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