi->sb; | |
182 | ||
183 | if (!sb->s_bdev->bd_part) | |
184 | return snprintf(buf, PAGE_SIZE, "0\n"); | |
185 | ||
186 | return snprintf(buf, PAGE_SIZE, "%llu\n", | |
187 | (unsigned long long)(sbi->kbytes_written + | |
188 | BD_PART_WRITTEN(sbi))); | |
189 | } | |
190 | ||
b59d0bae NJ |
191 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
192 | struct f2fs_sb_info *sbi, char *buf) | |
193 | { | |
ea91e9b0 | 194 | unsigned char *ptr = NULL; |
b59d0bae NJ |
195 | unsigned int *ui; |
196 | ||
ea91e9b0 JK |
197 | ptr = __struct_ptr(sbi, a->struct_type); |
198 | if (!ptr) | |
b59d0bae NJ |
199 | return -EINVAL; |
200 | ||
ea91e9b0 | 201 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
202 | |
203 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
204 | } | |
205 | ||
206 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
207 | struct f2fs_sb_info *sbi, | |
208 | const char *buf, size_t count) | |
209 | { | |
ea91e9b0 | 210 | unsigned char *ptr; |
b59d0bae NJ |
211 | unsigned long t; |
212 | unsigned int *ui; | |
213 | ssize_t ret; | |
214 | ||
ea91e9b0 JK |
215 | ptr = __struct_ptr(sbi, a->struct_type); |
216 | if (!ptr) | |
b59d0bae NJ |
217 | return -EINVAL; |
218 | ||
ea91e9b0 | 219 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
220 | |
221 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
222 | if (ret < 0) | |
223 | return ret; | |
08796897 SY |
224 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
225 | if (a->struct_type == FAULT_INFO_TYPE && t >= (1 << FAULT_MAX)) | |
226 | return -EINVAL; | |
227 | #endif | |
b59d0bae NJ |
228 | *ui = t; |
229 | return count; | |
230 | } | |
231 | ||
232 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
233 | struct attribute *attr, char *buf) | |
234 | { | |
235 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
236 | s_kobj); | |
237 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
238 | ||
239 | return a->show ? a->show(a, sbi, buf) : 0; | |
240 | } | |
241 | ||
242 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
243 | const char *buf, size_t len) | |
244 | { | |
245 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
246 | s_kobj); | |
247 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
248 | ||
249 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
250 | } | |
251 | ||
252 | static void f2fs_sb_release(struct kobject *kobj) | |
253 | { | |
254 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
255 | s_kobj); | |
256 | complete(&sbi->s_kobj_unregister); | |
257 | } | |
258 | ||
ea91e9b0 | 259 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
260 | static struct f2fs_attr f2fs_attr_##_name = { \ |
261 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
262 | .show = _show, \ | |
263 | .store = _store, \ | |
ea91e9b0 JK |
264 | .struct_type = _struct_type, \ |
265 | .offset = _offset \ | |
b59d0bae NJ |
266 | } |
267 | ||
ea91e9b0 JK |
268 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
269 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
270 | f2fs_sbi_show, f2fs_sbi_store, \ | |
271 | offsetof(struct struct_name, elname)) | |
b59d0bae | 272 | |
8f1dbbbb SL |
273 | #define F2FS_GENERAL_RO_ATTR(name) \ |
274 | static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) | |
275 | ||
ea91e9b0 JK |
276 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
277 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
278 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
279 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
280 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 281 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 282 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
283 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
284 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 285 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 286 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
ea1a29a0 | 287 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
2304cb0c | 288 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
b1c57c1c | 289 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 290 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
6beceb54 | 291 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
d0239e1b | 292 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
08796897 SY |
293 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
294 | F2FS_RW_ATTR(FAULT_INFO_RATE, f2fs_fault_info, inject_rate, inject_rate); | |
295 | F2FS_RW_ATTR(FAULT_INFO_TYPE, f2fs_fault_info, inject_type, inject_type); | |
296 | #endif | |
8f1dbbbb | 297 | F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
b59d0bae NJ |
298 | |
299 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
300 | static struct attribute *f2fs_attrs[] = { | |
301 | ATTR_LIST(gc_min_sleep_time), | |
302 | ATTR_LIST(gc_max_sleep_time), | |
303 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 304 | ATTR_LIST(gc_idle), |
ea91e9b0 | 305 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 306 | ATTR_LIST(max_small_discards), |
bba681cb | 307 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
308 | ATTR_LIST(ipu_policy), |
309 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 310 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 311 | ATTR_LIST(max_victim_search), |
ab9fa662 | 312 | ATTR_LIST(dir_level), |
cdfc41c1 | 313 | ATTR_LIST(ram_thresh), |
ea1a29a0 | 314 | ATTR_LIST(ra_nid_pages), |
2304cb0c | 315 | ATTR_LIST(dirty_nats_ratio), |
60b99b48 | 316 | ATTR_LIST(cp_interval), |
d0239e1b | 317 | ATTR_LIST(idle_interval), |
8f1dbbbb | 318 | ATTR_LIST(lifetime_write_kbytes), |
b59d0bae NJ |
319 | NULL, |
320 | }; | |
321 | ||
322 | static const struct sysfs_ops f2fs_attr_ops = { | |
323 | .show = f2fs_attr_show, | |
324 | .store = f2fs_attr_store, | |
325 | }; | |
326 | ||
327 | static struct kobj_type f2fs_ktype = { | |
328 | .default_attrs = f2fs_attrs, | |
329 | .sysfs_ops = &f2fs_attr_ops, | |
330 | .release = f2fs_sb_release, | |
331 | }; | |
332 | ||
08796897 SY |
333 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
334 | /* sysfs for f2fs fault injection */ | |
335 | static struct kobject f2fs_fault_inject; | |
336 | ||
337 | static struct attribute *f2fs_fault_attrs[] = { | |
338 | ATTR_LIST(inject_rate), | |
339 | ATTR_LIST(inject_type), | |
340 | NULL | |
341 | }; | |
342 | ||
343 | static struct kobj_type f2fs_fault_ktype = { | |
344 | .default_attrs = f2fs_fault_attrs, | |
345 | .sysfs_ops = &f2fs_attr_ops, | |
346 | }; | |
347 | #endif | |
348 | ||
a07ef784 NJ |
349 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
350 | { | |
351 | struct va_format vaf; | |
352 | va_list args; | |
353 | ||
354 | va_start(args, fmt); | |
355 | vaf.fmt = fmt; | |
356 | vaf.va = &args; | |
357 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
358 | va_end(args); | |
359 | } | |
360 | ||
aff063e2 JK |
361 | static void init_once(void *foo) |
362 | { | |
363 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
364 | ||
aff063e2 JK |
365 | inode_init_once(&fi->vfs_inode); |
366 | } | |
367 | ||
696c018c NJ |
368 | static int parse_options(struct super_block *sb, char *options) |
369 | { | |
370 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 371 | struct request_queue *q; |
696c018c NJ |
372 | substring_t args[MAX_OPT_ARGS]; |
373 | char *p, *name; | |
374 | int arg = 0; | |
375 | ||
73faec4d | 376 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
08796897 | 377 | f2fs_build_fault_attr(0); |
73faec4d | 378 | #endif |
08796897 | 379 | |
696c018c NJ |
380 | if (!options) |
381 | return 0; | |
382 | ||
383 | while ((p = strsep(&options, ",")) != NULL) { | |
384 | int token; | |
385 | if (!*p) | |
386 | continue; | |
387 | /* | |
388 | * Initialize args struct so we know whether arg was | |
389 | * found; some options take optional arguments. | |
390 | */ | |
391 | args[0].to = args[0].from = NULL; | |
392 | token = match_token(p, f2fs_tokens, args); | |
393 | ||
394 | switch (token) { | |
395 | case Opt_gc_background: | |
396 | name = match_strdup(&args[0]); | |
397 | ||
398 | if (!name) | |
399 | return -ENOMEM; | |
6aefd93b | 400 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 401 | set_opt(sbi, BG_GC); |
6aefd93b JK |
402 | clear_opt(sbi, FORCE_FG_GC); |
403 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 404 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
405 | clear_opt(sbi, FORCE_FG_GC); |
406 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
407 | set_opt(sbi, BG_GC); | |
408 | set_opt(sbi, FORCE_FG_GC); | |
409 | } else { | |
696c018c NJ |
410 | kfree(name); |
411 | return -EINVAL; | |
412 | } | |
413 | kfree(name); | |
414 | break; | |
415 | case Opt_disable_roll_forward: | |
416 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
417 | break; | |
2d834bf9 JK |
418 | case Opt_norecovery: |
419 | /* this option mounts f2fs with ro */ | |
420 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
421 | if (!f2fs_readonly(sb)) | |
422 | return -EINVAL; | |
423 | break; | |
696c018c | 424 | case Opt_discard: |
09d54cdd CY |
425 | q = bdev_get_queue(sb->s_bdev); |
426 | if (blk_queue_discard(q)) { | |
427 | set_opt(sbi, DISCARD); | |
428 | } else { | |
429 | f2fs_msg(sb, KERN_WARNING, | |
430 | "mounting with \"discard\" option, but " | |
431 | "the device does not support discard"); | |
432 | } | |
696c018c | 433 | break; |
64058be9 CY |
434 | case Opt_nodiscard: |
435 | clear_opt(sbi, DISCARD); | |
696c018c NJ |
436 | case Opt_noheap: |
437 | set_opt(sbi, NOHEAP); | |
438 | break; | |
439 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
440 | case Opt_user_xattr: |
441 | set_opt(sbi, XATTR_USER); | |
442 | break; | |
696c018c NJ |
443 | case Opt_nouser_xattr: |
444 | clear_opt(sbi, XATTR_USER); | |
445 | break; | |
444c580f JK |
446 | case Opt_inline_xattr: |
447 | set_opt(sbi, INLINE_XATTR); | |
448 | break; | |
696c018c | 449 | #else |
4058c511 KA |
450 | case Opt_user_xattr: |
451 | f2fs_msg(sb, KERN_INFO, | |
452 | "user_xattr options not supported"); | |
453 | break; | |
696c018c NJ |
454 | case Opt_nouser_xattr: |
455 | f2fs_msg(sb, KERN_INFO, | |
456 | "nouser_xattr options not supported"); | |
457 | break; | |
444c580f JK |
458 | case Opt_inline_xattr: |
459 | f2fs_msg(sb, KERN_INFO, | |
460 | "inline_xattr options not supported"); | |
461 | break; | |
696c018c NJ |
462 | #endif |
463 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
464 | case Opt_acl: |
465 | set_opt(sbi, POSIX_ACL); | |
466 | break; | |
696c018c NJ |
467 | case Opt_noacl: |
468 | clear_opt(sbi, POSIX_ACL); | |
469 | break; | |
470 | #else | |
4058c511 KA |
471 | case Opt_acl: |
472 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
473 | break; | |
696c018c NJ |
474 | case Opt_noacl: |
475 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
476 | break; | |
477 | #endif | |
478 | case Opt_active_logs: | |
479 | if (args->from && match_int(args, &arg)) | |
480 | return -EINVAL; | |
481 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
482 | return -EINVAL; | |
483 | sbi->active_logs = arg; | |
484 | break; | |
485 | case Opt_disable_ext_identify: | |
486 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
487 | break; | |
8274de77 HL |
488 | case Opt_inline_data: |
489 | set_opt(sbi, INLINE_DATA); | |
490 | break; | |
5efd3c6f CY |
491 | case Opt_inline_dentry: |
492 | set_opt(sbi, INLINE_DENTRY); | |
493 | break; | |
97c1794a CY |
494 | case Opt_noinline_dentry: |
495 | clear_opt(sbi, INLINE_DENTRY); | |
496 | break; | |
6b4afdd7 JK |
497 | case Opt_flush_merge: |
498 | set_opt(sbi, FLUSH_MERGE); | |
499 | break; | |
69e9e427 JK |
500 | case Opt_noflush_merge: |
501 | clear_opt(sbi, FLUSH_MERGE); | |
502 | break; | |
0f7b2abd JK |
503 | case Opt_nobarrier: |
504 | set_opt(sbi, NOBARRIER); | |
505 | break; | |
d5053a34 JK |
506 | case Opt_fastboot: |
507 | set_opt(sbi, FASTBOOT); | |
508 | break; | |
89672159 CY |
509 | case Opt_extent_cache: |
510 | set_opt(sbi, EXTENT_CACHE); | |
511 | break; | |
7daaea25 JK |
512 | case Opt_noextent_cache: |
513 | clear_opt(sbi, EXTENT_CACHE); | |
514 | break; | |
75342797 WL |
515 | case Opt_noinline_data: |
516 | clear_opt(sbi, INLINE_DATA); | |
517 | break; | |
343f40f0 CY |
518 | case Opt_data_flush: |
519 | set_opt(sbi, DATA_FLUSH); | |
520 | break; | |
36abef4e JK |
521 | case Opt_mode: |
522 | name = match_strdup(&args[0]); | |
523 | ||
524 | if (!name) | |
525 | return -ENOMEM; | |
526 | if (strlen(name) == 8 && | |
527 | !strncmp(name, "adaptive", 8)) { | |
52763a4b | 528 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); |
36abef4e JK |
529 | } else if (strlen(name) == 3 && |
530 | !strncmp(name, "lfs", 3)) { | |
52763a4b | 531 | set_opt_mode(sbi, F2FS_MOUNT_LFS); |
36abef4e JK |
532 | } else { |
533 | kfree(name); | |
534 | return -EINVAL; | |
535 | } | |
536 | kfree(name); | |
537 | break; | |
73faec4d JK |
538 | case Opt_fault_injection: |
539 | if (args->from && match_int(args, &arg)) | |
540 | return -EINVAL; | |
541 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
08796897 | 542 | f2fs_build_fault_attr(arg); |
73faec4d JK |
543 | #else |
544 | f2fs_msg(sb, KERN_INFO, | |
545 | "FAULT_INJECTION was not selected"); | |
546 | #endif | |
547 | break; | |
6d94c74a JK |
548 | case Opt_lazytime: |
549 | sb->s_flags |= MS_LAZYTIME; | |
550 | break; | |
551 | case Opt_nolazytime: | |
552 | sb->s_flags &= ~MS_LAZYTIME; | |
553 | break; | |
696c018c NJ |
554 | default: |
555 | f2fs_msg(sb, KERN_ERR, | |
556 | "Unrecognized mount option \"%s\" or missing value", | |
557 | p); | |
558 | return -EINVAL; | |
559 | } | |
560 | } | |
561 | return 0; | |
562 | } | |
563 | ||
aff063e2 JK |
564 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
565 | { | |
566 | struct f2fs_inode_info *fi; | |
567 | ||
a0acdfe0 | 568 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
569 | if (!fi) |
570 | return NULL; | |
571 | ||
572 | init_once((void *) fi); | |
573 | ||
1beba1b3 JK |
574 | if (percpu_counter_init(&fi->dirty_pages, 0, GFP_NOFS)) { |
575 | kmem_cache_free(f2fs_inode_cachep, fi); | |
576 | return NULL; | |
577 | } | |
578 | ||
434720fa | 579 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 580 | fi->vfs_inode.i_version = 1; |
aff063e2 JK |
581 | fi->i_current_depth = 1; |
582 | fi->i_advise = 0; | |
d928bfbf | 583 | init_rwsem(&fi->i_sem); |
2710fd7e | 584 | INIT_LIST_HEAD(&fi->dirty_list); |
0f18b462 | 585 | INIT_LIST_HEAD(&fi->gdirty_list); |
88b88a66 JK |
586 | INIT_LIST_HEAD(&fi->inmem_pages); |
587 | mutex_init(&fi->inmem_lock); | |
82e0a5aa CY |
588 | init_rwsem(&fi->dio_rwsem[READ]); |
589 | init_rwsem(&fi->dio_rwsem[WRITE]); | |
aff063e2 | 590 | |
ab9fa662 JK |
591 | /* Will be used by directory only */ |
592 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
aff063e2 JK |
593 | return &fi->vfs_inode; |
594 | } | |
595 | ||
531ad7d5 JK |
596 | static int f2fs_drop_inode(struct inode *inode) |
597 | { | |
598 | /* | |
599 | * This is to avoid a deadlock condition like below. | |
600 | * writeback_single_inode(inode) | |
601 | * - f2fs_write_data_page | |
602 | * - f2fs_gc -> iput -> evict | |
603 | * - inode_wait_for_writeback(inode) | |
604 | */ | |
0f18b462 | 605 | if ((!inode_unhashed(inode) && inode->i_state & I_SYNC)) { |
06e1bc05 | 606 | if (!inode->i_nlink && !is_bad_inode(inode)) { |
3e72f721 JK |
607 | /* to avoid evict_inode call simultaneously */ |
608 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
609 | spin_unlock(&inode->i_lock); |
610 | ||
611 | /* some remained atomic pages should discarded */ | |
612 | if (f2fs_is_atomic_file(inode)) | |
29b96b54 | 613 | drop_inmem_pages(inode); |
06e1bc05 | 614 | |
3e72f721 JK |
615 | /* should remain fi->extent_tree for writepage */ |
616 | f2fs_destroy_extent_node(inode); | |
617 | ||
06e1bc05 | 618 | sb_start_intwrite(inode->i_sb); |
fc9581c8 | 619 | f2fs_i_size_write(inode, 0); |
06e1bc05 JK |
620 | |
621 | if (F2FS_HAS_BLOCKS(inode)) | |
9a449e9c | 622 | f2fs_truncate(inode); |
06e1bc05 JK |
623 | |
624 | sb_end_intwrite(inode->i_sb); | |
625 | ||
0b81d077 | 626 | fscrypt_put_encryption_info(inode, NULL); |
06e1bc05 | 627 | spin_lock(&inode->i_lock); |
3e72f721 | 628 | atomic_dec(&inode->i_count); |
06e1bc05 | 629 | } |
531ad7d5 | 630 | return 0; |
06e1bc05 | 631 | } |
0f18b462 | 632 | |
67c3758d | 633 | return generic_drop_inode(inode); |
531ad7d5 JK |
634 | } |
635 | ||
b56ab837 | 636 | int f2fs_inode_dirtied(struct inode *inode) |
b3783873 | 637 | { |
0f18b462 JK |
638 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); |
639 | ||
0f18b462 JK |
640 | spin_lock(&sbi->inode_lock[DIRTY_META]); |
641 | if (is_inode_flag_set(inode, FI_DIRTY_INODE)) { | |
642 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
b56ab837 | 643 | return 1; |
0f18b462 JK |
644 | } |
645 | ||
91942321 | 646 | set_inode_flag(inode, FI_DIRTY_INODE); |
0f18b462 JK |
647 | list_add_tail(&F2FS_I(inode)->gdirty_list, |
648 | &sbi->inode_list[DIRTY_META]); | |
649 | inc_page_count(sbi, F2FS_DIRTY_IMETA); | |
0f18b462 | 650 | stat_inc_dirty_inode(sbi, DIRTY_META); |
338bbfa0 | 651 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
b56ab837 JK |
652 | |
653 | return 0; | |
0f18b462 JK |
654 | } |
655 | ||
656 | void f2fs_inode_synced(struct inode *inode) | |
657 | { | |
658 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
659 | ||
660 | spin_lock(&sbi->inode_lock[DIRTY_META]); | |
661 | if (!is_inode_flag_set(inode, FI_DIRTY_INODE)) { | |
662 | spin_unlock(&sbi->inode_lock[DIRTY_META]); | |
663 | return; | |
664 | } | |
665 | list_del_init(&F2FS_I(inode)->gdirty_list); | |
666 | clear_inode_flag(inode, FI_DIRTY_INODE); | |
26de9b11 | 667 | clear_inode_flag(inode, FI_AUTO_RECOVER); |
0f18b462 | 668 | dec_page_count(sbi, F2FS_DIRTY_IMETA); |
0f18b462 | 669 | stat_dec_dirty_inode(F2FS_I_SB(inode), DIRTY_META); |
338bbfa0 | 670 | spin_unlock(&sbi->inode_lock[DIRTY_META]); |
b3783873 JK |
671 | } |
672 | ||
b56ab837 JK |
673 | /* |
674 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
675 | * | |
676 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
677 | */ | |
678 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
679 | { | |
680 | struct f2fs_sb_info *sbi = F2FS_I_SB(inode); | |
681 | ||
682 | if (inode->i_ino == F2FS_NODE_INO(sbi) || | |
683 | inode->i_ino == F2FS_META_INO(sbi)) | |
684 | return; | |
685 | ||
686 | if (flags == I_DIRTY_TIME) | |
687 | return; | |
688 | ||
689 | if (is_inode_flag_set(inode, FI_AUTO_RECOVER)) | |
690 | clear_inode_flag(inode, FI_AUTO_RECOVER); | |
691 | ||
692 | f2fs_inode_dirtied(inode); | |
693 | } | |
694 | ||
aff063e2 JK |
695 | static void f2fs_i_callback(struct rcu_head *head) |
696 | { | |
697 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
698 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
699 | } | |
700 | ||
25ca923b | 701 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 | 702 | { |
1beba1b3 | 703 | percpu_counter_destroy(&F2FS_I(inode)->dirty_pages); |
aff063e2 JK |
704 | call_rcu(&inode->i_rcu, f2fs_i_callback); |
705 | } | |
706 | ||
523be8a6 JK |
707 | static void destroy_percpu_info(struct f2fs_sb_info *sbi) |
708 | { | |
709 | int i; | |
710 | ||
711 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
712 | percpu_counter_destroy(&sbi->nr_pages[i]); | |
41382ec4 | 713 | percpu_counter_destroy(&sbi->alloc_valid_block_count); |
513c5f37 | 714 | percpu_counter_destroy(&sbi->total_valid_inode_count); |
523be8a6 JK |
715 | } |
716 | ||
aff063e2 JK |
717 | static void f2fs_put_super(struct super_block *sb) |
718 | { | |
719 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
720 | ||
5e176d54 JK |
721 | if (sbi->s_proc) { |
722 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 723 | remove_proc_entry("segment_bits", sbi->s_proc); |
5e176d54 JK |
724 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
725 | } | |
b59d0bae | 726 | kobject_del(&sbi->s_kobj); |
5e176d54 | 727 | |
aff063e2 JK |
728 | stop_gc_thread(sbi); |
729 | ||
2658e50d JK |
730 | /* prevent remaining shrinker jobs */ |
731 | mutex_lock(&sbi->umount_mutex); | |
732 | ||
85dc2f2c JK |
733 | /* |
734 | * We don't need to do checkpoint when superblock is clean. | |
735 | * But, the previous checkpoint was not done by umount, it needs to do | |
736 | * clean checkpoint again. | |
737 | */ | |
caf0047e | 738 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
aaec2b1d | 739 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
740 | struct cp_control cpc = { |
741 | .reason = CP_UMOUNT, | |
742 | }; | |
743 | write_checkpoint(sbi, &cpc); | |
744 | } | |
aff063e2 | 745 | |
eca616f8 JK |
746 | /* write_checkpoint can update stat informaion */ |
747 | f2fs_destroy_stats(sbi); | |
748 | ||
cf779cab JK |
749 | /* |
750 | * normally superblock is clean, so we need to release this. | |
751 | * In addition, EIO will skip do checkpoint, we need this as well. | |
752 | */ | |
74ef9241 | 753 | release_ino_entry(sbi, true); |
4b2fecc8 | 754 | release_discard_addrs(sbi); |
6f12ac25 | 755 | |
2658e50d JK |
756 | f2fs_leave_shrinker(sbi); |
757 | mutex_unlock(&sbi->umount_mutex); | |
758 | ||
17c19120 | 759 | /* our cp_error case, we can wait for any writeback page */ |
f5730184 | 760 | f2fs_flush_merged_bios(sbi); |
17c19120 | 761 | |
aff063e2 JK |
762 | iput(sbi->node_inode); |
763 | iput(sbi->meta_inode); | |
764 | ||
765 | /* destroy f2fs internal modules */ | |
766 | destroy_node_manager(sbi); | |
767 | destroy_segment_manager(sbi); | |
768 | ||
769 | kfree(sbi->ckpt); | |
b59d0bae NJ |
770 | kobject_put(&sbi->s_kobj); |
771 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
772 | |
773 | sb->s_fs_info = NULL; | |
43b6573b KM |
774 | if (sbi->s_chksum_driver) |
775 | crypto_free_shash(sbi->s_chksum_driver); | |
b39f0de2 | 776 | kfree(sbi->raw_super); |
523be8a6 JK |
777 | |
778 | destroy_percpu_info(sbi); | |
aff063e2 JK |
779 | kfree(sbi); |
780 | } | |
781 | ||
782 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
783 | { | |
784 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 785 | int err = 0; |
aff063e2 | 786 | |
a2a4a7e4 NJ |
787 | trace_f2fs_sync_fs(sb, sync); |
788 | ||
b7473754 | 789 | if (sync) { |
d5053a34 JK |
790 | struct cp_control cpc; |
791 | ||
119ee914 JK |
792 | cpc.reason = __get_cp_reason(sbi); |
793 | ||
b7473754 | 794 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 795 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 796 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 797 | } |
05ca3632 | 798 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 799 | |
c34f42e2 | 800 | return err; |
aff063e2 JK |
801 | } |
802 | ||
d6212a5f CL |
803 | static int f2fs_freeze(struct super_block *sb) |
804 | { | |
805 | int err; | |
806 | ||
77888c1e | 807 | if (f2fs_readonly(sb)) |
d6212a5f CL |
808 | return 0; |
809 | ||
810 | err = f2fs_sync_fs(sb, 1); | |
811 | return err; | |
812 | } | |
813 | ||
814 | static int f2fs_unfreeze(struct super_block *sb) | |
815 | { | |
816 | return 0; | |
817 | } | |
818 | ||
aff063e2 JK |
819 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
820 | { | |
821 | struct super_block *sb = dentry->d_sb; | |
822 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
823 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
824 | block_t total_count, user_block_count, start_count, ovp_count; | |
825 | ||
826 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
827 | user_block_count = sbi->user_block_count; | |
828 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
829 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
830 | buf->f_type = F2FS_SUPER_MAGIC; | |
831 | buf->f_bsize = sbi->blocksize; | |
832 | ||
833 | buf->f_blocks = total_count - start_count; | |
3e6d0b4d | 834 | buf->f_bfree = user_block_count - valid_user_blocks(sbi) + ovp_count; |
aff063e2 JK |
835 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); |
836 | ||
c200b1aa CY |
837 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
838 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 839 | |
5a20d339 | 840 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
841 | buf->f_fsid.val[0] = (u32)id; |
842 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
843 | ||
844 | return 0; | |
845 | } | |
846 | ||
847 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
848 | { | |
849 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
850 | ||
6aefd93b JK |
851 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
852 | if (test_opt(sbi, FORCE_FG_GC)) | |
853 | seq_printf(seq, ",background_gc=%s", "sync"); | |
854 | else | |
855 | seq_printf(seq, ",background_gc=%s", "on"); | |
856 | } else { | |
696c018c | 857 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 858 | } |
aff063e2 JK |
859 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
860 | seq_puts(seq, ",disable_roll_forward"); | |
861 | if (test_opt(sbi, DISCARD)) | |
862 | seq_puts(seq, ",discard"); | |
863 | if (test_opt(sbi, NOHEAP)) | |
864 | seq_puts(seq, ",no_heap_alloc"); | |
865 | #ifdef CONFIG_F2FS_FS_XATTR | |
866 | if (test_opt(sbi, XATTR_USER)) | |
867 | seq_puts(seq, ",user_xattr"); | |
868 | else | |
869 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
870 | if (test_opt(sbi, INLINE_XATTR)) |
871 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
872 | #endif |
873 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
874 | if (test_opt(sbi, POSIX_ACL)) | |
875 | seq_puts(seq, ",acl"); | |
876 | else | |
877 | seq_puts(seq, ",noacl"); | |
878 | #endif | |
879 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 880 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
881 | if (test_opt(sbi, INLINE_DATA)) |
882 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
883 | else |
884 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
885 | if (test_opt(sbi, INLINE_DENTRY)) |
886 | seq_puts(seq, ",inline_dentry"); | |
97c1794a CY |
887 | else |
888 | seq_puts(seq, ",noinline_dentry"); | |
b270ad6f | 889 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 890 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
891 | if (test_opt(sbi, NOBARRIER)) |
892 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
893 | if (test_opt(sbi, FASTBOOT)) |
894 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
895 | if (test_opt(sbi, EXTENT_CACHE)) |
896 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
897 | else |
898 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
899 | if (test_opt(sbi, DATA_FLUSH)) |
900 | seq_puts(seq, ",data_flush"); | |
36abef4e JK |
901 | |
902 | seq_puts(seq, ",mode="); | |
903 | if (test_opt(sbi, ADAPTIVE)) | |
904 | seq_puts(seq, "adaptive"); | |
905 | else if (test_opt(sbi, LFS)) | |
906 | seq_puts(seq, "lfs"); | |
aff063e2 JK |
907 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
908 | ||
909 | return 0; | |
910 | } | |
911 | ||
5e176d54 JK |
912 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
913 | { | |
914 | struct super_block *sb = seq->private; | |
915 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
916 | unsigned int total_segs = |
917 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
918 | int i; |
919 | ||
90aa6dc9 CY |
920 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
921 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
922 | ||
5e176d54 | 923 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
924 | struct seg_entry *se = get_seg_entry(sbi, i); |
925 | ||
926 | if ((i % 10) == 0) | |
01a5ad82 | 927 | seq_printf(seq, "%-10d", i); |
90aa6dc9 CY |
928 | seq_printf(seq, "%d|%-3u", se->type, |
929 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
930 | if ((i % 10) == 9 || i == (total_segs - 1)) |
931 | seq_putc(seq, '\n'); | |
5e176d54 | 932 | else |
46c04366 | 933 | seq_putc(seq, ' '); |
5e176d54 | 934 | } |
46c04366 | 935 | |
5e176d54 JK |
936 | return 0; |
937 | } | |
938 | ||
f00d6fa7 JK |
939 | static int segment_bits_seq_show(struct seq_file *seq, void *offset) |
940 | { | |
941 | struct super_block *sb = seq->private; | |
942 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
943 | unsigned int total_segs = | |
944 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
945 | int i, j; | |
946 | ||
947 | seq_puts(seq, "format: segment_type|valid_blocks|bitmaps\n" | |
948 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
949 | ||
950 | for (i = 0; i < total_segs; i++) { | |
951 | struct seg_entry *se = get_seg_entry(sbi, i); | |
952 | ||
953 | seq_printf(seq, "%-10d", i); | |
954 | seq_printf(seq, "%d|%-3u|", se->type, | |
955 | get_valid_blocks(sbi, i, 1)); | |
956 | for (j = 0; j < SIT_VBLOCK_MAP_SIZE; j++) | |
957 | seq_printf(seq, "%x ", se->cur_valid_map[j]); | |
958 | seq_putc(seq, '\n'); | |
959 | } | |
960 | return 0; | |
961 | } | |
962 | ||
b7a15f3d JK |
963 | #define F2FS_PROC_FILE_DEF(_name) \ |
964 | static int _name##_open_fs(struct inode *inode, struct file *file) \ | |
965 | { \ | |
966 | return single_open(file, _name##_seq_show, PDE_DATA(inode)); \ | |
967 | } \ | |
968 | \ | |
969 | static const struct file_operations f2fs_seq_##_name##_fops = { \ | |
b7a15f3d JK |
970 | .open = _name##_open_fs, \ |
971 | .read = seq_read, \ | |
972 | .llseek = seq_lseek, \ | |
973 | .release = single_release, \ | |
5e176d54 JK |
974 | }; |
975 | ||
b7a15f3d | 976 | F2FS_PROC_FILE_DEF(segment_info); |
f00d6fa7 | 977 | F2FS_PROC_FILE_DEF(segment_bits); |
b7a15f3d | 978 | |
498c5e9f YH |
979 | static void default_options(struct f2fs_sb_info *sbi) |
980 | { | |
981 | /* init some FS parameters */ | |
982 | sbi->active_logs = NR_CURSEG_TYPE; | |
983 | ||
984 | set_opt(sbi, BG_GC); | |
985 | set_opt(sbi, INLINE_DATA); | |
97c1794a | 986 | set_opt(sbi, INLINE_DENTRY); |
3e72f721 | 987 | set_opt(sbi, EXTENT_CACHE); |
6d94c74a | 988 | sbi->sb->s_flags |= MS_LAZYTIME; |
69e9e427 | 989 | set_opt(sbi, FLUSH_MERGE); |
52763a4b JK |
990 | if (f2fs_sb_mounted_hmsmr(sbi->sb)) { |
991 | set_opt_mode(sbi, F2FS_MOUNT_LFS); | |
992 | set_opt(sbi, DISCARD); | |
993 | } else { | |
994 | set_opt_mode(sbi, F2FS_MOUNT_ADAPTIVE); | |
995 | } | |
498c5e9f YH |
996 | |
997 | #ifdef CONFIG_F2FS_FS_XATTR | |
998 | set_opt(sbi, XATTR_USER); | |
999 | #endif | |
1000 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
1001 | set_opt(sbi, POSIX_ACL); | |
1002 | #endif | |
1003 | } | |
1004 | ||
696c018c NJ |
1005 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
1006 | { | |
1007 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
1008 | struct f2fs_mount_info org_mount_opt; | |
1009 | int err, active_logs; | |
876dc59e GZ |
1010 | bool need_restart_gc = false; |
1011 | bool need_stop_gc = false; | |
9cd81ce3 | 1012 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
696c018c NJ |
1013 | |
1014 | /* | |
1015 | * Save the old mount options in case we | |
1016 | * need to restore them. | |
1017 | */ | |
1018 | org_mount_opt = sbi->mount_opt; | |
1019 | active_logs = sbi->active_logs; | |
1020 | ||
df728b0f JK |
1021 | /* recover superblocks we couldn't write due to previous RO mount */ |
1022 | if (!(*flags & MS_RDONLY) && is_sbi_flag_set(sbi, SBI_NEED_SB_WRITE)) { | |
1023 | err = f2fs_commit_super(sbi, false); | |
1024 | f2fs_msg(sb, KERN_INFO, | |
1025 | "Try to recover all the superblocks, ret: %d", err); | |
1026 | if (!err) | |
1027 | clear_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
1028 | } | |
1029 | ||
26666c8a | 1030 | sbi->mount_opt.opt = 0; |
498c5e9f | 1031 | default_options(sbi); |
26666c8a | 1032 | |
696c018c NJ |
1033 | /* parse mount options */ |
1034 | err = parse_options(sb, data); | |
1035 | if (err) | |
1036 | goto restore_opts; | |
1037 | ||
1038 | /* | |
1039 | * Previous and new state of filesystem is RO, | |
876dc59e | 1040 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 1041 | */ |
6b2920a5 | 1042 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
1043 | goto skip; |
1044 | ||
9cd81ce3 CY |
1045 | /* disallow enable/disable extent_cache dynamically */ |
1046 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
1047 | err = -EINVAL; | |
1048 | f2fs_msg(sbi->sb, KERN_WARNING, | |
1049 | "switch extent_cache option is not allowed"); | |
1050 | goto restore_opts; | |
1051 | } | |
1052 | ||
696c018c NJ |
1053 | /* |
1054 | * We stop the GC thread if FS is mounted as RO | |
1055 | * or if background_gc = off is passed in mount | |
1056 | * option. Also sync the filesystem. | |
1057 | */ | |
1058 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
1059 | if (sbi->gc_thread) { | |
1060 | stop_gc_thread(sbi); | |
876dc59e | 1061 | need_restart_gc = true; |
696c018c | 1062 | } |
aba291b3 | 1063 | } else if (!sbi->gc_thread) { |
696c018c NJ |
1064 | err = start_gc_thread(sbi); |
1065 | if (err) | |
1066 | goto restore_opts; | |
876dc59e GZ |
1067 | need_stop_gc = true; |
1068 | } | |
1069 | ||
faa0e55b JK |
1070 | if (*flags & MS_RDONLY) { |
1071 | writeback_inodes_sb(sb, WB_REASON_SYNC); | |
1072 | sync_inodes_sb(sb); | |
1073 | ||
1074 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
1075 | set_sbi_flag(sbi, SBI_IS_CLOSE); | |
1076 | f2fs_sync_fs(sb, 1); | |
1077 | clear_sbi_flag(sbi, SBI_IS_CLOSE); | |
1078 | } | |
1079 | ||
876dc59e GZ |
1080 | /* |
1081 | * We stop issue flush thread if FS is mounted as RO | |
1082 | * or if flush_merge is not passed in mount option. | |
1083 | */ | |
1084 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 1085 | destroy_flush_cmd_control(sbi); |
aba291b3 | 1086 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
1087 | err = create_flush_cmd_control(sbi); |
1088 | if (err) | |
a688b9d9 | 1089 | goto restore_gc; |
696c018c NJ |
1090 | } |
1091 | skip: | |
1092 | /* Update the POSIXACL Flag */ | |
df728b0f | 1093 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
696c018c | 1094 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
df728b0f | 1095 | |
696c018c | 1096 | return 0; |
876dc59e GZ |
1097 | restore_gc: |
1098 | if (need_restart_gc) { | |
1099 | if (start_gc_thread(sbi)) | |
1100 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 1101 | "background gc thread has stopped"); |
876dc59e GZ |
1102 | } else if (need_stop_gc) { |
1103 | stop_gc_thread(sbi); | |
1104 | } | |
696c018c NJ |
1105 | restore_opts: |
1106 | sbi->mount_opt = org_mount_opt; | |
1107 | sbi->active_logs = active_logs; | |
1108 | return err; | |
1109 | } | |
1110 | ||
aff063e2 JK |
1111 | static struct super_operations f2fs_sops = { |
1112 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 1113 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
1114 | .destroy_inode = f2fs_destroy_inode, |
1115 | .write_inode = f2fs_write_inode, | |
b3783873 | 1116 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
1117 | .show_options = f2fs_show_options, |
1118 | .evict_inode = f2fs_evict_inode, | |
1119 | .put_super = f2fs_put_super, | |
1120 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
1121 | .freeze_fs = f2fs_freeze, |
1122 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 1123 | .statfs = f2fs_statfs, |
696c018c | 1124 | .remount_fs = f2fs_remount, |
aff063e2 JK |
1125 | }; |
1126 | ||
0b81d077 JK |
1127 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
1128 | static int f2fs_get_context(struct inode *inode, void *ctx, size_t len) | |
1129 | { | |
1130 | return f2fs_getxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
1131 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
1132 | ctx, len, NULL); | |
1133 | } | |
1134 | ||
b5a7aef1 JK |
1135 | static int f2fs_key_prefix(struct inode *inode, u8 **key) |
1136 | { | |
1137 | *key = F2FS_I_SB(inode)->key_prefix; | |
1138 | return F2FS_I_SB(inode)->key_prefix_size; | |
1139 | } | |
1140 | ||
0b81d077 JK |
1141 | static int f2fs_set_context(struct inode *inode, const void *ctx, size_t len, |
1142 | void *fs_data) | |
1143 | { | |
1144 | return f2fs_setxattr(inode, F2FS_XATTR_INDEX_ENCRYPTION, | |
1145 | F2FS_XATTR_NAME_ENCRYPTION_CONTEXT, | |
1146 | ctx, len, fs_data, XATTR_CREATE); | |
1147 | } | |
1148 | ||
1149 | static unsigned f2fs_max_namelen(struct inode *inode) | |
1150 | { | |
1151 | return S_ISLNK(inode->i_mode) ? | |
1152 | inode->i_sb->s_blocksize : F2FS_NAME_LEN; | |
1153 | } | |
1154 | ||
1155 | static struct fscrypt_operations f2fs_cryptops = { | |
1156 | .get_context = f2fs_get_context, | |
b5a7aef1 | 1157 | .key_prefix = f2fs_key_prefix, |
0b81d077 JK |
1158 | .set_context = f2fs_set_context, |
1159 | .is_encrypted = f2fs_encrypted_inode, | |
1160 | .empty_dir = f2fs_empty_dir, | |
1161 | .max_namelen = f2fs_max_namelen, | |
1162 | }; | |
1163 | #else | |
1164 | static struct fscrypt_operations f2fs_cryptops = { | |
1165 | .is_encrypted = f2fs_encrypted_inode, | |
1166 | }; | |
1167 | #endif | |
1168 | ||
aff063e2 JK |
1169 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
1170 | u64 ino, u32 generation) | |
1171 | { | |
1172 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
1173 | struct inode *inode; | |
1174 | ||
d6b7d4b3 | 1175 | if (check_nid_range(sbi, ino)) |
910bb12d | 1176 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
1177 | |
1178 | /* | |
1179 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
1180 | * However f2fs_iget currently does appropriate checks to handle stale | |
1181 | * inodes so everything is OK. | |
1182 | */ | |
1183 | inode = f2fs_iget(sb, ino); | |
1184 | if (IS_ERR(inode)) | |
1185 | return ERR_CAST(inode); | |
6bacf52f | 1186 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
1187 | /* we didn't find the right inode.. */ |
1188 | iput(inode); | |
1189 | return ERR_PTR(-ESTALE); | |
1190 | } | |
1191 | return inode; | |
1192 | } | |
1193 | ||
1194 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
1195 | int fh_len, int fh_type) | |
1196 | { | |
1197 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
1198 | f2fs_nfs_get_inode); | |
1199 | } | |
1200 | ||
1201 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
1202 | int fh_len, int fh_type) | |
1203 | { | |
1204 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
1205 | f2fs_nfs_get_inode); | |
1206 | } | |
1207 | ||
1208 | static const struct export_operations f2fs_export_ops = { | |
1209 | .fh_to_dentry = f2fs_fh_to_dentry, | |
1210 | .fh_to_parent = f2fs_fh_to_parent, | |
1211 | .get_parent = f2fs_get_parent, | |
1212 | }; | |
1213 | ||
e0afc4d6 | 1214 | static loff_t max_file_blocks(void) |
aff063e2 | 1215 | { |
de93653f | 1216 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
1217 | loff_t leaf_count = ADDRS_PER_BLOCK; |
1218 | ||
1219 | /* two direct node blocks */ | |
1220 | result += (leaf_count * 2); | |
1221 | ||
1222 | /* two indirect node blocks */ | |
1223 | leaf_count *= NIDS_PER_BLOCK; | |
1224 | result += (leaf_count * 2); | |
1225 | ||
1226 | /* one double indirect node block */ | |
1227 | leaf_count *= NIDS_PER_BLOCK; | |
1228 | result += leaf_count; | |
1229 | ||
aff063e2 JK |
1230 | return result; |
1231 | } | |
1232 | ||
fd694733 JK |
1233 | static int __f2fs_commit_super(struct buffer_head *bh, |
1234 | struct f2fs_super_block *super) | |
1235 | { | |
1236 | lock_buffer(bh); | |
1237 | if (super) | |
1238 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); | |
1239 | set_buffer_uptodate(bh); | |
1240 | set_buffer_dirty(bh); | |
1241 | unlock_buffer(bh); | |
1242 | ||
1243 | /* it's rare case, we can do fua all the time */ | |
1244 | return __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); | |
1245 | } | |
1246 | ||
df728b0f | 1247 | static inline bool sanity_check_area_boundary(struct f2fs_sb_info *sbi, |
fd694733 | 1248 | struct buffer_head *bh) |
9a59b62f | 1249 | { |
fd694733 JK |
1250 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1251 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1252 | struct super_block *sb = sbi->sb; |
9a59b62f CY |
1253 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); |
1254 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
1255 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
1256 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
1257 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
1258 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
1259 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
1260 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
1261 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
1262 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
1263 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
1264 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
1265 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
fd694733 JK |
1266 | u64 main_end_blkaddr = main_blkaddr + |
1267 | (segment_count_main << log_blocks_per_seg); | |
1268 | u64 seg_end_blkaddr = segment0_blkaddr + | |
1269 | (segment_count << log_blocks_per_seg); | |
9a59b62f CY |
1270 | |
1271 | if (segment0_blkaddr != cp_blkaddr) { | |
1272 | f2fs_msg(sb, KERN_INFO, | |
1273 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
1274 | segment0_blkaddr, cp_blkaddr); | |
1275 | return true; | |
1276 | } | |
1277 | ||
1278 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
1279 | sit_blkaddr) { | |
1280 | f2fs_msg(sb, KERN_INFO, | |
1281 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
1282 | cp_blkaddr, sit_blkaddr, | |
1283 | segment_count_ckpt << log_blocks_per_seg); | |
1284 | return true; | |
1285 | } | |
1286 | ||
1287 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
1288 | nat_blkaddr) { | |
1289 | f2fs_msg(sb, KERN_INFO, | |
1290 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
1291 | sit_blkaddr, nat_blkaddr, | |
1292 | segment_count_sit << log_blocks_per_seg); | |
1293 | return true; | |
1294 | } | |
1295 | ||
1296 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
1297 | ssa_blkaddr) { | |
1298 | f2fs_msg(sb, KERN_INFO, | |
1299 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1300 | nat_blkaddr, ssa_blkaddr, | |
1301 | segment_count_nat << log_blocks_per_seg); | |
1302 | return true; | |
1303 | } | |
1304 | ||
1305 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1306 | main_blkaddr) { | |
1307 | f2fs_msg(sb, KERN_INFO, | |
1308 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1309 | ssa_blkaddr, main_blkaddr, | |
1310 | segment_count_ssa << log_blocks_per_seg); | |
1311 | return true; | |
1312 | } | |
1313 | ||
fd694733 | 1314 | if (main_end_blkaddr > seg_end_blkaddr) { |
9a59b62f | 1315 | f2fs_msg(sb, KERN_INFO, |
fd694733 | 1316 | "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)", |
9a59b62f | 1317 | main_blkaddr, |
fd694733 JK |
1318 | segment0_blkaddr + |
1319 | (segment_count << log_blocks_per_seg), | |
9a59b62f CY |
1320 | segment_count_main << log_blocks_per_seg); |
1321 | return true; | |
fd694733 JK |
1322 | } else if (main_end_blkaddr < seg_end_blkaddr) { |
1323 | int err = 0; | |
1324 | char *res; | |
1325 | ||
1326 | /* fix in-memory information all the time */ | |
1327 | raw_super->segment_count = cpu_to_le32((main_end_blkaddr - | |
1328 | segment0_blkaddr) >> log_blocks_per_seg); | |
1329 | ||
1330 | if (f2fs_readonly(sb) || bdev_read_only(sb->s_bdev)) { | |
df728b0f | 1331 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); |
fd694733 JK |
1332 | res = "internally"; |
1333 | } else { | |
1334 | err = __f2fs_commit_super(bh, NULL); | |
1335 | res = err ? "failed" : "done"; | |
1336 | } | |
1337 | f2fs_msg(sb, KERN_INFO, | |
1338 | "Fix alignment : %s, start(%u) end(%u) block(%u)", | |
1339 | res, main_blkaddr, | |
1340 | segment0_blkaddr + | |
1341 | (segment_count << log_blocks_per_seg), | |
1342 | segment_count_main << log_blocks_per_seg); | |
1343 | if (err) | |
1344 | return true; | |
9a59b62f | 1345 | } |
9a59b62f CY |
1346 | return false; |
1347 | } | |
1348 | ||
df728b0f | 1349 | static int sanity_check_raw_super(struct f2fs_sb_info *sbi, |
fd694733 | 1350 | struct buffer_head *bh) |
aff063e2 | 1351 | { |
fd694733 JK |
1352 | struct f2fs_super_block *raw_super = (struct f2fs_super_block *) |
1353 | (bh->b_data + F2FS_SUPER_OFFSET); | |
df728b0f | 1354 | struct super_block *sb = sbi->sb; |
aff063e2 JK |
1355 | unsigned int blocksize; |
1356 | ||
a07ef784 NJ |
1357 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1358 | f2fs_msg(sb, KERN_INFO, | |
1359 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1360 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1361 | return 1; |
a07ef784 | 1362 | } |
aff063e2 | 1363 | |
5c9b4692 | 1364 | /* Currently, support only 4KB page cache size */ |
09cbfeaf | 1365 | if (F2FS_BLKSIZE != PAGE_SIZE) { |
5c9b4692 | 1366 | f2fs_msg(sb, KERN_INFO, |
14d7e9de | 1367 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
09cbfeaf | 1368 | PAGE_SIZE); |
5c9b4692 | 1369 | return 1; |
1370 | } | |
1371 | ||
aff063e2 JK |
1372 | /* Currently, support only 4KB block size */ |
1373 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1374 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1375 | f2fs_msg(sb, KERN_INFO, |
1376 | "Invalid blocksize (%u), supports only 4KB\n", | |
1377 | blocksize); | |
aff063e2 | 1378 | return 1; |
a07ef784 | 1379 | } |
5c9b4692 | 1380 | |
9a59b62f CY |
1381 | /* check log blocks per segment */ |
1382 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1383 | f2fs_msg(sb, KERN_INFO, | |
1384 | "Invalid log blocks per segment (%u)\n", | |
1385 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1386 | return 1; | |
1387 | } | |
1388 | ||
55cf9cb6 CY |
1389 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1390 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1391 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1392 | le32_to_cpu(raw_super->log_sectorsize) < | |
1393 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1394 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1395 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1396 | return 1; |
a07ef784 | 1397 | } |
55cf9cb6 CY |
1398 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1399 | le32_to_cpu(raw_super->log_sectorsize) != | |
1400 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1401 | f2fs_msg(sb, KERN_INFO, | |
1402 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1403 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1404 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1405 | return 1; |
a07ef784 | 1406 | } |
9a59b62f CY |
1407 | |
1408 | /* check reserved ino info */ | |
1409 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1410 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1411 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1412 | f2fs_msg(sb, KERN_INFO, | |
1413 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1414 | le32_to_cpu(raw_super->node_ino), | |
1415 | le32_to_cpu(raw_super->meta_ino), | |
1416 | le32_to_cpu(raw_super->root_ino)); | |
1417 | return 1; | |
1418 | } | |
1419 | ||
1420 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ | |
df728b0f | 1421 | if (sanity_check_area_boundary(sbi, bh)) |
9a59b62f CY |
1422 | return 1; |
1423 | ||
aff063e2 JK |
1424 | return 0; |
1425 | } | |
1426 | ||
984ec63c | 1427 | int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1428 | { |
1429 | unsigned int total, fsmeta; | |
577e3495 JK |
1430 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1431 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
1432 | |
1433 | total = le32_to_cpu(raw_super->segment_count); | |
1434 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1435 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1436 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1437 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1438 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1439 | ||
6bacf52f | 1440 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1441 | return 1; |
577e3495 | 1442 | |
1e968fdf | 1443 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1444 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1445 | return 1; | |
1446 | } | |
aff063e2 JK |
1447 | return 0; |
1448 | } | |
1449 | ||
1450 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1451 | { | |
1452 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
aff063e2 JK |
1453 | |
1454 | sbi->log_sectors_per_block = | |
1455 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1456 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1457 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1458 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1459 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1460 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1461 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1462 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1463 | sbi->total_node_count = | |
1464 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1465 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1466 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1467 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1468 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1469 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1470 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 | 1471 | |
ab9fa662 | 1472 | sbi->dir_level = DEF_DIR_LEVEL; |
6beceb54 | 1473 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1474 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1475 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d JK |
1476 | |
1477 | INIT_LIST_HEAD(&sbi->s_list); | |
1478 | mutex_init(&sbi->umount_mutex); | |
7dfeaa32 JK |
1479 | mutex_init(&sbi->wio_mutex[NODE]); |
1480 | mutex_init(&sbi->wio_mutex[DATA]); | |
aaec2b1d | 1481 | spin_lock_init(&sbi->cp_lock); |
b5a7aef1 JK |
1482 | |
1483 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
1484 | memcpy(sbi->key_prefix, F2FS_KEY_DESC_PREFIX, | |
1485 | F2FS_KEY_DESC_PREFIX_SIZE); | |
1486 | sbi->key_prefix_size = F2FS_KEY_DESC_PREFIX_SIZE; | |
1487 | #endif | |
aff063e2 JK |
1488 | } |
1489 | ||
523be8a6 JK |
1490 | static int init_percpu_info(struct f2fs_sb_info *sbi) |
1491 | { | |
1492 | int i, err; | |
1493 | ||
1494 | for (i = 0; i < NR_COUNT_TYPE; i++) { | |
1495 | err = percpu_counter_init(&sbi->nr_pages[i], 0, GFP_KERNEL); | |
1496 | if (err) | |
1497 | return err; | |
1498 | } | |
41382ec4 | 1499 | |
513c5f37 JK |
1500 | err = percpu_counter_init(&sbi->alloc_valid_block_count, 0, GFP_KERNEL); |
1501 | if (err) | |
1502 | return err; | |
1503 | ||
1504 | return percpu_counter_init(&sbi->total_valid_inode_count, 0, | |
41382ec4 | 1505 | GFP_KERNEL); |
523be8a6 JK |
1506 | } |
1507 | ||
9076a75f GZ |
1508 | /* |
1509 | * Read f2fs raw super block. | |
2b39e907 SL |
1510 | * Because we have two copies of super block, so read both of them |
1511 | * to get the first valid one. If any one of them is broken, we pass | |
1512 | * them recovery flag back to the caller. | |
9076a75f | 1513 | */ |
df728b0f | 1514 | static int read_raw_super_block(struct f2fs_sb_info *sbi, |
9076a75f | 1515 | struct f2fs_super_block **raw_super, |
e8240f65 | 1516 | int *valid_super_block, int *recovery) |
14d7e9de | 1517 | { |
df728b0f | 1518 | struct super_block *sb = sbi->sb; |
2b39e907 | 1519 | int block; |
e8240f65 | 1520 | struct buffer_head *bh; |
fd694733 | 1521 | struct f2fs_super_block *super; |
da554e48 | 1522 | int err = 0; |
14d7e9de | 1523 | |
b39f0de2 YH |
1524 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1525 | if (!super) | |
1526 | return -ENOMEM; | |
2b39e907 SL |
1527 | |
1528 | for (block = 0; block < 2; block++) { | |
1529 | bh = sb_bread(sb, block); | |
1530 | if (!bh) { | |
1531 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", | |
9076a75f | 1532 | block + 1); |
2b39e907 SL |
1533 | err = -EIO; |
1534 | continue; | |
1535 | } | |
14d7e9de | 1536 | |
2b39e907 | 1537 | /* sanity checking of raw super */ |
df728b0f | 1538 | if (sanity_check_raw_super(sbi, bh)) { |
2b39e907 SL |
1539 | f2fs_msg(sb, KERN_ERR, |
1540 | "Can't find valid F2FS filesystem in %dth superblock", | |
1541 | block + 1); | |
1542 | err = -EINVAL; | |
1543 | brelse(bh); | |
1544 | continue; | |
1545 | } | |
14d7e9de | 1546 | |
2b39e907 | 1547 | if (!*raw_super) { |
fd694733 JK |
1548 | memcpy(super, bh->b_data + F2FS_SUPER_OFFSET, |
1549 | sizeof(*super)); | |
2b39e907 SL |
1550 | *valid_super_block = block; |
1551 | *raw_super = super; | |
1552 | } | |
1553 | brelse(bh); | |
da554e48 | 1554 | } |
1555 | ||
2b39e907 SL |
1556 | /* Fail to read any one of the superblocks*/ |
1557 | if (err < 0) | |
1558 | *recovery = 1; | |
da554e48 | 1559 | |
da554e48 | 1560 | /* No valid superblock */ |
2b39e907 | 1561 | if (!*raw_super) |
b39f0de2 | 1562 | kfree(super); |
2b39e907 SL |
1563 | else |
1564 | err = 0; | |
da554e48 | 1565 | |
2b39e907 | 1566 | return err; |
14d7e9de | 1567 | } |
1568 | ||
fd694733 | 1569 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
26d815ad | 1570 | { |
5d909cdb | 1571 | struct buffer_head *bh; |
26d815ad JK |
1572 | int err; |
1573 | ||
df728b0f JK |
1574 | if ((recover && f2fs_readonly(sbi->sb)) || |
1575 | bdev_read_only(sbi->sb->s_bdev)) { | |
1576 | set_sbi_flag(sbi, SBI_NEED_SB_WRITE); | |
f2353d7b | 1577 | return -EROFS; |
df728b0f | 1578 | } |
f2353d7b | 1579 | |
fd694733 JK |
1580 | /* write back-up superblock first */ |
1581 | bh = sb_getblk(sbi->sb, sbi->valid_super_block ? 0: 1); | |
5d909cdb JK |
1582 | if (!bh) |
1583 | return -EIO; | |
fd694733 | 1584 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); |
5d909cdb | 1585 | brelse(bh); |
c5bda1c8 CY |
1586 | |
1587 | /* if we are in recovery path, skip writing valid superblock */ | |
1588 | if (recover || err) | |
5d909cdb | 1589 | return err; |
26d815ad JK |
1590 | |
1591 | /* write current valid superblock */ | |
fd694733 JK |
1592 | bh = sb_getblk(sbi->sb, sbi->valid_super_block); |
1593 | if (!bh) | |
1594 | return -EIO; | |
1595 | err = __f2fs_commit_super(bh, F2FS_RAW_SUPER(sbi)); | |
1596 | brelse(bh); | |
1597 | return err; | |
26d815ad JK |
1598 | } |
1599 | ||
aff063e2 JK |
1600 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1601 | { | |
1602 | struct f2fs_sb_info *sbi; | |
da554e48 | 1603 | struct f2fs_super_block *raw_super; |
aff063e2 | 1604 | struct inode *root; |
99e3e858 | 1605 | int err; |
2adc3505 | 1606 | bool retry = true, need_fsck = false; |
dabc4a5c | 1607 | char *options = NULL; |
e8240f65 | 1608 | int recovery, i, valid_super_block; |
8f1dbbbb | 1609 | struct curseg_info *seg_i; |
aff063e2 | 1610 | |
ed2e621a | 1611 | try_onemore: |
da554e48 | 1612 | err = -EINVAL; |
1613 | raw_super = NULL; | |
e8240f65 | 1614 | valid_super_block = -1; |
da554e48 | 1615 | recovery = 0; |
1616 | ||
aff063e2 JK |
1617 | /* allocate memory for f2fs-specific super block info */ |
1618 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1619 | if (!sbi) | |
1620 | return -ENOMEM; | |
1621 | ||
df728b0f JK |
1622 | sbi->sb = sb; |
1623 | ||
43b6573b KM |
1624 | /* Load the checksum driver */ |
1625 | sbi->s_chksum_driver = crypto_alloc_shash("crc32", 0, 0); | |
1626 | if (IS_ERR(sbi->s_chksum_driver)) { | |
1627 | f2fs_msg(sb, KERN_ERR, "Cannot load crc32 driver."); | |
1628 | err = PTR_ERR(sbi->s_chksum_driver); | |
1629 | sbi->s_chksum_driver = NULL; | |
1630 | goto free_sbi; | |
1631 | } | |
1632 | ||
ff9234ad | 1633 | /* set a block size */ |
6bacf52f | 1634 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1635 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1636 | goto free_sbi; |
a07ef784 | 1637 | } |
aff063e2 | 1638 | |
df728b0f | 1639 | err = read_raw_super_block(sbi, &raw_super, &valid_super_block, |
e8240f65 | 1640 | &recovery); |
9076a75f GZ |
1641 | if (err) |
1642 | goto free_sbi; | |
1643 | ||
5fb08372 | 1644 | sb->s_fs_info = sbi; |
52763a4b JK |
1645 | sbi->raw_super = raw_super; |
1646 | ||
498c5e9f | 1647 | default_options(sbi); |
aff063e2 | 1648 | /* parse mount options */ |
dabc4a5c JK |
1649 | options = kstrdup((const char *)data, GFP_KERNEL); |
1650 | if (data && !options) { | |
1651 | err = -ENOMEM; | |
aff063e2 | 1652 | goto free_sb_buf; |
dabc4a5c JK |
1653 | } |
1654 | ||
1655 | err = parse_options(sb, options); | |
1656 | if (err) | |
1657 | goto free_options; | |
aff063e2 | 1658 | |
e0afc4d6 CY |
1659 | sbi->max_file_blocks = max_file_blocks(); |
1660 | sb->s_maxbytes = sbi->max_file_blocks << | |
1661 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1662 | sb->s_max_links = F2FS_LINK_MAX; |
1663 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1664 | ||
1665 | sb->s_op = &f2fs_sops; | |
0b81d077 | 1666 | sb->s_cop = &f2fs_cryptops; |
aff063e2 JK |
1667 | sb->s_xattr = f2fs_xattr_handlers; |
1668 | sb->s_export_op = &f2fs_export_ops; | |
1669 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1670 | sb->s_time_gran = 1; |
1671 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1672 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1673 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1674 | ||
1675 | /* init f2fs-specific super block info */ | |
e8240f65 | 1676 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1677 | mutex_init(&sbi->gc_mutex); |
aff063e2 | 1678 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1679 | init_rwsem(&sbi->node_write); |
315df839 JK |
1680 | |
1681 | /* disallow all the data/node/meta page writes */ | |
1682 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1683 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1684 | |
df0f8dc0 | 1685 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1686 | sbi->read_io.sbi = sbi; |
1687 | sbi->read_io.bio = NULL; | |
1688 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1689 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1690 | sbi->write_io[i].sbi = sbi; |
1691 | sbi->write_io[i].bio = NULL; | |
1692 | } | |
971767ca | 1693 | |
b873b798 | 1694 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1695 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1696 | init_sb_info(sbi); |
1697 | ||
523be8a6 JK |
1698 | err = init_percpu_info(sbi); |
1699 | if (err) | |
1700 | goto free_options; | |
1701 | ||
aff063e2 JK |
1702 | /* get an inode for meta space */ |
1703 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1704 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1705 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1706 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1707 | goto free_options; |
aff063e2 JK |
1708 | } |
1709 | ||
1710 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1711 | if (err) { |
1712 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1713 | goto free_meta_inode; |
a07ef784 | 1714 | } |
aff063e2 | 1715 | |
aff063e2 JK |
1716 | sbi->total_valid_node_count = |
1717 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
513c5f37 JK |
1718 | percpu_counter_set(&sbi->total_valid_inode_count, |
1719 | le32_to_cpu(sbi->ckpt->valid_inode_count)); | |
aff063e2 JK |
1720 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); |
1721 | sbi->total_valid_block_count = | |
1722 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1723 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
41382ec4 | 1724 | |
c227f912 CY |
1725 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1726 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1727 | spin_lock_init(&sbi->inode_lock[i]); | |
1728 | } | |
aff063e2 | 1729 | |
1dcc336b CY |
1730 | init_extent_cache_info(sbi); |
1731 | ||
6451e041 | 1732 | init_ino_entry_info(sbi); |
aff063e2 JK |
1733 | |
1734 | /* setup f2fs internal modules */ | |
1735 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1736 | if (err) { |
1737 | f2fs_msg(sb, KERN_ERR, | |
1738 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1739 | goto free_sm; |
a07ef784 | 1740 | } |
aff063e2 | 1741 | err = build_node_manager(sbi); |
a07ef784 NJ |
1742 | if (err) { |
1743 | f2fs_msg(sb, KERN_ERR, | |
1744 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1745 | goto free_nm; |
a07ef784 | 1746 | } |
aff063e2 | 1747 | |
8f1dbbbb SL |
1748 | /* For write statistics */ |
1749 | if (sb->s_bdev->bd_part) | |
1750 | sbi->sectors_written_start = | |
1751 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1752 | ||
1753 | /* Read accumulated write IO statistics if exists */ | |
1754 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1755 | if (__exist_node_summaries(sbi)) | |
1756 | sbi->kbytes_written = | |
b2dde6fc | 1757 | le64_to_cpu(seg_i->journal->info.kbytes_written); |
8f1dbbbb | 1758 | |
aff063e2 JK |
1759 | build_gc_manager(sbi); |
1760 | ||
1761 | /* get an inode for node space */ | |
1762 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1763 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1764 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1765 | err = PTR_ERR(sbi->node_inode); |
1766 | goto free_nm; | |
1767 | } | |
1768 | ||
2658e50d JK |
1769 | f2fs_join_shrinker(sbi); |
1770 | ||
aff063e2 | 1771 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1772 | err = recover_orphan_inodes(sbi); |
1773 | if (err) | |
1774 | goto free_node_inode; | |
aff063e2 JK |
1775 | |
1776 | /* read root inode and dentry */ | |
1777 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1778 | if (IS_ERR(root)) { | |
a07ef784 | 1779 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1780 | err = PTR_ERR(root); |
1781 | goto free_node_inode; | |
1782 | } | |
8f99a946 | 1783 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1784 | iput(root); |
8f99a946 | 1785 | err = -EINVAL; |
9d847950 | 1786 | goto free_node_inode; |
8f99a946 | 1787 | } |
aff063e2 JK |
1788 | |
1789 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1790 | if (!sb->s_root) { | |
1791 | err = -ENOMEM; | |
1792 | goto free_root_inode; | |
1793 | } | |
1794 | ||
aff063e2 JK |
1795 | err = f2fs_build_stats(sbi); |
1796 | if (err) | |
6437d1b0 | 1797 | goto free_root_inode; |
aff063e2 | 1798 | |
5e176d54 JK |
1799 | if (f2fs_proc_root) |
1800 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1801 | ||
f00d6fa7 | 1802 | if (sbi->s_proc) { |
5e176d54 JK |
1803 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, |
1804 | &f2fs_seq_segment_info_fops, sb); | |
f00d6fa7 JK |
1805 | proc_create_data("segment_bits", S_IRUGO, sbi->s_proc, |
1806 | &f2fs_seq_segment_bits_fops, sb); | |
1807 | } | |
5e176d54 | 1808 | |
b59d0bae NJ |
1809 | sbi->s_kobj.kset = f2fs_kset; |
1810 | init_completion(&sbi->s_kobj_unregister); | |
1811 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1812 | "%s", sb->s_id); | |
1813 | if (err) | |
6437d1b0 | 1814 | goto free_proc; |
b59d0bae | 1815 | |
6437d1b0 JK |
1816 | /* recover fsynced data */ |
1817 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1818 | /* |
1819 | * mount should be failed, when device has readonly mode, and | |
1820 | * previous checkpoint was not done by clean system shutdown. | |
1821 | */ | |
1822 | if (bdev_read_only(sb->s_bdev) && | |
aaec2b1d | 1823 | !is_set_ckpt_flags(sbi, CP_UMOUNT_FLAG)) { |
081d78c2 JK |
1824 | err = -EROFS; |
1825 | goto free_kobj; | |
1826 | } | |
2adc3505 CY |
1827 | |
1828 | if (need_fsck) | |
1829 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1830 | ||
a468f0ef JK |
1831 | if (!retry) |
1832 | goto skip_recovery; | |
1833 | ||
6781eabb JK |
1834 | err = recover_fsync_data(sbi, false); |
1835 | if (err < 0) { | |
2adc3505 | 1836 | need_fsck = true; |
6437d1b0 | 1837 | f2fs_msg(sb, KERN_ERR, |
99e3e858 | 1838 | "Cannot recover all fsync data errno=%d", err); |
ed2e621a JK |
1839 | goto free_kobj; |
1840 | } | |
6781eabb JK |
1841 | } else { |
1842 | err = recover_fsync_data(sbi, true); | |
1843 | ||
1844 | if (!f2fs_readonly(sb) && err > 0) { | |
1845 | err = -EINVAL; | |
1846 | f2fs_msg(sb, KERN_ERR, | |
1847 | "Need to recover fsync data"); | |
1848 | goto free_kobj; | |
1849 | } | |
6437d1b0 | 1850 | } |
a468f0ef | 1851 | skip_recovery: |
315df839 JK |
1852 | /* recover_fsync_data() cleared this already */ |
1853 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1854 | |
6437d1b0 JK |
1855 | /* |
1856 | * If filesystem is not mounted as read-only then | |
1857 | * do start the gc_thread. | |
1858 | */ | |
6c029932 | 1859 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1860 | /* After POR, we can run background GC thread.*/ |
1861 | err = start_gc_thread(sbi); | |
1862 | if (err) | |
1863 | goto free_kobj; | |
1864 | } | |
dabc4a5c | 1865 | kfree(options); |
da554e48 | 1866 | |
1867 | /* recover broken superblock */ | |
f2353d7b | 1868 | if (recovery) { |
41214b3c CY |
1869 | err = f2fs_commit_super(sbi, true); |
1870 | f2fs_msg(sb, KERN_INFO, | |
99e3e858 | 1871 | "Try to recover %dth superblock, ret: %d", |
41214b3c | 1872 | sbi->valid_super_block ? 1 : 2, err); |
da554e48 | 1873 | } |
1874 | ||
6beceb54 | 1875 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1876 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1877 | return 0; |
6437d1b0 JK |
1878 | |
1879 | free_kobj: | |
0f18b462 | 1880 | f2fs_sync_inode_meta(sbi); |
6437d1b0 | 1881 | kobject_del(&sbi->s_kobj); |
29ba108d CY |
1882 | kobject_put(&sbi->s_kobj); |
1883 | wait_for_completion(&sbi->s_kobj_unregister); | |
6437d1b0 | 1884 | free_proc: |
1d15bd20 CY |
1885 | if (sbi->s_proc) { |
1886 | remove_proc_entry("segment_info", sbi->s_proc); | |
f00d6fa7 | 1887 | remove_proc_entry("segment_bits", sbi->s_proc); |
1d15bd20 CY |
1888 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
1889 | } | |
1890 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1891 | free_root_inode: |
1892 | dput(sb->s_root); | |
1893 | sb->s_root = NULL; | |
1894 | free_node_inode: | |
2658e50d JK |
1895 | mutex_lock(&sbi->umount_mutex); |
1896 | f2fs_leave_shrinker(sbi); | |
aff063e2 | 1897 | iput(sbi->node_inode); |
2658e50d | 1898 | mutex_unlock(&sbi->umount_mutex); |
aff063e2 JK |
1899 | free_nm: |
1900 | destroy_node_manager(sbi); | |
1901 | free_sm: | |
1902 | destroy_segment_manager(sbi); | |
aff063e2 JK |
1903 | kfree(sbi->ckpt); |
1904 | free_meta_inode: | |
1905 | make_bad_inode(sbi->meta_inode); | |
1906 | iput(sbi->meta_inode); | |
dabc4a5c | 1907 | free_options: |
523be8a6 | 1908 | destroy_percpu_info(sbi); |
dabc4a5c | 1909 | kfree(options); |
aff063e2 | 1910 | free_sb_buf: |
b39f0de2 | 1911 | kfree(raw_super); |
aff063e2 | 1912 | free_sbi: |
43b6573b KM |
1913 | if (sbi->s_chksum_driver) |
1914 | crypto_free_shash(sbi->s_chksum_driver); | |
aff063e2 | 1915 | kfree(sbi); |
ed2e621a JK |
1916 | |
1917 | /* give only one another chance */ | |
1918 | if (retry) { | |
9df47ba7 | 1919 | retry = false; |
ed2e621a JK |
1920 | shrink_dcache_sb(sb); |
1921 | goto try_onemore; | |
1922 | } | |
aff063e2 JK |
1923 | return err; |
1924 | } | |
1925 | ||
1926 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1927 | const char *dev_name, void *data) | |
1928 | { | |
1929 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1930 | } | |
1931 | ||
30a5537f JK |
1932 | static void kill_f2fs_super(struct super_block *sb) |
1933 | { | |
1934 | if (sb->s_root) | |
caf0047e | 1935 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1936 | kill_block_super(sb); |
1937 | } | |
1938 | ||
aff063e2 JK |
1939 | static struct file_system_type f2fs_fs_type = { |
1940 | .owner = THIS_MODULE, | |
1941 | .name = "f2fs", | |
1942 | .mount = f2fs_mount, | |
30a5537f | 1943 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1944 | .fs_flags = FS_REQUIRES_DEV, |
1945 | }; | |
7f78e035 | 1946 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1947 | |
6e6093a8 | 1948 | static int __init init_inodecache(void) |
aff063e2 | 1949 | { |
5d097056 VD |
1950 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1951 | sizeof(struct f2fs_inode_info), 0, | |
1952 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1953 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1954 | return -ENOMEM; |
1955 | return 0; | |
1956 | } | |
1957 | ||
1958 | static void destroy_inodecache(void) | |
1959 | { | |
1960 | /* | |
1961 | * Make sure all delayed rcu free inodes are flushed before we | |
1962 | * destroy cache. | |
1963 | */ | |
1964 | rcu_barrier(); | |
1965 | kmem_cache_destroy(f2fs_inode_cachep); | |
1966 | } | |
1967 | ||
1968 | static int __init init_f2fs_fs(void) | |
1969 | { | |
1970 | int err; | |
1971 | ||
c0508650 JK |
1972 | f2fs_build_trace_ios(); |
1973 | ||
aff063e2 JK |
1974 | err = init_inodecache(); |
1975 | if (err) | |
1976 | goto fail; | |
1977 | err = create_node_manager_caches(); | |
1978 | if (err) | |
9890ff3f | 1979 | goto free_inodecache; |
7fd9e544 | 1980 | err = create_segment_manager_caches(); |
aff063e2 | 1981 | if (err) |
9890ff3f | 1982 | goto free_node_manager_caches; |
aff063e2 JK |
1983 | err = create_checkpoint_caches(); |
1984 | if (err) | |
06292073 | 1985 | goto free_segment_manager_caches; |
1dcc336b CY |
1986 | err = create_extent_cache(); |
1987 | if (err) | |
1988 | goto free_checkpoint_caches; | |
b59d0bae | 1989 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1990 | if (!f2fs_kset) { |
1991 | err = -ENOMEM; | |
1dcc336b | 1992 | goto free_extent_cache; |
6e6b978c | 1993 | } |
08796897 SY |
1994 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
1995 | f2fs_fault_inject.kset = f2fs_kset; | |
1996 | f2fs_build_fault_attr(0); | |
1997 | err = kobject_init_and_add(&f2fs_fault_inject, &f2fs_fault_ktype, | |
1998 | NULL, "fault_injection"); | |
1999 | if (err) { | |
2000 | f2fs_fault_inject.kset = NULL; | |
2001 | goto free_kset; | |
2002 | } | |
2003 | #endif | |
2658e50d | 2004 | err = register_shrinker(&f2fs_shrinker_info); |
cfc4d971 | 2005 | if (err) |
0b81d077 | 2006 | goto free_kset; |
2658e50d JK |
2007 | |
2008 | err = register_filesystem(&f2fs_fs_type); | |
2009 | if (err) | |
2010 | goto free_shrinker; | |
787c7b8c CY |
2011 | err = f2fs_create_root_stats(); |
2012 | if (err) | |
2013 | goto free_filesystem; | |
5e176d54 | 2014 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
2015 | return 0; |
2016 | ||
787c7b8c CY |
2017 | free_filesystem: |
2018 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
2019 | free_shrinker: |
2020 | unregister_shrinker(&f2fs_shrinker_info); | |
9890ff3f | 2021 | free_kset: |
08796897 SY |
2022 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
2023 | if (f2fs_fault_inject.kset) | |
2024 | kobject_put(&f2fs_fault_inject); | |
2025 | #endif | |
9890ff3f | 2026 | kset_unregister(f2fs_kset); |
1dcc336b CY |
2027 | free_extent_cache: |
2028 | destroy_extent_cache(); | |
9890ff3f ZH |
2029 | free_checkpoint_caches: |
2030 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
2031 | free_segment_manager_caches: |
2032 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
2033 | free_node_manager_caches: |
2034 | destroy_node_manager_caches(); | |
2035 | free_inodecache: | |
2036 | destroy_inodecache(); | |
aff063e2 JK |
2037 | fail: |
2038 | return err; | |
2039 | } | |
2040 | ||
2041 | static void __exit exit_f2fs_fs(void) | |
2042 | { | |
5e176d54 | 2043 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 2044 | f2fs_destroy_root_stats(); |
aff063e2 | 2045 | unregister_filesystem(&f2fs_fs_type); |
b8bef79d TY |
2046 | unregister_shrinker(&f2fs_shrinker_info); |
2047 | #ifdef CONFIG_F2FS_FAULT_INJECTION | |
2048 | kobject_put(&f2fs_fault_inject); | |
2049 | #endif | |
2050 | kset_unregister(f2fs_kset); | |
fdf6c8be | 2051 | destroy_extent_cache(); |
aff063e2 | 2052 | destroy_checkpoint_caches(); |
5dcd8a71 | 2053 | destroy_segment_manager_caches(); |
aff063e2 JK |
2054 | destroy_node_manager_caches(); |
2055 | destroy_inodecache(); | |
351f4fba | 2056 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
2057 | } |
2058 | ||
2059 | module_init(init_f2fs_fs) | |
2060 | module_exit(exit_f2fs_fs) | |
2061 | ||
2062 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
2063 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
2064 | MODULE_LICENSE("GPL"); |