Jaegeuk Kim | 0a8165d | 2012-11-29 13:28:09 +0900 | [diff] [blame] | 1 | /* |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 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> |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 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> |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 21 | #include <linux/proc_fs.h> |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 22 | #include <linux/random.h> |
| 23 | #include <linux/exportfs.h> |
Namjae Jeon | d3ee456 | 2013-03-17 17:26:14 +0900 | [diff] [blame] | 24 | #include <linux/blkdev.h> |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 25 | #include <linux/f2fs_fs.h> |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 26 | #include <linux/sysfs.h> |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 27 | |
| 28 | #include "f2fs.h" |
| 29 | #include "node.h" |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 30 | #include "segment.h" |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 31 | #include "xattr.h" |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 32 | #include "gc.h" |
Jaegeuk Kim | db9f7c1 | 2014-12-17 20:04:08 -0800 | [diff] [blame] | 33 | #include "trace.h" |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 34 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 35 | #define CREATE_TRACE_POINTS |
| 36 | #include <trace/events/f2fs.h> |
| 37 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 38 | static struct proc_dir_entry *f2fs_proc_root; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 39 | static struct kmem_cache *f2fs_inode_cachep; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 40 | static struct kset *f2fs_kset; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 41 | |
| 42 | enum { |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 43 | Opt_gc_background, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 44 | Opt_disable_roll_forward, |
Jaegeuk Kim | 2d834bf | 2015-01-23 18:33:46 -0800 | [diff] [blame] | 45 | Opt_norecovery, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 46 | Opt_discard, |
| 47 | Opt_noheap, |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 48 | Opt_user_xattr, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 49 | Opt_nouser_xattr, |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 50 | Opt_acl, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 51 | Opt_noacl, |
| 52 | Opt_active_logs, |
| 53 | Opt_disable_ext_identify, |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 54 | Opt_inline_xattr, |
Huajun Li | 8274de7 | 2013-11-10 23:13:17 +0800 | [diff] [blame] | 55 | Opt_inline_data, |
Chao Yu | 5efd3c6 | 2014-09-24 18:16:13 +0800 | [diff] [blame] | 56 | Opt_inline_dentry, |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 57 | Opt_flush_merge, |
Jaegeuk Kim | 0f7b2ab | 2014-07-23 09:57:31 -0700 | [diff] [blame] | 58 | Opt_nobarrier, |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 59 | Opt_fastboot, |
Chao Yu | 8967215 | 2015-02-05 17:55:51 +0800 | [diff] [blame] | 60 | Opt_extent_cache, |
Wanpeng Li | 7534279 | 2015-03-24 10:20:27 +0800 | [diff] [blame] | 61 | Opt_noinline_data, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 62 | Opt_err, |
| 63 | }; |
| 64 | |
| 65 | static match_table_t f2fs_tokens = { |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 66 | {Opt_gc_background, "background_gc=%s"}, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 67 | {Opt_disable_roll_forward, "disable_roll_forward"}, |
Jaegeuk Kim | 2d834bf | 2015-01-23 18:33:46 -0800 | [diff] [blame] | 68 | {Opt_norecovery, "norecovery"}, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 69 | {Opt_discard, "discard"}, |
| 70 | {Opt_noheap, "no_heap"}, |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 71 | {Opt_user_xattr, "user_xattr"}, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 72 | {Opt_nouser_xattr, "nouser_xattr"}, |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 73 | {Opt_acl, "acl"}, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 74 | {Opt_noacl, "noacl"}, |
| 75 | {Opt_active_logs, "active_logs=%u"}, |
| 76 | {Opt_disable_ext_identify, "disable_ext_identify"}, |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 77 | {Opt_inline_xattr, "inline_xattr"}, |
Huajun Li | 8274de7 | 2013-11-10 23:13:17 +0800 | [diff] [blame] | 78 | {Opt_inline_data, "inline_data"}, |
Chao Yu | 5efd3c6 | 2014-09-24 18:16:13 +0800 | [diff] [blame] | 79 | {Opt_inline_dentry, "inline_dentry"}, |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 80 | {Opt_flush_merge, "flush_merge"}, |
Jaegeuk Kim | 0f7b2ab | 2014-07-23 09:57:31 -0700 | [diff] [blame] | 81 | {Opt_nobarrier, "nobarrier"}, |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 82 | {Opt_fastboot, "fastboot"}, |
Chao Yu | 8967215 | 2015-02-05 17:55:51 +0800 | [diff] [blame] | 83 | {Opt_extent_cache, "extent_cache"}, |
Wanpeng Li | 7534279 | 2015-03-24 10:20:27 +0800 | [diff] [blame] | 84 | {Opt_noinline_data, "noinline_data"}, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 85 | {Opt_err, NULL}, |
| 86 | }; |
| 87 | |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 88 | /* Sysfs support for f2fs */ |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 89 | enum { |
| 90 | GC_THREAD, /* struct f2fs_gc_thread */ |
| 91 | SM_INFO, /* struct f2fs_sm_info */ |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 92 | NM_INFO, /* struct f2fs_nm_info */ |
Jaegeuk Kim | b1c57c1 | 2014-01-08 13:45:08 +0900 | [diff] [blame] | 93 | F2FS_SBI, /* struct f2fs_sb_info */ |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 94 | }; |
| 95 | |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 96 | struct f2fs_attr { |
| 97 | struct attribute attr; |
| 98 | ssize_t (*show)(struct f2fs_attr *, struct f2fs_sb_info *, char *); |
| 99 | ssize_t (*store)(struct f2fs_attr *, struct f2fs_sb_info *, |
| 100 | const char *, size_t); |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 101 | int struct_type; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 102 | int offset; |
| 103 | }; |
| 104 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 105 | static unsigned char *__struct_ptr(struct f2fs_sb_info *sbi, int struct_type) |
| 106 | { |
| 107 | if (struct_type == GC_THREAD) |
| 108 | return (unsigned char *)sbi->gc_thread; |
| 109 | else if (struct_type == SM_INFO) |
| 110 | return (unsigned char *)SM_I(sbi); |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 111 | else if (struct_type == NM_INFO) |
| 112 | return (unsigned char *)NM_I(sbi); |
Jaegeuk Kim | b1c57c1 | 2014-01-08 13:45:08 +0900 | [diff] [blame] | 113 | else if (struct_type == F2FS_SBI) |
| 114 | return (unsigned char *)sbi; |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 115 | return NULL; |
| 116 | } |
| 117 | |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 118 | static ssize_t f2fs_sbi_show(struct f2fs_attr *a, |
| 119 | struct f2fs_sb_info *sbi, char *buf) |
| 120 | { |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 121 | unsigned char *ptr = NULL; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 122 | unsigned int *ui; |
| 123 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 124 | ptr = __struct_ptr(sbi, a->struct_type); |
| 125 | if (!ptr) |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 126 | return -EINVAL; |
| 127 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 128 | ui = (unsigned int *)(ptr + a->offset); |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 129 | |
| 130 | return snprintf(buf, PAGE_SIZE, "%u\n", *ui); |
| 131 | } |
| 132 | |
| 133 | static ssize_t f2fs_sbi_store(struct f2fs_attr *a, |
| 134 | struct f2fs_sb_info *sbi, |
| 135 | const char *buf, size_t count) |
| 136 | { |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 137 | unsigned char *ptr; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 138 | unsigned long t; |
| 139 | unsigned int *ui; |
| 140 | ssize_t ret; |
| 141 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 142 | ptr = __struct_ptr(sbi, a->struct_type); |
| 143 | if (!ptr) |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 144 | return -EINVAL; |
| 145 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 146 | ui = (unsigned int *)(ptr + a->offset); |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 147 | |
| 148 | ret = kstrtoul(skip_spaces(buf), 0, &t); |
| 149 | if (ret < 0) |
| 150 | return ret; |
| 151 | *ui = t; |
| 152 | return count; |
| 153 | } |
| 154 | |
| 155 | static ssize_t f2fs_attr_show(struct kobject *kobj, |
| 156 | struct attribute *attr, char *buf) |
| 157 | { |
| 158 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| 159 | s_kobj); |
| 160 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); |
| 161 | |
| 162 | return a->show ? a->show(a, sbi, buf) : 0; |
| 163 | } |
| 164 | |
| 165 | static ssize_t f2fs_attr_store(struct kobject *kobj, struct attribute *attr, |
| 166 | const char *buf, size_t len) |
| 167 | { |
| 168 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| 169 | s_kobj); |
| 170 | struct f2fs_attr *a = container_of(attr, struct f2fs_attr, attr); |
| 171 | |
| 172 | return a->store ? a->store(a, sbi, buf, len) : 0; |
| 173 | } |
| 174 | |
| 175 | static void f2fs_sb_release(struct kobject *kobj) |
| 176 | { |
| 177 | struct f2fs_sb_info *sbi = container_of(kobj, struct f2fs_sb_info, |
| 178 | s_kobj); |
| 179 | complete(&sbi->s_kobj_unregister); |
| 180 | } |
| 181 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 182 | #define F2FS_ATTR_OFFSET(_struct_type, _name, _mode, _show, _store, _offset) \ |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 183 | static struct f2fs_attr f2fs_attr_##_name = { \ |
| 184 | .attr = {.name = __stringify(_name), .mode = _mode }, \ |
| 185 | .show = _show, \ |
| 186 | .store = _store, \ |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 187 | .struct_type = _struct_type, \ |
| 188 | .offset = _offset \ |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 189 | } |
| 190 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 191 | #define F2FS_RW_ATTR(struct_type, struct_name, name, elname) \ |
| 192 | F2FS_ATTR_OFFSET(struct_type, name, 0644, \ |
| 193 | f2fs_sbi_show, f2fs_sbi_store, \ |
| 194 | offsetof(struct struct_name, elname)) |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 195 | |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 196 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_min_sleep_time, min_sleep_time); |
| 197 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_max_sleep_time, max_sleep_time); |
| 198 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_no_gc_sleep_time, no_gc_sleep_time); |
| 199 | F2FS_RW_ATTR(GC_THREAD, f2fs_gc_kthread, gc_idle, gc_idle); |
| 200 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, reclaim_segments, rec_prefree_segments); |
Jaegeuk Kim | 7ac8c3b | 2013-11-12 15:00:38 +0900 | [diff] [blame] | 201 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, max_small_discards, max_discards); |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 202 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, batched_trim_sections, trim_sections); |
Jaegeuk Kim | 216fbd6 | 2013-11-07 13:13:42 +0900 | [diff] [blame] | 203 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, ipu_policy, ipu_policy); |
| 204 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_ipu_util, min_ipu_util); |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 205 | F2FS_RW_ATTR(SM_INFO, f2fs_sm_info, min_fsync_blocks, min_fsync_blocks); |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 206 | F2FS_RW_ATTR(NM_INFO, f2fs_nm_info, ram_thresh, ram_thresh); |
Jaegeuk Kim | b1c57c1 | 2014-01-08 13:45:08 +0900 | [diff] [blame] | 207 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, max_victim_search, max_victim_search); |
Jaegeuk Kim | ab9fa66 | 2014-02-27 20:09:05 +0900 | [diff] [blame] | 208 | F2FS_RW_ATTR(F2FS_SBI, f2fs_sb_info, dir_level, dir_level); |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 209 | |
| 210 | #define ATTR_LIST(name) (&f2fs_attr_##name.attr) |
| 211 | static struct attribute *f2fs_attrs[] = { |
| 212 | ATTR_LIST(gc_min_sleep_time), |
| 213 | ATTR_LIST(gc_max_sleep_time), |
| 214 | ATTR_LIST(gc_no_gc_sleep_time), |
Namjae Jeon | d2dc095 | 2013-08-04 23:10:15 +0900 | [diff] [blame] | 215 | ATTR_LIST(gc_idle), |
Jaegeuk Kim | ea91e9b | 2013-10-24 15:49:07 +0900 | [diff] [blame] | 216 | ATTR_LIST(reclaim_segments), |
Jaegeuk Kim | 7ac8c3b | 2013-11-12 15:00:38 +0900 | [diff] [blame] | 217 | ATTR_LIST(max_small_discards), |
Jaegeuk Kim | bba681c | 2015-01-26 17:41:23 -0800 | [diff] [blame] | 218 | ATTR_LIST(batched_trim_sections), |
Jaegeuk Kim | 216fbd6 | 2013-11-07 13:13:42 +0900 | [diff] [blame] | 219 | ATTR_LIST(ipu_policy), |
| 220 | ATTR_LIST(min_ipu_util), |
Jaegeuk Kim | c1ce1b0 | 2014-09-10 16:53:02 -0700 | [diff] [blame] | 221 | ATTR_LIST(min_fsync_blocks), |
Jaegeuk Kim | b1c57c1 | 2014-01-08 13:45:08 +0900 | [diff] [blame] | 222 | ATTR_LIST(max_victim_search), |
Jaegeuk Kim | ab9fa66 | 2014-02-27 20:09:05 +0900 | [diff] [blame] | 223 | ATTR_LIST(dir_level), |
Jaegeuk Kim | cdfc41c | 2014-03-19 13:31:37 +0900 | [diff] [blame] | 224 | ATTR_LIST(ram_thresh), |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 225 | NULL, |
| 226 | }; |
| 227 | |
| 228 | static const struct sysfs_ops f2fs_attr_ops = { |
| 229 | .show = f2fs_attr_show, |
| 230 | .store = f2fs_attr_store, |
| 231 | }; |
| 232 | |
| 233 | static struct kobj_type f2fs_ktype = { |
| 234 | .default_attrs = f2fs_attrs, |
| 235 | .sysfs_ops = &f2fs_attr_ops, |
| 236 | .release = f2fs_sb_release, |
| 237 | }; |
| 238 | |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 239 | void f2fs_msg(struct super_block *sb, const char *level, const char *fmt, ...) |
| 240 | { |
| 241 | struct va_format vaf; |
| 242 | va_list args; |
| 243 | |
| 244 | va_start(args, fmt); |
| 245 | vaf.fmt = fmt; |
| 246 | vaf.va = &args; |
| 247 | printk("%sF2FS-fs (%s): %pV\n", level, sb->s_id, &vaf); |
| 248 | va_end(args); |
| 249 | } |
| 250 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 251 | static void init_once(void *foo) |
| 252 | { |
| 253 | struct f2fs_inode_info *fi = (struct f2fs_inode_info *) foo; |
| 254 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 255 | inode_init_once(&fi->vfs_inode); |
| 256 | } |
| 257 | |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 258 | static int parse_options(struct super_block *sb, char *options) |
| 259 | { |
| 260 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
Chao Yu | 09d54cd | 2015-06-08 13:20:10 +0800 | [diff] [blame] | 261 | struct request_queue *q; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 262 | substring_t args[MAX_OPT_ARGS]; |
| 263 | char *p, *name; |
| 264 | int arg = 0; |
| 265 | |
| 266 | if (!options) |
| 267 | return 0; |
| 268 | |
| 269 | while ((p = strsep(&options, ",")) != NULL) { |
| 270 | int token; |
| 271 | if (!*p) |
| 272 | continue; |
| 273 | /* |
| 274 | * Initialize args struct so we know whether arg was |
| 275 | * found; some options take optional arguments. |
| 276 | */ |
| 277 | args[0].to = args[0].from = NULL; |
| 278 | token = match_token(p, f2fs_tokens, args); |
| 279 | |
| 280 | switch (token) { |
| 281 | case Opt_gc_background: |
| 282 | name = match_strdup(&args[0]); |
| 283 | |
| 284 | if (!name) |
| 285 | return -ENOMEM; |
Chao Yu | 04c0938 | 2014-03-18 09:07:59 +0800 | [diff] [blame] | 286 | if (strlen(name) == 2 && !strncmp(name, "on", 2)) |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 287 | set_opt(sbi, BG_GC); |
Chao Yu | 04c0938 | 2014-03-18 09:07:59 +0800 | [diff] [blame] | 288 | else if (strlen(name) == 3 && !strncmp(name, "off", 3)) |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 289 | clear_opt(sbi, BG_GC); |
| 290 | else { |
| 291 | kfree(name); |
| 292 | return -EINVAL; |
| 293 | } |
| 294 | kfree(name); |
| 295 | break; |
| 296 | case Opt_disable_roll_forward: |
| 297 | set_opt(sbi, DISABLE_ROLL_FORWARD); |
| 298 | break; |
Jaegeuk Kim | 2d834bf | 2015-01-23 18:33:46 -0800 | [diff] [blame] | 299 | case Opt_norecovery: |
| 300 | /* this option mounts f2fs with ro */ |
| 301 | set_opt(sbi, DISABLE_ROLL_FORWARD); |
| 302 | if (!f2fs_readonly(sb)) |
| 303 | return -EINVAL; |
| 304 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 305 | case Opt_discard: |
Chao Yu | 09d54cd | 2015-06-08 13:20:10 +0800 | [diff] [blame] | 306 | q = bdev_get_queue(sb->s_bdev); |
| 307 | if (blk_queue_discard(q)) { |
| 308 | set_opt(sbi, DISCARD); |
| 309 | } else { |
| 310 | f2fs_msg(sb, KERN_WARNING, |
| 311 | "mounting with \"discard\" option, but " |
| 312 | "the device does not support discard"); |
| 313 | } |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 314 | break; |
| 315 | case Opt_noheap: |
| 316 | set_opt(sbi, NOHEAP); |
| 317 | break; |
| 318 | #ifdef CONFIG_F2FS_FS_XATTR |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 319 | case Opt_user_xattr: |
| 320 | set_opt(sbi, XATTR_USER); |
| 321 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 322 | case Opt_nouser_xattr: |
| 323 | clear_opt(sbi, XATTR_USER); |
| 324 | break; |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 325 | case Opt_inline_xattr: |
| 326 | set_opt(sbi, INLINE_XATTR); |
| 327 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 328 | #else |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 329 | case Opt_user_xattr: |
| 330 | f2fs_msg(sb, KERN_INFO, |
| 331 | "user_xattr options not supported"); |
| 332 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 333 | case Opt_nouser_xattr: |
| 334 | f2fs_msg(sb, KERN_INFO, |
| 335 | "nouser_xattr options not supported"); |
| 336 | break; |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 337 | case Opt_inline_xattr: |
| 338 | f2fs_msg(sb, KERN_INFO, |
| 339 | "inline_xattr options not supported"); |
| 340 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 341 | #endif |
| 342 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 343 | case Opt_acl: |
| 344 | set_opt(sbi, POSIX_ACL); |
| 345 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 346 | case Opt_noacl: |
| 347 | clear_opt(sbi, POSIX_ACL); |
| 348 | break; |
| 349 | #else |
Kelly Anderson | 4058c51 | 2013-10-07 11:36:20 +0900 | [diff] [blame] | 350 | case Opt_acl: |
| 351 | f2fs_msg(sb, KERN_INFO, "acl options not supported"); |
| 352 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 353 | case Opt_noacl: |
| 354 | f2fs_msg(sb, KERN_INFO, "noacl options not supported"); |
| 355 | break; |
| 356 | #endif |
| 357 | case Opt_active_logs: |
| 358 | if (args->from && match_int(args, &arg)) |
| 359 | return -EINVAL; |
| 360 | if (arg != 2 && arg != 4 && arg != NR_CURSEG_TYPE) |
| 361 | return -EINVAL; |
| 362 | sbi->active_logs = arg; |
| 363 | break; |
| 364 | case Opt_disable_ext_identify: |
| 365 | set_opt(sbi, DISABLE_EXT_IDENTIFY); |
| 366 | break; |
Huajun Li | 8274de7 | 2013-11-10 23:13:17 +0800 | [diff] [blame] | 367 | case Opt_inline_data: |
| 368 | set_opt(sbi, INLINE_DATA); |
| 369 | break; |
Chao Yu | 5efd3c6 | 2014-09-24 18:16:13 +0800 | [diff] [blame] | 370 | case Opt_inline_dentry: |
| 371 | set_opt(sbi, INLINE_DENTRY); |
| 372 | break; |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 373 | case Opt_flush_merge: |
| 374 | set_opt(sbi, FLUSH_MERGE); |
| 375 | break; |
Jaegeuk Kim | 0f7b2ab | 2014-07-23 09:57:31 -0700 | [diff] [blame] | 376 | case Opt_nobarrier: |
| 377 | set_opt(sbi, NOBARRIER); |
| 378 | break; |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 379 | case Opt_fastboot: |
| 380 | set_opt(sbi, FASTBOOT); |
| 381 | break; |
Chao Yu | 8967215 | 2015-02-05 17:55:51 +0800 | [diff] [blame] | 382 | case Opt_extent_cache: |
| 383 | set_opt(sbi, EXTENT_CACHE); |
| 384 | break; |
Wanpeng Li | 7534279 | 2015-03-24 10:20:27 +0800 | [diff] [blame] | 385 | case Opt_noinline_data: |
| 386 | clear_opt(sbi, INLINE_DATA); |
| 387 | break; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 388 | default: |
| 389 | f2fs_msg(sb, KERN_ERR, |
| 390 | "Unrecognized mount option \"%s\" or missing value", |
| 391 | p); |
| 392 | return -EINVAL; |
| 393 | } |
| 394 | } |
| 395 | return 0; |
| 396 | } |
| 397 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 398 | static struct inode *f2fs_alloc_inode(struct super_block *sb) |
| 399 | { |
| 400 | struct f2fs_inode_info *fi; |
| 401 | |
Chao Yu | a0acdfe | 2013-12-05 09:54:00 +0800 | [diff] [blame] | 402 | fi = kmem_cache_alloc(f2fs_inode_cachep, GFP_F2FS_ZERO); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 403 | if (!fi) |
| 404 | return NULL; |
| 405 | |
| 406 | init_once((void *) fi); |
| 407 | |
Masanari Iida | 434720f | 2013-03-19 08:03:35 +0900 | [diff] [blame] | 408 | /* Initialize f2fs-specific inode info */ |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 409 | fi->vfs_inode.i_version = 1; |
Jaegeuk Kim | a7ffdbe | 2014-09-12 15:53:45 -0700 | [diff] [blame] | 410 | atomic_set(&fi->dirty_pages, 0); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 411 | fi->i_current_depth = 1; |
| 412 | fi->i_advise = 0; |
Chao Yu | 0c872e2 | 2015-02-05 17:46:29 +0800 | [diff] [blame] | 413 | rwlock_init(&fi->ext_lock); |
Jaegeuk Kim | d928bfb | 2014-03-20 19:10:08 +0900 | [diff] [blame] | 414 | init_rwsem(&fi->i_sem); |
Jaegeuk Kim | 34ba94b | 2014-10-09 13:19:53 -0700 | [diff] [blame] | 415 | INIT_RADIX_TREE(&fi->inmem_root, GFP_NOFS); |
Jaegeuk Kim | 88b88a6 | 2014-10-06 17:39:50 -0700 | [diff] [blame] | 416 | INIT_LIST_HEAD(&fi->inmem_pages); |
| 417 | mutex_init(&fi->inmem_lock); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 418 | |
| 419 | set_inode_flag(fi, FI_NEW_INODE); |
| 420 | |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 421 | if (test_opt(F2FS_SB(sb), INLINE_XATTR)) |
| 422 | set_inode_flag(fi, FI_INLINE_XATTR); |
| 423 | |
Jaegeuk Kim | ab9fa66 | 2014-02-27 20:09:05 +0900 | [diff] [blame] | 424 | /* Will be used by directory only */ |
| 425 | fi->i_dir_level = F2FS_SB(sb)->dir_level; |
| 426 | |
Jaegeuk Kim | 57e5055 | 2015-04-20 19:52:47 -0700 | [diff] [blame] | 427 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 428 | fi->i_crypt_info = NULL; |
| 429 | #endif |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 430 | return &fi->vfs_inode; |
| 431 | } |
| 432 | |
Jaegeuk Kim | 531ad7d | 2013-04-30 11:33:27 +0900 | [diff] [blame] | 433 | static int f2fs_drop_inode(struct inode *inode) |
| 434 | { |
| 435 | /* |
| 436 | * This is to avoid a deadlock condition like below. |
| 437 | * writeback_single_inode(inode) |
| 438 | * - f2fs_write_data_page |
| 439 | * - f2fs_gc -> iput -> evict |
| 440 | * - inode_wait_for_writeback(inode) |
| 441 | */ |
Jaegeuk Kim | 06e1bc0 | 2015-05-13 14:35:14 -0700 | [diff] [blame] | 442 | if (!inode_unhashed(inode) && inode->i_state & I_SYNC) { |
| 443 | if (!inode->i_nlink && !is_bad_inode(inode)) { |
| 444 | spin_unlock(&inode->i_lock); |
| 445 | |
| 446 | /* some remained atomic pages should discarded */ |
| 447 | if (f2fs_is_atomic_file(inode)) |
| 448 | commit_inmem_pages(inode, true); |
| 449 | |
| 450 | sb_start_intwrite(inode->i_sb); |
| 451 | i_size_write(inode, 0); |
| 452 | |
| 453 | if (F2FS_HAS_BLOCKS(inode)) |
| 454 | f2fs_truncate(inode); |
| 455 | |
| 456 | sb_end_intwrite(inode->i_sb); |
| 457 | |
| 458 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 459 | if (F2FS_I(inode)->i_crypt_info) |
Jaegeuk Kim | 26bf3dc | 2015-05-19 22:26:54 -0700 | [diff] [blame] | 460 | f2fs_free_encryption_info(inode, |
| 461 | F2FS_I(inode)->i_crypt_info); |
Jaegeuk Kim | 06e1bc0 | 2015-05-13 14:35:14 -0700 | [diff] [blame] | 462 | #endif |
| 463 | spin_lock(&inode->i_lock); |
| 464 | } |
Jaegeuk Kim | 531ad7d | 2013-04-30 11:33:27 +0900 | [diff] [blame] | 465 | return 0; |
Jaegeuk Kim | 06e1bc0 | 2015-05-13 14:35:14 -0700 | [diff] [blame] | 466 | } |
Jaegeuk Kim | 531ad7d | 2013-04-30 11:33:27 +0900 | [diff] [blame] | 467 | return generic_drop_inode(inode); |
| 468 | } |
| 469 | |
Jaegeuk Kim | b378387 | 2013-06-10 09:17:01 +0900 | [diff] [blame] | 470 | /* |
| 471 | * f2fs_dirty_inode() is called from __mark_inode_dirty() |
| 472 | * |
| 473 | * We should call set_dirty_inode to write the dirty inode through write_inode. |
| 474 | */ |
| 475 | static void f2fs_dirty_inode(struct inode *inode, int flags) |
| 476 | { |
| 477 | set_inode_flag(F2FS_I(inode), FI_DIRTY_INODE); |
Jaegeuk Kim | b378387 | 2013-06-10 09:17:01 +0900 | [diff] [blame] | 478 | } |
| 479 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 480 | static void f2fs_i_callback(struct rcu_head *head) |
| 481 | { |
| 482 | struct inode *inode = container_of(head, struct inode, i_rcu); |
| 483 | kmem_cache_free(f2fs_inode_cachep, F2FS_I(inode)); |
| 484 | } |
| 485 | |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 486 | static void f2fs_destroy_inode(struct inode *inode) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 487 | { |
| 488 | call_rcu(&inode->i_rcu, f2fs_i_callback); |
| 489 | } |
| 490 | |
| 491 | static void f2fs_put_super(struct super_block *sb) |
| 492 | { |
| 493 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 494 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 495 | if (sbi->s_proc) { |
| 496 | remove_proc_entry("segment_info", sbi->s_proc); |
| 497 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
| 498 | } |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 499 | kobject_del(&sbi->s_kobj); |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 500 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 501 | f2fs_destroy_stats(sbi); |
| 502 | stop_gc_thread(sbi); |
| 503 | |
Jaegeuk Kim | 85dc2f2 | 2015-01-14 17:41:41 -0800 | [diff] [blame] | 504 | /* |
| 505 | * We don't need to do checkpoint when superblock is clean. |
| 506 | * But, the previous checkpoint was not done by umount, it needs to do |
| 507 | * clean checkpoint again. |
| 508 | */ |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 509 | if (is_sbi_flag_set(sbi, SBI_IS_DIRTY) || |
Jaegeuk Kim | 85dc2f2 | 2015-01-14 17:41:41 -0800 | [diff] [blame] | 510 | !is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG)) { |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 511 | struct cp_control cpc = { |
| 512 | .reason = CP_UMOUNT, |
| 513 | }; |
| 514 | write_checkpoint(sbi, &cpc); |
| 515 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 516 | |
Jaegeuk Kim | cf779ca | 2014-08-11 18:37:46 -0700 | [diff] [blame] | 517 | /* |
| 518 | * normally superblock is clean, so we need to release this. |
| 519 | * In addition, EIO will skip do checkpoint, we need this as well. |
| 520 | */ |
Jaegeuk Kim | 6f12ac2 | 2014-08-19 09:48:22 -0700 | [diff] [blame] | 521 | release_dirty_inode(sbi); |
Jaegeuk Kim | 4b2fecc | 2014-09-20 22:06:39 -0700 | [diff] [blame] | 522 | release_discard_addrs(sbi); |
Jaegeuk Kim | 6f12ac2 | 2014-08-19 09:48:22 -0700 | [diff] [blame] | 523 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 524 | iput(sbi->node_inode); |
| 525 | iput(sbi->meta_inode); |
| 526 | |
| 527 | /* destroy f2fs internal modules */ |
| 528 | destroy_node_manager(sbi); |
| 529 | destroy_segment_manager(sbi); |
| 530 | |
| 531 | kfree(sbi->ckpt); |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 532 | kobject_put(&sbi->s_kobj); |
| 533 | wait_for_completion(&sbi->s_kobj_unregister); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 534 | |
| 535 | sb->s_fs_info = NULL; |
| 536 | brelse(sbi->raw_super_buf); |
| 537 | kfree(sbi); |
| 538 | } |
| 539 | |
| 540 | int f2fs_sync_fs(struct super_block *sb, int sync) |
| 541 | { |
| 542 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 543 | |
Namjae Jeon | a2a4a7e | 2013-04-20 01:28:40 +0900 | [diff] [blame] | 544 | trace_f2fs_sync_fs(sb, sync); |
| 545 | |
Jaegeuk Kim | b747375 | 2013-04-01 08:32:21 +0900 | [diff] [blame] | 546 | if (sync) { |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 547 | struct cp_control cpc; |
| 548 | |
Jaegeuk Kim | 119ee91 | 2015-01-29 11:45:33 -0800 | [diff] [blame] | 549 | cpc.reason = __get_cp_reason(sbi); |
| 550 | |
Jaegeuk Kim | b747375 | 2013-04-01 08:32:21 +0900 | [diff] [blame] | 551 | mutex_lock(&sbi->gc_mutex); |
Jaegeuk Kim | 75ab4cb | 2014-09-20 21:57:51 -0700 | [diff] [blame] | 552 | write_checkpoint(sbi, &cpc); |
Jaegeuk Kim | b747375 | 2013-04-01 08:32:21 +0900 | [diff] [blame] | 553 | mutex_unlock(&sbi->gc_mutex); |
| 554 | } else { |
Jaegeuk Kim | 7d82db8 | 2013-01-11 13:10:49 +0900 | [diff] [blame] | 555 | f2fs_balance_fs(sbi); |
Jaegeuk Kim | b747375 | 2013-04-01 08:32:21 +0900 | [diff] [blame] | 556 | } |
Jaegeuk Kim | 05ca363 | 2015-04-23 14:38:15 -0700 | [diff] [blame] | 557 | f2fs_trace_ios(NULL, 1); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 558 | |
Namjae Jeon | 64c576f | 2012-12-22 12:10:27 +0900 | [diff] [blame] | 559 | return 0; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 560 | } |
| 561 | |
Changman Lee | d6212a5 | 2013-01-29 18:30:07 +0900 | [diff] [blame] | 562 | static int f2fs_freeze(struct super_block *sb) |
| 563 | { |
| 564 | int err; |
| 565 | |
Jaegeuk Kim | 77888c1 | 2013-05-20 20:28:47 +0900 | [diff] [blame] | 566 | if (f2fs_readonly(sb)) |
Changman Lee | d6212a5 | 2013-01-29 18:30:07 +0900 | [diff] [blame] | 567 | return 0; |
| 568 | |
| 569 | err = f2fs_sync_fs(sb, 1); |
| 570 | return err; |
| 571 | } |
| 572 | |
| 573 | static int f2fs_unfreeze(struct super_block *sb) |
| 574 | { |
| 575 | return 0; |
| 576 | } |
| 577 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 578 | static int f2fs_statfs(struct dentry *dentry, struct kstatfs *buf) |
| 579 | { |
| 580 | struct super_block *sb = dentry->d_sb; |
| 581 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 582 | u64 id = huge_encode_dev(sb->s_bdev->bd_dev); |
| 583 | block_t total_count, user_block_count, start_count, ovp_count; |
| 584 | |
| 585 | total_count = le64_to_cpu(sbi->raw_super->block_count); |
| 586 | user_block_count = sbi->user_block_count; |
| 587 | start_count = le32_to_cpu(sbi->raw_super->segment0_blkaddr); |
| 588 | ovp_count = SM_I(sbi)->ovp_segments << sbi->log_blocks_per_seg; |
| 589 | buf->f_type = F2FS_SUPER_MAGIC; |
| 590 | buf->f_bsize = sbi->blocksize; |
| 591 | |
| 592 | buf->f_blocks = total_count - start_count; |
| 593 | buf->f_bfree = buf->f_blocks - valid_user_blocks(sbi) - ovp_count; |
| 594 | buf->f_bavail = user_block_count - valid_user_blocks(sbi); |
| 595 | |
Chao Yu | c200b1a | 2014-08-20 18:36:46 +0800 | [diff] [blame] | 596 | buf->f_files = sbi->total_node_count - F2FS_RESERVED_NODE_NUM; |
| 597 | buf->f_ffree = buf->f_files - valid_inode_count(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 598 | |
Jaegeuk Kim | 5a20d33 | 2013-03-03 13:58:05 +0900 | [diff] [blame] | 599 | buf->f_namelen = F2FS_NAME_LEN; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 600 | buf->f_fsid.val[0] = (u32)id; |
| 601 | buf->f_fsid.val[1] = (u32)(id >> 32); |
| 602 | |
| 603 | return 0; |
| 604 | } |
| 605 | |
| 606 | static int f2fs_show_options(struct seq_file *seq, struct dentry *root) |
| 607 | { |
| 608 | struct f2fs_sb_info *sbi = F2FS_SB(root->d_sb); |
| 609 | |
Gu Zheng | b270ad6 | 2014-04-11 17:49:55 +0800 | [diff] [blame] | 610 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, BG_GC)) |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 611 | seq_printf(seq, ",background_gc=%s", "on"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 612 | else |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 613 | seq_printf(seq, ",background_gc=%s", "off"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 614 | if (test_opt(sbi, DISABLE_ROLL_FORWARD)) |
| 615 | seq_puts(seq, ",disable_roll_forward"); |
| 616 | if (test_opt(sbi, DISCARD)) |
| 617 | seq_puts(seq, ",discard"); |
| 618 | if (test_opt(sbi, NOHEAP)) |
| 619 | seq_puts(seq, ",no_heap_alloc"); |
| 620 | #ifdef CONFIG_F2FS_FS_XATTR |
| 621 | if (test_opt(sbi, XATTR_USER)) |
| 622 | seq_puts(seq, ",user_xattr"); |
| 623 | else |
| 624 | seq_puts(seq, ",nouser_xattr"); |
Jaegeuk Kim | 444c580 | 2013-08-08 15:16:22 +0900 | [diff] [blame] | 625 | if (test_opt(sbi, INLINE_XATTR)) |
| 626 | seq_puts(seq, ",inline_xattr"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 627 | #endif |
| 628 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 629 | if (test_opt(sbi, POSIX_ACL)) |
| 630 | seq_puts(seq, ",acl"); |
| 631 | else |
| 632 | seq_puts(seq, ",noacl"); |
| 633 | #endif |
| 634 | if (test_opt(sbi, DISABLE_EXT_IDENTIFY)) |
Alejandro Martinez Ruiz | aa43507 | 2013-01-25 19:08:59 +0100 | [diff] [blame] | 635 | seq_puts(seq, ",disable_ext_identify"); |
Huajun Li | 8274de7 | 2013-11-10 23:13:17 +0800 | [diff] [blame] | 636 | if (test_opt(sbi, INLINE_DATA)) |
| 637 | seq_puts(seq, ",inline_data"); |
Wanpeng Li | 7534279 | 2015-03-24 10:20:27 +0800 | [diff] [blame] | 638 | else |
| 639 | seq_puts(seq, ",noinline_data"); |
Chao Yu | 5efd3c6 | 2014-09-24 18:16:13 +0800 | [diff] [blame] | 640 | if (test_opt(sbi, INLINE_DENTRY)) |
| 641 | seq_puts(seq, ",inline_dentry"); |
Gu Zheng | b270ad6 | 2014-04-11 17:49:55 +0800 | [diff] [blame] | 642 | if (!f2fs_readonly(sbi->sb) && test_opt(sbi, FLUSH_MERGE)) |
Jaegeuk Kim | 6b4afdd | 2014-04-02 15:34:36 +0900 | [diff] [blame] | 643 | seq_puts(seq, ",flush_merge"); |
Jaegeuk Kim | 0f7b2ab | 2014-07-23 09:57:31 -0700 | [diff] [blame] | 644 | if (test_opt(sbi, NOBARRIER)) |
| 645 | seq_puts(seq, ",nobarrier"); |
Jaegeuk Kim | d5053a34 | 2014-10-30 22:47:03 -0700 | [diff] [blame] | 646 | if (test_opt(sbi, FASTBOOT)) |
| 647 | seq_puts(seq, ",fastboot"); |
Chao Yu | 8967215 | 2015-02-05 17:55:51 +0800 | [diff] [blame] | 648 | if (test_opt(sbi, EXTENT_CACHE)) |
| 649 | seq_puts(seq, ",extent_cache"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 650 | seq_printf(seq, ",active_logs=%u", sbi->active_logs); |
| 651 | |
| 652 | return 0; |
| 653 | } |
| 654 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 655 | static int segment_info_seq_show(struct seq_file *seq, void *offset) |
| 656 | { |
| 657 | struct super_block *sb = seq->private; |
| 658 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 659 | unsigned int total_segs = |
| 660 | le32_to_cpu(sbi->raw_super->segment_count_main); |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 661 | int i; |
| 662 | |
Chao Yu | 90aa6dc | 2014-03-17 10:31:06 +0800 | [diff] [blame] | 663 | seq_puts(seq, "format: segment_type|valid_blocks\n" |
| 664 | "segment_type(0:HD, 1:WD, 2:CD, 3:HN, 4:WN, 5:CN)\n"); |
| 665 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 666 | for (i = 0; i < total_segs; i++) { |
Chao Yu | 90aa6dc | 2014-03-17 10:31:06 +0800 | [diff] [blame] | 667 | struct seg_entry *se = get_seg_entry(sbi, i); |
| 668 | |
| 669 | if ((i % 10) == 0) |
| 670 | seq_printf(seq, "%-5d", i); |
| 671 | seq_printf(seq, "%d|%-3u", se->type, |
| 672 | get_valid_blocks(sbi, i, 1)); |
Gu Zheng | 46c0436 | 2014-03-07 18:43:33 +0800 | [diff] [blame] | 673 | if ((i % 10) == 9 || i == (total_segs - 1)) |
| 674 | seq_putc(seq, '\n'); |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 675 | else |
Gu Zheng | 46c0436 | 2014-03-07 18:43:33 +0800 | [diff] [blame] | 676 | seq_putc(seq, ' '); |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 677 | } |
Gu Zheng | 46c0436 | 2014-03-07 18:43:33 +0800 | [diff] [blame] | 678 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 679 | return 0; |
| 680 | } |
| 681 | |
| 682 | static int segment_info_open_fs(struct inode *inode, struct file *file) |
| 683 | { |
| 684 | return single_open(file, segment_info_seq_show, PDE_DATA(inode)); |
| 685 | } |
| 686 | |
| 687 | static const struct file_operations f2fs_seq_segment_info_fops = { |
| 688 | .owner = THIS_MODULE, |
| 689 | .open = segment_info_open_fs, |
| 690 | .read = seq_read, |
| 691 | .llseek = seq_lseek, |
| 692 | .release = single_release, |
| 693 | }; |
| 694 | |
Yunlei He | 498c5e9 | 2015-05-07 18:11:37 +0800 | [diff] [blame] | 695 | static void default_options(struct f2fs_sb_info *sbi) |
| 696 | { |
| 697 | /* init some FS parameters */ |
| 698 | sbi->active_logs = NR_CURSEG_TYPE; |
| 699 | |
| 700 | set_opt(sbi, BG_GC); |
| 701 | set_opt(sbi, INLINE_DATA); |
| 702 | |
| 703 | #ifdef CONFIG_F2FS_FS_XATTR |
| 704 | set_opt(sbi, XATTR_USER); |
| 705 | #endif |
| 706 | #ifdef CONFIG_F2FS_FS_POSIX_ACL |
| 707 | set_opt(sbi, POSIX_ACL); |
| 708 | #endif |
| 709 | } |
| 710 | |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 711 | static int f2fs_remount(struct super_block *sb, int *flags, char *data) |
| 712 | { |
| 713 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 714 | struct f2fs_mount_info org_mount_opt; |
| 715 | int err, active_logs; |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 716 | bool need_restart_gc = false; |
| 717 | bool need_stop_gc = false; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 718 | |
Theodore Ts'o | 02b9984 | 2014-03-13 10:14:33 -0400 | [diff] [blame] | 719 | sync_filesystem(sb); |
| 720 | |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 721 | /* |
| 722 | * Save the old mount options in case we |
| 723 | * need to restore them. |
| 724 | */ |
| 725 | org_mount_opt = sbi->mount_opt; |
| 726 | active_logs = sbi->active_logs; |
| 727 | |
Chao Yu | 26666c8 | 2014-09-15 18:04:44 +0800 | [diff] [blame] | 728 | sbi->mount_opt.opt = 0; |
Yunlei He | 498c5e9 | 2015-05-07 18:11:37 +0800 | [diff] [blame] | 729 | default_options(sbi); |
Chao Yu | 26666c8 | 2014-09-15 18:04:44 +0800 | [diff] [blame] | 730 | |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 731 | /* parse mount options */ |
| 732 | err = parse_options(sb, data); |
| 733 | if (err) |
| 734 | goto restore_opts; |
| 735 | |
| 736 | /* |
| 737 | * Previous and new state of filesystem is RO, |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 738 | * so skip checking GC and FLUSH_MERGE conditions. |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 739 | */ |
Chao Yu | 6b2920a | 2014-07-07 11:21:59 +0800 | [diff] [blame] | 740 | if (f2fs_readonly(sb) && (*flags & MS_RDONLY)) |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 741 | goto skip; |
| 742 | |
| 743 | /* |
| 744 | * We stop the GC thread if FS is mounted as RO |
| 745 | * or if background_gc = off is passed in mount |
| 746 | * option. Also sync the filesystem. |
| 747 | */ |
| 748 | if ((*flags & MS_RDONLY) || !test_opt(sbi, BG_GC)) { |
| 749 | if (sbi->gc_thread) { |
| 750 | stop_gc_thread(sbi); |
| 751 | f2fs_sync_fs(sb, 1); |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 752 | need_restart_gc = true; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 753 | } |
Chao Yu | aba291b | 2014-11-18 11:17:20 +0800 | [diff] [blame] | 754 | } else if (!sbi->gc_thread) { |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 755 | err = start_gc_thread(sbi); |
| 756 | if (err) |
| 757 | goto restore_opts; |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 758 | need_stop_gc = true; |
| 759 | } |
| 760 | |
| 761 | /* |
| 762 | * We stop issue flush thread if FS is mounted as RO |
| 763 | * or if flush_merge is not passed in mount option. |
| 764 | */ |
| 765 | if ((*flags & MS_RDONLY) || !test_opt(sbi, FLUSH_MERGE)) { |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 766 | destroy_flush_cmd_control(sbi); |
Chao Yu | aba291b | 2014-11-18 11:17:20 +0800 | [diff] [blame] | 767 | } else if (!SM_I(sbi)->cmd_control_info) { |
Gu Zheng | 2163d19 | 2014-04-27 14:21:33 +0800 | [diff] [blame] | 768 | err = create_flush_cmd_control(sbi); |
| 769 | if (err) |
Gu Zheng | a688b9d9e | 2014-04-27 14:21:21 +0800 | [diff] [blame] | 770 | goto restore_gc; |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 771 | } |
| 772 | skip: |
| 773 | /* Update the POSIXACL Flag */ |
| 774 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
| 775 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
| 776 | return 0; |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 777 | restore_gc: |
| 778 | if (need_restart_gc) { |
| 779 | if (start_gc_thread(sbi)) |
| 780 | f2fs_msg(sbi->sb, KERN_WARNING, |
arter97 | e1c4204 | 2014-08-06 23:22:50 +0900 | [diff] [blame] | 781 | "background gc thread has stopped"); |
Gu Zheng | 876dc59 | 2014-04-11 17:50:00 +0800 | [diff] [blame] | 782 | } else if (need_stop_gc) { |
| 783 | stop_gc_thread(sbi); |
| 784 | } |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 785 | restore_opts: |
| 786 | sbi->mount_opt = org_mount_opt; |
| 787 | sbi->active_logs = active_logs; |
| 788 | return err; |
| 789 | } |
| 790 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 791 | static struct super_operations f2fs_sops = { |
| 792 | .alloc_inode = f2fs_alloc_inode, |
Jaegeuk Kim | 531ad7d | 2013-04-30 11:33:27 +0900 | [diff] [blame] | 793 | .drop_inode = f2fs_drop_inode, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 794 | .destroy_inode = f2fs_destroy_inode, |
| 795 | .write_inode = f2fs_write_inode, |
Jaegeuk Kim | b378387 | 2013-06-10 09:17:01 +0900 | [diff] [blame] | 796 | .dirty_inode = f2fs_dirty_inode, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 797 | .show_options = f2fs_show_options, |
| 798 | .evict_inode = f2fs_evict_inode, |
| 799 | .put_super = f2fs_put_super, |
| 800 | .sync_fs = f2fs_sync_fs, |
Changman Lee | d6212a5 | 2013-01-29 18:30:07 +0900 | [diff] [blame] | 801 | .freeze_fs = f2fs_freeze, |
| 802 | .unfreeze_fs = f2fs_unfreeze, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 803 | .statfs = f2fs_statfs, |
Namjae Jeon | 696c018 | 2013-06-16 09:48:48 +0900 | [diff] [blame] | 804 | .remount_fs = f2fs_remount, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 805 | }; |
| 806 | |
| 807 | static struct inode *f2fs_nfs_get_inode(struct super_block *sb, |
| 808 | u64 ino, u32 generation) |
| 809 | { |
| 810 | struct f2fs_sb_info *sbi = F2FS_SB(sb); |
| 811 | struct inode *inode; |
| 812 | |
Chao Yu | d6b7d4b | 2014-06-12 13:23:41 +0800 | [diff] [blame] | 813 | if (check_nid_range(sbi, ino)) |
Chao Yu | 910bb12 | 2014-03-12 17:08:36 +0800 | [diff] [blame] | 814 | return ERR_PTR(-ESTALE); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 815 | |
| 816 | /* |
| 817 | * f2fs_iget isn't quite right if the inode is currently unallocated! |
| 818 | * However f2fs_iget currently does appropriate checks to handle stale |
| 819 | * inodes so everything is OK. |
| 820 | */ |
| 821 | inode = f2fs_iget(sb, ino); |
| 822 | if (IS_ERR(inode)) |
| 823 | return ERR_CAST(inode); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 824 | if (unlikely(generation && inode->i_generation != generation)) { |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 825 | /* we didn't find the right inode.. */ |
| 826 | iput(inode); |
| 827 | return ERR_PTR(-ESTALE); |
| 828 | } |
| 829 | return inode; |
| 830 | } |
| 831 | |
| 832 | static struct dentry *f2fs_fh_to_dentry(struct super_block *sb, struct fid *fid, |
| 833 | int fh_len, int fh_type) |
| 834 | { |
| 835 | return generic_fh_to_dentry(sb, fid, fh_len, fh_type, |
| 836 | f2fs_nfs_get_inode); |
| 837 | } |
| 838 | |
| 839 | static struct dentry *f2fs_fh_to_parent(struct super_block *sb, struct fid *fid, |
| 840 | int fh_len, int fh_type) |
| 841 | { |
| 842 | return generic_fh_to_parent(sb, fid, fh_len, fh_type, |
| 843 | f2fs_nfs_get_inode); |
| 844 | } |
| 845 | |
| 846 | static const struct export_operations f2fs_export_ops = { |
| 847 | .fh_to_dentry = f2fs_fh_to_dentry, |
| 848 | .fh_to_parent = f2fs_fh_to_parent, |
| 849 | .get_parent = f2fs_get_parent, |
| 850 | }; |
| 851 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 852 | static loff_t max_file_size(unsigned bits) |
| 853 | { |
Jaegeuk Kim | de93653 | 2013-08-12 21:08:03 +0900 | [diff] [blame] | 854 | loff_t result = (DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 855 | loff_t leaf_count = ADDRS_PER_BLOCK; |
| 856 | |
| 857 | /* two direct node blocks */ |
| 858 | result += (leaf_count * 2); |
| 859 | |
| 860 | /* two indirect node blocks */ |
| 861 | leaf_count *= NIDS_PER_BLOCK; |
| 862 | result += (leaf_count * 2); |
| 863 | |
| 864 | /* one double indirect node block */ |
| 865 | leaf_count *= NIDS_PER_BLOCK; |
| 866 | result += leaf_count; |
| 867 | |
| 868 | result <<= bits; |
| 869 | return result; |
| 870 | } |
| 871 | |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 872 | static int sanity_check_raw_super(struct super_block *sb, |
| 873 | struct f2fs_super_block *raw_super) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 874 | { |
| 875 | unsigned int blocksize; |
| 876 | |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 877 | if (F2FS_SUPER_MAGIC != le32_to_cpu(raw_super->magic)) { |
| 878 | f2fs_msg(sb, KERN_INFO, |
| 879 | "Magic Mismatch, valid(0x%x) - read(0x%x)", |
| 880 | F2FS_SUPER_MAGIC, le32_to_cpu(raw_super->magic)); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 881 | return 1; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 882 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 883 | |
majianpeng | 5c9b469 | 2013-02-01 19:07:57 +0800 | [diff] [blame] | 884 | /* Currently, support only 4KB page cache size */ |
| 885 | if (F2FS_BLKSIZE != PAGE_CACHE_SIZE) { |
| 886 | f2fs_msg(sb, KERN_INFO, |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 887 | "Invalid page_cache_size (%lu), supports only 4KB\n", |
majianpeng | 5c9b469 | 2013-02-01 19:07:57 +0800 | [diff] [blame] | 888 | PAGE_CACHE_SIZE); |
| 889 | return 1; |
| 890 | } |
| 891 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 892 | /* Currently, support only 4KB block size */ |
| 893 | blocksize = 1 << le32_to_cpu(raw_super->log_blocksize); |
majianpeng | 5c9b469 | 2013-02-01 19:07:57 +0800 | [diff] [blame] | 894 | if (blocksize != F2FS_BLKSIZE) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 895 | f2fs_msg(sb, KERN_INFO, |
| 896 | "Invalid blocksize (%u), supports only 4KB\n", |
| 897 | blocksize); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 898 | return 1; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 899 | } |
majianpeng | 5c9b469 | 2013-02-01 19:07:57 +0800 | [diff] [blame] | 900 | |
Chao Yu | 55cf9cb | 2014-09-15 18:01:10 +0800 | [diff] [blame] | 901 | /* Currently, support 512/1024/2048/4096 bytes sector size */ |
| 902 | if (le32_to_cpu(raw_super->log_sectorsize) > |
| 903 | F2FS_MAX_LOG_SECTOR_SIZE || |
| 904 | le32_to_cpu(raw_super->log_sectorsize) < |
| 905 | F2FS_MIN_LOG_SECTOR_SIZE) { |
| 906 | f2fs_msg(sb, KERN_INFO, "Invalid log sectorsize (%u)", |
| 907 | le32_to_cpu(raw_super->log_sectorsize)); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 908 | return 1; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 909 | } |
Chao Yu | 55cf9cb | 2014-09-15 18:01:10 +0800 | [diff] [blame] | 910 | if (le32_to_cpu(raw_super->log_sectors_per_block) + |
| 911 | le32_to_cpu(raw_super->log_sectorsize) != |
| 912 | F2FS_MAX_LOG_SECTOR_SIZE) { |
| 913 | f2fs_msg(sb, KERN_INFO, |
| 914 | "Invalid log sectors per block(%u) log sectorsize(%u)", |
| 915 | le32_to_cpu(raw_super->log_sectors_per_block), |
| 916 | le32_to_cpu(raw_super->log_sectorsize)); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 917 | return 1; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 918 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 919 | return 0; |
| 920 | } |
| 921 | |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 922 | static int sanity_check_ckpt(struct f2fs_sb_info *sbi) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 923 | { |
| 924 | unsigned int total, fsmeta; |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 925 | struct f2fs_super_block *raw_super = F2FS_RAW_SUPER(sbi); |
| 926 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 927 | |
| 928 | total = le32_to_cpu(raw_super->segment_count); |
| 929 | fsmeta = le32_to_cpu(raw_super->segment_count_ckpt); |
| 930 | fsmeta += le32_to_cpu(raw_super->segment_count_sit); |
| 931 | fsmeta += le32_to_cpu(raw_super->segment_count_nat); |
| 932 | fsmeta += le32_to_cpu(ckpt->rsvd_segment_count); |
| 933 | fsmeta += le32_to_cpu(raw_super->segment_count_ssa); |
| 934 | |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 935 | if (unlikely(fsmeta >= total)) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 936 | return 1; |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 937 | |
Jaegeuk Kim | 1e968fd | 2014-08-11 16:49:25 -0700 | [diff] [blame] | 938 | if (unlikely(f2fs_cp_error(sbi))) { |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 939 | f2fs_msg(sbi->sb, KERN_ERR, "A bug case: need to run fsck"); |
| 940 | return 1; |
| 941 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 942 | return 0; |
| 943 | } |
| 944 | |
| 945 | static void init_sb_info(struct f2fs_sb_info *sbi) |
| 946 | { |
| 947 | struct f2fs_super_block *raw_super = sbi->raw_super; |
| 948 | int i; |
| 949 | |
| 950 | sbi->log_sectors_per_block = |
| 951 | le32_to_cpu(raw_super->log_sectors_per_block); |
| 952 | sbi->log_blocksize = le32_to_cpu(raw_super->log_blocksize); |
| 953 | sbi->blocksize = 1 << sbi->log_blocksize; |
| 954 | sbi->log_blocks_per_seg = le32_to_cpu(raw_super->log_blocks_per_seg); |
| 955 | sbi->blocks_per_seg = 1 << sbi->log_blocks_per_seg; |
| 956 | sbi->segs_per_sec = le32_to_cpu(raw_super->segs_per_sec); |
| 957 | sbi->secs_per_zone = le32_to_cpu(raw_super->secs_per_zone); |
| 958 | sbi->total_sections = le32_to_cpu(raw_super->section_count); |
| 959 | sbi->total_node_count = |
| 960 | (le32_to_cpu(raw_super->segment_count_nat) / 2) |
| 961 | * sbi->blocks_per_seg * NAT_ENTRY_PER_BLOCK; |
| 962 | sbi->root_ino_num = le32_to_cpu(raw_super->root_ino); |
| 963 | sbi->node_ino_num = le32_to_cpu(raw_super->node_ino); |
| 964 | sbi->meta_ino_num = le32_to_cpu(raw_super->meta_ino); |
Jaegeuk Kim | 5ec4e49 | 2013-03-31 13:26:03 +0900 | [diff] [blame] | 965 | sbi->cur_victim_sec = NULL_SECNO; |
Jaegeuk Kim | b1c57c1 | 2014-01-08 13:45:08 +0900 | [diff] [blame] | 966 | sbi->max_victim_search = DEF_MAX_VICTIM_SEARCH; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 967 | |
| 968 | for (i = 0; i < NR_COUNT_TYPE; i++) |
| 969 | atomic_set(&sbi->nr_pages[i], 0); |
Jaegeuk Kim | ab9fa66 | 2014-02-27 20:09:05 +0900 | [diff] [blame] | 970 | |
| 971 | sbi->dir_level = DEF_DIR_LEVEL; |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 972 | clear_sbi_flag(sbi, SBI_NEED_FSCK); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 973 | } |
| 974 | |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 975 | /* |
| 976 | * Read f2fs raw super block. |
| 977 | * Because we have two copies of super block, so read the first one at first, |
| 978 | * if the first one is invalid, move to read the second one. |
| 979 | */ |
| 980 | static int read_raw_super_block(struct super_block *sb, |
| 981 | struct f2fs_super_block **raw_super, |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 982 | struct buffer_head **raw_super_buf, |
| 983 | int *recovery) |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 984 | { |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 985 | int block = 0; |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 986 | struct buffer_head *buffer; |
| 987 | struct f2fs_super_block *super; |
| 988 | int err = 0; |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 989 | |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 990 | retry: |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 991 | buffer = sb_bread(sb, block); |
| 992 | if (!buffer) { |
| 993 | *recovery = 1; |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 994 | f2fs_msg(sb, KERN_ERR, "Unable to read %dth superblock", |
| 995 | block + 1); |
| 996 | if (block == 0) { |
| 997 | block++; |
| 998 | goto retry; |
| 999 | } else { |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1000 | err = -EIO; |
| 1001 | goto out; |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 1002 | } |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 1003 | } |
| 1004 | |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1005 | super = (struct f2fs_super_block *) |
| 1006 | ((char *)(buffer)->b_data + F2FS_SUPER_OFFSET); |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 1007 | |
| 1008 | /* sanity checking of raw super */ |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1009 | if (sanity_check_raw_super(sb, super)) { |
| 1010 | brelse(buffer); |
| 1011 | *recovery = 1; |
Chris Fries | 6c311ec | 2014-01-17 14:44:39 -0600 | [diff] [blame] | 1012 | f2fs_msg(sb, KERN_ERR, |
| 1013 | "Can't find valid F2FS filesystem in %dth superblock", |
| 1014 | block + 1); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1015 | if (block == 0) { |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 1016 | block++; |
| 1017 | goto retry; |
| 1018 | } else { |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1019 | err = -EINVAL; |
| 1020 | goto out; |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 1021 | } |
| 1022 | } |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 1023 | |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1024 | if (!*raw_super) { |
| 1025 | *raw_super_buf = buffer; |
| 1026 | *raw_super = super; |
| 1027 | } else { |
| 1028 | /* already have a valid superblock */ |
| 1029 | brelse(buffer); |
| 1030 | } |
| 1031 | |
| 1032 | /* check the validity of the second superblock */ |
| 1033 | if (block == 0) { |
| 1034 | block++; |
| 1035 | goto retry; |
| 1036 | } |
| 1037 | |
| 1038 | out: |
| 1039 | /* No valid superblock */ |
| 1040 | if (!*raw_super) |
| 1041 | return err; |
| 1042 | |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 1043 | return 0; |
majianpeng | 14d7e9d | 2013-02-01 19:07:03 +0800 | [diff] [blame] | 1044 | } |
| 1045 | |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1046 | int f2fs_commit_super(struct f2fs_sb_info *sbi, bool recover) |
Jaegeuk Kim | 26d815ad | 2015-04-20 18:49:51 -0700 | [diff] [blame] | 1047 | { |
| 1048 | struct buffer_head *sbh = sbi->raw_super_buf; |
| 1049 | sector_t block = sbh->b_blocknr; |
| 1050 | int err; |
| 1051 | |
| 1052 | /* write back-up superblock first */ |
| 1053 | sbh->b_blocknr = block ? 0 : 1; |
| 1054 | mark_buffer_dirty(sbh); |
| 1055 | err = sync_dirty_buffer(sbh); |
| 1056 | |
| 1057 | sbh->b_blocknr = block; |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1058 | |
| 1059 | /* if we are in recovery path, skip writing valid superblock */ |
| 1060 | if (recover || err) |
Jaegeuk Kim | 26d815ad | 2015-04-20 18:49:51 -0700 | [diff] [blame] | 1061 | goto out; |
| 1062 | |
| 1063 | /* write current valid superblock */ |
| 1064 | mark_buffer_dirty(sbh); |
| 1065 | err = sync_dirty_buffer(sbh); |
| 1066 | out: |
| 1067 | clear_buffer_write_io_error(sbh); |
| 1068 | set_buffer_uptodate(sbh); |
| 1069 | return err; |
| 1070 | } |
| 1071 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1072 | static int f2fs_fill_super(struct super_block *sb, void *data, int silent) |
| 1073 | { |
| 1074 | struct f2fs_sb_info *sbi; |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1075 | struct f2fs_super_block *raw_super; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1076 | struct buffer_head *raw_super_buf; |
| 1077 | struct inode *root; |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1078 | long err; |
Chao Yu | 2adc350 | 2015-03-16 21:08:44 +0800 | [diff] [blame] | 1079 | bool retry = true, need_fsck = false; |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1080 | char *options = NULL; |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1081 | int recovery, i; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1082 | |
Jaegeuk Kim | ed2e621 | 2014-08-08 15:37:41 -0700 | [diff] [blame] | 1083 | try_onemore: |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1084 | err = -EINVAL; |
| 1085 | raw_super = NULL; |
| 1086 | raw_super_buf = NULL; |
| 1087 | recovery = 0; |
| 1088 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1089 | /* allocate memory for f2fs-specific super block info */ |
| 1090 | sbi = kzalloc(sizeof(struct f2fs_sb_info), GFP_KERNEL); |
| 1091 | if (!sbi) |
| 1092 | return -ENOMEM; |
| 1093 | |
Namjae Jeon | ff9234a | 2013-01-12 14:41:13 +0900 | [diff] [blame] | 1094 | /* set a block size */ |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1095 | if (unlikely(!sb_set_blocksize(sb, F2FS_BLKSIZE))) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1096 | f2fs_msg(sb, KERN_ERR, "unable to set blocksize"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1097 | goto free_sbi; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1098 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1099 | |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1100 | err = read_raw_super_block(sb, &raw_super, &raw_super_buf, &recovery); |
Gu Zheng | 9076a75 | 2013-10-14 18:47:11 +0800 | [diff] [blame] | 1101 | if (err) |
| 1102 | goto free_sbi; |
| 1103 | |
Gu Zheng | 5fb0837 | 2013-06-07 14:16:53 +0800 | [diff] [blame] | 1104 | sb->s_fs_info = sbi; |
Yunlei He | 498c5e9 | 2015-05-07 18:11:37 +0800 | [diff] [blame] | 1105 | default_options(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1106 | /* parse mount options */ |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1107 | options = kstrdup((const char *)data, GFP_KERNEL); |
| 1108 | if (data && !options) { |
| 1109 | err = -ENOMEM; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1110 | goto free_sb_buf; |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1111 | } |
| 1112 | |
| 1113 | err = parse_options(sb, options); |
| 1114 | if (err) |
| 1115 | goto free_options; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1116 | |
Jaegeuk Kim | 25ca923 | 2012-11-28 16:12:41 +0900 | [diff] [blame] | 1117 | sb->s_maxbytes = max_file_size(le32_to_cpu(raw_super->log_blocksize)); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1118 | sb->s_max_links = F2FS_LINK_MAX; |
| 1119 | get_random_bytes(&sbi->s_next_generation, sizeof(u32)); |
| 1120 | |
| 1121 | sb->s_op = &f2fs_sops; |
| 1122 | sb->s_xattr = f2fs_xattr_handlers; |
| 1123 | sb->s_export_op = &f2fs_export_ops; |
| 1124 | sb->s_magic = F2FS_SUPER_MAGIC; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1125 | sb->s_time_gran = 1; |
| 1126 | sb->s_flags = (sb->s_flags & ~MS_POSIXACL) | |
| 1127 | (test_opt(sbi, POSIX_ACL) ? MS_POSIXACL : 0); |
| 1128 | memcpy(sb->s_uuid, raw_super->uuid, sizeof(raw_super->uuid)); |
| 1129 | |
| 1130 | /* init f2fs-specific super block info */ |
| 1131 | sbi->sb = sb; |
| 1132 | sbi->raw_super = raw_super; |
| 1133 | sbi->raw_super_buf = raw_super_buf; |
| 1134 | mutex_init(&sbi->gc_mutex); |
Jaegeuk Kim | 5463e7c | 2015-04-21 10:40:54 -0700 | [diff] [blame] | 1135 | mutex_init(&sbi->writepages); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1136 | mutex_init(&sbi->cp_mutex); |
Chao Yu | b3582c6 | 2014-07-03 18:58:39 +0800 | [diff] [blame] | 1137 | init_rwsem(&sbi->node_write); |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 1138 | clear_sbi_flag(sbi, SBI_POR_DOING); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1139 | spin_lock_init(&sbi->stat_lock); |
Jaegeuk Kim | 971767c | 2013-11-18 17:16:17 +0900 | [diff] [blame] | 1140 | |
Chao Yu | df0f8dc | 2014-03-22 14:57:23 +0800 | [diff] [blame] | 1141 | init_rwsem(&sbi->read_io.io_rwsem); |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1142 | sbi->read_io.sbi = sbi; |
| 1143 | sbi->read_io.bio = NULL; |
| 1144 | for (i = 0; i < NR_PAGE_TYPE; i++) { |
Chao Yu | df0f8dc | 2014-03-22 14:57:23 +0800 | [diff] [blame] | 1145 | init_rwsem(&sbi->write_io[i].io_rwsem); |
Jaegeuk Kim | 458e619 | 2013-12-11 13:54:01 +0900 | [diff] [blame] | 1146 | sbi->write_io[i].sbi = sbi; |
| 1147 | sbi->write_io[i].bio = NULL; |
| 1148 | } |
Jaegeuk Kim | 971767c | 2013-11-18 17:16:17 +0900 | [diff] [blame] | 1149 | |
Gu Zheng | e479556 | 2013-09-27 18:08:30 +0800 | [diff] [blame] | 1150 | init_rwsem(&sbi->cp_rwsem); |
Changman Lee | fb51b5e | 2013-11-07 12:48:25 +0900 | [diff] [blame] | 1151 | init_waitqueue_head(&sbi->cp_wait); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1152 | init_sb_info(sbi); |
| 1153 | |
| 1154 | /* get an inode for meta space */ |
| 1155 | sbi->meta_inode = f2fs_iget(sb, F2FS_META_INO(sbi)); |
| 1156 | if (IS_ERR(sbi->meta_inode)) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1157 | f2fs_msg(sb, KERN_ERR, "Failed to read F2FS meta data inode"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1158 | err = PTR_ERR(sbi->meta_inode); |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1159 | goto free_options; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1160 | } |
| 1161 | |
| 1162 | err = get_valid_checkpoint(sbi); |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1163 | if (err) { |
| 1164 | f2fs_msg(sb, KERN_ERR, "Failed to get valid F2FS checkpoint"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1165 | goto free_meta_inode; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1166 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1167 | |
| 1168 | /* sanity checking of checkpoint */ |
| 1169 | err = -EINVAL; |
Jaegeuk Kim | 577e349 | 2013-01-24 19:56:11 +0900 | [diff] [blame] | 1170 | if (sanity_check_ckpt(sbi)) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1171 | f2fs_msg(sb, KERN_ERR, "Invalid F2FS checkpoint"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1172 | goto free_cp; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1173 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1174 | |
| 1175 | sbi->total_valid_node_count = |
| 1176 | le32_to_cpu(sbi->ckpt->valid_node_count); |
| 1177 | sbi->total_valid_inode_count = |
| 1178 | le32_to_cpu(sbi->ckpt->valid_inode_count); |
| 1179 | sbi->user_block_count = le64_to_cpu(sbi->ckpt->user_block_count); |
| 1180 | sbi->total_valid_block_count = |
| 1181 | le64_to_cpu(sbi->ckpt->valid_block_count); |
| 1182 | sbi->last_valid_block_count = sbi->total_valid_block_count; |
| 1183 | sbi->alloc_valid_block_count = 0; |
| 1184 | INIT_LIST_HEAD(&sbi->dir_inode_list); |
| 1185 | spin_lock_init(&sbi->dir_inode_lock); |
| 1186 | |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 1187 | init_extent_cache_info(sbi); |
| 1188 | |
Jaegeuk Kim | 6451e04 | 2014-07-25 15:47:17 -0700 | [diff] [blame] | 1189 | init_ino_entry_info(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1190 | |
| 1191 | /* setup f2fs internal modules */ |
| 1192 | err = build_segment_manager(sbi); |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1193 | if (err) { |
| 1194 | f2fs_msg(sb, KERN_ERR, |
| 1195 | "Failed to initialize F2FS segment manager"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1196 | goto free_sm; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1197 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1198 | err = build_node_manager(sbi); |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1199 | if (err) { |
| 1200 | f2fs_msg(sb, KERN_ERR, |
| 1201 | "Failed to initialize F2FS node manager"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1202 | goto free_nm; |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1203 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1204 | |
| 1205 | build_gc_manager(sbi); |
| 1206 | |
| 1207 | /* get an inode for node space */ |
| 1208 | sbi->node_inode = f2fs_iget(sb, F2FS_NODE_INO(sbi)); |
| 1209 | if (IS_ERR(sbi->node_inode)) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1210 | f2fs_msg(sb, KERN_ERR, "Failed to read node inode"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1211 | err = PTR_ERR(sbi->node_inode); |
| 1212 | goto free_nm; |
| 1213 | } |
| 1214 | |
| 1215 | /* if there are nt orphan nodes free them */ |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 1216 | recover_orphan_inodes(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1217 | |
| 1218 | /* read root inode and dentry */ |
| 1219 | root = f2fs_iget(sb, F2FS_ROOT_INO(sbi)); |
| 1220 | if (IS_ERR(root)) { |
Namjae Jeon | a07ef78 | 2012-12-30 14:52:05 +0900 | [diff] [blame] | 1221 | f2fs_msg(sb, KERN_ERR, "Failed to read root inode"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1222 | err = PTR_ERR(root); |
| 1223 | goto free_node_inode; |
| 1224 | } |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 1225 | if (!S_ISDIR(root->i_mode) || !root->i_blocks || !root->i_size) { |
Chao Yu | 9d84795 | 2014-07-25 12:55:09 +0800 | [diff] [blame] | 1226 | iput(root); |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 1227 | err = -EINVAL; |
Chao Yu | 9d84795 | 2014-07-25 12:55:09 +0800 | [diff] [blame] | 1228 | goto free_node_inode; |
Chao Yu | 8f99a94 | 2013-11-28 15:43:43 +0800 | [diff] [blame] | 1229 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1230 | |
| 1231 | sb->s_root = d_make_root(root); /* allocate root dentry */ |
| 1232 | if (!sb->s_root) { |
| 1233 | err = -ENOMEM; |
| 1234 | goto free_root_inode; |
| 1235 | } |
| 1236 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1237 | err = f2fs_build_stats(sbi); |
| 1238 | if (err) |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1239 | goto free_root_inode; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1240 | |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 1241 | if (f2fs_proc_root) |
| 1242 | sbi->s_proc = proc_mkdir(sb->s_id, f2fs_proc_root); |
| 1243 | |
| 1244 | if (sbi->s_proc) |
| 1245 | proc_create_data("segment_info", S_IRUGO, sbi->s_proc, |
| 1246 | &f2fs_seq_segment_info_fops, sb); |
| 1247 | |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 1248 | sbi->s_kobj.kset = f2fs_kset; |
| 1249 | init_completion(&sbi->s_kobj_unregister); |
| 1250 | err = kobject_init_and_add(&sbi->s_kobj, &f2fs_ktype, NULL, |
| 1251 | "%s", sb->s_id); |
| 1252 | if (err) |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1253 | goto free_proc; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 1254 | |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1255 | /* recover fsynced data */ |
| 1256 | if (!test_opt(sbi, DISABLE_ROLL_FORWARD)) { |
Jaegeuk Kim | 081d78c | 2015-01-23 19:16:59 -0800 | [diff] [blame] | 1257 | /* |
| 1258 | * mount should be failed, when device has readonly mode, and |
| 1259 | * previous checkpoint was not done by clean system shutdown. |
| 1260 | */ |
| 1261 | if (bdev_read_only(sb->s_bdev) && |
| 1262 | !is_set_ckpt_flags(sbi->ckpt, CP_UMOUNT_FLAG)) { |
| 1263 | err = -EROFS; |
| 1264 | goto free_kobj; |
| 1265 | } |
Chao Yu | 2adc350 | 2015-03-16 21:08:44 +0800 | [diff] [blame] | 1266 | |
| 1267 | if (need_fsck) |
| 1268 | set_sbi_flag(sbi, SBI_NEED_FSCK); |
| 1269 | |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1270 | err = recover_fsync_data(sbi); |
Jaegeuk Kim | ed2e621 | 2014-08-08 15:37:41 -0700 | [diff] [blame] | 1271 | if (err) { |
Chao Yu | 2adc350 | 2015-03-16 21:08:44 +0800 | [diff] [blame] | 1272 | need_fsck = true; |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1273 | f2fs_msg(sb, KERN_ERR, |
| 1274 | "Cannot recover all fsync data errno=%ld", err); |
Jaegeuk Kim | ed2e621 | 2014-08-08 15:37:41 -0700 | [diff] [blame] | 1275 | goto free_kobj; |
| 1276 | } |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1277 | } |
| 1278 | |
| 1279 | /* |
| 1280 | * If filesystem is not mounted as read-only then |
| 1281 | * do start the gc_thread. |
| 1282 | */ |
Chao Yu | 6c02993 | 2014-11-18 11:16:01 +0800 | [diff] [blame] | 1283 | if (test_opt(sbi, BG_GC) && !f2fs_readonly(sb)) { |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1284 | /* After POR, we can run background GC thread.*/ |
| 1285 | err = start_gc_thread(sbi); |
| 1286 | if (err) |
| 1287 | goto free_kobj; |
| 1288 | } |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1289 | kfree(options); |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1290 | |
| 1291 | /* recover broken superblock */ |
| 1292 | if (recovery && !f2fs_readonly(sb) && !bdev_read_only(sb->s_bdev)) { |
| 1293 | f2fs_msg(sb, KERN_INFO, "Recover invalid superblock"); |
Chao Yu | c5bda1c | 2015-06-08 13:28:03 +0800 | [diff] [blame] | 1294 | f2fs_commit_super(sbi, true); |
hujianyang | da554e4 | 2015-05-21 14:42:53 +0800 | [diff] [blame] | 1295 | } |
| 1296 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1297 | return 0; |
Jaegeuk Kim | 6437d1b | 2014-02-19 18:23:32 +0900 | [diff] [blame] | 1298 | |
| 1299 | free_kobj: |
| 1300 | kobject_del(&sbi->s_kobj); |
| 1301 | free_proc: |
Chao Yu | 1d15bd2 | 2013-11-07 10:14:51 +0800 | [diff] [blame] | 1302 | if (sbi->s_proc) { |
| 1303 | remove_proc_entry("segment_info", sbi->s_proc); |
| 1304 | remove_proc_entry(sb->s_id, f2fs_proc_root); |
| 1305 | } |
| 1306 | f2fs_destroy_stats(sbi); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1307 | free_root_inode: |
| 1308 | dput(sb->s_root); |
| 1309 | sb->s_root = NULL; |
| 1310 | free_node_inode: |
| 1311 | iput(sbi->node_inode); |
| 1312 | free_nm: |
| 1313 | destroy_node_manager(sbi); |
| 1314 | free_sm: |
| 1315 | destroy_segment_manager(sbi); |
| 1316 | free_cp: |
| 1317 | kfree(sbi->ckpt); |
| 1318 | free_meta_inode: |
| 1319 | make_bad_inode(sbi->meta_inode); |
| 1320 | iput(sbi->meta_inode); |
Jaegeuk Kim | dabc4a5 | 2015-01-23 17:41:39 -0800 | [diff] [blame] | 1321 | free_options: |
| 1322 | kfree(options); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1323 | free_sb_buf: |
| 1324 | brelse(raw_super_buf); |
| 1325 | free_sbi: |
| 1326 | kfree(sbi); |
Jaegeuk Kim | ed2e621 | 2014-08-08 15:37:41 -0700 | [diff] [blame] | 1327 | |
| 1328 | /* give only one another chance */ |
| 1329 | if (retry) { |
Taehee Yoo | 9df47ba | 2015-04-13 21:48:06 +0900 | [diff] [blame] | 1330 | retry = false; |
Jaegeuk Kim | ed2e621 | 2014-08-08 15:37:41 -0700 | [diff] [blame] | 1331 | shrink_dcache_sb(sb); |
| 1332 | goto try_onemore; |
| 1333 | } |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1334 | return err; |
| 1335 | } |
| 1336 | |
| 1337 | static struct dentry *f2fs_mount(struct file_system_type *fs_type, int flags, |
| 1338 | const char *dev_name, void *data) |
| 1339 | { |
| 1340 | return mount_bdev(fs_type, flags, dev_name, data, f2fs_fill_super); |
| 1341 | } |
| 1342 | |
Jaegeuk Kim | 30a5537 | 2015-01-14 16:34:24 -0800 | [diff] [blame] | 1343 | static void kill_f2fs_super(struct super_block *sb) |
| 1344 | { |
| 1345 | if (sb->s_root) |
Chao Yu | caf0047 | 2015-01-28 17:48:42 +0800 | [diff] [blame] | 1346 | set_sbi_flag(F2FS_SB(sb), SBI_IS_CLOSE); |
Jaegeuk Kim | 30a5537 | 2015-01-14 16:34:24 -0800 | [diff] [blame] | 1347 | kill_block_super(sb); |
| 1348 | } |
| 1349 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1350 | static struct file_system_type f2fs_fs_type = { |
| 1351 | .owner = THIS_MODULE, |
| 1352 | .name = "f2fs", |
| 1353 | .mount = f2fs_mount, |
Jaegeuk Kim | 30a5537 | 2015-01-14 16:34:24 -0800 | [diff] [blame] | 1354 | .kill_sb = kill_f2fs_super, |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1355 | .fs_flags = FS_REQUIRES_DEV, |
| 1356 | }; |
Eric W. Biederman | 7f78e03 | 2013-03-02 19:39:14 -0800 | [diff] [blame] | 1357 | MODULE_ALIAS_FS("f2fs"); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1358 | |
Namjae Jeon | 6e6093a | 2013-01-17 00:08:30 +0900 | [diff] [blame] | 1359 | static int __init init_inodecache(void) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1360 | { |
| 1361 | f2fs_inode_cachep = f2fs_kmem_cache_create("f2fs_inode_cache", |
Gu Zheng | e8512d2 | 2014-03-07 18:43:28 +0800 | [diff] [blame] | 1362 | sizeof(struct f2fs_inode_info)); |
Jaegeuk Kim | 6bacf52 | 2013-12-06 15:00:58 +0900 | [diff] [blame] | 1363 | if (!f2fs_inode_cachep) |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1364 | return -ENOMEM; |
| 1365 | return 0; |
| 1366 | } |
| 1367 | |
| 1368 | static void destroy_inodecache(void) |
| 1369 | { |
| 1370 | /* |
| 1371 | * Make sure all delayed rcu free inodes are flushed before we |
| 1372 | * destroy cache. |
| 1373 | */ |
| 1374 | rcu_barrier(); |
| 1375 | kmem_cache_destroy(f2fs_inode_cachep); |
| 1376 | } |
| 1377 | |
| 1378 | static int __init init_f2fs_fs(void) |
| 1379 | { |
| 1380 | int err; |
| 1381 | |
Jaegeuk Kim | c050865 | 2015-01-07 14:07:36 -0800 | [diff] [blame] | 1382 | f2fs_build_trace_ios(); |
| 1383 | |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1384 | err = init_inodecache(); |
| 1385 | if (err) |
| 1386 | goto fail; |
| 1387 | err = create_node_manager_caches(); |
| 1388 | if (err) |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1389 | goto free_inodecache; |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 1390 | err = create_segment_manager_caches(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1391 | if (err) |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1392 | goto free_node_manager_caches; |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1393 | err = create_checkpoint_caches(); |
| 1394 | if (err) |
Chao Yu | 0629207 | 2014-12-29 15:56:18 +0800 | [diff] [blame] | 1395 | goto free_segment_manager_caches; |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 1396 | err = create_extent_cache(); |
| 1397 | if (err) |
| 1398 | goto free_checkpoint_caches; |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 1399 | f2fs_kset = kset_create_and_add("f2fs", NULL, fs_kobj); |
Wei Yongjun | 6e6b978 | 2013-08-23 08:30:20 +0800 | [diff] [blame] | 1400 | if (!f2fs_kset) { |
| 1401 | err = -ENOMEM; |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 1402 | goto free_extent_cache; |
Wei Yongjun | 6e6b978 | 2013-08-23 08:30:20 +0800 | [diff] [blame] | 1403 | } |
Jaegeuk Kim | cfc4d97 | 2015-05-15 15:37:24 -0700 | [diff] [blame] | 1404 | err = f2fs_init_crypto(); |
Namjae Jeon | 4589d25 | 2013-01-15 19:58:47 +0900 | [diff] [blame] | 1405 | if (err) |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1406 | goto free_kset; |
Jaegeuk Kim | cfc4d97 | 2015-05-15 15:37:24 -0700 | [diff] [blame] | 1407 | err = register_filesystem(&f2fs_fs_type); |
| 1408 | if (err) |
| 1409 | goto free_crypto; |
Namjae Jeon | 4589d25 | 2013-01-15 19:58:47 +0900 | [diff] [blame] | 1410 | f2fs_create_root_stats(); |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 1411 | f2fs_proc_root = proc_mkdir("fs/f2fs", NULL); |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1412 | return 0; |
| 1413 | |
Jaegeuk Kim | cfc4d97 | 2015-05-15 15:37:24 -0700 | [diff] [blame] | 1414 | free_crypto: |
| 1415 | f2fs_exit_crypto(); |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1416 | free_kset: |
| 1417 | kset_unregister(f2fs_kset); |
Chao Yu | 1dcc336 | 2015-02-05 17:57:31 +0800 | [diff] [blame] | 1418 | free_extent_cache: |
| 1419 | destroy_extent_cache(); |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1420 | free_checkpoint_caches: |
| 1421 | destroy_checkpoint_caches(); |
Jaegeuk Kim | 7fd9e54 | 2013-11-15 13:55:58 +0900 | [diff] [blame] | 1422 | free_segment_manager_caches: |
| 1423 | destroy_segment_manager_caches(); |
Zhao Hongjiang | 9890ff3 | 2013-08-20 16:49:51 +0800 | [diff] [blame] | 1424 | free_node_manager_caches: |
| 1425 | destroy_node_manager_caches(); |
| 1426 | free_inodecache: |
| 1427 | destroy_inodecache(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1428 | fail: |
| 1429 | return err; |
| 1430 | } |
| 1431 | |
| 1432 | static void __exit exit_f2fs_fs(void) |
| 1433 | { |
Jaegeuk Kim | 5e176d5 | 2013-06-28 12:47:01 +0900 | [diff] [blame] | 1434 | remove_proc_entry("fs/f2fs", NULL); |
Namjae Jeon | 4589d25 | 2013-01-15 19:58:47 +0900 | [diff] [blame] | 1435 | f2fs_destroy_root_stats(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1436 | unregister_filesystem(&f2fs_fs_type); |
Jaegeuk Kim | cfc4d97 | 2015-05-15 15:37:24 -0700 | [diff] [blame] | 1437 | f2fs_exit_crypto(); |
Wanpeng Li | fdf6c8b | 2015-03-06 15:00:54 +0800 | [diff] [blame] | 1438 | destroy_extent_cache(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1439 | destroy_checkpoint_caches(); |
Changman Lee | 5dcd8a7 | 2013-12-11 14:32:13 +0900 | [diff] [blame] | 1440 | destroy_segment_manager_caches(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1441 | destroy_node_manager_caches(); |
| 1442 | destroy_inodecache(); |
Namjae Jeon | b59d0ba | 2013-08-04 23:09:40 +0900 | [diff] [blame] | 1443 | kset_unregister(f2fs_kset); |
Jaegeuk Kim | 351f4fb | 2015-01-07 14:09:48 -0800 | [diff] [blame] | 1444 | f2fs_destroy_trace_ios(); |
Jaegeuk Kim | aff063e | 2012-11-02 17:07:47 +0900 | [diff] [blame] | 1445 | } |
| 1446 | |
| 1447 | module_init(init_f2fs_fs) |
| 1448 | module_exit(exit_f2fs_fs) |
| 1449 | |
| 1450 | MODULE_AUTHOR("Samsung Electronics's Praesto Team"); |
| 1451 | MODULE_DESCRIPTION("Flash Friendly File System"); |
| 1452 | MODULE_LICENSE("GPL"); |