Commit | Line | Data |
---|---|---|
0a8165d7 | 1 | /* |
aff063e2 JK |
2 | * fs/f2fs/super.c |
3 | * | |
4 | * Copyright (c) 2012 Samsung Electronics Co., Ltd. | |
5 | * http://www.samsung.com/ | |
6 | * | |
7 | * This program is free software; you can redistribute it and/or modify | |
8 | * it under the terms of the GNU General Public License version 2 as | |
9 | * published by the Free Software Foundation. | |
10 | */ | |
11 | #include <linux/module.h> | |
12 | #include <linux/init.h> | |
13 | #include <linux/fs.h> | |
14 | #include <linux/statfs.h> | |
aff063e2 JK |
15 | #include <linux/buffer_head.h> |
16 | #include <linux/backing-dev.h> | |
17 | #include <linux/kthread.h> | |
18 | #include <linux/parser.h> | |
19 | #include <linux/mount.h> | |
20 | #include <linux/seq_file.h> | |
5e176d54 | 21 | #include <linux/proc_fs.h> |
aff063e2 JK |
22 | #include <linux/random.h> |
23 | #include <linux/exportfs.h> | |
d3ee456d | 24 | #include <linux/blkdev.h> |
aff063e2 | 25 | #include <linux/f2fs_fs.h> |
b59d0bae | 26 | #include <linux/sysfs.h> |
aff063e2 JK |
27 | |
28 | #include "f2fs.h" | |
29 | #include "node.h" | |
5ec4e49f | 30 | #include "segment.h" |
aff063e2 | 31 | #include "xattr.h" |
b59d0bae | 32 | #include "gc.h" |
db9f7c1a | 33 | #include "trace.h" |
aff063e2 | 34 | |
a2a4a7e4 NJ |
35 | #define CREATE_TRACE_POINTS |
36 | #include <trace/events/f2fs.h> | |
37 | ||
5e176d54 | 38 | static struct proc_dir_entry *f2fs_proc_root; |
aff063e2 | 39 | static struct kmem_cache *f2fs_inode_cachep; |
b59d0bae | 40 | static struct kset *f2fs_kset; |
aff063e2 | 41 | |
2658e50d JK |
42 | /* f2fs-wide shrinker description */ |
43 | static struct shrinker f2fs_shrinker_info = { | |
44 | .scan_objects = f2fs_shrink_scan, | |
45 | .count_objects = f2fs_shrink_count, | |
46 | .seeks = DEFAULT_SEEKS, | |
47 | }; | |
48 | ||
aff063e2 | 49 | enum { |
696c018c | 50 | Opt_gc_background, |
aff063e2 | 51 | Opt_disable_roll_forward, |
2d834bf9 | 52 | Opt_norecovery, |
aff063e2 JK |
53 | Opt_discard, |
54 | Opt_noheap, | |
4058c511 | 55 | Opt_user_xattr, |
aff063e2 | 56 | Opt_nouser_xattr, |
4058c511 | 57 | Opt_acl, |
aff063e2 JK |
58 | Opt_noacl, |
59 | Opt_active_logs, | |
60 | Opt_disable_ext_identify, | |
444c580f | 61 | Opt_inline_xattr, |
8274de77 | 62 | Opt_inline_data, |
5efd3c6f | 63 | Opt_inline_dentry, |
6b4afdd7 | 64 | Opt_flush_merge, |
0f7b2abd | 65 | Opt_nobarrier, |
d5053a34 | 66 | Opt_fastboot, |
89672159 | 67 | Opt_extent_cache, |
7daaea25 | 68 | Opt_noextent_cache, |
75342797 | 69 | Opt_noinline_data, |
343f40f0 | 70 | Opt_data_flush, |
aff063e2 JK |
71 | Opt_err, |
72 | }; | |
73 | ||
74 | static match_table_t f2fs_tokens = { | |
696c018c | 75 | {Opt_gc_background, "background_gc=%s"}, |
aff063e2 | 76 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
2d834bf9 | 77 | {Opt_norecovery, "norecovery"}, |
aff063e2 JK |
78 | {Opt_discard, "discard"}, |
79 | {Opt_noheap, "no_heap"}, | |
4058c511 | 80 | {Opt_user_xattr, "user_xattr"}, |
aff063e2 | 81 | {Opt_nouser_xattr, "nouser_xattr"}, |
4058c511 | 82 | {Opt_acl, "acl"}, |
aff063e2 JK |
83 | {Opt_noacl, "noacl"}, |
84 | {Opt_active_logs, "active_logs=%u"}, | |
85 | {Opt_disable_ext_identify, "disable_ext_identify"}, | |
444c580f | 86 | {Opt_inline_xattr, "inline_xattr"}, |
8274de77 | 87 | {Opt_inline_data, "inline_data"}, |
5efd3c6f | 88 | {Opt_inline_dentry, "inline_dentry"}, |
6b4afdd7 | 89 | {Opt_flush_merge, "flush_merge"}, |
0f7b2abd | 90 | {Opt_nobarrier, "nobarrier"}, |
d5053a34 | 91 | {Opt_fastboot, "fastboot"}, |
89672159 | 92 | {Opt_extent_cache, "extent_cache"}, |
7daaea25 | 93 | {Opt_noextent_cache, "noextent_cache"}, |
75342797 | 94 | {Opt_noinline_data, "noinline_data"}, |
343f40f0 | 95 | {Opt_data_flush, "data_flush"}, |
aff063e2 JK |
96 | {Opt_err, NULL}, |
97 | }; | |
98 | ||
b59d0bae | 99 | /* Sysfs support for f2fs */ |
ea91e9b0 JK |
100 | enum { |
101 | GC_THREAD, /* struct f2fs_gc_thread */ | |
102 | SM_INFO, /* struct f2fs_sm_info */ | |
cdfc41c1 | 103 | NM_INFO, /* struct f2fs_nm_info */ |
b1c57c1c | 104 | F2FS_SBI, /* struct f2fs_sb_info */ |
ea91e9b0 JK |
105 | }; |
106 | ||
b59d0bae NJ |
107 | struct f2fs_attr { |
108 | struct attribute attr; | |
109 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); | |
110 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, | |
111 | const char *, size_t); | |
ea91e9b0 | 112 | int struct_type; |
b59d0bae NJ |
113 | int offset; |
114 | }; | |
115 | ||
ea91e9b0 JK |
116 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
117 | { | |
118 | if (struct_type == GC_THREAD) | |
119 | return (unsigned char *)sbi->gc_thread; | |
120 | else if (struct_type == SM_INFO) | |
121 | return (unsigned char *)SM_I(sbi); | |
cdfc41c1 JK |
122 | else if (struct_type == NM_INFO) |
123 | return (unsigned char *)NM_I(sbi); | |
b1c57c1c JK |
124 | else if (struct_type == F2FS_SBI) |
125 | return (unsigned char *)sbi; | |
ea91e9b0 JK |
126 | return NULL; |
127 | } | |
128 | ||
8f1dbbbb SL |
129 | static ssize_t lifetime_write_kbytes_show(struct f2fs_attr *a, |
130 | struct f2fs_sb_info *sbi, char *buf) | |
131 | { | |
132 | struct super_block *sb = sbi->sb; | |
133 | ||
134 | if (!sb->s_bdev->bd_part) | |
135 | return snprintf(buf, PAGE_SIZE, "0\n"); | |
136 | ||
137 | return snprintf(buf, PAGE_SIZE, "%llu\n", | |
138 | (unsigned long long)(sbi->kbytes_written + | |
139 | BD_PART_WRITTEN(sbi))); | |
140 | } | |
141 | ||
b59d0bae NJ |
142 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
143 | struct f2fs_sb_info *sbi, char *buf) | |
144 | { | |
ea91e9b0 | 145 | unsigned char *ptr = NULL; |
b59d0bae NJ |
146 | unsigned int *ui; |
147 | ||
ea91e9b0 JK |
148 | ptr = __struct_ptr(sbi, a->struct_type); |
149 | if (!ptr) | |
b59d0bae NJ |
150 | return -EINVAL; |
151 | ||
ea91e9b0 | 152 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
153 | |
154 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); | |
155 | } | |
156 | ||
157 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, | |
158 | struct f2fs_sb_info *sbi, | |
159 | const char *buf, size_t count) | |
160 | { | |
ea91e9b0 | 161 | unsigned char *ptr; |
b59d0bae NJ |
162 | unsigned long t; |
163 | unsigned int *ui; | |
164 | ssize_t ret; | |
165 | ||
ea91e9b0 JK |
166 | ptr = __struct_ptr(sbi, a->struct_type); |
167 | if (!ptr) | |
b59d0bae NJ |
168 | return -EINVAL; |
169 | ||
ea91e9b0 | 170 | ui = (unsigned int *)(ptr + a->offset); |
b59d0bae NJ |
171 | |
172 | ret = kstrtoul(skip_spaces(buf), 0, &t); | |
173 | if (ret < 0) | |
174 | return ret; | |
175 | *ui = t; | |
176 | return count; | |
177 | } | |
178 | ||
179 | static ssize_t f2fs_attr_show(struct kobject *kobj, | |
180 | struct attribute *attr, char *buf) | |
181 | { | |
182 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
183 | s_kobj); | |
184 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
185 | ||
186 | return a->show ? a->show(a, sbi, buf) : 0; | |
187 | } | |
188 | ||
189 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, | |
190 | const char *buf, size_t len) | |
191 | { | |
192 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
193 | s_kobj); | |
194 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); | |
195 | ||
196 | return a->store ? a->store(a, sbi, buf, len) : 0; | |
197 | } | |
198 | ||
199 | static void f2fs_sb_release(struct kobject *kobj) | |
200 | { | |
201 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, | |
202 | s_kobj); | |
203 | complete(&sbi->s_kobj_unregister); | |
204 | } | |
205 | ||
ea91e9b0 | 206 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
b59d0bae NJ |
207 | static struct f2fs_attr f2fs_attr_##_name = { \ |
208 | .attr = {.name = __stringify(_name), .mode = _mode }, \ | |
209 | .show = _show, \ | |
210 | .store = _store, \ | |
ea91e9b0 JK |
211 | .struct_type = _struct_type, \ |
212 | .offset = _offset \ | |
b59d0bae NJ |
213 | } |
214 | ||
ea91e9b0 JK |
215 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
216 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ | |
217 | f2fs_sbi_show, f2fs_sbi_store, \ | |
218 | offsetof(struct struct_name, elname)) | |
b59d0bae | 219 | |
8f1dbbbb SL |
220 | #define F2FS_GENERAL_RO_ATTR(name) \ |
221 | static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL) | |
222 | ||
ea91e9b0 JK |
223 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
224 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); | |
225 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); | |
226 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); | |
227 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); | |
7ac8c3b0 | 228 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
bba681cb | 229 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
216fbd64 JK |
230 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
231 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); | |
c1ce1b02 | 232 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
cdfc41c1 | 233 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
ea1a29a0 | 234 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ra_nid_pages, ra_nid_pages); |
2304cb0c | 235 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, dirty_nats_ratio, dirty_nats_ratio); |
b1c57c1c | 236 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
ab9fa662 | 237 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
6beceb54 | 238 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, cp_interval, interval_time[CP_TIME]); |
d0239e1b | 239 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, idle_interval, interval_time[REQ_TIME]); |
8f1dbbbb | 240 | F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes); |
b59d0bae NJ |
241 | |
242 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) | |
243 | static struct attribute *f2fs_attrs[] = { | |
244 | ATTR_LIST(gc_min_sleep_time), | |
245 | ATTR_LIST(gc_max_sleep_time), | |
246 | ATTR_LIST(gc_no_gc_sleep_time), | |
d2dc095f | 247 | ATTR_LIST(gc_idle), |
ea91e9b0 | 248 | ATTR_LIST(reclaim_segments), |
7ac8c3b0 | 249 | ATTR_LIST(max_small_discards), |
bba681cb | 250 | ATTR_LIST(batched_trim_sections), |
216fbd64 JK |
251 | ATTR_LIST(ipu_policy), |
252 | ATTR_LIST(min_ipu_util), | |
c1ce1b02 | 253 | ATTR_LIST(min_fsync_blocks), |
b1c57c1c | 254 | ATTR_LIST(max_victim_search), |
ab9fa662 | 255 | ATTR_LIST(dir_level), |
cdfc41c1 | 256 | ATTR_LIST(ram_thresh), |
ea1a29a0 | 257 | ATTR_LIST(ra_nid_pages), |
2304cb0c | 258 | ATTR_LIST(dirty_nats_ratio), |
60b99b48 | 259 | ATTR_LIST(cp_interval), |
d0239e1b | 260 | ATTR_LIST(idle_interval), |
8f1dbbbb | 261 | ATTR_LIST(lifetime_write_kbytes), |
b59d0bae NJ |
262 | NULL, |
263 | }; | |
264 | ||
265 | static const struct sysfs_ops f2fs_attr_ops = { | |
266 | .show = f2fs_attr_show, | |
267 | .store = f2fs_attr_store, | |
268 | }; | |
269 | ||
270 | static struct kobj_type f2fs_ktype = { | |
271 | .default_attrs = f2fs_attrs, | |
272 | .sysfs_ops = &f2fs_attr_ops, | |
273 | .release = f2fs_sb_release, | |
274 | }; | |
275 | ||
a07ef784 NJ |
276 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
277 | { | |
278 | struct va_format vaf; | |
279 | va_list args; | |
280 | ||
281 | va_start(args, fmt); | |
282 | vaf.fmt = fmt; | |
283 | vaf.va = &args; | |
284 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); | |
285 | va_end(args); | |
286 | } | |
287 | ||
aff063e2 JK |
288 | static void init_once(void *foo) |
289 | { | |
290 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; | |
291 | ||
aff063e2 JK |
292 | inode_init_once(&fi->vfs_inode); |
293 | } | |
294 | ||
696c018c NJ |
295 | static int parse_options(struct super_block *sb, char *options) |
296 | { | |
297 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
09d54cdd | 298 | struct request_queue *q; |
696c018c NJ |
299 | substring_t args[MAX_OPT_ARGS]; |
300 | char *p, *name; | |
301 | int arg = 0; | |
302 | ||
303 | if (!options) | |
304 | return 0; | |
305 | ||
306 | while ((p = strsep(&options, ",")) != NULL) { | |
307 | int token; | |
308 | if (!*p) | |
309 | continue; | |
310 | /* | |
311 | * Initialize args struct so we know whether arg was | |
312 | * found; some options take optional arguments. | |
313 | */ | |
314 | args[0].to = args[0].from = NULL; | |
315 | token = match_token(p, f2fs_tokens, args); | |
316 | ||
317 | switch (token) { | |
318 | case Opt_gc_background: | |
319 | name = match_strdup(&args[0]); | |
320 | ||
321 | if (!name) | |
322 | return -ENOMEM; | |
6aefd93b | 323 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) { |
696c018c | 324 | set_opt(sbi, BG_GC); |
6aefd93b JK |
325 | clear_opt(sbi, FORCE_FG_GC); |
326 | } else if (strlen(name) == 3 && !strncmp(name, "off", 3)) { | |
696c018c | 327 | clear_opt(sbi, BG_GC); |
6aefd93b JK |
328 | clear_opt(sbi, FORCE_FG_GC); |
329 | } else if (strlen(name) == 4 && !strncmp(name, "sync", 4)) { | |
330 | set_opt(sbi, BG_GC); | |
331 | set_opt(sbi, FORCE_FG_GC); | |
332 | } else { | |
696c018c NJ |
333 | kfree(name); |
334 | return -EINVAL; | |
335 | } | |
336 | kfree(name); | |
337 | break; | |
338 | case Opt_disable_roll_forward: | |
339 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
340 | break; | |
2d834bf9 JK |
341 | case Opt_norecovery: |
342 | /* this option mounts f2fs with ro */ | |
343 | set_opt(sbi, DISABLE_ROLL_FORWARD); | |
344 | if (!f2fs_readonly(sb)) | |
345 | return -EINVAL; | |
346 | break; | |
696c018c | 347 | case Opt_discard: |
09d54cdd CY |
348 | q = bdev_get_queue(sb->s_bdev); |
349 | if (blk_queue_discard(q)) { | |
350 | set_opt(sbi, DISCARD); | |
351 | } else { | |
352 | f2fs_msg(sb, KERN_WARNING, | |
353 | "mounting with \"discard\" option, but " | |
354 | "the device does not support discard"); | |
355 | } | |
696c018c NJ |
356 | break; |
357 | case Opt_noheap: | |
358 | set_opt(sbi, NOHEAP); | |
359 | break; | |
360 | #ifdef CONFIG_F2FS_FS_XATTR | |
4058c511 KA |
361 | case Opt_user_xattr: |
362 | set_opt(sbi, XATTR_USER); | |
363 | break; | |
696c018c NJ |
364 | case Opt_nouser_xattr: |
365 | clear_opt(sbi, XATTR_USER); | |
366 | break; | |
444c580f JK |
367 | case Opt_inline_xattr: |
368 | set_opt(sbi, INLINE_XATTR); | |
369 | break; | |
696c018c | 370 | #else |
4058c511 KA |
371 | case Opt_user_xattr: |
372 | f2fs_msg(sb, KERN_INFO, | |
373 | "user_xattr options not supported"); | |
374 | break; | |
696c018c NJ |
375 | case Opt_nouser_xattr: |
376 | f2fs_msg(sb, KERN_INFO, | |
377 | "nouser_xattr options not supported"); | |
378 | break; | |
444c580f JK |
379 | case Opt_inline_xattr: |
380 | f2fs_msg(sb, KERN_INFO, | |
381 | "inline_xattr options not supported"); | |
382 | break; | |
696c018c NJ |
383 | #endif |
384 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
4058c511 KA |
385 | case Opt_acl: |
386 | set_opt(sbi, POSIX_ACL); | |
387 | break; | |
696c018c NJ |
388 | case Opt_noacl: |
389 | clear_opt(sbi, POSIX_ACL); | |
390 | break; | |
391 | #else | |
4058c511 KA |
392 | case Opt_acl: |
393 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); | |
394 | break; | |
696c018c NJ |
395 | case Opt_noacl: |
396 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); | |
397 | break; | |
398 | #endif | |
399 | case Opt_active_logs: | |
400 | if (args->from && match_int(args, &arg)) | |
401 | return -EINVAL; | |
402 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) | |
403 | return -EINVAL; | |
404 | sbi->active_logs = arg; | |
405 | break; | |
406 | case Opt_disable_ext_identify: | |
407 | set_opt(sbi, DISABLE_EXT_IDENTIFY); | |
408 | break; | |
8274de77 HL |
409 | case Opt_inline_data: |
410 | set_opt(sbi, INLINE_DATA); | |
411 | break; | |
5efd3c6f CY |
412 | case Opt_inline_dentry: |
413 | set_opt(sbi, INLINE_DENTRY); | |
414 | break; | |
6b4afdd7 JK |
415 | case Opt_flush_merge: |
416 | set_opt(sbi, FLUSH_MERGE); | |
417 | break; | |
0f7b2abd JK |
418 | case Opt_nobarrier: |
419 | set_opt(sbi, NOBARRIER); | |
420 | break; | |
d5053a34 JK |
421 | case Opt_fastboot: |
422 | set_opt(sbi, FASTBOOT); | |
423 | break; | |
89672159 CY |
424 | case Opt_extent_cache: |
425 | set_opt(sbi, EXTENT_CACHE); | |
426 | break; | |
7daaea25 JK |
427 | case Opt_noextent_cache: |
428 | clear_opt(sbi, EXTENT_CACHE); | |
429 | break; | |
75342797 WL |
430 | case Opt_noinline_data: |
431 | clear_opt(sbi, INLINE_DATA); | |
432 | break; | |
343f40f0 CY |
433 | case Opt_data_flush: |
434 | set_opt(sbi, DATA_FLUSH); | |
435 | break; | |
696c018c NJ |
436 | default: |
437 | f2fs_msg(sb, KERN_ERR, | |
438 | "Unrecognized mount option \"%s\" or missing value", | |
439 | p); | |
440 | return -EINVAL; | |
441 | } | |
442 | } | |
443 | return 0; | |
444 | } | |
445 | ||
aff063e2 JK |
446 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
447 | { | |
448 | struct f2fs_inode_info *fi; | |
449 | ||
a0acdfe0 | 450 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
aff063e2 JK |
451 | if (!fi) |
452 | return NULL; | |
453 | ||
454 | init_once((void *) fi); | |
455 | ||
434720fa | 456 | /* Initialize f2fs-specific inode info */ |
aff063e2 | 457 | fi->vfs_inode.i_version = 1; |
a7ffdbe2 | 458 | atomic_set(&fi->dirty_pages, 0); |
aff063e2 JK |
459 | fi->i_current_depth = 1; |
460 | fi->i_advise = 0; | |
d928bfbf | 461 | init_rwsem(&fi->i_sem); |
2710fd7e | 462 | INIT_LIST_HEAD(&fi->dirty_list); |
88b88a66 JK |
463 | INIT_LIST_HEAD(&fi->inmem_pages); |
464 | mutex_init(&fi->inmem_lock); | |
aff063e2 JK |
465 | |
466 | set_inode_flag(fi, FI_NEW_INODE); | |
467 | ||
444c580f JK |
468 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
469 | set_inode_flag(fi, FI_INLINE_XATTR); | |
470 | ||
ab9fa662 JK |
471 | /* Will be used by directory only */ |
472 | fi->i_dir_level = F2FS_SB(sb)->dir_level; | |
473 | ||
57e5055b JK |
474 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
475 | fi->i_crypt_info = NULL; | |
476 | #endif | |
aff063e2 JK |
477 | return &fi->vfs_inode; |
478 | } | |
479 | ||
531ad7d5 JK |
480 | static int f2fs_drop_inode(struct inode *inode) |
481 | { | |
482 | /* | |
483 | * This is to avoid a deadlock condition like below. | |
484 | * writeback_single_inode(inode) | |
485 | * - f2fs_write_data_page | |
486 | * - f2fs_gc -> iput -> evict | |
487 | * - inode_wait_for_writeback(inode) | |
488 | */ | |
06e1bc05 JK |
489 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
490 | if (!inode->i_nlink && !is_bad_inode(inode)) { | |
3e72f721 JK |
491 | /* to avoid evict_inode call simultaneously */ |
492 | atomic_inc(&inode->i_count); | |
06e1bc05 JK |
493 | spin_unlock(&inode->i_lock); |
494 | ||
495 | /* some remained atomic pages should discarded */ | |
496 | if (f2fs_is_atomic_file(inode)) | |
497 | commit_inmem_pages(inode, true); | |
498 | ||
3e72f721 JK |
499 | /* should remain fi->extent_tree for writepage */ |
500 | f2fs_destroy_extent_node(inode); | |
501 | ||
06e1bc05 JK |
502 | sb_start_intwrite(inode->i_sb); |
503 | i_size_write(inode, 0); | |
504 | ||
505 | if (F2FS_HAS_BLOCKS(inode)) | |
55f57d2c | 506 | f2fs_truncate(inode, true); |
06e1bc05 JK |
507 | |
508 | sb_end_intwrite(inode->i_sb); | |
509 | ||
510 | #ifdef CONFIG_F2FS_FS_ENCRYPTION | |
511 | if (F2FS_I(inode)->i_crypt_info) | |
26bf3dc7 JK |
512 | f2fs_free_encryption_info(inode, |
513 | F2FS_I(inode)->i_crypt_info); | |
06e1bc05 JK |
514 | #endif |
515 | spin_lock(&inode->i_lock); | |
3e72f721 | 516 | atomic_dec(&inode->i_count); |
06e1bc05 | 517 | } |
531ad7d5 | 518 | return 0; |
06e1bc05 | 519 | } |
531ad7d5 JK |
520 | return generic_drop_inode(inode); |
521 | } | |
522 | ||
b3783873 JK |
523 | /* |
524 | * f2fs_dirty_inode() is called from __mark_inode_dirty() | |
525 | * | |
526 | * We should call set_dirty_inode to write the dirty inode through write_inode. | |
527 | */ | |
528 | static void f2fs_dirty_inode(struct inode *inode, int flags) | |
529 | { | |
530 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); | |
b3783873 JK |
531 | } |
532 | ||
aff063e2 JK |
533 | static void f2fs_i_callback(struct rcu_head *head) |
534 | { | |
535 | struct inode *inode = container_of(head, struct inode, i_rcu); | |
536 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); | |
537 | } | |
538 | ||
25ca923b | 539 | static void f2fs_destroy_inode(struct inode *inode) |
aff063e2 JK |
540 | { |
541 | call_rcu(&inode->i_rcu, f2fs_i_callback); | |
542 | } | |
543 | ||
544 | static void f2fs_put_super(struct super_block *sb) | |
545 | { | |
546 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
547 | ||
5e176d54 JK |
548 | if (sbi->s_proc) { |
549 | remove_proc_entry("segment_info", sbi->s_proc); | |
550 | remove_proc_entry(sb->s_id, f2fs_proc_root); | |
551 | } | |
b59d0bae | 552 | kobject_del(&sbi->s_kobj); |
5e176d54 | 553 | |
aff063e2 JK |
554 | stop_gc_thread(sbi); |
555 | ||
2658e50d JK |
556 | /* prevent remaining shrinker jobs */ |
557 | mutex_lock(&sbi->umount_mutex); | |
558 | ||
85dc2f2c JK |
559 | /* |
560 | * We don't need to do checkpoint when superblock is clean. | |
561 | * But, the previous checkpoint was not done by umount, it needs to do | |
562 | * clean checkpoint again. | |
563 | */ | |
caf0047e | 564 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
85dc2f2c | 565 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
75ab4cb8 JK |
566 | struct cp_control cpc = { |
567 | .reason = CP_UMOUNT, | |
568 | }; | |
569 | write_checkpoint(sbi, &cpc); | |
570 | } | |
aff063e2 | 571 | |
eca616f8 JK |
572 | /* write_checkpoint can update stat informaion */ |
573 | f2fs_destroy_stats(sbi); | |
574 | ||
cf779cab JK |
575 | /* |
576 | * normally superblock is clean, so we need to release this. | |
577 | * In addition, EIO will skip do checkpoint, we need this as well. | |
578 | */ | |
a49324f1 | 579 | release_ino_entry(sbi); |
4b2fecc8 | 580 | release_discard_addrs(sbi); |
6f12ac25 | 581 | |
2658e50d JK |
582 | f2fs_leave_shrinker(sbi); |
583 | mutex_unlock(&sbi->umount_mutex); | |
584 | ||
aff063e2 JK |
585 | iput(sbi->node_inode); |
586 | iput(sbi->meta_inode); | |
587 | ||
588 | /* destroy f2fs internal modules */ | |
589 | destroy_node_manager(sbi); | |
590 | destroy_segment_manager(sbi); | |
591 | ||
592 | kfree(sbi->ckpt); | |
b59d0bae NJ |
593 | kobject_put(&sbi->s_kobj); |
594 | wait_for_completion(&sbi->s_kobj_unregister); | |
aff063e2 JK |
595 | |
596 | sb->s_fs_info = NULL; | |
b39f0de2 | 597 | kfree(sbi->raw_super); |
aff063e2 JK |
598 | kfree(sbi); |
599 | } | |
600 | ||
601 | int f2fs_sync_fs(struct super_block *sb, int sync) | |
602 | { | |
603 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
c34f42e2 | 604 | int err = 0; |
aff063e2 | 605 | |
a2a4a7e4 NJ |
606 | trace_f2fs_sync_fs(sb, sync); |
607 | ||
b7473754 | 608 | if (sync) { |
d5053a34 JK |
609 | struct cp_control cpc; |
610 | ||
119ee914 JK |
611 | cpc.reason = __get_cp_reason(sbi); |
612 | ||
b7473754 | 613 | mutex_lock(&sbi->gc_mutex); |
c34f42e2 | 614 | err = write_checkpoint(sbi, &cpc); |
b7473754 | 615 | mutex_unlock(&sbi->gc_mutex); |
b7473754 | 616 | } |
05ca3632 | 617 | f2fs_trace_ios(NULL, 1); |
aff063e2 | 618 | |
c34f42e2 | 619 | return err; |
aff063e2 JK |
620 | } |
621 | ||
d6212a5f CL |
622 | static int f2fs_freeze(struct super_block *sb) |
623 | { | |
624 | int err; | |
625 | ||
77888c1e | 626 | if (f2fs_readonly(sb)) |
d6212a5f CL |
627 | return 0; |
628 | ||
629 | err = f2fs_sync_fs(sb, 1); | |
630 | return err; | |
631 | } | |
632 | ||
633 | static int f2fs_unfreeze(struct super_block *sb) | |
634 | { | |
635 | return 0; | |
636 | } | |
637 | ||
aff063e2 JK |
638 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
639 | { | |
640 | struct super_block *sb = dentry->d_sb; | |
641 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
642 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); | |
643 | block_t total_count, user_block_count, start_count, ovp_count; | |
644 | ||
645 | total_count = le64_to_cpu(sbi->raw_super->block_count); | |
646 | user_block_count = sbi->user_block_count; | |
647 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); | |
648 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; | |
649 | buf->f_type = F2FS_SUPER_MAGIC; | |
650 | buf->f_bsize = sbi->blocksize; | |
651 | ||
652 | buf->f_blocks = total_count - start_count; | |
653 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; | |
654 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); | |
655 | ||
c200b1aa CY |
656 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
657 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); | |
aff063e2 | 658 | |
5a20d339 | 659 | buf->f_namelen = F2FS_NAME_LEN; |
aff063e2 JK |
660 | buf->f_fsid.val[0] = (u32)id; |
661 | buf->f_fsid.val[1] = (u32)(id >> 32); | |
662 | ||
663 | return 0; | |
664 | } | |
665 | ||
666 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) | |
667 | { | |
668 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); | |
669 | ||
6aefd93b JK |
670 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) { |
671 | if (test_opt(sbi, FORCE_FG_GC)) | |
672 | seq_printf(seq, ",background_gc=%s", "sync"); | |
673 | else | |
674 | seq_printf(seq, ",background_gc=%s", "on"); | |
675 | } else { | |
696c018c | 676 | seq_printf(seq, ",background_gc=%s", "off"); |
6aefd93b | 677 | } |
aff063e2 JK |
678 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
679 | seq_puts(seq, ",disable_roll_forward"); | |
680 | if (test_opt(sbi, DISCARD)) | |
681 | seq_puts(seq, ",discard"); | |
682 | if (test_opt(sbi, NOHEAP)) | |
683 | seq_puts(seq, ",no_heap_alloc"); | |
684 | #ifdef CONFIG_F2FS_FS_XATTR | |
685 | if (test_opt(sbi, XATTR_USER)) | |
686 | seq_puts(seq, ",user_xattr"); | |
687 | else | |
688 | seq_puts(seq, ",nouser_xattr"); | |
444c580f JK |
689 | if (test_opt(sbi, INLINE_XATTR)) |
690 | seq_puts(seq, ",inline_xattr"); | |
aff063e2 JK |
691 | #endif |
692 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
693 | if (test_opt(sbi, POSIX_ACL)) | |
694 | seq_puts(seq, ",acl"); | |
695 | else | |
696 | seq_puts(seq, ",noacl"); | |
697 | #endif | |
698 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) | |
aa43507f | 699 | seq_puts(seq, ",disable_ext_identify"); |
8274de77 HL |
700 | if (test_opt(sbi, INLINE_DATA)) |
701 | seq_puts(seq, ",inline_data"); | |
75342797 WL |
702 | else |
703 | seq_puts(seq, ",noinline_data"); | |
5efd3c6f CY |
704 | if (test_opt(sbi, INLINE_DENTRY)) |
705 | seq_puts(seq, ",inline_dentry"); | |
b270ad6f | 706 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
6b4afdd7 | 707 | seq_puts(seq, ",flush_merge"); |
0f7b2abd JK |
708 | if (test_opt(sbi, NOBARRIER)) |
709 | seq_puts(seq, ",nobarrier"); | |
d5053a34 JK |
710 | if (test_opt(sbi, FASTBOOT)) |
711 | seq_puts(seq, ",fastboot"); | |
89672159 CY |
712 | if (test_opt(sbi, EXTENT_CACHE)) |
713 | seq_puts(seq, ",extent_cache"); | |
7daaea25 JK |
714 | else |
715 | seq_puts(seq, ",noextent_cache"); | |
343f40f0 CY |
716 | if (test_opt(sbi, DATA_FLUSH)) |
717 | seq_puts(seq, ",data_flush"); | |
aff063e2 JK |
718 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
719 | ||
720 | return 0; | |
721 | } | |
722 | ||
5e176d54 JK |
723 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
724 | { | |
725 | struct super_block *sb = seq->private; | |
726 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
6c311ec6 CF |
727 | unsigned int total_segs = |
728 | le32_to_cpu(sbi->raw_super->segment_count_main); | |
5e176d54 JK |
729 | int i; |
730 | ||
90aa6dc9 CY |
731 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
732 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); | |
733 | ||
5e176d54 | 734 | for (i = 0; i < total_segs; i++) { |
90aa6dc9 CY |
735 | struct seg_entry *se = get_seg_entry(sbi, i); |
736 | ||
737 | if ((i % 10) == 0) | |
01a5ad82 | 738 | seq_printf(seq, "%-10d", i); |
90aa6dc9 CY |
739 | seq_printf(seq, "%d|%-3u", se->type, |
740 | get_valid_blocks(sbi, i, 1)); | |
46c04366 GZ |
741 | if ((i % 10) == 9 || i == (total_segs - 1)) |
742 | seq_putc(seq, '\n'); | |
5e176d54 | 743 | else |
46c04366 | 744 | seq_putc(seq, ' '); |
5e176d54 | 745 | } |
46c04366 | 746 | |
5e176d54 JK |
747 | return 0; |
748 | } | |
749 | ||
750 | static int segment_info_open_fs(struct inode *inode, struct file *file) | |
751 | { | |
752 | return single_open(file, segment_info_seq_show, PDE_DATA(inode)); | |
753 | } | |
754 | ||
755 | static const struct file_operations f2fs_seq_segment_info_fops = { | |
756 | .owner = THIS_MODULE, | |
757 | .open = segment_info_open_fs, | |
758 | .read = seq_read, | |
759 | .llseek = seq_lseek, | |
760 | .release = single_release, | |
761 | }; | |
762 | ||
498c5e9f YH |
763 | static void default_options(struct f2fs_sb_info *sbi) |
764 | { | |
765 | /* init some FS parameters */ | |
766 | sbi->active_logs = NR_CURSEG_TYPE; | |
767 | ||
768 | set_opt(sbi, BG_GC); | |
769 | set_opt(sbi, INLINE_DATA); | |
3e72f721 | 770 | set_opt(sbi, EXTENT_CACHE); |
498c5e9f YH |
771 | |
772 | #ifdef CONFIG_F2FS_FS_XATTR | |
773 | set_opt(sbi, XATTR_USER); | |
774 | #endif | |
775 | #ifdef CONFIG_F2FS_FS_POSIX_ACL | |
776 | set_opt(sbi, POSIX_ACL); | |
777 | #endif | |
778 | } | |
779 | ||
696c018c NJ |
780 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
781 | { | |
782 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
783 | struct f2fs_mount_info org_mount_opt; | |
784 | int err, active_logs; | |
876dc59e GZ |
785 | bool need_restart_gc = false; |
786 | bool need_stop_gc = false; | |
9cd81ce3 | 787 | bool no_extent_cache = !test_opt(sbi, EXTENT_CACHE); |
696c018c NJ |
788 | |
789 | /* | |
790 | * Save the old mount options in case we | |
791 | * need to restore them. | |
792 | */ | |
793 | org_mount_opt = sbi->mount_opt; | |
794 | active_logs = sbi->active_logs; | |
795 | ||
8f1dbbbb SL |
796 | if (*flags & MS_RDONLY) { |
797 | set_opt(sbi, FASTBOOT); | |
798 | set_sbi_flag(sbi, SBI_IS_DIRTY); | |
799 | } | |
800 | ||
801 | sync_filesystem(sb); | |
802 | ||
26666c8a | 803 | sbi->mount_opt.opt = 0; |
498c5e9f | 804 | default_options(sbi); |
26666c8a | 805 | |
696c018c NJ |
806 | /* parse mount options */ |
807 | err = parse_options(sb, data); | |
808 | if (err) | |
809 | goto restore_opts; | |
810 | ||
811 | /* | |
812 | * Previous and new state of filesystem is RO, | |
876dc59e | 813 | * so skip checking GC and FLUSH_MERGE conditions. |
696c018c | 814 | */ |
6b2920a5 | 815 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
696c018c NJ |
816 | goto skip; |
817 | ||
9cd81ce3 CY |
818 | /* disallow enable/disable extent_cache dynamically */ |
819 | if (no_extent_cache == !!test_opt(sbi, EXTENT_CACHE)) { | |
820 | err = -EINVAL; | |
821 | f2fs_msg(sbi->sb, KERN_WARNING, | |
822 | "switch extent_cache option is not allowed"); | |
823 | goto restore_opts; | |
824 | } | |
825 | ||
696c018c NJ |
826 | /* |
827 | * We stop the GC thread if FS is mounted as RO | |
828 | * or if background_gc = off is passed in mount | |
829 | * option. Also sync the filesystem. | |
830 | */ | |
831 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { | |
832 | if (sbi->gc_thread) { | |
833 | stop_gc_thread(sbi); | |
834 | f2fs_sync_fs(sb, 1); | |
876dc59e | 835 | need_restart_gc = true; |
696c018c | 836 | } |
aba291b3 | 837 | } else if (!sbi->gc_thread) { |
696c018c NJ |
838 | err = start_gc_thread(sbi); |
839 | if (err) | |
840 | goto restore_opts; | |
876dc59e GZ |
841 | need_stop_gc = true; |
842 | } | |
843 | ||
844 | /* | |
845 | * We stop issue flush thread if FS is mounted as RO | |
846 | * or if flush_merge is not passed in mount option. | |
847 | */ | |
848 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { | |
2163d198 | 849 | destroy_flush_cmd_control(sbi); |
aba291b3 | 850 | } else if (!SM_I(sbi)->cmd_control_info) { |
2163d198 GZ |
851 | err = create_flush_cmd_control(sbi); |
852 | if (err) | |
a688b9d9 | 853 | goto restore_gc; |
696c018c NJ |
854 | } |
855 | skip: | |
856 | /* Update the POSIXACL Flag */ | |
857 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
858 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
859 | return 0; | |
876dc59e GZ |
860 | restore_gc: |
861 | if (need_restart_gc) { | |
862 | if (start_gc_thread(sbi)) | |
863 | f2fs_msg(sbi->sb, KERN_WARNING, | |
e1c42045 | 864 | "background gc thread has stopped"); |
876dc59e GZ |
865 | } else if (need_stop_gc) { |
866 | stop_gc_thread(sbi); | |
867 | } | |
696c018c NJ |
868 | restore_opts: |
869 | sbi->mount_opt = org_mount_opt; | |
870 | sbi->active_logs = active_logs; | |
871 | return err; | |
872 | } | |
873 | ||
aff063e2 JK |
874 | static struct super_operations f2fs_sops = { |
875 | .alloc_inode = f2fs_alloc_inode, | |
531ad7d5 | 876 | .drop_inode = f2fs_drop_inode, |
aff063e2 JK |
877 | .destroy_inode = f2fs_destroy_inode, |
878 | .write_inode = f2fs_write_inode, | |
b3783873 | 879 | .dirty_inode = f2fs_dirty_inode, |
aff063e2 JK |
880 | .show_options = f2fs_show_options, |
881 | .evict_inode = f2fs_evict_inode, | |
882 | .put_super = f2fs_put_super, | |
883 | .sync_fs = f2fs_sync_fs, | |
d6212a5f CL |
884 | .freeze_fs = f2fs_freeze, |
885 | .unfreeze_fs = f2fs_unfreeze, | |
aff063e2 | 886 | .statfs = f2fs_statfs, |
696c018c | 887 | .remount_fs = f2fs_remount, |
aff063e2 JK |
888 | }; |
889 | ||
890 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, | |
891 | u64 ino, u32 generation) | |
892 | { | |
893 | struct f2fs_sb_info *sbi = F2FS_SB(sb); | |
894 | struct inode *inode; | |
895 | ||
d6b7d4b3 | 896 | if (check_nid_range(sbi, ino)) |
910bb12d | 897 | return ERR_PTR(-ESTALE); |
aff063e2 JK |
898 | |
899 | /* | |
900 | * f2fs_iget isn't quite right if the inode is currently unallocated! | |
901 | * However f2fs_iget currently does appropriate checks to handle stale | |
902 | * inodes so everything is OK. | |
903 | */ | |
904 | inode = f2fs_iget(sb, ino); | |
905 | if (IS_ERR(inode)) | |
906 | return ERR_CAST(inode); | |
6bacf52f | 907 | if (unlikely(generation && inode->i_generation != generation)) { |
aff063e2 JK |
908 | /* we didn't find the right inode.. */ |
909 | iput(inode); | |
910 | return ERR_PTR(-ESTALE); | |
911 | } | |
912 | return inode; | |
913 | } | |
914 | ||
915 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, | |
916 | int fh_len, int fh_type) | |
917 | { | |
918 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, | |
919 | f2fs_nfs_get_inode); | |
920 | } | |
921 | ||
922 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, | |
923 | int fh_len, int fh_type) | |
924 | { | |
925 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, | |
926 | f2fs_nfs_get_inode); | |
927 | } | |
928 | ||
929 | static const struct export_operations f2fs_export_ops = { | |
930 | .fh_to_dentry = f2fs_fh_to_dentry, | |
931 | .fh_to_parent = f2fs_fh_to_parent, | |
932 | .get_parent = f2fs_get_parent, | |
933 | }; | |
934 | ||
e0afc4d6 | 935 | static loff_t max_file_blocks(void) |
aff063e2 | 936 | { |
de93653f | 937 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
aff063e2 JK |
938 | loff_t leaf_count = ADDRS_PER_BLOCK; |
939 | ||
940 | /* two direct node blocks */ | |
941 | result += (leaf_count * 2); | |
942 | ||
943 | /* two indirect node blocks */ | |
944 | leaf_count *= NIDS_PER_BLOCK; | |
945 | result += (leaf_count * 2); | |
946 | ||
947 | /* one double indirect node block */ | |
948 | leaf_count *= NIDS_PER_BLOCK; | |
949 | result += leaf_count; | |
950 | ||
aff063e2 JK |
951 | return result; |
952 | } | |
953 | ||
9a59b62f CY |
954 | static inline bool sanity_check_area_boundary(struct super_block *sb, |
955 | struct f2fs_super_block *raw_super) | |
956 | { | |
957 | u32 segment0_blkaddr = le32_to_cpu(raw_super->segment0_blkaddr); | |
958 | u32 cp_blkaddr = le32_to_cpu(raw_super->cp_blkaddr); | |
959 | u32 sit_blkaddr = le32_to_cpu(raw_super->sit_blkaddr); | |
960 | u32 nat_blkaddr = le32_to_cpu(raw_super->nat_blkaddr); | |
961 | u32 ssa_blkaddr = le32_to_cpu(raw_super->ssa_blkaddr); | |
962 | u32 main_blkaddr = le32_to_cpu(raw_super->main_blkaddr); | |
963 | u32 segment_count_ckpt = le32_to_cpu(raw_super->segment_count_ckpt); | |
964 | u32 segment_count_sit = le32_to_cpu(raw_super->segment_count_sit); | |
965 | u32 segment_count_nat = le32_to_cpu(raw_super->segment_count_nat); | |
966 | u32 segment_count_ssa = le32_to_cpu(raw_super->segment_count_ssa); | |
967 | u32 segment_count_main = le32_to_cpu(raw_super->segment_count_main); | |
968 | u32 segment_count = le32_to_cpu(raw_super->segment_count); | |
969 | u32 log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
970 | ||
971 | if (segment0_blkaddr != cp_blkaddr) { | |
972 | f2fs_msg(sb, KERN_INFO, | |
973 | "Mismatch start address, segment0(%u) cp_blkaddr(%u)", | |
974 | segment0_blkaddr, cp_blkaddr); | |
975 | return true; | |
976 | } | |
977 | ||
978 | if (cp_blkaddr + (segment_count_ckpt << log_blocks_per_seg) != | |
979 | sit_blkaddr) { | |
980 | f2fs_msg(sb, KERN_INFO, | |
981 | "Wrong CP boundary, start(%u) end(%u) blocks(%u)", | |
982 | cp_blkaddr, sit_blkaddr, | |
983 | segment_count_ckpt << log_blocks_per_seg); | |
984 | return true; | |
985 | } | |
986 | ||
987 | if (sit_blkaddr + (segment_count_sit << log_blocks_per_seg) != | |
988 | nat_blkaddr) { | |
989 | f2fs_msg(sb, KERN_INFO, | |
990 | "Wrong SIT boundary, start(%u) end(%u) blocks(%u)", | |
991 | sit_blkaddr, nat_blkaddr, | |
992 | segment_count_sit << log_blocks_per_seg); | |
993 | return true; | |
994 | } | |
995 | ||
996 | if (nat_blkaddr + (segment_count_nat << log_blocks_per_seg) != | |
997 | ssa_blkaddr) { | |
998 | f2fs_msg(sb, KERN_INFO, | |
999 | "Wrong NAT boundary, start(%u) end(%u) blocks(%u)", | |
1000 | nat_blkaddr, ssa_blkaddr, | |
1001 | segment_count_nat << log_blocks_per_seg); | |
1002 | return true; | |
1003 | } | |
1004 | ||
1005 | if (ssa_blkaddr + (segment_count_ssa << log_blocks_per_seg) != | |
1006 | main_blkaddr) { | |
1007 | f2fs_msg(sb, KERN_INFO, | |
1008 | "Wrong SSA boundary, start(%u) end(%u) blocks(%u)", | |
1009 | ssa_blkaddr, main_blkaddr, | |
1010 | segment_count_ssa << log_blocks_per_seg); | |
1011 | return true; | |
1012 | } | |
1013 | ||
1014 | if (main_blkaddr + (segment_count_main << log_blocks_per_seg) != | |
1015 | segment0_blkaddr + (segment_count << log_blocks_per_seg)) { | |
1016 | f2fs_msg(sb, KERN_INFO, | |
1017 | "Wrong MAIN_AREA boundary, start(%u) end(%u) blocks(%u)", | |
1018 | main_blkaddr, | |
1019 | segment0_blkaddr + (segment_count << log_blocks_per_seg), | |
1020 | segment_count_main << log_blocks_per_seg); | |
1021 | return true; | |
1022 | } | |
1023 | ||
1024 | return false; | |
1025 | } | |
1026 | ||
a07ef784 NJ |
1027 | static int sanity_check_raw_super(struct super_block *sb, |
1028 | struct f2fs_super_block *raw_super) | |
aff063e2 JK |
1029 | { |
1030 | unsigned int blocksize; | |
1031 | ||
a07ef784 NJ |
1032 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
1033 | f2fs_msg(sb, KERN_INFO, | |
1034 | "Magic Mismatch, valid(0x%x) - read(0x%x)", | |
1035 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); | |
aff063e2 | 1036 | return 1; |
a07ef784 | 1037 | } |
aff063e2 | 1038 | |
5c9b4692 | 1039 | /* Currently, support only 4KB page cache size */ |
1040 | if (F2FS_BLKSIZE != PAGE_CACHE_SIZE) { | |
1041 | f2fs_msg(sb, KERN_INFO, | |
14d7e9de | 1042 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
5c9b4692 | 1043 | PAGE_CACHE_SIZE); |
1044 | return 1; | |
1045 | } | |
1046 | ||
aff063e2 JK |
1047 | /* Currently, support only 4KB block size */ |
1048 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); | |
5c9b4692 | 1049 | if (blocksize != F2FS_BLKSIZE) { |
a07ef784 NJ |
1050 | f2fs_msg(sb, KERN_INFO, |
1051 | "Invalid blocksize (%u), supports only 4KB\n", | |
1052 | blocksize); | |
aff063e2 | 1053 | return 1; |
a07ef784 | 1054 | } |
5c9b4692 | 1055 | |
9a59b62f CY |
1056 | /* check log blocks per segment */ |
1057 | if (le32_to_cpu(raw_super->log_blocks_per_seg) != 9) { | |
1058 | f2fs_msg(sb, KERN_INFO, | |
1059 | "Invalid log blocks per segment (%u)\n", | |
1060 | le32_to_cpu(raw_super->log_blocks_per_seg)); | |
1061 | return 1; | |
1062 | } | |
1063 | ||
55cf9cb6 CY |
1064 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
1065 | if (le32_to_cpu(raw_super->log_sectorsize) > | |
1066 | F2FS_MAX_LOG_SECTOR_SIZE || | |
1067 | le32_to_cpu(raw_super->log_sectorsize) < | |
1068 | F2FS_MIN_LOG_SECTOR_SIZE) { | |
1069 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", | |
1070 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1071 | return 1; |
a07ef784 | 1072 | } |
55cf9cb6 CY |
1073 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
1074 | le32_to_cpu(raw_super->log_sectorsize) != | |
1075 | F2FS_MAX_LOG_SECTOR_SIZE) { | |
1076 | f2fs_msg(sb, KERN_INFO, | |
1077 | "Invalid log sectors per block(%u) log sectorsize(%u)", | |
1078 | le32_to_cpu(raw_super->log_sectors_per_block), | |
1079 | le32_to_cpu(raw_super->log_sectorsize)); | |
aff063e2 | 1080 | return 1; |
a07ef784 | 1081 | } |
9a59b62f CY |
1082 | |
1083 | /* check reserved ino info */ | |
1084 | if (le32_to_cpu(raw_super->node_ino) != 1 || | |
1085 | le32_to_cpu(raw_super->meta_ino) != 2 || | |
1086 | le32_to_cpu(raw_super->root_ino) != 3) { | |
1087 | f2fs_msg(sb, KERN_INFO, | |
1088 | "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)", | |
1089 | le32_to_cpu(raw_super->node_ino), | |
1090 | le32_to_cpu(raw_super->meta_ino), | |
1091 | le32_to_cpu(raw_super->root_ino)); | |
1092 | return 1; | |
1093 | } | |
1094 | ||
1095 | /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */ | |
1096 | if (sanity_check_area_boundary(sb, raw_super)) | |
1097 | return 1; | |
1098 | ||
aff063e2 JK |
1099 | return 0; |
1100 | } | |
1101 | ||
577e3495 | 1102 | static int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
aff063e2 JK |
1103 | { |
1104 | unsigned int total, fsmeta; | |
577e3495 JK |
1105 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
1106 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); | |
aff063e2 JK |
1107 | |
1108 | total = le32_to_cpu(raw_super->segment_count); | |
1109 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); | |
1110 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); | |
1111 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); | |
1112 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); | |
1113 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); | |
1114 | ||
6bacf52f | 1115 | if (unlikely(fsmeta >= total)) |
aff063e2 | 1116 | return 1; |
577e3495 | 1117 | |
1e968fdf | 1118 | if (unlikely(f2fs_cp_error(sbi))) { |
577e3495 JK |
1119 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
1120 | return 1; | |
1121 | } | |
aff063e2 JK |
1122 | return 0; |
1123 | } | |
1124 | ||
1125 | static void init_sb_info(struct f2fs_sb_info *sbi) | |
1126 | { | |
1127 | struct f2fs_super_block *raw_super = sbi->raw_super; | |
1128 | int i; | |
1129 | ||
1130 | sbi->log_sectors_per_block = | |
1131 | le32_to_cpu(raw_super->log_sectors_per_block); | |
1132 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); | |
1133 | sbi->blocksize = 1 << sbi->log_blocksize; | |
1134 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); | |
1135 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; | |
1136 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); | |
1137 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); | |
1138 | sbi->total_sections = le32_to_cpu(raw_super->section_count); | |
1139 | sbi->total_node_count = | |
1140 | (le32_to_cpu(raw_super->segment_count_nat) / 2) | |
1141 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; | |
1142 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); | |
1143 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); | |
1144 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); | |
5ec4e49f | 1145 | sbi->cur_victim_sec = NULL_SECNO; |
b1c57c1c | 1146 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
aff063e2 JK |
1147 | |
1148 | for (i = 0; i < NR_COUNT_TYPE; i++) | |
1149 | atomic_set(&sbi->nr_pages[i], 0); | |
ab9fa662 JK |
1150 | |
1151 | sbi->dir_level = DEF_DIR_LEVEL; | |
6beceb54 | 1152 | sbi->interval_time[CP_TIME] = DEF_CP_INTERVAL; |
d0239e1b | 1153 | sbi->interval_time[REQ_TIME] = DEF_IDLE_INTERVAL; |
caf0047e | 1154 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
2658e50d JK |
1155 | |
1156 | INIT_LIST_HEAD(&sbi->s_list); | |
1157 | mutex_init(&sbi->umount_mutex); | |
aff063e2 JK |
1158 | } |
1159 | ||
9076a75f GZ |
1160 | /* |
1161 | * Read f2fs raw super block. | |
1162 | * Because we have two copies of super block, so read the first one at first, | |
1163 | * if the first one is invalid, move to read the second one. | |
1164 | */ | |
1165 | static int read_raw_super_block(struct super_block *sb, | |
1166 | struct f2fs_super_block **raw_super, | |
e8240f65 | 1167 | int *valid_super_block, int *recovery) |
14d7e9de | 1168 | { |
9076a75f | 1169 | int block = 0; |
e8240f65 CY |
1170 | struct buffer_head *bh; |
1171 | struct f2fs_super_block *super, *buf; | |
da554e48 | 1172 | int err = 0; |
14d7e9de | 1173 | |
b39f0de2 YH |
1174 | super = kzalloc(sizeof(struct f2fs_super_block), GFP_KERNEL); |
1175 | if (!super) | |
1176 | return -ENOMEM; | |
9076a75f | 1177 | retry: |
e8240f65 CY |
1178 | bh = sb_bread(sb, block); |
1179 | if (!bh) { | |
da554e48 | 1180 | *recovery = 1; |
9076a75f GZ |
1181 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", |
1182 | block + 1); | |
e8240f65 CY |
1183 | err = -EIO; |
1184 | goto next; | |
14d7e9de | 1185 | } |
1186 | ||
e8240f65 | 1187 | buf = (struct f2fs_super_block *)(bh->b_data + F2FS_SUPER_OFFSET); |
14d7e9de | 1188 | |
1189 | /* sanity checking of raw super */ | |
e8240f65 CY |
1190 | if (sanity_check_raw_super(sb, buf)) { |
1191 | brelse(bh); | |
da554e48 | 1192 | *recovery = 1; |
6c311ec6 CF |
1193 | f2fs_msg(sb, KERN_ERR, |
1194 | "Can't find valid F2FS filesystem in %dth superblock", | |
1195 | block + 1); | |
e8240f65 CY |
1196 | err = -EINVAL; |
1197 | goto next; | |
9076a75f | 1198 | } |
14d7e9de | 1199 | |
da554e48 | 1200 | if (!*raw_super) { |
e8240f65 CY |
1201 | memcpy(super, buf, sizeof(*super)); |
1202 | *valid_super_block = block; | |
da554e48 | 1203 | *raw_super = super; |
da554e48 | 1204 | } |
e8240f65 | 1205 | brelse(bh); |
da554e48 | 1206 | |
e8240f65 | 1207 | next: |
da554e48 | 1208 | /* check the validity of the second superblock */ |
1209 | if (block == 0) { | |
1210 | block++; | |
1211 | goto retry; | |
1212 | } | |
1213 | ||
da554e48 | 1214 | /* No valid superblock */ |
b39f0de2 YH |
1215 | if (!*raw_super) { |
1216 | kfree(super); | |
da554e48 | 1217 | return err; |
b39f0de2 | 1218 | } |
da554e48 | 1219 | |
9076a75f | 1220 | return 0; |
14d7e9de | 1221 | } |
1222 | ||
06d6f226 | 1223 | static int __f2fs_commit_super(struct f2fs_sb_info *sbi, int block) |
26d815ad | 1224 | { |
b39f0de2 | 1225 | struct f2fs_super_block *super = F2FS_RAW_SUPER(sbi); |
5d909cdb | 1226 | struct buffer_head *bh; |
26d815ad JK |
1227 | int err; |
1228 | ||
b3980910 | 1229 | bh = sb_getblk(sbi->sb, block); |
5d909cdb JK |
1230 | if (!bh) |
1231 | return -EIO; | |
26d815ad | 1232 | |
5d909cdb | 1233 | lock_buffer(bh); |
b39f0de2 | 1234 | memcpy(bh->b_data + F2FS_SUPER_OFFSET, super, sizeof(*super)); |
5d909cdb JK |
1235 | set_buffer_uptodate(bh); |
1236 | set_buffer_dirty(bh); | |
1237 | unlock_buffer(bh); | |
1238 | ||
1239 | /* it's rare case, we can do fua all the time */ | |
1240 | err = __sync_dirty_buffer(bh, WRITE_FLUSH_FUA); | |
1241 | brelse(bh); | |
c5bda1c8 | 1242 | |
b3980910 CY |
1243 | return err; |
1244 | } | |
1245 | ||
1246 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) | |
1247 | { | |
1248 | int err; | |
1249 | ||
1250 | /* write back-up superblock first */ | |
1251 | err = __f2fs_commit_super(sbi, sbi->valid_super_block ? 0 : 1); | |
1252 | ||
c5bda1c8 CY |
1253 | /* if we are in recovery path, skip writing valid superblock */ |
1254 | if (recover || err) | |
5d909cdb | 1255 | return err; |
26d815ad JK |
1256 | |
1257 | /* write current valid superblock */ | |
b3980910 | 1258 | return __f2fs_commit_super(sbi, sbi->valid_super_block); |
26d815ad JK |
1259 | } |
1260 | ||
aff063e2 JK |
1261 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
1262 | { | |
1263 | struct f2fs_sb_info *sbi; | |
da554e48 | 1264 | struct f2fs_super_block *raw_super; |
aff063e2 | 1265 | struct inode *root; |
da554e48 | 1266 | long err; |
2adc3505 | 1267 | bool retry = true, need_fsck = false; |
dabc4a5c | 1268 | char *options = NULL; |
e8240f65 | 1269 | int recovery, i, valid_super_block; |
8f1dbbbb | 1270 | struct curseg_info *seg_i; |
aff063e2 | 1271 | |
ed2e621a | 1272 | try_onemore: |
da554e48 | 1273 | err = -EINVAL; |
1274 | raw_super = NULL; | |
e8240f65 | 1275 | valid_super_block = -1; |
da554e48 | 1276 | recovery = 0; |
1277 | ||
aff063e2 JK |
1278 | /* allocate memory for f2fs-specific super block info */ |
1279 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); | |
1280 | if (!sbi) | |
1281 | return -ENOMEM; | |
1282 | ||
ff9234ad | 1283 | /* set a block size */ |
6bacf52f | 1284 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
a07ef784 | 1285 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
aff063e2 | 1286 | goto free_sbi; |
a07ef784 | 1287 | } |
aff063e2 | 1288 | |
e8240f65 CY |
1289 | err = read_raw_super_block(sb, &raw_super, &valid_super_block, |
1290 | &recovery); | |
9076a75f GZ |
1291 | if (err) |
1292 | goto free_sbi; | |
1293 | ||
5fb08372 | 1294 | sb->s_fs_info = sbi; |
498c5e9f | 1295 | default_options(sbi); |
aff063e2 | 1296 | /* parse mount options */ |
dabc4a5c JK |
1297 | options = kstrdup((const char *)data, GFP_KERNEL); |
1298 | if (data && !options) { | |
1299 | err = -ENOMEM; | |
aff063e2 | 1300 | goto free_sb_buf; |
dabc4a5c JK |
1301 | } |
1302 | ||
1303 | err = parse_options(sb, options); | |
1304 | if (err) | |
1305 | goto free_options; | |
aff063e2 | 1306 | |
e0afc4d6 CY |
1307 | sbi->max_file_blocks = max_file_blocks(); |
1308 | sb->s_maxbytes = sbi->max_file_blocks << | |
1309 | le32_to_cpu(raw_super->log_blocksize); | |
aff063e2 JK |
1310 | sb->s_max_links = F2FS_LINK_MAX; |
1311 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); | |
1312 | ||
1313 | sb->s_op = &f2fs_sops; | |
1314 | sb->s_xattr = f2fs_xattr_handlers; | |
1315 | sb->s_export_op = &f2fs_export_ops; | |
1316 | sb->s_magic = F2FS_SUPER_MAGIC; | |
aff063e2 JK |
1317 | sb->s_time_gran = 1; |
1318 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | | |
1319 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); | |
1320 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); | |
1321 | ||
1322 | /* init f2fs-specific super block info */ | |
1323 | sbi->sb = sb; | |
1324 | sbi->raw_super = raw_super; | |
e8240f65 | 1325 | sbi->valid_super_block = valid_super_block; |
aff063e2 | 1326 | mutex_init(&sbi->gc_mutex); |
5463e7c1 | 1327 | mutex_init(&sbi->writepages); |
aff063e2 | 1328 | mutex_init(&sbi->cp_mutex); |
b3582c68 | 1329 | init_rwsem(&sbi->node_write); |
315df839 JK |
1330 | |
1331 | /* disallow all the data/node/meta page writes */ | |
1332 | set_sbi_flag(sbi, SBI_POR_DOING); | |
aff063e2 | 1333 | spin_lock_init(&sbi->stat_lock); |
971767ca | 1334 | |
df0f8dc0 | 1335 | init_rwsem(&sbi->read_io.io_rwsem); |
458e6197 JK |
1336 | sbi->read_io.sbi = sbi; |
1337 | sbi->read_io.bio = NULL; | |
1338 | for (i = 0; i < NR_PAGE_TYPE; i++) { | |
df0f8dc0 | 1339 | init_rwsem(&sbi->write_io[i].io_rwsem); |
458e6197 JK |
1340 | sbi->write_io[i].sbi = sbi; |
1341 | sbi->write_io[i].bio = NULL; | |
1342 | } | |
971767ca | 1343 | |
e479556b | 1344 | init_rwsem(&sbi->cp_rwsem); |
fb51b5ef | 1345 | init_waitqueue_head(&sbi->cp_wait); |
aff063e2 JK |
1346 | init_sb_info(sbi); |
1347 | ||
1348 | /* get an inode for meta space */ | |
1349 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); | |
1350 | if (IS_ERR(sbi->meta_inode)) { | |
a07ef784 | 1351 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
aff063e2 | 1352 | err = PTR_ERR(sbi->meta_inode); |
dabc4a5c | 1353 | goto free_options; |
aff063e2 JK |
1354 | } |
1355 | ||
1356 | err = get_valid_checkpoint(sbi); | |
a07ef784 NJ |
1357 | if (err) { |
1358 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); | |
aff063e2 | 1359 | goto free_meta_inode; |
a07ef784 | 1360 | } |
aff063e2 JK |
1361 | |
1362 | /* sanity checking of checkpoint */ | |
1363 | err = -EINVAL; | |
577e3495 | 1364 | if (sanity_check_ckpt(sbi)) { |
a07ef784 | 1365 | f2fs_msg(sb, KERN_ERR, "Invalid F2FS checkpoint"); |
aff063e2 | 1366 | goto free_cp; |
a07ef784 | 1367 | } |
aff063e2 JK |
1368 | |
1369 | sbi->total_valid_node_count = | |
1370 | le32_to_cpu(sbi->ckpt->valid_node_count); | |
1371 | sbi->total_valid_inode_count = | |
1372 | le32_to_cpu(sbi->ckpt->valid_inode_count); | |
1373 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); | |
1374 | sbi->total_valid_block_count = | |
1375 | le64_to_cpu(sbi->ckpt->valid_block_count); | |
1376 | sbi->last_valid_block_count = sbi->total_valid_block_count; | |
1377 | sbi->alloc_valid_block_count = 0; | |
c227f912 CY |
1378 | for (i = 0; i < NR_INODE_TYPE; i++) { |
1379 | INIT_LIST_HEAD(&sbi->inode_list[i]); | |
1380 | spin_lock_init(&sbi->inode_lock[i]); | |
1381 | } | |
aff063e2 | 1382 | |
1dcc336b CY |
1383 | init_extent_cache_info(sbi); |
1384 | ||
6451e041 | 1385 | init_ino_entry_info(sbi); |
aff063e2 JK |
1386 | |
1387 | /* setup f2fs internal modules */ | |
1388 | err = build_segment_manager(sbi); | |
a07ef784 NJ |
1389 | if (err) { |
1390 | f2fs_msg(sb, KERN_ERR, | |
1391 | "Failed to initialize F2FS segment manager"); | |
aff063e2 | 1392 | goto free_sm; |
a07ef784 | 1393 | } |
aff063e2 | 1394 | err = build_node_manager(sbi); |
a07ef784 NJ |
1395 | if (err) { |
1396 | f2fs_msg(sb, KERN_ERR, | |
1397 | "Failed to initialize F2FS node manager"); | |
aff063e2 | 1398 | goto free_nm; |
a07ef784 | 1399 | } |
aff063e2 | 1400 | |
8f1dbbbb SL |
1401 | /* For write statistics */ |
1402 | if (sb->s_bdev->bd_part) | |
1403 | sbi->sectors_written_start = | |
1404 | (u64)part_stat_read(sb->s_bdev->bd_part, sectors[1]); | |
1405 | ||
1406 | /* Read accumulated write IO statistics if exists */ | |
1407 | seg_i = CURSEG_I(sbi, CURSEG_HOT_NODE); | |
1408 | if (__exist_node_summaries(sbi)) | |
1409 | sbi->kbytes_written = | |
1410 | le64_to_cpu(seg_i->sum_blk->info.kbytes_written); | |
1411 | ||
aff063e2 JK |
1412 | build_gc_manager(sbi); |
1413 | ||
1414 | /* get an inode for node space */ | |
1415 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); | |
1416 | if (IS_ERR(sbi->node_inode)) { | |
a07ef784 | 1417 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
aff063e2 JK |
1418 | err = PTR_ERR(sbi->node_inode); |
1419 | goto free_nm; | |
1420 | } | |
1421 | ||
2658e50d JK |
1422 | f2fs_join_shrinker(sbi); |
1423 | ||
aff063e2 | 1424 | /* if there are nt orphan nodes free them */ |
8c14bfad CY |
1425 | err = recover_orphan_inodes(sbi); |
1426 | if (err) | |
1427 | goto free_node_inode; | |
aff063e2 JK |
1428 | |
1429 | /* read root inode and dentry */ | |
1430 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); | |
1431 | if (IS_ERR(root)) { | |
a07ef784 | 1432 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
aff063e2 JK |
1433 | err = PTR_ERR(root); |
1434 | goto free_node_inode; | |
1435 | } | |
8f99a946 | 1436 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
9d847950 | 1437 | iput(root); |
8f99a946 | 1438 | err = -EINVAL; |
9d847950 | 1439 | goto free_node_inode; |
8f99a946 | 1440 | } |
aff063e2 JK |
1441 | |
1442 | sb->s_root = d_make_root(root); /* allocate root dentry */ | |
1443 | if (!sb->s_root) { | |
1444 | err = -ENOMEM; | |
1445 | goto free_root_inode; | |
1446 | } | |
1447 | ||
aff063e2 JK |
1448 | err = f2fs_build_stats(sbi); |
1449 | if (err) | |
6437d1b0 | 1450 | goto free_root_inode; |
aff063e2 | 1451 | |
5e176d54 JK |
1452 | if (f2fs_proc_root) |
1453 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); | |
1454 | ||
1455 | if (sbi->s_proc) | |
1456 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, | |
1457 | &f2fs_seq_segment_info_fops, sb); | |
1458 | ||
b59d0bae NJ |
1459 | sbi->s_kobj.kset = f2fs_kset; |
1460 | init_completion(&sbi->s_kobj_unregister); | |
1461 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, | |
1462 | "%s", sb->s_id); | |
1463 | if (err) | |
6437d1b0 | 1464 | goto free_proc; |
b59d0bae | 1465 | |
6437d1b0 JK |
1466 | /* recover fsynced data */ |
1467 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { | |
081d78c2 JK |
1468 | /* |
1469 | * mount should be failed, when device has readonly mode, and | |
1470 | * previous checkpoint was not done by clean system shutdown. | |
1471 | */ | |
1472 | if (bdev_read_only(sb->s_bdev) && | |
1473 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { | |
1474 | err = -EROFS; | |
1475 | goto free_kobj; | |
1476 | } | |
2adc3505 CY |
1477 | |
1478 | if (need_fsck) | |
1479 | set_sbi_flag(sbi, SBI_NEED_FSCK); | |
1480 | ||
6437d1b0 | 1481 | err = recover_fsync_data(sbi); |
ed2e621a | 1482 | if (err) { |
2adc3505 | 1483 | need_fsck = true; |
6437d1b0 JK |
1484 | f2fs_msg(sb, KERN_ERR, |
1485 | "Cannot recover all fsync data errno=%ld", err); | |
ed2e621a JK |
1486 | goto free_kobj; |
1487 | } | |
6437d1b0 | 1488 | } |
315df839 JK |
1489 | /* recover_fsync_data() cleared this already */ |
1490 | clear_sbi_flag(sbi, SBI_POR_DOING); | |
b59d0bae | 1491 | |
6437d1b0 JK |
1492 | /* |
1493 | * If filesystem is not mounted as read-only then | |
1494 | * do start the gc_thread. | |
1495 | */ | |
6c029932 | 1496 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
6437d1b0 JK |
1497 | /* After POR, we can run background GC thread.*/ |
1498 | err = start_gc_thread(sbi); | |
1499 | if (err) | |
1500 | goto free_kobj; | |
1501 | } | |
dabc4a5c | 1502 | kfree(options); |
da554e48 | 1503 | |
1504 | /* recover broken superblock */ | |
1505 | if (recovery && !f2fs_readonly(sb) && !bdev_read_only(sb->s_bdev)) { | |
1506 | f2fs_msg(sb, KERN_INFO, "Recover invalid superblock"); | |
c5bda1c8 | 1507 | f2fs_commit_super(sbi, true); |
da554e48 | 1508 | } |
1509 | ||
6beceb54 | 1510 | f2fs_update_time(sbi, CP_TIME); |
d0239e1b | 1511 | f2fs_update_time(sbi, REQ_TIME); |
aff063e2 | 1512 | return 0; |
6437d1b0 JK |
1513 | |
1514 | free_kobj: | |
1515 | kobject_del(&sbi->s_kobj); | |
29ba108d CY |
1516 | kobject_put(&sbi->s_kobj); |
1517 | wait_for_completion(&sbi->s_kobj_unregister); | |
6437d1b0 | 1518 | free_proc: |
1d15bd20 CY |
1519 | if (sbi->s_proc) { |
1520 | remove_proc_entry("segment_info", sbi->s_proc); | |
1521 | remove_proc_entry(sb->s_id, f2fs_proc_root); | |
1522 | } | |
1523 | f2fs_destroy_stats(sbi); | |
aff063e2 JK |
1524 | free_root_inode: |
1525 | dput(sb->s_root); | |
1526 | sb->s_root = NULL; | |
1527 | free_node_inode: | |
2658e50d JK |
1528 | mutex_lock(&sbi->umount_mutex); |
1529 | f2fs_leave_shrinker(sbi); | |
aff063e2 | 1530 | iput(sbi->node_inode); |
2658e50d | 1531 | mutex_unlock(&sbi->umount_mutex); |
aff063e2 JK |
1532 | free_nm: |
1533 | destroy_node_manager(sbi); | |
1534 | free_sm: | |
1535 | destroy_segment_manager(sbi); | |
1536 | free_cp: | |
1537 | kfree(sbi->ckpt); | |
1538 | free_meta_inode: | |
1539 | make_bad_inode(sbi->meta_inode); | |
1540 | iput(sbi->meta_inode); | |
dabc4a5c JK |
1541 | free_options: |
1542 | kfree(options); | |
aff063e2 | 1543 | free_sb_buf: |
b39f0de2 | 1544 | kfree(raw_super); |
aff063e2 JK |
1545 | free_sbi: |
1546 | kfree(sbi); | |
ed2e621a JK |
1547 | |
1548 | /* give only one another chance */ | |
1549 | if (retry) { | |
9df47ba7 | 1550 | retry = false; |
ed2e621a JK |
1551 | shrink_dcache_sb(sb); |
1552 | goto try_onemore; | |
1553 | } | |
aff063e2 JK |
1554 | return err; |
1555 | } | |
1556 | ||
1557 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, | |
1558 | const char *dev_name, void *data) | |
1559 | { | |
1560 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); | |
1561 | } | |
1562 | ||
30a5537f JK |
1563 | static void kill_f2fs_super(struct super_block *sb) |
1564 | { | |
1565 | if (sb->s_root) | |
caf0047e | 1566 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
30a5537f JK |
1567 | kill_block_super(sb); |
1568 | } | |
1569 | ||
aff063e2 JK |
1570 | static struct file_system_type f2fs_fs_type = { |
1571 | .owner = THIS_MODULE, | |
1572 | .name = "f2fs", | |
1573 | .mount = f2fs_mount, | |
30a5537f | 1574 | .kill_sb = kill_f2fs_super, |
aff063e2 JK |
1575 | .fs_flags = FS_REQUIRES_DEV, |
1576 | }; | |
7f78e035 | 1577 | MODULE_ALIAS_FS("f2fs"); |
aff063e2 | 1578 | |
6e6093a8 | 1579 | static int __init init_inodecache(void) |
aff063e2 | 1580 | { |
5d097056 VD |
1581 | f2fs_inode_cachep = kmem_cache_create("f2fs_inode_cache", |
1582 | sizeof(struct f2fs_inode_info), 0, | |
1583 | SLAB_RECLAIM_ACCOUNT|SLAB_ACCOUNT, NULL); | |
6bacf52f | 1584 | if (!f2fs_inode_cachep) |
aff063e2 JK |
1585 | return -ENOMEM; |
1586 | return 0; | |
1587 | } | |
1588 | ||
1589 | static void destroy_inodecache(void) | |
1590 | { | |
1591 | /* | |
1592 | * Make sure all delayed rcu free inodes are flushed before we | |
1593 | * destroy cache. | |
1594 | */ | |
1595 | rcu_barrier(); | |
1596 | kmem_cache_destroy(f2fs_inode_cachep); | |
1597 | } | |
1598 | ||
1599 | static int __init init_f2fs_fs(void) | |
1600 | { | |
1601 | int err; | |
1602 | ||
c0508650 JK |
1603 | f2fs_build_trace_ios(); |
1604 | ||
aff063e2 JK |
1605 | err = init_inodecache(); |
1606 | if (err) | |
1607 | goto fail; | |
1608 | err = create_node_manager_caches(); | |
1609 | if (err) | |
9890ff3f | 1610 | goto free_inodecache; |
7fd9e544 | 1611 | err = create_segment_manager_caches(); |
aff063e2 | 1612 | if (err) |
9890ff3f | 1613 | goto free_node_manager_caches; |
aff063e2 JK |
1614 | err = create_checkpoint_caches(); |
1615 | if (err) | |
06292073 | 1616 | goto free_segment_manager_caches; |
1dcc336b CY |
1617 | err = create_extent_cache(); |
1618 | if (err) | |
1619 | goto free_checkpoint_caches; | |
b59d0bae | 1620 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
6e6b978c WY |
1621 | if (!f2fs_kset) { |
1622 | err = -ENOMEM; | |
1dcc336b | 1623 | goto free_extent_cache; |
6e6b978c | 1624 | } |
cfc4d971 | 1625 | err = f2fs_init_crypto(); |
4589d25d | 1626 | if (err) |
9890ff3f | 1627 | goto free_kset; |
2658e50d JK |
1628 | |
1629 | err = register_shrinker(&f2fs_shrinker_info); | |
cfc4d971 JK |
1630 | if (err) |
1631 | goto free_crypto; | |
2658e50d JK |
1632 | |
1633 | err = register_filesystem(&f2fs_fs_type); | |
1634 | if (err) | |
1635 | goto free_shrinker; | |
787c7b8c CY |
1636 | err = f2fs_create_root_stats(); |
1637 | if (err) | |
1638 | goto free_filesystem; | |
5e176d54 | 1639 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
9890ff3f ZH |
1640 | return 0; |
1641 | ||
787c7b8c CY |
1642 | free_filesystem: |
1643 | unregister_filesystem(&f2fs_fs_type); | |
2658e50d JK |
1644 | free_shrinker: |
1645 | unregister_shrinker(&f2fs_shrinker_info); | |
cfc4d971 JK |
1646 | free_crypto: |
1647 | f2fs_exit_crypto(); | |
9890ff3f ZH |
1648 | free_kset: |
1649 | kset_unregister(f2fs_kset); | |
1dcc336b CY |
1650 | free_extent_cache: |
1651 | destroy_extent_cache(); | |
9890ff3f ZH |
1652 | free_checkpoint_caches: |
1653 | destroy_checkpoint_caches(); | |
7fd9e544 JK |
1654 | free_segment_manager_caches: |
1655 | destroy_segment_manager_caches(); | |
9890ff3f ZH |
1656 | free_node_manager_caches: |
1657 | destroy_node_manager_caches(); | |
1658 | free_inodecache: | |
1659 | destroy_inodecache(); | |
aff063e2 JK |
1660 | fail: |
1661 | return err; | |
1662 | } | |
1663 | ||
1664 | static void __exit exit_f2fs_fs(void) | |
1665 | { | |
5e176d54 | 1666 | remove_proc_entry("fs/f2fs", NULL); |
4589d25d | 1667 | f2fs_destroy_root_stats(); |
2658e50d | 1668 | unregister_shrinker(&f2fs_shrinker_info); |
aff063e2 | 1669 | unregister_filesystem(&f2fs_fs_type); |
cfc4d971 | 1670 | f2fs_exit_crypto(); |
fdf6c8be | 1671 | destroy_extent_cache(); |
aff063e2 | 1672 | destroy_checkpoint_caches(); |
5dcd8a71 | 1673 | destroy_segment_manager_caches(); |
aff063e2 JK |
1674 | destroy_node_manager_caches(); |
1675 | destroy_inodecache(); | |
b59d0bae | 1676 | kset_unregister(f2fs_kset); |
351f4fba | 1677 | f2fs_destroy_trace_ios(); |
aff063e2 JK |
1678 | } |
1679 | ||
1680 | module_init(init_f2fs_fs) | |
1681 | module_exit(exit_f2fs_fs) | |
1682 | ||
1683 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); | |
1684 | MODULE_DESCRIPTION("Flash Friendly File System"); | |
1685 | MODULE_LICENSE("GPL"); |