4 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
5 * http://www.samsung.com/
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.
11 #include <linux/module.h>
12 #include <linux/init.h>
14 #include <linux/statfs.h>
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>
21 #include <linux/proc_fs.h>
22 #include <linux/random.h>
23 #include <linux/exportfs.h>
24 #include <linux/blkdev.h>
25 #include <linux/f2fs_fs.h>
26 #include <linux/sysfs.h>
35 #define CREATE_TRACE_POINTS
36 #include <trace/events/f2fs.h>
38 static struct proc_dir_entry
*f2fs_proc_root
;
39 static struct kmem_cache
*f2fs_inode_cachep
;
40 static struct kset
*f2fs_kset
;
42 #ifdef CONFIG_F2FS_FAULT_INJECTION
44 char *fault_name
[FAULT_MAX
] = {
45 [FAULT_KMALLOC
] = "kmalloc",
46 [FAULT_PAGE_ALLOC
] = "page alloc",
47 [FAULT_ALLOC_NID
] = "alloc nid",
48 [FAULT_ORPHAN
] = "orphan",
49 [FAULT_BLOCK
] = "no more block",
50 [FAULT_DIR_DEPTH
] = "too big dir depth",
51 [FAULT_EVICT_INODE
] = "evict_inode fail",
52 [FAULT_IO
] = "IO error",
53 [FAULT_CHECKPOINT
] = "checkpoint error",
56 static void f2fs_build_fault_attr(struct f2fs_sb_info
*sbi
,
59 struct f2fs_fault_info
*ffi
= &sbi
->fault_info
;
62 atomic_set(&ffi
->inject_ops
, 0);
63 ffi
->inject_rate
= rate
;
64 ffi
->inject_type
= (1 << FAULT_MAX
) - 1;
66 memset(ffi
, 0, sizeof(struct f2fs_fault_info
));
71 /* f2fs-wide shrinker description */
72 static struct shrinker f2fs_shrinker_info
= {
73 .scan_objects
= f2fs_shrink_scan
,
74 .count_objects
= f2fs_shrink_count
,
75 .seeks
= DEFAULT_SEEKS
,
80 Opt_disable_roll_forward
,
90 Opt_disable_ext_identify
,
112 static match_table_t f2fs_tokens
= {
113 {Opt_gc_background
, "background_gc=%s"},
114 {Opt_disable_roll_forward
, "disable_roll_forward"},
115 {Opt_norecovery
, "norecovery"},
116 {Opt_discard
, "discard"},
117 {Opt_nodiscard
, "nodiscard"},
118 {Opt_noheap
, "no_heap"},
119 {Opt_user_xattr
, "user_xattr"},
120 {Opt_nouser_xattr
, "nouser_xattr"},
122 {Opt_noacl
, "noacl"},
123 {Opt_active_logs
, "active_logs=%u"},
124 {Opt_disable_ext_identify
, "disable_ext_identify"},
125 {Opt_inline_xattr
, "inline_xattr"},
126 {Opt_noinline_xattr
, "noinline_xattr"},
127 {Opt_inline_data
, "inline_data"},
128 {Opt_inline_dentry
, "inline_dentry"},
129 {Opt_noinline_dentry
, "noinline_dentry"},
130 {Opt_flush_merge
, "flush_merge"},
131 {Opt_noflush_merge
, "noflush_merge"},
132 {Opt_nobarrier
, "nobarrier"},
133 {Opt_fastboot
, "fastboot"},
134 {Opt_extent_cache
, "extent_cache"},
135 {Opt_noextent_cache
, "noextent_cache"},
136 {Opt_noinline_data
, "noinline_data"},
137 {Opt_data_flush
, "data_flush"},
138 {Opt_mode
, "mode=%s"},
139 {Opt_io_size_bits
, "io_bits=%u"},
140 {Opt_fault_injection
, "fault_injection=%u"},
141 {Opt_lazytime
, "lazytime"},
142 {Opt_nolazytime
, "nolazytime"},
146 /* Sysfs support for f2fs */
148 GC_THREAD
, /* struct f2fs_gc_thread */
149 SM_INFO
, /* struct f2fs_sm_info */
150 DCC_INFO
, /* struct discard_cmd_control */
151 NM_INFO
, /* struct f2fs_nm_info */
152 F2FS_SBI
, /* struct f2fs_sb_info */
153 #ifdef CONFIG_F2FS_FAULT_INJECTION
154 FAULT_INFO_RATE
, /* struct f2fs_fault_info */
155 FAULT_INFO_TYPE
, /* struct f2fs_fault_info */
160 struct attribute attr
;
161 ssize_t (*show
)(struct f2fs_attr
*, struct f2fs_sb_info
*, char *);
162 ssize_t (*store
)(struct f2fs_attr
*, struct f2fs_sb_info
*,
163 const char *, size_t);
168 static unsigned char *__struct_ptr(struct f2fs_sb_info
*sbi
, int struct_type
)
170 if (struct_type
== GC_THREAD
)
171 return (unsigned char *)sbi
->gc_thread
;
172 else if (struct_type
== SM_INFO
)
173 return (unsigned char *)SM_I(sbi
);
174 else if (struct_type
== DCC_INFO
)
175 return (unsigned char *)SM_I(sbi
)->dcc_info
;
176 else if (struct_type
== NM_INFO
)
177 return (unsigned char *)NM_I(sbi
);
178 else if (struct_type
== F2FS_SBI
)
179 return (unsigned char *)sbi
;
180 #ifdef CONFIG_F2FS_FAULT_INJECTION
181 else if (struct_type
== FAULT_INFO_RATE
||
182 struct_type
== FAULT_INFO_TYPE
)
183 return (unsigned char *)&sbi
->fault_info
;
188 static ssize_t
lifetime_write_kbytes_show(struct f2fs_attr
*a
,
189 struct f2fs_sb_info
*sbi
, char *buf
)
191 struct super_block
*sb
= sbi
->sb
;
193 if (!sb
->s_bdev
->bd_part
)
194 return snprintf(buf
, PAGE_SIZE
, "0\n");
196 return snprintf(buf
, PAGE_SIZE
, "%llu\n",
197 (unsigned long long)(sbi
->kbytes_written
+
198 BD_PART_WRITTEN(sbi
)));
201 static ssize_t
f2fs_sbi_show(struct f2fs_attr
*a
,
202 struct f2fs_sb_info
*sbi
, char *buf
)
204 unsigned char *ptr
= NULL
;
207 ptr
= __struct_ptr(sbi
, a
->struct_type
);
211 ui
= (unsigned int *)(ptr
+ a
->offset
);
213 return snprintf(buf
, PAGE_SIZE
, "%u\n", *ui
);
216 static ssize_t
f2fs_sbi_store(struct f2fs_attr
*a
,
217 struct f2fs_sb_info
*sbi
,
218 const char *buf
, size_t count
)
225 ptr
= __struct_ptr(sbi
, a
->struct_type
);
229 ui
= (unsigned int *)(ptr
+ a
->offset
);
231 ret
= kstrtoul(skip_spaces(buf
), 0, &t
);
234 #ifdef CONFIG_F2FS_FAULT_INJECTION
235 if (a
->struct_type
== FAULT_INFO_TYPE
&& t
>= (1 << FAULT_MAX
))
242 static ssize_t
f2fs_attr_show(struct kobject
*kobj
,
243 struct attribute
*attr
, char *buf
)
245 struct f2fs_sb_info
*sbi
= container_of(kobj
, struct f2fs_sb_info
,
247 struct f2fs_attr
*a
= container_of(attr
, struct f2fs_attr
, attr
);
249 return a
->show
? a
->show(a
, sbi
, buf
) : 0;
252 static ssize_t
f2fs_attr_store(struct kobject
*kobj
, struct attribute
*attr
,
253 const char *buf
, size_t len
)
255 struct f2fs_sb_info
*sbi
= container_of(kobj
, struct f2fs_sb_info
,
257 struct f2fs_attr
*a
= container_of(attr
, struct f2fs_attr
, attr
);
259 return a
->store
? a
->store(a
, sbi
, buf
, len
) : 0;
262 static void f2fs_sb_release(struct kobject
*kobj
)
264 struct f2fs_sb_info
*sbi
= container_of(kobj
, struct f2fs_sb_info
,
266 complete(&sbi
->s_kobj_unregister
);
269 #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \
270 static struct f2fs_attr f2fs_attr_##_name = { \
271 .attr = {.name = __stringify(_name), .mode = _mode }, \
274 .struct_type = _struct_type, \
278 #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \
279 F2FS_ATTR_OFFSET(struct_type, name, 0644, \
280 f2fs_sbi_show, f2fs_sbi_store, \
281 offsetof(struct struct_name, elname))
283 #define F2FS_GENERAL_RO_ATTR(name) \
284 static struct f2fs_attr f2fs_attr_##name = __ATTR(name, 0444, name##_show, NULL)
286 F2FS_RW_ATTR(GC_THREAD
, f2fs_gc_kthread
, gc_min_sleep_time
, min_sleep_time
);
287 F2FS_RW_ATTR(GC_THREAD
, f2fs_gc_kthread
, gc_max_sleep_time
, max_sleep_time
);
288 F2FS_RW_ATTR(GC_THREAD
, f2fs_gc_kthread
, gc_no_gc_sleep_time
, no_gc_sleep_time
);
289 F2FS_RW_ATTR(GC_THREAD
, f2fs_gc_kthread
, gc_idle
, gc_idle
);
290 F2FS_RW_ATTR(SM_INFO
, f2fs_sm_info
, reclaim_segments
, rec_prefree_segments
);
291 F2FS_RW_ATTR(DCC_INFO
, discard_cmd_control
, max_small_discards
, max_discards
);
292 F2FS_RW_ATTR(SM_INFO
, f2fs_sm_info
, batched_trim_sections
, trim_sections
);
293 F2FS_RW_ATTR(SM_INFO
, f2fs_sm_info
, ipu_policy
, ipu_policy
);
294 F2FS_RW_ATTR(SM_INFO
, f2fs_sm_info
, min_ipu_util
, min_ipu_util
);
295 F2FS_RW_ATTR(SM_INFO
, f2fs_sm_info
, min_fsync_blocks
, min_fsync_blocks
);
296 F2FS_RW_ATTR(NM_INFO
, f2fs_nm_info
, ram_thresh
, ram_thresh
);
297 F2FS_RW_ATTR(NM_INFO
, f2fs_nm_info
, ra_nid_pages
, ra_nid_pages
);
298 F2FS_RW_ATTR(NM_INFO
, f2fs_nm_info
, dirty_nats_ratio
, dirty_nats_ratio
);
299 F2FS_RW_ATTR(F2FS_SBI
, f2fs_sb_info
, max_victim_search
, max_victim_search
);
300 F2FS_RW_ATTR(F2FS_SBI
, f2fs_sb_info
, dir_level
, dir_level
);
301 F2FS_RW_ATTR(F2FS_SBI
, f2fs_sb_info
, cp_interval
, interval_time
[CP_TIME
]);
302 F2FS_RW_ATTR(F2FS_SBI
, f2fs_sb_info
, idle_interval
, interval_time
[REQ_TIME
]);
303 #ifdef CONFIG_F2FS_FAULT_INJECTION
304 F2FS_RW_ATTR(FAULT_INFO_RATE
, f2fs_fault_info
, inject_rate
, inject_rate
);
305 F2FS_RW_ATTR(FAULT_INFO_TYPE
, f2fs_fault_info
, inject_type
, inject_type
);
307 F2FS_GENERAL_RO_ATTR(lifetime_write_kbytes
);
309 #define ATTR_LIST(name) (&f2fs_attr_##name.attr)
310 static struct attribute
*f2fs_attrs
[] = {
311 ATTR_LIST(gc_min_sleep_time
),
312 ATTR_LIST(gc_max_sleep_time
),
313 ATTR_LIST(gc_no_gc_sleep_time
),
315 ATTR_LIST(reclaim_segments
),
316 ATTR_LIST(max_small_discards
),
317 ATTR_LIST(batched_trim_sections
),
318 ATTR_LIST(ipu_policy
),
319 ATTR_LIST(min_ipu_util
),
320 ATTR_LIST(min_fsync_blocks
),
321 ATTR_LIST(max_victim_search
),
322 ATTR_LIST(dir_level
),
323 ATTR_LIST(ram_thresh
),
324 ATTR_LIST(ra_nid_pages
),
325 ATTR_LIST(dirty_nats_ratio
),
326 ATTR_LIST(cp_interval
),
327 ATTR_LIST(idle_interval
),
328 #ifdef CONFIG_F2FS_FAULT_INJECTION
329 ATTR_LIST(inject_rate
),
330 ATTR_LIST(inject_type
),
332 ATTR_LIST(lifetime_write_kbytes
),
336 static const struct sysfs_ops f2fs_attr_ops
= {
337 .show
= f2fs_attr_show
,
338 .store
= f2fs_attr_store
,
341 static struct kobj_type f2fs_ktype
= {
342 .default_attrs
= f2fs_attrs
,
343 .sysfs_ops
= &f2fs_attr_ops
,
344 .release
= f2fs_sb_release
,
347 void f2fs_msg(struct super_block
*sb
, const char *level
, const char *fmt
, ...)
349 struct va_format vaf
;
355 printk("%sF2FS-fs (%s): %pV\n", level
, sb
->s_id
, &vaf
);
359 static void init_once(void *foo
)
361 struct f2fs_inode_info
*fi
= (struct f2fs_inode_info
*) foo
;
363 inode_init_once(&fi
->vfs_inode
);
366 static int parse_options(struct super_block
*sb
, char *options
)
368 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
369 struct request_queue
*q
;
370 substring_t args
[MAX_OPT_ARGS
];
377 while ((p
= strsep(&options
, ",")) != NULL
) {
382 * Initialize args struct so we know whether arg was
383 * found; some options take optional arguments.
385 args
[0].to
= args
[0].from
= NULL
;
386 token
= match_token(p
, f2fs_tokens
, args
);
389 case Opt_gc_background
:
390 name
= match_strdup(&args
[0]);
394 if (strlen(name
) == 2 && !strncmp(name
, "on", 2)) {
396 clear_opt(sbi
, FORCE_FG_GC
);
397 } else if (strlen(name
) == 3 && !strncmp(name
, "off", 3)) {
398 clear_opt(sbi
, BG_GC
);
399 clear_opt(sbi
, FORCE_FG_GC
);
400 } else if (strlen(name
) == 4 && !strncmp(name
, "sync", 4)) {
402 set_opt(sbi
, FORCE_FG_GC
);
409 case Opt_disable_roll_forward
:
410 set_opt(sbi
, DISABLE_ROLL_FORWARD
);
413 /* this option mounts f2fs with ro */
414 set_opt(sbi
, DISABLE_ROLL_FORWARD
);
415 if (!f2fs_readonly(sb
))
419 q
= bdev_get_queue(sb
->s_bdev
);
420 if (blk_queue_discard(q
)) {
421 set_opt(sbi
, DISCARD
);
422 } else if (!f2fs_sb_mounted_blkzoned(sb
)) {
423 f2fs_msg(sb
, KERN_WARNING
,
424 "mounting with \"discard\" option, but "
425 "the device does not support discard");
429 if (f2fs_sb_mounted_blkzoned(sb
)) {
430 f2fs_msg(sb
, KERN_WARNING
,
431 "discard is required for zoned block devices");
434 clear_opt(sbi
, DISCARD
);
437 set_opt(sbi
, NOHEAP
);
439 #ifdef CONFIG_F2FS_FS_XATTR
441 set_opt(sbi
, XATTR_USER
);
443 case Opt_nouser_xattr
:
444 clear_opt(sbi
, XATTR_USER
);
446 case Opt_inline_xattr
:
447 set_opt(sbi
, INLINE_XATTR
);
449 case Opt_noinline_xattr
:
450 clear_opt(sbi
, INLINE_XATTR
);
454 f2fs_msg(sb
, KERN_INFO
,
455 "user_xattr options not supported");
457 case Opt_nouser_xattr
:
458 f2fs_msg(sb
, KERN_INFO
,
459 "nouser_xattr options not supported");
461 case Opt_inline_xattr
:
462 f2fs_msg(sb
, KERN_INFO
,
463 "inline_xattr options not supported");
465 case Opt_noinline_xattr
:
466 f2fs_msg(sb
, KERN_INFO
,
467 "noinline_xattr options not supported");
470 #ifdef CONFIG_F2FS_FS_POSIX_ACL
472 set_opt(sbi
, POSIX_ACL
);
475 clear_opt(sbi
, POSIX_ACL
);
479 f2fs_msg(sb
, KERN_INFO
, "acl options not supported");
482 f2fs_msg(sb
, KERN_INFO
, "noacl options not supported");
485 case Opt_active_logs
:
486 if (args
->from
&& match_int(args
, &arg
))
488 if (arg
!= 2 && arg
!= 4 && arg
!= NR_CURSEG_TYPE
)
490 sbi
->active_logs
= arg
;
492 case Opt_disable_ext_identify
:
493 set_opt(sbi
, DISABLE_EXT_IDENTIFY
);
495 case Opt_inline_data
:
496 set_opt(sbi
, INLINE_DATA
);
498 case Opt_inline_dentry
:
499 set_opt(sbi
, INLINE_DENTRY
);
501 case Opt_noinline_dentry
:
502 clear_opt(sbi
, INLINE_DENTRY
);
504 case Opt_flush_merge
:
505 set_opt(sbi
, FLUSH_MERGE
);
507 case Opt_noflush_merge
:
508 clear_opt(sbi
, FLUSH_MERGE
);
511 set_opt(sbi
, NOBARRIER
);
514 set_opt(sbi
, FASTBOOT
);
516 case Opt_extent_cache
:
517 set_opt(sbi
, EXTENT_CACHE
);
519 case Opt_noextent_cache
:
520 clear_opt(sbi
, EXTENT_CACHE
);
522 case Opt_noinline_data
:
523 clear_opt(sbi
, INLINE_DATA
);
526 set_opt(sbi
, DATA_FLUSH
);
529 name
= match_strdup(&args
[0]);
533 if (strlen(name
) == 8 &&
534 !strncmp(name
, "adaptive", 8)) {
535 if (f2fs_sb_mounted_blkzoned(sb
)) {
536 f2fs_msg(sb
, KERN_WARNING
,
537 "adaptive mode is not allowed with "
538 "zoned block device feature");
542 set_opt_mode(sbi
, F2FS_MOUNT_ADAPTIVE
);
543 } else if (strlen(name
) == 3 &&
544 !strncmp(name
, "lfs", 3)) {
545 set_opt_mode(sbi
, F2FS_MOUNT_LFS
);
552 case Opt_io_size_bits
:
553 if (args
->from
&& match_int(args
, &arg
))
555 if (arg
> __ilog2_u32(BIO_MAX_PAGES
)) {
556 f2fs_msg(sb
, KERN_WARNING
,
557 "Not support %d, larger than %d",
558 1 << arg
, BIO_MAX_PAGES
);
561 sbi
->write_io_size_bits
= arg
;
563 case Opt_fault_injection
:
564 if (args
->from
&& match_int(args
, &arg
))
566 #ifdef CONFIG_F2FS_FAULT_INJECTION
567 f2fs_build_fault_attr(sbi
, arg
);
568 set_opt(sbi
, FAULT_INJECTION
);
570 f2fs_msg(sb
, KERN_INFO
,
571 "FAULT_INJECTION was not selected");
575 sb
->s_flags
|= MS_LAZYTIME
;
578 sb
->s_flags
&= ~MS_LAZYTIME
;
581 f2fs_msg(sb
, KERN_ERR
,
582 "Unrecognized mount option \"%s\" or missing value",
588 if (F2FS_IO_SIZE_BITS(sbi
) && !test_opt(sbi
, LFS
)) {
589 f2fs_msg(sb
, KERN_ERR
,
590 "Should set mode=lfs with %uKB-sized IO",
591 F2FS_IO_SIZE_KB(sbi
));
597 static struct inode
*f2fs_alloc_inode(struct super_block
*sb
)
599 struct f2fs_inode_info
*fi
;
601 fi
= kmem_cache_alloc(f2fs_inode_cachep
, GFP_F2FS_ZERO
);
605 init_once((void *) fi
);
607 /* Initialize f2fs-specific inode info */
608 fi
->vfs_inode
.i_version
= 1;
609 atomic_set(&fi
->dirty_pages
, 0);
610 fi
->i_current_depth
= 1;
612 init_rwsem(&fi
->i_sem
);
613 INIT_LIST_HEAD(&fi
->dirty_list
);
614 INIT_LIST_HEAD(&fi
->gdirty_list
);
615 INIT_LIST_HEAD(&fi
->inmem_pages
);
616 mutex_init(&fi
->inmem_lock
);
617 init_rwsem(&fi
->dio_rwsem
[READ
]);
618 init_rwsem(&fi
->dio_rwsem
[WRITE
]);
620 /* Will be used by directory only */
621 fi
->i_dir_level
= F2FS_SB(sb
)->dir_level
;
622 return &fi
->vfs_inode
;
625 static int f2fs_drop_inode(struct inode
*inode
)
629 * This is to avoid a deadlock condition like below.
630 * writeback_single_inode(inode)
631 * - f2fs_write_data_page
632 * - f2fs_gc -> iput -> evict
633 * - inode_wait_for_writeback(inode)
635 if ((!inode_unhashed(inode
) && inode
->i_state
& I_SYNC
)) {
636 if (!inode
->i_nlink
&& !is_bad_inode(inode
)) {
637 /* to avoid evict_inode call simultaneously */
638 atomic_inc(&inode
->i_count
);
639 spin_unlock(&inode
->i_lock
);
641 /* some remained atomic pages should discarded */
642 if (f2fs_is_atomic_file(inode
))
643 drop_inmem_pages(inode
);
645 /* should remain fi->extent_tree for writepage */
646 f2fs_destroy_extent_node(inode
);
648 sb_start_intwrite(inode
->i_sb
);
649 f2fs_i_size_write(inode
, 0);
651 if (F2FS_HAS_BLOCKS(inode
))
652 f2fs_truncate(inode
);
654 sb_end_intwrite(inode
->i_sb
);
656 fscrypt_put_encryption_info(inode
, NULL
);
657 spin_lock(&inode
->i_lock
);
658 atomic_dec(&inode
->i_count
);
660 trace_f2fs_drop_inode(inode
, 0);
663 ret
= generic_drop_inode(inode
);
664 trace_f2fs_drop_inode(inode
, ret
);
668 int f2fs_inode_dirtied(struct inode
*inode
, bool sync
)
670 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
673 spin_lock(&sbi
->inode_lock
[DIRTY_META
]);
674 if (is_inode_flag_set(inode
, FI_DIRTY_INODE
)) {
677 set_inode_flag(inode
, FI_DIRTY_INODE
);
678 stat_inc_dirty_inode(sbi
, DIRTY_META
);
680 if (sync
&& list_empty(&F2FS_I(inode
)->gdirty_list
)) {
681 list_add_tail(&F2FS_I(inode
)->gdirty_list
,
682 &sbi
->inode_list
[DIRTY_META
]);
683 inc_page_count(sbi
, F2FS_DIRTY_IMETA
);
685 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
689 void f2fs_inode_synced(struct inode
*inode
)
691 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
693 spin_lock(&sbi
->inode_lock
[DIRTY_META
]);
694 if (!is_inode_flag_set(inode
, FI_DIRTY_INODE
)) {
695 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
698 if (!list_empty(&F2FS_I(inode
)->gdirty_list
)) {
699 list_del_init(&F2FS_I(inode
)->gdirty_list
);
700 dec_page_count(sbi
, F2FS_DIRTY_IMETA
);
702 clear_inode_flag(inode
, FI_DIRTY_INODE
);
703 clear_inode_flag(inode
, FI_AUTO_RECOVER
);
704 stat_dec_dirty_inode(F2FS_I_SB(inode
), DIRTY_META
);
705 spin_unlock(&sbi
->inode_lock
[DIRTY_META
]);
709 * f2fs_dirty_inode() is called from __mark_inode_dirty()
711 * We should call set_dirty_inode to write the dirty inode through write_inode.
713 static void f2fs_dirty_inode(struct inode
*inode
, int flags
)
715 struct f2fs_sb_info
*sbi
= F2FS_I_SB(inode
);
717 if (inode
->i_ino
== F2FS_NODE_INO(sbi
) ||
718 inode
->i_ino
== F2FS_META_INO(sbi
))
721 if (flags
== I_DIRTY_TIME
)
724 if (is_inode_flag_set(inode
, FI_AUTO_RECOVER
))
725 clear_inode_flag(inode
, FI_AUTO_RECOVER
);
727 f2fs_inode_dirtied(inode
, false);
730 static void f2fs_i_callback(struct rcu_head
*head
)
732 struct inode
*inode
= container_of(head
, struct inode
, i_rcu
);
733 kmem_cache_free(f2fs_inode_cachep
, F2FS_I(inode
));
736 static void f2fs_destroy_inode(struct inode
*inode
)
738 call_rcu(&inode
->i_rcu
, f2fs_i_callback
);
741 static void destroy_percpu_info(struct f2fs_sb_info
*sbi
)
743 percpu_counter_destroy(&sbi
->alloc_valid_block_count
);
744 percpu_counter_destroy(&sbi
->total_valid_inode_count
);
747 static void destroy_device_list(struct f2fs_sb_info
*sbi
)
751 for (i
= 0; i
< sbi
->s_ndevs
; i
++) {
752 blkdev_put(FDEV(i
).bdev
, FMODE_EXCL
);
753 #ifdef CONFIG_BLK_DEV_ZONED
754 kfree(FDEV(i
).blkz_type
);
760 static void f2fs_put_super(struct super_block
*sb
)
762 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
765 remove_proc_entry("segment_info", sbi
->s_proc
);
766 remove_proc_entry("segment_bits", sbi
->s_proc
);
767 remove_proc_entry(sb
->s_id
, f2fs_proc_root
);
769 kobject_del(&sbi
->s_kobj
);
773 /* prevent remaining shrinker jobs */
774 mutex_lock(&sbi
->umount_mutex
);
777 * We don't need to do checkpoint when superblock is clean.
778 * But, the previous checkpoint was not done by umount, it needs to do
779 * clean checkpoint again.
781 if (is_sbi_flag_set(sbi
, SBI_IS_DIRTY
) ||
782 !is_set_ckpt_flags(sbi
, CP_UMOUNT_FLAG
)) {
783 struct cp_control cpc
= {
786 write_checkpoint(sbi
, &cpc
);
789 /* be sure to wait for any on-going discard commands */
790 f2fs_wait_discard_bio(sbi
, NULL_ADDR
);
792 /* write_checkpoint can update stat informaion */
793 f2fs_destroy_stats(sbi
);
796 * normally superblock is clean, so we need to release this.
797 * In addition, EIO will skip do checkpoint, we need this as well.
799 release_ino_entry(sbi
, true);
801 f2fs_leave_shrinker(sbi
);
802 mutex_unlock(&sbi
->umount_mutex
);
804 /* our cp_error case, we can wait for any writeback page */
805 f2fs_flush_merged_bios(sbi
);
807 iput(sbi
->node_inode
);
808 iput(sbi
->meta_inode
);
810 /* destroy f2fs internal modules */
811 destroy_node_manager(sbi
);
812 destroy_segment_manager(sbi
);
815 kobject_put(&sbi
->s_kobj
);
816 wait_for_completion(&sbi
->s_kobj_unregister
);
818 sb
->s_fs_info
= NULL
;
819 if (sbi
->s_chksum_driver
)
820 crypto_free_shash(sbi
->s_chksum_driver
);
821 kfree(sbi
->raw_super
);
823 destroy_device_list(sbi
);
824 mempool_destroy(sbi
->write_io_dummy
);
825 destroy_percpu_info(sbi
);
829 int f2fs_sync_fs(struct super_block
*sb
, int sync
)
831 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
834 trace_f2fs_sync_fs(sb
, sync
);
837 struct cp_control cpc
;
839 cpc
.reason
= __get_cp_reason(sbi
);
841 mutex_lock(&sbi
->gc_mutex
);
842 err
= write_checkpoint(sbi
, &cpc
);
843 mutex_unlock(&sbi
->gc_mutex
);
845 f2fs_trace_ios(NULL
, 1);
850 static int f2fs_freeze(struct super_block
*sb
)
852 if (f2fs_readonly(sb
))
855 /* IO error happened before */
856 if (unlikely(f2fs_cp_error(F2FS_SB(sb
))))
859 /* must be clean, since sync_filesystem() was already called */
860 if (is_sbi_flag_set(F2FS_SB(sb
), SBI_IS_DIRTY
))
865 static int f2fs_unfreeze(struct super_block
*sb
)
870 static int f2fs_statfs(struct dentry
*dentry
, struct kstatfs
*buf
)
872 struct super_block
*sb
= dentry
->d_sb
;
873 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
874 u64 id
= huge_encode_dev(sb
->s_bdev
->bd_dev
);
875 block_t total_count
, user_block_count
, start_count
, ovp_count
;
877 total_count
= le64_to_cpu(sbi
->raw_super
->block_count
);
878 user_block_count
= sbi
->user_block_count
;
879 start_count
= le32_to_cpu(sbi
->raw_super
->segment0_blkaddr
);
880 ovp_count
= SM_I(sbi
)->ovp_segments
<< sbi
->log_blocks_per_seg
;
881 buf
->f_type
= F2FS_SUPER_MAGIC
;
882 buf
->f_bsize
= sbi
->blocksize
;
884 buf
->f_blocks
= total_count
- start_count
;
885 buf
->f_bfree
= user_block_count
- valid_user_blocks(sbi
) + ovp_count
;
886 buf
->f_bavail
= user_block_count
- valid_user_blocks(sbi
);
888 buf
->f_files
= sbi
->total_node_count
- F2FS_RESERVED_NODE_NUM
;
889 buf
->f_ffree
= min(buf
->f_files
- valid_node_count(sbi
),
892 buf
->f_namelen
= F2FS_NAME_LEN
;
893 buf
->f_fsid
.val
[0] = (u32
)id
;
894 buf
->f_fsid
.val
[1] = (u32
)(id
>> 32);
899 static int f2fs_show_options(struct seq_file
*seq
, struct dentry
*root
)
901 struct f2fs_sb_info
*sbi
= F2FS_SB(root
->d_sb
);
903 if (!f2fs_readonly(sbi
->sb
) && test_opt(sbi
, BG_GC
)) {
904 if (test_opt(sbi
, FORCE_FG_GC
))
905 seq_printf(seq
, ",background_gc=%s", "sync");
907 seq_printf(seq
, ",background_gc=%s", "on");
909 seq_printf(seq
, ",background_gc=%s", "off");
911 if (test_opt(sbi
, DISABLE_ROLL_FORWARD
))
912 seq_puts(seq
, ",disable_roll_forward");
913 if (test_opt(sbi
, DISCARD
))
914 seq_puts(seq
, ",discard");
915 if (test_opt(sbi
, NOHEAP
))
916 seq_puts(seq
, ",no_heap_alloc");
917 #ifdef CONFIG_F2FS_FS_XATTR
918 if (test_opt(sbi
, XATTR_USER
))
919 seq_puts(seq
, ",user_xattr");
921 seq_puts(seq
, ",nouser_xattr");
922 if (test_opt(sbi
, INLINE_XATTR
))
923 seq_puts(seq
, ",inline_xattr");
925 seq_puts(seq
, ",noinline_xattr");
927 #ifdef CONFIG_F2FS_FS_POSIX_ACL
928 if (test_opt(sbi
, POSIX_ACL
))
929 seq_puts(seq
, ",acl");
931 seq_puts(seq
, ",noacl");
933 if (test_opt(sbi
, DISABLE_EXT_IDENTIFY
))
934 seq_puts(seq
, ",disable_ext_identify");
935 if (test_opt(sbi
, INLINE_DATA
))
936 seq_puts(seq
, ",inline_data");
938 seq_puts(seq
, ",noinline_data");
939 if (test_opt(sbi
, INLINE_DENTRY
))
940 seq_puts(seq
, ",inline_dentry");
942 seq_puts(seq
, ",noinline_dentry");
943 if (!f2fs_readonly(sbi
->sb
) && test_opt(sbi
, FLUSH_MERGE
))
944 seq_puts(seq
, ",flush_merge");
945 if (test_opt(sbi
, NOBARRIER
))
946 seq_puts(seq
, ",nobarrier");
947 if (test_opt(sbi
, FASTBOOT
))
948 seq_puts(seq
, ",fastboot");
949 if (test_opt(sbi
, EXTENT_CACHE
))
950 seq_puts(seq
, ",extent_cache");
952 seq_puts(seq
, ",noextent_cache");
953 if (test_opt(sbi
, DATA_FLUSH
))
954 seq_puts(seq
, ",data_flush");
956 seq_puts(seq
, ",mode=");
957 if (test_opt(sbi
, ADAPTIVE
))
958 seq_puts(seq
, "adaptive");
959 else if (test_opt(sbi
, LFS
))
960 seq_puts(seq
, "lfs");
961 seq_printf(seq
, ",active_logs=%u", sbi
->active_logs
);
962 if (F2FS_IO_SIZE_BITS(sbi
))
963 seq_printf(seq
, ",io_size=%uKB", F2FS_IO_SIZE_KB(sbi
));
964 #ifdef CONFIG_F2FS_FAULT_INJECTION
965 if (test_opt(sbi
, FAULT_INJECTION
))
966 seq_puts(seq
, ",fault_injection");
972 static int segment_info_seq_show(struct seq_file
*seq
, void *offset
)
974 struct super_block
*sb
= seq
->private;
975 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
976 unsigned int total_segs
=
977 le32_to_cpu(sbi
->raw_super
->segment_count_main
);
980 seq_puts(seq
, "format: segment_type|valid_blocks\n"
981 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
983 for (i
= 0; i
< total_segs
; i
++) {
984 struct seg_entry
*se
= get_seg_entry(sbi
, i
);
987 seq_printf(seq
, "%-10d", i
);
988 seq_printf(seq
, "%d|%-3u", se
->type
,
989 get_valid_blocks(sbi
, i
, 1));
990 if ((i
% 10) == 9 || i
== (total_segs
- 1))
999 static int segment_bits_seq_show(struct seq_file
*seq
, void *offset
)
1001 struct super_block
*sb
= seq
->private;
1002 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1003 unsigned int total_segs
=
1004 le32_to_cpu(sbi
->raw_super
->segment_count_main
);
1007 seq_puts(seq
, "format: segment_type|valid_blocks|bitmaps\n"
1008 "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n");
1010 for (i
= 0; i
< total_segs
; i
++) {
1011 struct seg_entry
*se
= get_seg_entry(sbi
, i
);
1013 seq_printf(seq
, "%-10d", i
);
1014 seq_printf(seq
, "%d|%-3u|", se
->type
,
1015 get_valid_blocks(sbi
, i
, 1));
1016 for (j
= 0; j
< SIT_VBLOCK_MAP_SIZE
; j
++)
1017 seq_printf(seq
, " %.2x", se
->cur_valid_map
[j
]);
1018 seq_putc(seq
, '\n');
1023 #define F2FS_PROC_FILE_DEF(_name) \
1024 static int _name##_open_fs(struct inode *inode, struct file *file) \
1026 return single_open(file, _name##_seq_show, PDE_DATA(inode)); \
1029 static const struct file_operations f2fs_seq_##_name##_fops = { \
1030 .open = _name##_open_fs, \
1032 .llseek = seq_lseek, \
1033 .release = single_release, \
1036 F2FS_PROC_FILE_DEF(segment_info
);
1037 F2FS_PROC_FILE_DEF(segment_bits
);
1039 static void default_options(struct f2fs_sb_info
*sbi
)
1041 /* init some FS parameters */
1042 sbi
->active_logs
= NR_CURSEG_TYPE
;
1044 set_opt(sbi
, BG_GC
);
1045 set_opt(sbi
, INLINE_XATTR
);
1046 set_opt(sbi
, INLINE_DATA
);
1047 set_opt(sbi
, INLINE_DENTRY
);
1048 set_opt(sbi
, EXTENT_CACHE
);
1049 sbi
->sb
->s_flags
|= MS_LAZYTIME
;
1050 set_opt(sbi
, FLUSH_MERGE
);
1051 if (f2fs_sb_mounted_blkzoned(sbi
->sb
)) {
1052 set_opt_mode(sbi
, F2FS_MOUNT_LFS
);
1053 set_opt(sbi
, DISCARD
);
1055 set_opt_mode(sbi
, F2FS_MOUNT_ADAPTIVE
);
1058 #ifdef CONFIG_F2FS_FS_XATTR
1059 set_opt(sbi
, XATTR_USER
);
1061 #ifdef CONFIG_F2FS_FS_POSIX_ACL
1062 set_opt(sbi
, POSIX_ACL
);
1065 #ifdef CONFIG_F2FS_FAULT_INJECTION
1066 f2fs_build_fault_attr(sbi
, 0);
1070 static int f2fs_remount(struct super_block
*sb
, int *flags
, char *data
)
1072 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1073 struct f2fs_mount_info org_mount_opt
;
1074 int err
, active_logs
;
1075 bool need_restart_gc
= false;
1076 bool need_stop_gc
= false;
1077 bool no_extent_cache
= !test_opt(sbi
, EXTENT_CACHE
);
1078 #ifdef CONFIG_F2FS_FAULT_INJECTION
1079 struct f2fs_fault_info ffi
= sbi
->fault_info
;
1083 * Save the old mount options in case we
1084 * need to restore them.
1086 org_mount_opt
= sbi
->mount_opt
;
1087 active_logs
= sbi
->active_logs
;
1089 /* recover superblocks we couldn't write due to previous RO mount */
1090 if (!(*flags
& MS_RDONLY
) && is_sbi_flag_set(sbi
, SBI_NEED_SB_WRITE
)) {
1091 err
= f2fs_commit_super(sbi
, false);
1092 f2fs_msg(sb
, KERN_INFO
,
1093 "Try to recover all the superblocks, ret: %d", err
);
1095 clear_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
1098 sbi
->mount_opt
.opt
= 0;
1099 default_options(sbi
);
1101 /* parse mount options */
1102 err
= parse_options(sb
, data
);
1107 * Previous and new state of filesystem is RO,
1108 * so skip checking GC and FLUSH_MERGE conditions.
1110 if (f2fs_readonly(sb
) && (*flags
& MS_RDONLY
))
1113 /* disallow enable/disable extent_cache dynamically */
1114 if (no_extent_cache
== !!test_opt(sbi
, EXTENT_CACHE
)) {
1116 f2fs_msg(sbi
->sb
, KERN_WARNING
,
1117 "switch extent_cache option is not allowed");
1122 * We stop the GC thread if FS is mounted as RO
1123 * or if background_gc = off is passed in mount
1124 * option. Also sync the filesystem.
1126 if ((*flags
& MS_RDONLY
) || !test_opt(sbi
, BG_GC
)) {
1127 if (sbi
->gc_thread
) {
1128 stop_gc_thread(sbi
);
1129 need_restart_gc
= true;
1131 } else if (!sbi
->gc_thread
) {
1132 err
= start_gc_thread(sbi
);
1135 need_stop_gc
= true;
1138 if (*flags
& MS_RDONLY
) {
1139 writeback_inodes_sb(sb
, WB_REASON_SYNC
);
1142 set_sbi_flag(sbi
, SBI_IS_DIRTY
);
1143 set_sbi_flag(sbi
, SBI_IS_CLOSE
);
1144 f2fs_sync_fs(sb
, 1);
1145 clear_sbi_flag(sbi
, SBI_IS_CLOSE
);
1149 * We stop issue flush thread if FS is mounted as RO
1150 * or if flush_merge is not passed in mount option.
1152 if ((*flags
& MS_RDONLY
) || !test_opt(sbi
, FLUSH_MERGE
)) {
1153 clear_opt(sbi
, FLUSH_MERGE
);
1154 destroy_flush_cmd_control(sbi
, false);
1156 err
= create_flush_cmd_control(sbi
);
1161 /* Update the POSIXACL Flag */
1162 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
1163 (test_opt(sbi
, POSIX_ACL
) ? MS_POSIXACL
: 0);
1167 if (need_restart_gc
) {
1168 if (start_gc_thread(sbi
))
1169 f2fs_msg(sbi
->sb
, KERN_WARNING
,
1170 "background gc thread has stopped");
1171 } else if (need_stop_gc
) {
1172 stop_gc_thread(sbi
);
1175 sbi
->mount_opt
= org_mount_opt
;
1176 sbi
->active_logs
= active_logs
;
1177 #ifdef CONFIG_F2FS_FAULT_INJECTION
1178 sbi
->fault_info
= ffi
;
1183 static struct super_operations f2fs_sops
= {
1184 .alloc_inode
= f2fs_alloc_inode
,
1185 .drop_inode
= f2fs_drop_inode
,
1186 .destroy_inode
= f2fs_destroy_inode
,
1187 .write_inode
= f2fs_write_inode
,
1188 .dirty_inode
= f2fs_dirty_inode
,
1189 .show_options
= f2fs_show_options
,
1190 .evict_inode
= f2fs_evict_inode
,
1191 .put_super
= f2fs_put_super
,
1192 .sync_fs
= f2fs_sync_fs
,
1193 .freeze_fs
= f2fs_freeze
,
1194 .unfreeze_fs
= f2fs_unfreeze
,
1195 .statfs
= f2fs_statfs
,
1196 .remount_fs
= f2fs_remount
,
1199 #ifdef CONFIG_F2FS_FS_ENCRYPTION
1200 static int f2fs_get_context(struct inode
*inode
, void *ctx
, size_t len
)
1202 return f2fs_getxattr(inode
, F2FS_XATTR_INDEX_ENCRYPTION
,
1203 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT
,
1207 static int f2fs_set_context(struct inode
*inode
, const void *ctx
, size_t len
,
1210 return f2fs_setxattr(inode
, F2FS_XATTR_INDEX_ENCRYPTION
,
1211 F2FS_XATTR_NAME_ENCRYPTION_CONTEXT
,
1212 ctx
, len
, fs_data
, XATTR_CREATE
);
1215 static unsigned f2fs_max_namelen(struct inode
*inode
)
1217 return S_ISLNK(inode
->i_mode
) ?
1218 inode
->i_sb
->s_blocksize
: F2FS_NAME_LEN
;
1221 static const struct fscrypt_operations f2fs_cryptops
= {
1222 .key_prefix
= "f2fs:",
1223 .get_context
= f2fs_get_context
,
1224 .set_context
= f2fs_set_context
,
1225 .is_encrypted
= f2fs_encrypted_inode
,
1226 .empty_dir
= f2fs_empty_dir
,
1227 .max_namelen
= f2fs_max_namelen
,
1230 static const struct fscrypt_operations f2fs_cryptops
= {
1231 .is_encrypted
= f2fs_encrypted_inode
,
1235 static struct inode
*f2fs_nfs_get_inode(struct super_block
*sb
,
1236 u64 ino
, u32 generation
)
1238 struct f2fs_sb_info
*sbi
= F2FS_SB(sb
);
1239 struct inode
*inode
;
1241 if (check_nid_range(sbi
, ino
))
1242 return ERR_PTR(-ESTALE
);
1245 * f2fs_iget isn't quite right if the inode is currently unallocated!
1246 * However f2fs_iget currently does appropriate checks to handle stale
1247 * inodes so everything is OK.
1249 inode
= f2fs_iget(sb
, ino
);
1251 return ERR_CAST(inode
);
1252 if (unlikely(generation
&& inode
->i_generation
!= generation
)) {
1253 /* we didn't find the right inode.. */
1255 return ERR_PTR(-ESTALE
);
1260 static struct dentry
*f2fs_fh_to_dentry(struct super_block
*sb
, struct fid
*fid
,
1261 int fh_len
, int fh_type
)
1263 return generic_fh_to_dentry(sb
, fid
, fh_len
, fh_type
,
1264 f2fs_nfs_get_inode
);
1267 static struct dentry
*f2fs_fh_to_parent(struct super_block
*sb
, struct fid
*fid
,
1268 int fh_len
, int fh_type
)
1270 return generic_fh_to_parent(sb
, fid
, fh_len
, fh_type
,
1271 f2fs_nfs_get_inode
);
1274 static const struct export_operations f2fs_export_ops
= {
1275 .fh_to_dentry
= f2fs_fh_to_dentry
,
1276 .fh_to_parent
= f2fs_fh_to_parent
,
1277 .get_parent
= f2fs_get_parent
,
1280 static loff_t
max_file_blocks(void)
1282 loff_t result
= (DEF_ADDRS_PER_INODE
- F2FS_INLINE_XATTR_ADDRS
);
1283 loff_t leaf_count
= ADDRS_PER_BLOCK
;
1285 /* two direct node blocks */
1286 result
+= (leaf_count
* 2);
1288 /* two indirect node blocks */
1289 leaf_count
*= NIDS_PER_BLOCK
;
1290 result
+= (leaf_count
* 2);
1292 /* one double indirect node block */
1293 leaf_count
*= NIDS_PER_BLOCK
;
1294 result
+= leaf_count
;
1299 static int __f2fs_commit_super(struct buffer_head
*bh
,
1300 struct f2fs_super_block
*super
)
1304 memcpy(bh
->b_data
+ F2FS_SUPER_OFFSET
, super
, sizeof(*super
));
1305 set_buffer_uptodate(bh
);
1306 set_buffer_dirty(bh
);
1309 /* it's rare case, we can do fua all the time */
1310 return __sync_dirty_buffer(bh
, REQ_PREFLUSH
| REQ_FUA
);
1313 static inline bool sanity_check_area_boundary(struct f2fs_sb_info
*sbi
,
1314 struct buffer_head
*bh
)
1316 struct f2fs_super_block
*raw_super
= (struct f2fs_super_block
*)
1317 (bh
->b_data
+ F2FS_SUPER_OFFSET
);
1318 struct super_block
*sb
= sbi
->sb
;
1319 u32 segment0_blkaddr
= le32_to_cpu(raw_super
->segment0_blkaddr
);
1320 u32 cp_blkaddr
= le32_to_cpu(raw_super
->cp_blkaddr
);
1321 u32 sit_blkaddr
= le32_to_cpu(raw_super
->sit_blkaddr
);
1322 u32 nat_blkaddr
= le32_to_cpu(raw_super
->nat_blkaddr
);
1323 u32 ssa_blkaddr
= le32_to_cpu(raw_super
->ssa_blkaddr
);
1324 u32 main_blkaddr
= le32_to_cpu(raw_super
->main_blkaddr
);
1325 u32 segment_count_ckpt
= le32_to_cpu(raw_super
->segment_count_ckpt
);
1326 u32 segment_count_sit
= le32_to_cpu(raw_super
->segment_count_sit
);
1327 u32 segment_count_nat
= le32_to_cpu(raw_super
->segment_count_nat
);
1328 u32 segment_count_ssa
= le32_to_cpu(raw_super
->segment_count_ssa
);
1329 u32 segment_count_main
= le32_to_cpu(raw_super
->segment_count_main
);
1330 u32 segment_count
= le32_to_cpu(raw_super
->segment_count
);
1331 u32 log_blocks_per_seg
= le32_to_cpu(raw_super
->log_blocks_per_seg
);
1332 u64 main_end_blkaddr
= main_blkaddr
+
1333 (segment_count_main
<< log_blocks_per_seg
);
1334 u64 seg_end_blkaddr
= segment0_blkaddr
+
1335 (segment_count
<< log_blocks_per_seg
);
1337 if (segment0_blkaddr
!= cp_blkaddr
) {
1338 f2fs_msg(sb
, KERN_INFO
,
1339 "Mismatch start address, segment0(%u) cp_blkaddr(%u)",
1340 segment0_blkaddr
, cp_blkaddr
);
1344 if (cp_blkaddr
+ (segment_count_ckpt
<< log_blocks_per_seg
) !=
1346 f2fs_msg(sb
, KERN_INFO
,
1347 "Wrong CP boundary, start(%u) end(%u) blocks(%u)",
1348 cp_blkaddr
, sit_blkaddr
,
1349 segment_count_ckpt
<< log_blocks_per_seg
);
1353 if (sit_blkaddr
+ (segment_count_sit
<< log_blocks_per_seg
) !=
1355 f2fs_msg(sb
, KERN_INFO
,
1356 "Wrong SIT boundary, start(%u) end(%u) blocks(%u)",
1357 sit_blkaddr
, nat_blkaddr
,
1358 segment_count_sit
<< log_blocks_per_seg
);
1362 if (nat_blkaddr
+ (segment_count_nat
<< log_blocks_per_seg
) !=
1364 f2fs_msg(sb
, KERN_INFO
,
1365 "Wrong NAT boundary, start(%u) end(%u) blocks(%u)",
1366 nat_blkaddr
, ssa_blkaddr
,
1367 segment_count_nat
<< log_blocks_per_seg
);
1371 if (ssa_blkaddr
+ (segment_count_ssa
<< log_blocks_per_seg
) !=
1373 f2fs_msg(sb
, KERN_INFO
,
1374 "Wrong SSA boundary, start(%u) end(%u) blocks(%u)",
1375 ssa_blkaddr
, main_blkaddr
,
1376 segment_count_ssa
<< log_blocks_per_seg
);
1380 if (main_end_blkaddr
> seg_end_blkaddr
) {
1381 f2fs_msg(sb
, KERN_INFO
,
1382 "Wrong MAIN_AREA boundary, start(%u) end(%u) block(%u)",
1385 (segment_count
<< log_blocks_per_seg
),
1386 segment_count_main
<< log_blocks_per_seg
);
1388 } else if (main_end_blkaddr
< seg_end_blkaddr
) {
1392 /* fix in-memory information all the time */
1393 raw_super
->segment_count
= cpu_to_le32((main_end_blkaddr
-
1394 segment0_blkaddr
) >> log_blocks_per_seg
);
1396 if (f2fs_readonly(sb
) || bdev_read_only(sb
->s_bdev
)) {
1397 set_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
1400 err
= __f2fs_commit_super(bh
, NULL
);
1401 res
= err
? "failed" : "done";
1403 f2fs_msg(sb
, KERN_INFO
,
1404 "Fix alignment : %s, start(%u) end(%u) block(%u)",
1407 (segment_count
<< log_blocks_per_seg
),
1408 segment_count_main
<< log_blocks_per_seg
);
1415 static int sanity_check_raw_super(struct f2fs_sb_info
*sbi
,
1416 struct buffer_head
*bh
)
1418 struct f2fs_super_block
*raw_super
= (struct f2fs_super_block
*)
1419 (bh
->b_data
+ F2FS_SUPER_OFFSET
);
1420 struct super_block
*sb
= sbi
->sb
;
1421 unsigned int blocksize
;
1423 if (F2FS_SUPER_MAGIC
!= le32_to_cpu(raw_super
->magic
)) {
1424 f2fs_msg(sb
, KERN_INFO
,
1425 "Magic Mismatch, valid(0x%x) - read(0x%x)",
1426 F2FS_SUPER_MAGIC
, le32_to_cpu(raw_super
->magic
));
1430 /* Currently, support only 4KB page cache size */
1431 if (F2FS_BLKSIZE
!= PAGE_SIZE
) {
1432 f2fs_msg(sb
, KERN_INFO
,
1433 "Invalid page_cache_size (%lu), supports only 4KB\n",
1438 /* Currently, support only 4KB block size */
1439 blocksize
= 1 << le32_to_cpu(raw_super
->log_blocksize
);
1440 if (blocksize
!= F2FS_BLKSIZE
) {
1441 f2fs_msg(sb
, KERN_INFO
,
1442 "Invalid blocksize (%u), supports only 4KB\n",
1447 /* check log blocks per segment */
1448 if (le32_to_cpu(raw_super
->log_blocks_per_seg
) != 9) {
1449 f2fs_msg(sb
, KERN_INFO
,
1450 "Invalid log blocks per segment (%u)\n",
1451 le32_to_cpu(raw_super
->log_blocks_per_seg
));
1455 /* Currently, support 512/1024/2048/4096 bytes sector size */
1456 if (le32_to_cpu(raw_super
->log_sectorsize
) >
1457 F2FS_MAX_LOG_SECTOR_SIZE
||
1458 le32_to_cpu(raw_super
->log_sectorsize
) <
1459 F2FS_MIN_LOG_SECTOR_SIZE
) {
1460 f2fs_msg(sb
, KERN_INFO
, "Invalid log sectorsize (%u)",
1461 le32_to_cpu(raw_super
->log_sectorsize
));
1464 if (le32_to_cpu(raw_super
->log_sectors_per_block
) +
1465 le32_to_cpu(raw_super
->log_sectorsize
) !=
1466 F2FS_MAX_LOG_SECTOR_SIZE
) {
1467 f2fs_msg(sb
, KERN_INFO
,
1468 "Invalid log sectors per block(%u) log sectorsize(%u)",
1469 le32_to_cpu(raw_super
->log_sectors_per_block
),
1470 le32_to_cpu(raw_super
->log_sectorsize
));
1474 /* check reserved ino info */
1475 if (le32_to_cpu(raw_super
->node_ino
) != 1 ||
1476 le32_to_cpu(raw_super
->meta_ino
) != 2 ||
1477 le32_to_cpu(raw_super
->root_ino
) != 3) {
1478 f2fs_msg(sb
, KERN_INFO
,
1479 "Invalid Fs Meta Ino: node(%u) meta(%u) root(%u)",
1480 le32_to_cpu(raw_super
->node_ino
),
1481 le32_to_cpu(raw_super
->meta_ino
),
1482 le32_to_cpu(raw_super
->root_ino
));
1486 /* check CP/SIT/NAT/SSA/MAIN_AREA area boundary */
1487 if (sanity_check_area_boundary(sbi
, bh
))
1493 int sanity_check_ckpt(struct f2fs_sb_info
*sbi
)
1495 unsigned int total
, fsmeta
;
1496 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
1497 struct f2fs_checkpoint
*ckpt
= F2FS_CKPT(sbi
);
1498 unsigned int ovp_segments
, reserved_segments
;
1500 total
= le32_to_cpu(raw_super
->segment_count
);
1501 fsmeta
= le32_to_cpu(raw_super
->segment_count_ckpt
);
1502 fsmeta
+= le32_to_cpu(raw_super
->segment_count_sit
);
1503 fsmeta
+= le32_to_cpu(raw_super
->segment_count_nat
);
1504 fsmeta
+= le32_to_cpu(ckpt
->rsvd_segment_count
);
1505 fsmeta
+= le32_to_cpu(raw_super
->segment_count_ssa
);
1507 if (unlikely(fsmeta
>= total
))
1510 ovp_segments
= le32_to_cpu(ckpt
->overprov_segment_count
);
1511 reserved_segments
= le32_to_cpu(ckpt
->rsvd_segment_count
);
1513 if (unlikely(fsmeta
< F2FS_MIN_SEGMENTS
||
1514 ovp_segments
== 0 || reserved_segments
== 0)) {
1515 f2fs_msg(sbi
->sb
, KERN_ERR
,
1516 "Wrong layout: check mkfs.f2fs version");
1520 if (unlikely(f2fs_cp_error(sbi
))) {
1521 f2fs_msg(sbi
->sb
, KERN_ERR
, "A bug case: need to run fsck");
1527 static void init_sb_info(struct f2fs_sb_info
*sbi
)
1529 struct f2fs_super_block
*raw_super
= sbi
->raw_super
;
1532 sbi
->log_sectors_per_block
=
1533 le32_to_cpu(raw_super
->log_sectors_per_block
);
1534 sbi
->log_blocksize
= le32_to_cpu(raw_super
->log_blocksize
);
1535 sbi
->blocksize
= 1 << sbi
->log_blocksize
;
1536 sbi
->log_blocks_per_seg
= le32_to_cpu(raw_super
->log_blocks_per_seg
);
1537 sbi
->blocks_per_seg
= 1 << sbi
->log_blocks_per_seg
;
1538 sbi
->segs_per_sec
= le32_to_cpu(raw_super
->segs_per_sec
);
1539 sbi
->secs_per_zone
= le32_to_cpu(raw_super
->secs_per_zone
);
1540 sbi
->total_sections
= le32_to_cpu(raw_super
->section_count
);
1541 sbi
->total_node_count
=
1542 (le32_to_cpu(raw_super
->segment_count_nat
) / 2)
1543 * sbi
->blocks_per_seg
* NAT_ENTRY_PER_BLOCK
;
1544 sbi
->root_ino_num
= le32_to_cpu(raw_super
->root_ino
);
1545 sbi
->node_ino_num
= le32_to_cpu(raw_super
->node_ino
);
1546 sbi
->meta_ino_num
= le32_to_cpu(raw_super
->meta_ino
);
1547 sbi
->cur_victim_sec
= NULL_SECNO
;
1548 sbi
->max_victim_search
= DEF_MAX_VICTIM_SEARCH
;
1550 sbi
->dir_level
= DEF_DIR_LEVEL
;
1551 sbi
->interval_time
[CP_TIME
] = DEF_CP_INTERVAL
;
1552 sbi
->interval_time
[REQ_TIME
] = DEF_IDLE_INTERVAL
;
1553 clear_sbi_flag(sbi
, SBI_NEED_FSCK
);
1555 for (i
= 0; i
< NR_COUNT_TYPE
; i
++)
1556 atomic_set(&sbi
->nr_pages
[i
], 0);
1558 INIT_LIST_HEAD(&sbi
->s_list
);
1559 mutex_init(&sbi
->umount_mutex
);
1560 mutex_init(&sbi
->wio_mutex
[NODE
]);
1561 mutex_init(&sbi
->wio_mutex
[DATA
]);
1562 spin_lock_init(&sbi
->cp_lock
);
1565 static int init_percpu_info(struct f2fs_sb_info
*sbi
)
1569 err
= percpu_counter_init(&sbi
->alloc_valid_block_count
, 0, GFP_KERNEL
);
1573 return percpu_counter_init(&sbi
->total_valid_inode_count
, 0,
1577 #ifdef CONFIG_BLK_DEV_ZONED
1578 static int init_blkz_info(struct f2fs_sb_info
*sbi
, int devi
)
1580 struct block_device
*bdev
= FDEV(devi
).bdev
;
1581 sector_t nr_sectors
= bdev
->bd_part
->nr_sects
;
1582 sector_t sector
= 0;
1583 struct blk_zone
*zones
;
1584 unsigned int i
, nr_zones
;
1588 if (!f2fs_sb_mounted_blkzoned(sbi
->sb
))
1591 if (sbi
->blocks_per_blkz
&& sbi
->blocks_per_blkz
!=
1592 SECTOR_TO_BLOCK(bdev_zone_sectors(bdev
)))
1594 sbi
->blocks_per_blkz
= SECTOR_TO_BLOCK(bdev_zone_sectors(bdev
));
1595 if (sbi
->log_blocks_per_blkz
&& sbi
->log_blocks_per_blkz
!=
1596 __ilog2_u32(sbi
->blocks_per_blkz
))
1598 sbi
->log_blocks_per_blkz
= __ilog2_u32(sbi
->blocks_per_blkz
);
1599 FDEV(devi
).nr_blkz
= SECTOR_TO_BLOCK(nr_sectors
) >>
1600 sbi
->log_blocks_per_blkz
;
1601 if (nr_sectors
& (bdev_zone_sectors(bdev
) - 1))
1602 FDEV(devi
).nr_blkz
++;
1604 FDEV(devi
).blkz_type
= kmalloc(FDEV(devi
).nr_blkz
, GFP_KERNEL
);
1605 if (!FDEV(devi
).blkz_type
)
1608 #define F2FS_REPORT_NR_ZONES 4096
1610 zones
= kcalloc(F2FS_REPORT_NR_ZONES
, sizeof(struct blk_zone
),
1615 /* Get block zones type */
1616 while (zones
&& sector
< nr_sectors
) {
1618 nr_zones
= F2FS_REPORT_NR_ZONES
;
1619 err
= blkdev_report_zones(bdev
, sector
,
1629 for (i
= 0; i
< nr_zones
; i
++) {
1630 FDEV(devi
).blkz_type
[n
] = zones
[i
].type
;
1631 sector
+= zones
[i
].len
;
1643 * Read f2fs raw super block.
1644 * Because we have two copies of super block, so read both of them
1645 * to get the first valid one. If any one of them is broken, we pass
1646 * them recovery flag back to the caller.
1648 static int read_raw_super_block(struct f2fs_sb_info
*sbi
,
1649 struct f2fs_super_block
**raw_super
,
1650 int *valid_super_block
, int *recovery
)
1652 struct super_block
*sb
= sbi
->sb
;
1654 struct buffer_head
*bh
;
1655 struct f2fs_super_block
*super
;
1658 super
= kzalloc(sizeof(struct f2fs_super_block
), GFP_KERNEL
);
1662 for (block
= 0; block
< 2; block
++) {
1663 bh
= sb_bread(sb
, block
);
1665 f2fs_msg(sb
, KERN_ERR
, "Unable to read %dth superblock",
1671 /* sanity checking of raw super */
1672 if (sanity_check_raw_super(sbi
, bh
)) {
1673 f2fs_msg(sb
, KERN_ERR
,
1674 "Can't find valid F2FS filesystem in %dth superblock",
1682 memcpy(super
, bh
->b_data
+ F2FS_SUPER_OFFSET
,
1684 *valid_super_block
= block
;
1690 /* Fail to read any one of the superblocks*/
1694 /* No valid superblock */
1703 int f2fs_commit_super(struct f2fs_sb_info
*sbi
, bool recover
)
1705 struct buffer_head
*bh
;
1708 if ((recover
&& f2fs_readonly(sbi
->sb
)) ||
1709 bdev_read_only(sbi
->sb
->s_bdev
)) {
1710 set_sbi_flag(sbi
, SBI_NEED_SB_WRITE
);
1714 /* write back-up superblock first */
1715 bh
= sb_getblk(sbi
->sb
, sbi
->valid_super_block
? 0: 1);
1718 err
= __f2fs_commit_super(bh
, F2FS_RAW_SUPER(sbi
));
1721 /* if we are in recovery path, skip writing valid superblock */
1725 /* write current valid superblock */
1726 bh
= sb_getblk(sbi
->sb
, sbi
->valid_super_block
);
1729 err
= __f2fs_commit_super(bh
, F2FS_RAW_SUPER(sbi
));
1734 static int f2fs_scan_devices(struct f2fs_sb_info
*sbi
)
1736 struct f2fs_super_block
*raw_super
= F2FS_RAW_SUPER(sbi
);
1737 unsigned int max_devices
= MAX_DEVICES
;
1740 /* Initialize single device information */
1741 if (!RDEV(0).path
[0]) {
1742 if (!bdev_is_zoned(sbi
->sb
->s_bdev
))
1748 * Initialize multiple devices information, or single
1749 * zoned block device information.
1751 sbi
->devs
= kcalloc(max_devices
, sizeof(struct f2fs_dev_info
),
1756 for (i
= 0; i
< max_devices
; i
++) {
1758 if (i
> 0 && !RDEV(i
).path
[0])
1761 if (max_devices
== 1) {
1762 /* Single zoned block device mount */
1764 blkdev_get_by_dev(sbi
->sb
->s_bdev
->bd_dev
,
1765 sbi
->sb
->s_mode
, sbi
->sb
->s_type
);
1767 /* Multi-device mount */
1768 memcpy(FDEV(i
).path
, RDEV(i
).path
, MAX_PATH_LEN
);
1769 FDEV(i
).total_segments
=
1770 le32_to_cpu(RDEV(i
).total_segments
);
1772 FDEV(i
).start_blk
= 0;
1773 FDEV(i
).end_blk
= FDEV(i
).start_blk
+
1774 (FDEV(i
).total_segments
<<
1775 sbi
->log_blocks_per_seg
) - 1 +
1776 le32_to_cpu(raw_super
->segment0_blkaddr
);
1778 FDEV(i
).start_blk
= FDEV(i
- 1).end_blk
+ 1;
1779 FDEV(i
).end_blk
= FDEV(i
).start_blk
+
1780 (FDEV(i
).total_segments
<<
1781 sbi
->log_blocks_per_seg
) - 1;
1783 FDEV(i
).bdev
= blkdev_get_by_path(FDEV(i
).path
,
1784 sbi
->sb
->s_mode
, sbi
->sb
->s_type
);
1786 if (IS_ERR(FDEV(i
).bdev
))
1787 return PTR_ERR(FDEV(i
).bdev
);
1789 /* to release errored devices */
1790 sbi
->s_ndevs
= i
+ 1;
1792 #ifdef CONFIG_BLK_DEV_ZONED
1793 if (bdev_zoned_model(FDEV(i
).bdev
) == BLK_ZONED_HM
&&
1794 !f2fs_sb_mounted_blkzoned(sbi
->sb
)) {
1795 f2fs_msg(sbi
->sb
, KERN_ERR
,
1796 "Zoned block device feature not enabled\n");
1799 if (bdev_zoned_model(FDEV(i
).bdev
) != BLK_ZONED_NONE
) {
1800 if (init_blkz_info(sbi
, i
)) {
1801 f2fs_msg(sbi
->sb
, KERN_ERR
,
1802 "Failed to initialize F2FS blkzone information");
1805 if (max_devices
== 1)
1807 f2fs_msg(sbi
->sb
, KERN_INFO
,
1808 "Mount Device [%2d]: %20s, %8u, %8x - %8x (zone: %s)",
1810 FDEV(i
).total_segments
,
1811 FDEV(i
).start_blk
, FDEV(i
).end_blk
,
1812 bdev_zoned_model(FDEV(i
).bdev
) == BLK_ZONED_HA
?
1813 "Host-aware" : "Host-managed");
1817 f2fs_msg(sbi
->sb
, KERN_INFO
,
1818 "Mount Device [%2d]: %20s, %8u, %8x - %8x",
1820 FDEV(i
).total_segments
,
1821 FDEV(i
).start_blk
, FDEV(i
).end_blk
);
1823 f2fs_msg(sbi
->sb
, KERN_INFO
,
1824 "IO Block Size: %8d KB", F2FS_IO_SIZE_KB(sbi
));
1828 static int f2fs_fill_super(struct super_block
*sb
, void *data
, int silent
)
1830 struct f2fs_sb_info
*sbi
;
1831 struct f2fs_super_block
*raw_super
;
1834 bool retry
= true, need_fsck
= false;
1835 char *options
= NULL
;
1836 int recovery
, i
, valid_super_block
;
1837 struct curseg_info
*seg_i
;
1842 valid_super_block
= -1;
1845 /* allocate memory for f2fs-specific super block info */
1846 sbi
= kzalloc(sizeof(struct f2fs_sb_info
), GFP_KERNEL
);
1852 /* Load the checksum driver */
1853 sbi
->s_chksum_driver
= crypto_alloc_shash("crc32", 0, 0);
1854 if (IS_ERR(sbi
->s_chksum_driver
)) {
1855 f2fs_msg(sb
, KERN_ERR
, "Cannot load crc32 driver.");
1856 err
= PTR_ERR(sbi
->s_chksum_driver
);
1857 sbi
->s_chksum_driver
= NULL
;
1861 /* set a block size */
1862 if (unlikely(!sb_set_blocksize(sb
, F2FS_BLKSIZE
))) {
1863 f2fs_msg(sb
, KERN_ERR
, "unable to set blocksize");
1867 err
= read_raw_super_block(sbi
, &raw_super
, &valid_super_block
,
1872 sb
->s_fs_info
= sbi
;
1873 sbi
->raw_super
= raw_super
;
1876 * The BLKZONED feature indicates that the drive was formatted with
1877 * zone alignment optimization. This is optional for host-aware
1878 * devices, but mandatory for host-managed zoned block devices.
1880 #ifndef CONFIG_BLK_DEV_ZONED
1881 if (f2fs_sb_mounted_blkzoned(sb
)) {
1882 f2fs_msg(sb
, KERN_ERR
,
1883 "Zoned block device support is not enabled\n");
1887 default_options(sbi
);
1888 /* parse mount options */
1889 options
= kstrdup((const char *)data
, GFP_KERNEL
);
1890 if (data
&& !options
) {
1895 err
= parse_options(sb
, options
);
1899 sbi
->max_file_blocks
= max_file_blocks();
1900 sb
->s_maxbytes
= sbi
->max_file_blocks
<<
1901 le32_to_cpu(raw_super
->log_blocksize
);
1902 sb
->s_max_links
= F2FS_LINK_MAX
;
1903 get_random_bytes(&sbi
->s_next_generation
, sizeof(u32
));
1905 sb
->s_op
= &f2fs_sops
;
1906 sb
->s_cop
= &f2fs_cryptops
;
1907 sb
->s_xattr
= f2fs_xattr_handlers
;
1908 sb
->s_export_op
= &f2fs_export_ops
;
1909 sb
->s_magic
= F2FS_SUPER_MAGIC
;
1910 sb
->s_time_gran
= 1;
1911 sb
->s_flags
= (sb
->s_flags
& ~MS_POSIXACL
) |
1912 (test_opt(sbi
, POSIX_ACL
) ? MS_POSIXACL
: 0);
1913 memcpy(sb
->s_uuid
, raw_super
->uuid
, sizeof(raw_super
->uuid
));
1915 /* init f2fs-specific super block info */
1916 sbi
->valid_super_block
= valid_super_block
;
1917 mutex_init(&sbi
->gc_mutex
);
1918 mutex_init(&sbi
->cp_mutex
);
1919 init_rwsem(&sbi
->node_write
);
1921 /* disallow all the data/node/meta page writes */
1922 set_sbi_flag(sbi
, SBI_POR_DOING
);
1923 spin_lock_init(&sbi
->stat_lock
);
1925 init_rwsem(&sbi
->read_io
.io_rwsem
);
1926 sbi
->read_io
.sbi
= sbi
;
1927 sbi
->read_io
.bio
= NULL
;
1928 for (i
= 0; i
< NR_PAGE_TYPE
; i
++) {
1929 init_rwsem(&sbi
->write_io
[i
].io_rwsem
);
1930 sbi
->write_io
[i
].sbi
= sbi
;
1931 sbi
->write_io
[i
].bio
= NULL
;
1934 init_rwsem(&sbi
->cp_rwsem
);
1935 init_waitqueue_head(&sbi
->cp_wait
);
1938 err
= init_percpu_info(sbi
);
1942 if (F2FS_IO_SIZE(sbi
) > 1) {
1943 sbi
->write_io_dummy
=
1944 mempool_create_page_pool(2 * (F2FS_IO_SIZE(sbi
) - 1), 0);
1945 if (!sbi
->write_io_dummy
)
1949 /* get an inode for meta space */
1950 sbi
->meta_inode
= f2fs_iget(sb
, F2FS_META_INO(sbi
));
1951 if (IS_ERR(sbi
->meta_inode
)) {
1952 f2fs_msg(sb
, KERN_ERR
, "Failed to read F2FS meta data inode");
1953 err
= PTR_ERR(sbi
->meta_inode
);
1957 err
= get_valid_checkpoint(sbi
);
1959 f2fs_msg(sb
, KERN_ERR
, "Failed to get valid F2FS checkpoint");
1960 goto free_meta_inode
;
1963 /* Initialize device list */
1964 err
= f2fs_scan_devices(sbi
);
1966 f2fs_msg(sb
, KERN_ERR
, "Failed to find devices");
1970 sbi
->total_valid_node_count
=
1971 le32_to_cpu(sbi
->ckpt
->valid_node_count
);
1972 percpu_counter_set(&sbi
->total_valid_inode_count
,
1973 le32_to_cpu(sbi
->ckpt
->valid_inode_count
));
1974 sbi
->user_block_count
= le64_to_cpu(sbi
->ckpt
->user_block_count
);
1975 sbi
->total_valid_block_count
=
1976 le64_to_cpu(sbi
->ckpt
->valid_block_count
);
1977 sbi
->last_valid_block_count
= sbi
->total_valid_block_count
;
1979 for (i
= 0; i
< NR_INODE_TYPE
; i
++) {
1980 INIT_LIST_HEAD(&sbi
->inode_list
[i
]);
1981 spin_lock_init(&sbi
->inode_lock
[i
]);
1984 init_extent_cache_info(sbi
);
1986 init_ino_entry_info(sbi
);
1988 /* setup f2fs internal modules */
1989 err
= build_segment_manager(sbi
);
1991 f2fs_msg(sb
, KERN_ERR
,
1992 "Failed to initialize F2FS segment manager");
1995 err
= build_node_manager(sbi
);
1997 f2fs_msg(sb
, KERN_ERR
,
1998 "Failed to initialize F2FS node manager");
2002 /* For write statistics */
2003 if (sb
->s_bdev
->bd_part
)
2004 sbi
->sectors_written_start
=
2005 (u64
)part_stat_read(sb
->s_bdev
->bd_part
, sectors
[1]);
2007 /* Read accumulated write IO statistics if exists */
2008 seg_i
= CURSEG_I(sbi
, CURSEG_HOT_NODE
);
2009 if (__exist_node_summaries(sbi
))
2010 sbi
->kbytes_written
=
2011 le64_to_cpu(seg_i
->journal
->info
.kbytes_written
);
2013 build_gc_manager(sbi
);
2015 /* get an inode for node space */
2016 sbi
->node_inode
= f2fs_iget(sb
, F2FS_NODE_INO(sbi
));
2017 if (IS_ERR(sbi
->node_inode
)) {
2018 f2fs_msg(sb
, KERN_ERR
, "Failed to read node inode");
2019 err
= PTR_ERR(sbi
->node_inode
);
2023 f2fs_join_shrinker(sbi
);
2025 /* if there are nt orphan nodes free them */
2026 err
= recover_orphan_inodes(sbi
);
2028 goto free_node_inode
;
2030 /* read root inode and dentry */
2031 root
= f2fs_iget(sb
, F2FS_ROOT_INO(sbi
));
2033 f2fs_msg(sb
, KERN_ERR
, "Failed to read root inode");
2034 err
= PTR_ERR(root
);
2035 goto free_node_inode
;
2037 if (!S_ISDIR(root
->i_mode
) || !root
->i_blocks
|| !root
->i_size
) {
2040 goto free_node_inode
;
2043 sb
->s_root
= d_make_root(root
); /* allocate root dentry */
2046 goto free_root_inode
;
2049 err
= f2fs_build_stats(sbi
);
2051 goto free_root_inode
;
2054 sbi
->s_proc
= proc_mkdir(sb
->s_id
, f2fs_proc_root
);
2057 proc_create_data("segment_info", S_IRUGO
, sbi
->s_proc
,
2058 &f2fs_seq_segment_info_fops
, sb
);
2059 proc_create_data("segment_bits", S_IRUGO
, sbi
->s_proc
,
2060 &f2fs_seq_segment_bits_fops
, sb
);
2063 sbi
->s_kobj
.kset
= f2fs_kset
;
2064 init_completion(&sbi
->s_kobj_unregister
);
2065 err
= kobject_init_and_add(&sbi
->s_kobj
, &f2fs_ktype
, NULL
,
2070 /* recover fsynced data */
2071 if (!test_opt(sbi
, DISABLE_ROLL_FORWARD
)) {
2073 * mount should be failed, when device has readonly mode, and
2074 * previous checkpoint was not done by clean system shutdown.
2076 if (bdev_read_only(sb
->s_bdev
) &&
2077 !is_set_ckpt_flags(sbi
, CP_UMOUNT_FLAG
)) {
2083 set_sbi_flag(sbi
, SBI_NEED_FSCK
);
2088 err
= recover_fsync_data(sbi
, false);
2091 f2fs_msg(sb
, KERN_ERR
,
2092 "Cannot recover all fsync data errno=%d", err
);
2096 err
= recover_fsync_data(sbi
, true);
2098 if (!f2fs_readonly(sb
) && err
> 0) {
2100 f2fs_msg(sb
, KERN_ERR
,
2101 "Need to recover fsync data");
2106 /* recover_fsync_data() cleared this already */
2107 clear_sbi_flag(sbi
, SBI_POR_DOING
);
2110 * If filesystem is not mounted as read-only then
2111 * do start the gc_thread.
2113 if (test_opt(sbi
, BG_GC
) && !f2fs_readonly(sb
)) {
2114 /* After POR, we can run background GC thread.*/
2115 err
= start_gc_thread(sbi
);
2121 /* recover broken superblock */
2123 err
= f2fs_commit_super(sbi
, true);
2124 f2fs_msg(sb
, KERN_INFO
,
2125 "Try to recover %dth superblock, ret: %d",
2126 sbi
->valid_super_block
? 1 : 2, err
);
2129 f2fs_msg(sbi
->sb
, KERN_NOTICE
, "Mounted with checkpoint version = %llx",
2130 cur_cp_version(F2FS_CKPT(sbi
)));
2131 f2fs_update_time(sbi
, CP_TIME
);
2132 f2fs_update_time(sbi
, REQ_TIME
);
2136 f2fs_sync_inode_meta(sbi
);
2137 kobject_del(&sbi
->s_kobj
);
2138 kobject_put(&sbi
->s_kobj
);
2139 wait_for_completion(&sbi
->s_kobj_unregister
);
2142 remove_proc_entry("segment_info", sbi
->s_proc
);
2143 remove_proc_entry("segment_bits", sbi
->s_proc
);
2144 remove_proc_entry(sb
->s_id
, f2fs_proc_root
);
2146 f2fs_destroy_stats(sbi
);
2151 truncate_inode_pages_final(NODE_MAPPING(sbi
));
2152 mutex_lock(&sbi
->umount_mutex
);
2153 release_ino_entry(sbi
, true);
2154 f2fs_leave_shrinker(sbi
);
2156 * Some dirty meta pages can be produced by recover_orphan_inodes()
2157 * failed by EIO. Then, iput(node_inode) can trigger balance_fs_bg()
2158 * followed by write_checkpoint() through f2fs_write_node_pages(), which
2159 * falls into an infinite loop in sync_meta_pages().
2161 truncate_inode_pages_final(META_MAPPING(sbi
));
2162 iput(sbi
->node_inode
);
2163 mutex_unlock(&sbi
->umount_mutex
);
2165 destroy_node_manager(sbi
);
2167 destroy_segment_manager(sbi
);
2169 destroy_device_list(sbi
);
2172 make_bad_inode(sbi
->meta_inode
);
2173 iput(sbi
->meta_inode
);
2175 mempool_destroy(sbi
->write_io_dummy
);
2177 destroy_percpu_info(sbi
);
2182 if (sbi
->s_chksum_driver
)
2183 crypto_free_shash(sbi
->s_chksum_driver
);
2186 /* give only one another chance */
2189 shrink_dcache_sb(sb
);
2195 static struct dentry
*f2fs_mount(struct file_system_type
*fs_type
, int flags
,
2196 const char *dev_name
, void *data
)
2198 return mount_bdev(fs_type
, flags
, dev_name
, data
, f2fs_fill_super
);
2201 static void kill_f2fs_super(struct super_block
*sb
)
2204 set_sbi_flag(F2FS_SB(sb
), SBI_IS_CLOSE
);
2205 kill_block_super(sb
);
2208 static struct file_system_type f2fs_fs_type
= {
2209 .owner
= THIS_MODULE
,
2211 .mount
= f2fs_mount
,
2212 .kill_sb
= kill_f2fs_super
,
2213 .fs_flags
= FS_REQUIRES_DEV
,
2215 MODULE_ALIAS_FS("f2fs");
2217 static int __init
init_inodecache(void)
2219 f2fs_inode_cachep
= kmem_cache_create("f2fs_inode_cache",
2220 sizeof(struct f2fs_inode_info
), 0,
2221 SLAB_RECLAIM_ACCOUNT
|SLAB_ACCOUNT
, NULL
);
2222 if (!f2fs_inode_cachep
)
2227 static void destroy_inodecache(void)
2230 * Make sure all delayed rcu free inodes are flushed before we
2234 kmem_cache_destroy(f2fs_inode_cachep
);
2237 static int __init
init_f2fs_fs(void)
2241 f2fs_build_trace_ios();
2243 err
= init_inodecache();
2246 err
= create_node_manager_caches();
2248 goto free_inodecache
;
2249 err
= create_segment_manager_caches();
2251 goto free_node_manager_caches
;
2252 err
= create_checkpoint_caches();
2254 goto free_segment_manager_caches
;
2255 err
= create_extent_cache();
2257 goto free_checkpoint_caches
;
2258 f2fs_kset
= kset_create_and_add("f2fs", NULL
, fs_kobj
);
2261 goto free_extent_cache
;
2263 err
= register_shrinker(&f2fs_shrinker_info
);
2267 err
= register_filesystem(&f2fs_fs_type
);
2270 err
= f2fs_create_root_stats();
2272 goto free_filesystem
;
2273 f2fs_proc_root
= proc_mkdir("fs/f2fs", NULL
);
2277 unregister_filesystem(&f2fs_fs_type
);
2279 unregister_shrinker(&f2fs_shrinker_info
);
2281 kset_unregister(f2fs_kset
);
2283 destroy_extent_cache();
2284 free_checkpoint_caches
:
2285 destroy_checkpoint_caches();
2286 free_segment_manager_caches
:
2287 destroy_segment_manager_caches();
2288 free_node_manager_caches
:
2289 destroy_node_manager_caches();
2291 destroy_inodecache();
2296 static void __exit
exit_f2fs_fs(void)
2298 remove_proc_entry("fs/f2fs", NULL
);
2299 f2fs_destroy_root_stats();
2300 unregister_filesystem(&f2fs_fs_type
);
2301 unregister_shrinker(&f2fs_shrinker_info
);
2302 kset_unregister(f2fs_kset
);
2303 destroy_extent_cache();
2304 destroy_checkpoint_caches();
2305 destroy_segment_manager_caches();
2306 destroy_node_manager_caches();
2307 destroy_inodecache();
2308 f2fs_destroy_trace_ios();
2311 module_init(init_f2fs_fs
)
2312 module_exit(exit_f2fs_fs
)
2314 MODULE_AUTHOR("Samsung Electronics's Praesto Team");
2315 MODULE_DESCRIPTION("Flash Friendly File System");
2316 MODULE_LICENSE("GPL");