| 1 | /* |
| 2 | * fs/f2fs/f2fs.h |
| 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 | #ifndef _LINUX_F2FS_H |
| 12 | #define _LINUX_F2FS_H |
| 13 | |
| 14 | #include <linux/types.h> |
| 15 | #include <linux/page-flags.h> |
| 16 | #include <linux/buffer_head.h> |
| 17 | #include <linux/slab.h> |
| 18 | #include <linux/crc32.h> |
| 19 | #include <linux/magic.h> |
| 20 | #include <linux/kobject.h> |
| 21 | #include <linux/sched.h> |
| 22 | #include <linux/vmalloc.h> |
| 23 | #include <linux/bio.h> |
| 24 | #include <linux/blkdev.h> |
| 25 | #include <linux/fscrypto.h> |
| 26 | #include <crypto/hash.h> |
| 27 | |
| 28 | #ifdef CONFIG_F2FS_CHECK_FS |
| 29 | #define f2fs_bug_on(sbi, condition) BUG_ON(condition) |
| 30 | #else |
| 31 | #define f2fs_bug_on(sbi, condition) \ |
| 32 | do { \ |
| 33 | if (unlikely(condition)) { \ |
| 34 | WARN_ON(1); \ |
| 35 | set_sbi_flag(sbi, SBI_NEED_FSCK); \ |
| 36 | } \ |
| 37 | } while (0) |
| 38 | #endif |
| 39 | |
| 40 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 41 | enum { |
| 42 | FAULT_KMALLOC, |
| 43 | FAULT_PAGE_ALLOC, |
| 44 | FAULT_ALLOC_NID, |
| 45 | FAULT_ORPHAN, |
| 46 | FAULT_BLOCK, |
| 47 | FAULT_DIR_DEPTH, |
| 48 | FAULT_EVICT_INODE, |
| 49 | FAULT_MAX, |
| 50 | }; |
| 51 | |
| 52 | struct f2fs_fault_info { |
| 53 | atomic_t inject_ops; |
| 54 | unsigned int inject_rate; |
| 55 | unsigned int inject_type; |
| 56 | }; |
| 57 | |
| 58 | extern struct f2fs_fault_info f2fs_fault; |
| 59 | extern char *fault_name[FAULT_MAX]; |
| 60 | #define IS_FAULT_SET(type) (f2fs_fault.inject_type & (1 << (type))) |
| 61 | |
| 62 | static inline bool time_to_inject(int type) |
| 63 | { |
| 64 | if (!f2fs_fault.inject_rate) |
| 65 | return false; |
| 66 | if (type == FAULT_KMALLOC && !IS_FAULT_SET(type)) |
| 67 | return false; |
| 68 | else if (type == FAULT_PAGE_ALLOC && !IS_FAULT_SET(type)) |
| 69 | return false; |
| 70 | else if (type == FAULT_ALLOC_NID && !IS_FAULT_SET(type)) |
| 71 | return false; |
| 72 | else if (type == FAULT_ORPHAN && !IS_FAULT_SET(type)) |
| 73 | return false; |
| 74 | else if (type == FAULT_BLOCK && !IS_FAULT_SET(type)) |
| 75 | return false; |
| 76 | else if (type == FAULT_DIR_DEPTH && !IS_FAULT_SET(type)) |
| 77 | return false; |
| 78 | else if (type == FAULT_EVICT_INODE && !IS_FAULT_SET(type)) |
| 79 | return false; |
| 80 | |
| 81 | atomic_inc(&f2fs_fault.inject_ops); |
| 82 | if (atomic_read(&f2fs_fault.inject_ops) >= f2fs_fault.inject_rate) { |
| 83 | atomic_set(&f2fs_fault.inject_ops, 0); |
| 84 | printk("%sF2FS-fs : inject %s in %pF\n", |
| 85 | KERN_INFO, |
| 86 | fault_name[type], |
| 87 | __builtin_return_address(0)); |
| 88 | return true; |
| 89 | } |
| 90 | return false; |
| 91 | } |
| 92 | #endif |
| 93 | |
| 94 | /* |
| 95 | * For mount options |
| 96 | */ |
| 97 | #define F2FS_MOUNT_BG_GC 0x00000001 |
| 98 | #define F2FS_MOUNT_DISABLE_ROLL_FORWARD 0x00000002 |
| 99 | #define F2FS_MOUNT_DISCARD 0x00000004 |
| 100 | #define F2FS_MOUNT_NOHEAP 0x00000008 |
| 101 | #define F2FS_MOUNT_XATTR_USER 0x00000010 |
| 102 | #define F2FS_MOUNT_POSIX_ACL 0x00000020 |
| 103 | #define F2FS_MOUNT_DISABLE_EXT_IDENTIFY 0x00000040 |
| 104 | #define F2FS_MOUNT_INLINE_XATTR 0x00000080 |
| 105 | #define F2FS_MOUNT_INLINE_DATA 0x00000100 |
| 106 | #define F2FS_MOUNT_INLINE_DENTRY 0x00000200 |
| 107 | #define F2FS_MOUNT_FLUSH_MERGE 0x00000400 |
| 108 | #define F2FS_MOUNT_NOBARRIER 0x00000800 |
| 109 | #define F2FS_MOUNT_FASTBOOT 0x00001000 |
| 110 | #define F2FS_MOUNT_EXTENT_CACHE 0x00002000 |
| 111 | #define F2FS_MOUNT_FORCE_FG_GC 0x00004000 |
| 112 | #define F2FS_MOUNT_DATA_FLUSH 0x00008000 |
| 113 | #define F2FS_MOUNT_FAULT_INJECTION 0x00010000 |
| 114 | #define F2FS_MOUNT_ADAPTIVE 0x00020000 |
| 115 | #define F2FS_MOUNT_LFS 0x00040000 |
| 116 | |
| 117 | #define clear_opt(sbi, option) (sbi->mount_opt.opt &= ~F2FS_MOUNT_##option) |
| 118 | #define set_opt(sbi, option) (sbi->mount_opt.opt |= F2FS_MOUNT_##option) |
| 119 | #define test_opt(sbi, option) (sbi->mount_opt.opt & F2FS_MOUNT_##option) |
| 120 | |
| 121 | #define ver_after(a, b) (typecheck(unsigned long long, a) && \ |
| 122 | typecheck(unsigned long long, b) && \ |
| 123 | ((long long)((a) - (b)) > 0)) |
| 124 | |
| 125 | typedef u32 block_t; /* |
| 126 | * should not change u32, since it is the on-disk block |
| 127 | * address format, __le32. |
| 128 | */ |
| 129 | typedef u32 nid_t; |
| 130 | |
| 131 | struct f2fs_mount_info { |
| 132 | unsigned int opt; |
| 133 | }; |
| 134 | |
| 135 | #define F2FS_FEATURE_ENCRYPT 0x0001 |
| 136 | #define F2FS_FEATURE_HMSMR 0x0002 |
| 137 | |
| 138 | #define F2FS_HAS_FEATURE(sb, mask) \ |
| 139 | ((F2FS_SB(sb)->raw_super->feature & cpu_to_le32(mask)) != 0) |
| 140 | #define F2FS_SET_FEATURE(sb, mask) \ |
| 141 | F2FS_SB(sb)->raw_super->feature |= cpu_to_le32(mask) |
| 142 | #define F2FS_CLEAR_FEATURE(sb, mask) \ |
| 143 | F2FS_SB(sb)->raw_super->feature &= ~cpu_to_le32(mask) |
| 144 | |
| 145 | /* |
| 146 | * For checkpoint manager |
| 147 | */ |
| 148 | enum { |
| 149 | NAT_BITMAP, |
| 150 | SIT_BITMAP |
| 151 | }; |
| 152 | |
| 153 | enum { |
| 154 | CP_UMOUNT, |
| 155 | CP_FASTBOOT, |
| 156 | CP_SYNC, |
| 157 | CP_RECOVERY, |
| 158 | CP_DISCARD, |
| 159 | }; |
| 160 | |
| 161 | #define DEF_BATCHED_TRIM_SECTIONS 32 |
| 162 | #define BATCHED_TRIM_SEGMENTS(sbi) \ |
| 163 | (SM_I(sbi)->trim_sections * (sbi)->segs_per_sec) |
| 164 | #define BATCHED_TRIM_BLOCKS(sbi) \ |
| 165 | (BATCHED_TRIM_SEGMENTS(sbi) << (sbi)->log_blocks_per_seg) |
| 166 | #define DEF_CP_INTERVAL 60 /* 60 secs */ |
| 167 | #define DEF_IDLE_INTERVAL 5 /* 5 secs */ |
| 168 | |
| 169 | struct cp_control { |
| 170 | int reason; |
| 171 | __u64 trim_start; |
| 172 | __u64 trim_end; |
| 173 | __u64 trim_minlen; |
| 174 | __u64 trimmed; |
| 175 | }; |
| 176 | |
| 177 | /* |
| 178 | * For CP/NAT/SIT/SSA readahead |
| 179 | */ |
| 180 | enum { |
| 181 | META_CP, |
| 182 | META_NAT, |
| 183 | META_SIT, |
| 184 | META_SSA, |
| 185 | META_POR, |
| 186 | }; |
| 187 | |
| 188 | /* for the list of ino */ |
| 189 | enum { |
| 190 | ORPHAN_INO, /* for orphan ino list */ |
| 191 | APPEND_INO, /* for append ino list */ |
| 192 | UPDATE_INO, /* for update ino list */ |
| 193 | MAX_INO_ENTRY, /* max. list */ |
| 194 | }; |
| 195 | |
| 196 | struct ino_entry { |
| 197 | struct list_head list; /* list head */ |
| 198 | nid_t ino; /* inode number */ |
| 199 | }; |
| 200 | |
| 201 | /* for the list of inodes to be GCed */ |
| 202 | struct inode_entry { |
| 203 | struct list_head list; /* list head */ |
| 204 | struct inode *inode; /* vfs inode pointer */ |
| 205 | }; |
| 206 | |
| 207 | /* for the list of blockaddresses to be discarded */ |
| 208 | struct discard_entry { |
| 209 | struct list_head list; /* list head */ |
| 210 | block_t blkaddr; /* block address to be discarded */ |
| 211 | int len; /* # of consecutive blocks of the discard */ |
| 212 | }; |
| 213 | |
| 214 | /* for the list of fsync inodes, used only during recovery */ |
| 215 | struct fsync_inode_entry { |
| 216 | struct list_head list; /* list head */ |
| 217 | struct inode *inode; /* vfs inode pointer */ |
| 218 | block_t blkaddr; /* block address locating the last fsync */ |
| 219 | block_t last_dentry; /* block address locating the last dentry */ |
| 220 | }; |
| 221 | |
| 222 | #define nats_in_cursum(jnl) (le16_to_cpu(jnl->n_nats)) |
| 223 | #define sits_in_cursum(jnl) (le16_to_cpu(jnl->n_sits)) |
| 224 | |
| 225 | #define nat_in_journal(jnl, i) (jnl->nat_j.entries[i].ne) |
| 226 | #define nid_in_journal(jnl, i) (jnl->nat_j.entries[i].nid) |
| 227 | #define sit_in_journal(jnl, i) (jnl->sit_j.entries[i].se) |
| 228 | #define segno_in_journal(jnl, i) (jnl->sit_j.entries[i].segno) |
| 229 | |
| 230 | #define MAX_NAT_JENTRIES(jnl) (NAT_JOURNAL_ENTRIES - nats_in_cursum(jnl)) |
| 231 | #define MAX_SIT_JENTRIES(jnl) (SIT_JOURNAL_ENTRIES - sits_in_cursum(jnl)) |
| 232 | |
| 233 | static inline int update_nats_in_cursum(struct f2fs_journal *journal, int i) |
| 234 | { |
| 235 | int before = nats_in_cursum(journal); |
| 236 | journal->n_nats = cpu_to_le16(before + i); |
| 237 | return before; |
| 238 | } |
| 239 | |
| 240 | static inline int update_sits_in_cursum(struct f2fs_journal *journal, int i) |
| 241 | { |
| 242 | int before = sits_in_cursum(journal); |
| 243 | journal->n_sits = cpu_to_le16(before + i); |
| 244 | return before; |
| 245 | } |
| 246 | |
| 247 | static inline bool __has_cursum_space(struct f2fs_journal *journal, |
| 248 | int size, int type) |
| 249 | { |
| 250 | if (type == NAT_JOURNAL) |
| 251 | return size <= MAX_NAT_JENTRIES(journal); |
| 252 | return size <= MAX_SIT_JENTRIES(journal); |
| 253 | } |
| 254 | |
| 255 | /* |
| 256 | * ioctl commands |
| 257 | */ |
| 258 | #define F2FS_IOC_GETFLAGS FS_IOC_GETFLAGS |
| 259 | #define F2FS_IOC_SETFLAGS FS_IOC_SETFLAGS |
| 260 | #define F2FS_IOC_GETVERSION FS_IOC_GETVERSION |
| 261 | |
| 262 | #define F2FS_IOCTL_MAGIC 0xf5 |
| 263 | #define F2FS_IOC_START_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 1) |
| 264 | #define F2FS_IOC_COMMIT_ATOMIC_WRITE _IO(F2FS_IOCTL_MAGIC, 2) |
| 265 | #define F2FS_IOC_START_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 3) |
| 266 | #define F2FS_IOC_RELEASE_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 4) |
| 267 | #define F2FS_IOC_ABORT_VOLATILE_WRITE _IO(F2FS_IOCTL_MAGIC, 5) |
| 268 | #define F2FS_IOC_GARBAGE_COLLECT _IO(F2FS_IOCTL_MAGIC, 6) |
| 269 | #define F2FS_IOC_WRITE_CHECKPOINT _IO(F2FS_IOCTL_MAGIC, 7) |
| 270 | #define F2FS_IOC_DEFRAGMENT _IO(F2FS_IOCTL_MAGIC, 8) |
| 271 | #define F2FS_IOC_MOVE_RANGE _IOWR(F2FS_IOCTL_MAGIC, 9, \ |
| 272 | struct f2fs_move_range) |
| 273 | |
| 274 | #define F2FS_IOC_SET_ENCRYPTION_POLICY FS_IOC_SET_ENCRYPTION_POLICY |
| 275 | #define F2FS_IOC_GET_ENCRYPTION_POLICY FS_IOC_GET_ENCRYPTION_POLICY |
| 276 | #define F2FS_IOC_GET_ENCRYPTION_PWSALT FS_IOC_GET_ENCRYPTION_PWSALT |
| 277 | |
| 278 | /* |
| 279 | * should be same as XFS_IOC_GOINGDOWN. |
| 280 | * Flags for going down operation used by FS_IOC_GOINGDOWN |
| 281 | */ |
| 282 | #define F2FS_IOC_SHUTDOWN _IOR('X', 125, __u32) /* Shutdown */ |
| 283 | #define F2FS_GOING_DOWN_FULLSYNC 0x0 /* going down with full sync */ |
| 284 | #define F2FS_GOING_DOWN_METASYNC 0x1 /* going down with metadata */ |
| 285 | #define F2FS_GOING_DOWN_NOSYNC 0x2 /* going down */ |
| 286 | #define F2FS_GOING_DOWN_METAFLUSH 0x3 /* going down with meta flush */ |
| 287 | |
| 288 | #if defined(__KERNEL__) && defined(CONFIG_COMPAT) |
| 289 | /* |
| 290 | * ioctl commands in 32 bit emulation |
| 291 | */ |
| 292 | #define F2FS_IOC32_GETFLAGS FS_IOC32_GETFLAGS |
| 293 | #define F2FS_IOC32_SETFLAGS FS_IOC32_SETFLAGS |
| 294 | #define F2FS_IOC32_GETVERSION FS_IOC32_GETVERSION |
| 295 | #endif |
| 296 | |
| 297 | struct f2fs_defragment { |
| 298 | u64 start; |
| 299 | u64 len; |
| 300 | }; |
| 301 | |
| 302 | struct f2fs_move_range { |
| 303 | u32 dst_fd; /* destination fd */ |
| 304 | u64 pos_in; /* start position in src_fd */ |
| 305 | u64 pos_out; /* start position in dst_fd */ |
| 306 | u64 len; /* size to move */ |
| 307 | }; |
| 308 | |
| 309 | /* |
| 310 | * For INODE and NODE manager |
| 311 | */ |
| 312 | /* for directory operations */ |
| 313 | struct f2fs_dentry_ptr { |
| 314 | struct inode *inode; |
| 315 | const void *bitmap; |
| 316 | struct f2fs_dir_entry *dentry; |
| 317 | __u8 (*filename)[F2FS_SLOT_LEN]; |
| 318 | int max; |
| 319 | }; |
| 320 | |
| 321 | static inline void make_dentry_ptr(struct inode *inode, |
| 322 | struct f2fs_dentry_ptr *d, void *src, int type) |
| 323 | { |
| 324 | d->inode = inode; |
| 325 | |
| 326 | if (type == 1) { |
| 327 | struct f2fs_dentry_block *t = (struct f2fs_dentry_block *)src; |
| 328 | d->max = NR_DENTRY_IN_BLOCK; |
| 329 | d->bitmap = &t->dentry_bitmap; |
| 330 | d->dentry = t->dentry; |
| 331 | d->filename = t->filename; |
| 332 | } else { |
| 333 | struct f2fs_inline_dentry *t = (struct f2fs_inline_dentry *)src; |
| 334 | d->max = NR_INLINE_DENTRY; |
| 335 | d->bitmap = &t->dentry_bitmap; |
| 336 | d->dentry = t->dentry; |
| 337 | d->filename = t->filename; |
| 338 | } |
| 339 | } |
| 340 | |
| 341 | /* |
| 342 | * XATTR_NODE_OFFSET stores xattrs to one node block per file keeping -1 |
| 343 | * as its node offset to distinguish from index node blocks. |
| 344 | * But some bits are used to mark the node block. |
| 345 | */ |
| 346 | #define XATTR_NODE_OFFSET ((((unsigned int)-1) << OFFSET_BIT_SHIFT) \ |
| 347 | >> OFFSET_BIT_SHIFT) |
| 348 | enum { |
| 349 | ALLOC_NODE, /* allocate a new node page if needed */ |
| 350 | LOOKUP_NODE, /* look up a node without readahead */ |
| 351 | LOOKUP_NODE_RA, /* |
| 352 | * look up a node with readahead called |
| 353 | * by get_data_block. |
| 354 | */ |
| 355 | }; |
| 356 | |
| 357 | #define F2FS_LINK_MAX 0xffffffff /* maximum link count per file */ |
| 358 | |
| 359 | #define MAX_DIR_RA_PAGES 4 /* maximum ra pages of dir */ |
| 360 | |
| 361 | /* vector size for gang look-up from extent cache that consists of radix tree */ |
| 362 | #define EXT_TREE_VEC_SIZE 64 |
| 363 | |
| 364 | /* for in-memory extent cache entry */ |
| 365 | #define F2FS_MIN_EXTENT_LEN 64 /* minimum extent length */ |
| 366 | |
| 367 | /* number of extent info in extent cache we try to shrink */ |
| 368 | #define EXTENT_CACHE_SHRINK_NUMBER 128 |
| 369 | |
| 370 | struct extent_info { |
| 371 | unsigned int fofs; /* start offset in a file */ |
| 372 | u32 blk; /* start block address of the extent */ |
| 373 | unsigned int len; /* length of the extent */ |
| 374 | }; |
| 375 | |
| 376 | struct extent_node { |
| 377 | struct rb_node rb_node; /* rb node located in rb-tree */ |
| 378 | struct list_head list; /* node in global extent list of sbi */ |
| 379 | struct extent_info ei; /* extent info */ |
| 380 | struct extent_tree *et; /* extent tree pointer */ |
| 381 | }; |
| 382 | |
| 383 | struct extent_tree { |
| 384 | nid_t ino; /* inode number */ |
| 385 | struct rb_root root; /* root of extent info rb-tree */ |
| 386 | struct extent_node *cached_en; /* recently accessed extent node */ |
| 387 | struct extent_info largest; /* largested extent info */ |
| 388 | struct list_head list; /* to be used by sbi->zombie_list */ |
| 389 | rwlock_t lock; /* protect extent info rb-tree */ |
| 390 | atomic_t node_cnt; /* # of extent node in rb-tree*/ |
| 391 | }; |
| 392 | |
| 393 | /* |
| 394 | * This structure is taken from ext4_map_blocks. |
| 395 | * |
| 396 | * Note that, however, f2fs uses NEW and MAPPED flags for f2fs_map_blocks(). |
| 397 | */ |
| 398 | #define F2FS_MAP_NEW (1 << BH_New) |
| 399 | #define F2FS_MAP_MAPPED (1 << BH_Mapped) |
| 400 | #define F2FS_MAP_UNWRITTEN (1 << BH_Unwritten) |
| 401 | #define F2FS_MAP_FLAGS (F2FS_MAP_NEW | F2FS_MAP_MAPPED |\ |
| 402 | F2FS_MAP_UNWRITTEN) |
| 403 | |
| 404 | struct f2fs_map_blocks { |
| 405 | block_t m_pblk; |
| 406 | block_t m_lblk; |
| 407 | unsigned int m_len; |
| 408 | unsigned int m_flags; |
| 409 | pgoff_t *m_next_pgofs; /* point next possible non-hole pgofs */ |
| 410 | }; |
| 411 | |
| 412 | /* for flag in get_data_block */ |
| 413 | #define F2FS_GET_BLOCK_READ 0 |
| 414 | #define F2FS_GET_BLOCK_DIO 1 |
| 415 | #define F2FS_GET_BLOCK_FIEMAP 2 |
| 416 | #define F2FS_GET_BLOCK_BMAP 3 |
| 417 | #define F2FS_GET_BLOCK_PRE_DIO 4 |
| 418 | #define F2FS_GET_BLOCK_PRE_AIO 5 |
| 419 | |
| 420 | /* |
| 421 | * i_advise uses FADVISE_XXX_BIT. We can add additional hints later. |
| 422 | */ |
| 423 | #define FADVISE_COLD_BIT 0x01 |
| 424 | #define FADVISE_LOST_PINO_BIT 0x02 |
| 425 | #define FADVISE_ENCRYPT_BIT 0x04 |
| 426 | #define FADVISE_ENC_NAME_BIT 0x08 |
| 427 | |
| 428 | #define file_is_cold(inode) is_file(inode, FADVISE_COLD_BIT) |
| 429 | #define file_wrong_pino(inode) is_file(inode, FADVISE_LOST_PINO_BIT) |
| 430 | #define file_set_cold(inode) set_file(inode, FADVISE_COLD_BIT) |
| 431 | #define file_lost_pino(inode) set_file(inode, FADVISE_LOST_PINO_BIT) |
| 432 | #define file_clear_cold(inode) clear_file(inode, FADVISE_COLD_BIT) |
| 433 | #define file_got_pino(inode) clear_file(inode, FADVISE_LOST_PINO_BIT) |
| 434 | #define file_is_encrypt(inode) is_file(inode, FADVISE_ENCRYPT_BIT) |
| 435 | #define file_set_encrypt(inode) set_file(inode, FADVISE_ENCRYPT_BIT) |
| 436 | #define file_clear_encrypt(inode) clear_file(inode, FADVISE_ENCRYPT_BIT) |
| 437 | #define file_enc_name(inode) is_file(inode, FADVISE_ENC_NAME_BIT) |
| 438 | #define file_set_enc_name(inode) set_file(inode, FADVISE_ENC_NAME_BIT) |
| 439 | |
| 440 | #define DEF_DIR_LEVEL 0 |
| 441 | |
| 442 | struct f2fs_inode_info { |
| 443 | struct inode vfs_inode; /* serve a vfs inode */ |
| 444 | unsigned long i_flags; /* keep an inode flags for ioctl */ |
| 445 | unsigned char i_advise; /* use to give file attribute hints */ |
| 446 | unsigned char i_dir_level; /* use for dentry level for large dir */ |
| 447 | unsigned int i_current_depth; /* use only in directory structure */ |
| 448 | unsigned int i_pino; /* parent inode number */ |
| 449 | umode_t i_acl_mode; /* keep file acl mode temporarily */ |
| 450 | |
| 451 | /* Use below internally in f2fs*/ |
| 452 | unsigned long flags; /* use to pass per-file flags */ |
| 453 | struct rw_semaphore i_sem; /* protect fi info */ |
| 454 | struct percpu_counter dirty_pages; /* # of dirty pages */ |
| 455 | f2fs_hash_t chash; /* hash value of given file name */ |
| 456 | unsigned int clevel; /* maximum level of given file name */ |
| 457 | nid_t i_xattr_nid; /* node id that contains xattrs */ |
| 458 | unsigned long long xattr_ver; /* cp version of xattr modification */ |
| 459 | loff_t last_disk_size; /* lastly written file size */ |
| 460 | |
| 461 | struct list_head dirty_list; /* dirty list for dirs and files */ |
| 462 | struct list_head gdirty_list; /* linked in global dirty list */ |
| 463 | struct list_head inmem_pages; /* inmemory pages managed by f2fs */ |
| 464 | struct mutex inmem_lock; /* lock for inmemory pages */ |
| 465 | struct extent_tree *extent_tree; /* cached extent_tree entry */ |
| 466 | struct rw_semaphore dio_rwsem[2];/* avoid racing between dio and gc */ |
| 467 | }; |
| 468 | |
| 469 | static inline void get_extent_info(struct extent_info *ext, |
| 470 | struct f2fs_extent *i_ext) |
| 471 | { |
| 472 | ext->fofs = le32_to_cpu(i_ext->fofs); |
| 473 | ext->blk = le32_to_cpu(i_ext->blk); |
| 474 | ext->len = le32_to_cpu(i_ext->len); |
| 475 | } |
| 476 | |
| 477 | static inline void set_raw_extent(struct extent_info *ext, |
| 478 | struct f2fs_extent *i_ext) |
| 479 | { |
| 480 | i_ext->fofs = cpu_to_le32(ext->fofs); |
| 481 | i_ext->blk = cpu_to_le32(ext->blk); |
| 482 | i_ext->len = cpu_to_le32(ext->len); |
| 483 | } |
| 484 | |
| 485 | static inline void set_extent_info(struct extent_info *ei, unsigned int fofs, |
| 486 | u32 blk, unsigned int len) |
| 487 | { |
| 488 | ei->fofs = fofs; |
| 489 | ei->blk = blk; |
| 490 | ei->len = len; |
| 491 | } |
| 492 | |
| 493 | static inline bool __is_extent_same(struct extent_info *ei1, |
| 494 | struct extent_info *ei2) |
| 495 | { |
| 496 | return (ei1->fofs == ei2->fofs && ei1->blk == ei2->blk && |
| 497 | ei1->len == ei2->len); |
| 498 | } |
| 499 | |
| 500 | static inline bool __is_extent_mergeable(struct extent_info *back, |
| 501 | struct extent_info *front) |
| 502 | { |
| 503 | return (back->fofs + back->len == front->fofs && |
| 504 | back->blk + back->len == front->blk); |
| 505 | } |
| 506 | |
| 507 | static inline bool __is_back_mergeable(struct extent_info *cur, |
| 508 | struct extent_info *back) |
| 509 | { |
| 510 | return __is_extent_mergeable(back, cur); |
| 511 | } |
| 512 | |
| 513 | static inline bool __is_front_mergeable(struct extent_info *cur, |
| 514 | struct extent_info *front) |
| 515 | { |
| 516 | return __is_extent_mergeable(cur, front); |
| 517 | } |
| 518 | |
| 519 | extern void f2fs_mark_inode_dirty_sync(struct inode *); |
| 520 | static inline void __try_update_largest_extent(struct inode *inode, |
| 521 | struct extent_tree *et, struct extent_node *en) |
| 522 | { |
| 523 | if (en->ei.len > et->largest.len) { |
| 524 | et->largest = en->ei; |
| 525 | f2fs_mark_inode_dirty_sync(inode); |
| 526 | } |
| 527 | } |
| 528 | |
| 529 | struct f2fs_nm_info { |
| 530 | block_t nat_blkaddr; /* base disk address of NAT */ |
| 531 | nid_t max_nid; /* maximum possible node ids */ |
| 532 | nid_t available_nids; /* maximum available node ids */ |
| 533 | nid_t next_scan_nid; /* the next nid to be scanned */ |
| 534 | unsigned int ram_thresh; /* control the memory footprint */ |
| 535 | unsigned int ra_nid_pages; /* # of nid pages to be readaheaded */ |
| 536 | unsigned int dirty_nats_ratio; /* control dirty nats ratio threshold */ |
| 537 | |
| 538 | /* NAT cache management */ |
| 539 | struct radix_tree_root nat_root;/* root of the nat entry cache */ |
| 540 | struct radix_tree_root nat_set_root;/* root of the nat set cache */ |
| 541 | struct rw_semaphore nat_tree_lock; /* protect nat_tree_lock */ |
| 542 | struct list_head nat_entries; /* cached nat entry list (clean) */ |
| 543 | unsigned int nat_cnt; /* the # of cached nat entries */ |
| 544 | unsigned int dirty_nat_cnt; /* total num of nat entries in set */ |
| 545 | |
| 546 | /* free node ids management */ |
| 547 | struct radix_tree_root free_nid_root;/* root of the free_nid cache */ |
| 548 | struct list_head free_nid_list; /* a list for free nids */ |
| 549 | spinlock_t free_nid_list_lock; /* protect free nid list */ |
| 550 | unsigned int fcnt; /* the number of free node id */ |
| 551 | struct mutex build_lock; /* lock for build free nids */ |
| 552 | |
| 553 | /* for checkpoint */ |
| 554 | char *nat_bitmap; /* NAT bitmap pointer */ |
| 555 | int bitmap_size; /* bitmap size */ |
| 556 | }; |
| 557 | |
| 558 | /* |
| 559 | * this structure is used as one of function parameters. |
| 560 | * all the information are dedicated to a given direct node block determined |
| 561 | * by the data offset in a file. |
| 562 | */ |
| 563 | struct dnode_of_data { |
| 564 | struct inode *inode; /* vfs inode pointer */ |
| 565 | struct page *inode_page; /* its inode page, NULL is possible */ |
| 566 | struct page *node_page; /* cached direct node page */ |
| 567 | nid_t nid; /* node id of the direct node block */ |
| 568 | unsigned int ofs_in_node; /* data offset in the node page */ |
| 569 | bool inode_page_locked; /* inode page is locked or not */ |
| 570 | bool node_changed; /* is node block changed */ |
| 571 | char cur_level; /* level of hole node page */ |
| 572 | char max_level; /* level of current page located */ |
| 573 | block_t data_blkaddr; /* block address of the node block */ |
| 574 | }; |
| 575 | |
| 576 | static inline void set_new_dnode(struct dnode_of_data *dn, struct inode *inode, |
| 577 | struct page *ipage, struct page *npage, nid_t nid) |
| 578 | { |
| 579 | memset(dn, 0, sizeof(*dn)); |
| 580 | dn->inode = inode; |
| 581 | dn->inode_page = ipage; |
| 582 | dn->node_page = npage; |
| 583 | dn->nid = nid; |
| 584 | } |
| 585 | |
| 586 | /* |
| 587 | * For SIT manager |
| 588 | * |
| 589 | * By default, there are 6 active log areas across the whole main area. |
| 590 | * When considering hot and cold data separation to reduce cleaning overhead, |
| 591 | * we split 3 for data logs and 3 for node logs as hot, warm, and cold types, |
| 592 | * respectively. |
| 593 | * In the current design, you should not change the numbers intentionally. |
| 594 | * Instead, as a mount option such as active_logs=x, you can use 2, 4, and 6 |
| 595 | * logs individually according to the underlying devices. (default: 6) |
| 596 | * Just in case, on-disk layout covers maximum 16 logs that consist of 8 for |
| 597 | * data and 8 for node logs. |
| 598 | */ |
| 599 | #define NR_CURSEG_DATA_TYPE (3) |
| 600 | #define NR_CURSEG_NODE_TYPE (3) |
| 601 | #define NR_CURSEG_TYPE (NR_CURSEG_DATA_TYPE + NR_CURSEG_NODE_TYPE) |
| 602 | |
| 603 | enum { |
| 604 | CURSEG_HOT_DATA = 0, /* directory entry blocks */ |
| 605 | CURSEG_WARM_DATA, /* data blocks */ |
| 606 | CURSEG_COLD_DATA, /* multimedia or GCed data blocks */ |
| 607 | CURSEG_HOT_NODE, /* direct node blocks of directory files */ |
| 608 | CURSEG_WARM_NODE, /* direct node blocks of normal files */ |
| 609 | CURSEG_COLD_NODE, /* indirect node blocks */ |
| 610 | NO_CHECK_TYPE, |
| 611 | CURSEG_DIRECT_IO, /* to use for the direct IO path */ |
| 612 | }; |
| 613 | |
| 614 | struct flush_cmd { |
| 615 | struct completion wait; |
| 616 | struct llist_node llnode; |
| 617 | int ret; |
| 618 | }; |
| 619 | |
| 620 | struct flush_cmd_control { |
| 621 | struct task_struct *f2fs_issue_flush; /* flush thread */ |
| 622 | wait_queue_head_t flush_wait_queue; /* waiting queue for wake-up */ |
| 623 | atomic_t submit_flush; /* # of issued flushes */ |
| 624 | struct llist_head issue_list; /* list for command issue */ |
| 625 | struct llist_node *dispatch_list; /* list for command dispatch */ |
| 626 | }; |
| 627 | |
| 628 | struct f2fs_sm_info { |
| 629 | struct sit_info *sit_info; /* whole segment information */ |
| 630 | struct free_segmap_info *free_info; /* free segment information */ |
| 631 | struct dirty_seglist_info *dirty_info; /* dirty segment information */ |
| 632 | struct curseg_info *curseg_array; /* active segment information */ |
| 633 | |
| 634 | block_t seg0_blkaddr; /* block address of 0'th segment */ |
| 635 | block_t main_blkaddr; /* start block address of main area */ |
| 636 | block_t ssa_blkaddr; /* start block address of SSA area */ |
| 637 | |
| 638 | unsigned int segment_count; /* total # of segments */ |
| 639 | unsigned int main_segments; /* # of segments in main area */ |
| 640 | unsigned int reserved_segments; /* # of reserved segments */ |
| 641 | unsigned int ovp_segments; /* # of overprovision segments */ |
| 642 | |
| 643 | /* a threshold to reclaim prefree segments */ |
| 644 | unsigned int rec_prefree_segments; |
| 645 | |
| 646 | /* for small discard management */ |
| 647 | struct list_head discard_list; /* 4KB discard list */ |
| 648 | int nr_discards; /* # of discards in the list */ |
| 649 | int max_discards; /* max. discards to be issued */ |
| 650 | |
| 651 | /* for batched trimming */ |
| 652 | unsigned int trim_sections; /* # of sections to trim */ |
| 653 | |
| 654 | struct list_head sit_entry_set; /* sit entry set list */ |
| 655 | |
| 656 | unsigned int ipu_policy; /* in-place-update policy */ |
| 657 | unsigned int min_ipu_util; /* in-place-update threshold */ |
| 658 | unsigned int min_fsync_blocks; /* threshold for fsync */ |
| 659 | |
| 660 | /* for flush command control */ |
| 661 | struct flush_cmd_control *cmd_control_info; |
| 662 | |
| 663 | }; |
| 664 | |
| 665 | /* |
| 666 | * For superblock |
| 667 | */ |
| 668 | /* |
| 669 | * COUNT_TYPE for monitoring |
| 670 | * |
| 671 | * f2fs monitors the number of several block types such as on-writeback, |
| 672 | * dirty dentry blocks, dirty node blocks, and dirty meta blocks. |
| 673 | */ |
| 674 | enum count_type { |
| 675 | F2FS_DIRTY_DENTS, |
| 676 | F2FS_DIRTY_DATA, |
| 677 | F2FS_DIRTY_NODES, |
| 678 | F2FS_DIRTY_META, |
| 679 | F2FS_INMEM_PAGES, |
| 680 | F2FS_DIRTY_IMETA, |
| 681 | NR_COUNT_TYPE, |
| 682 | }; |
| 683 | |
| 684 | /* |
| 685 | * The below are the page types of bios used in submit_bio(). |
| 686 | * The available types are: |
| 687 | * DATA User data pages. It operates as async mode. |
| 688 | * NODE Node pages. It operates as async mode. |
| 689 | * META FS metadata pages such as SIT, NAT, CP. |
| 690 | * NR_PAGE_TYPE The number of page types. |
| 691 | * META_FLUSH Make sure the previous pages are written |
| 692 | * with waiting the bio's completion |
| 693 | * ... Only can be used with META. |
| 694 | */ |
| 695 | #define PAGE_TYPE_OF_BIO(type) ((type) > META ? META : (type)) |
| 696 | enum page_type { |
| 697 | DATA, |
| 698 | NODE, |
| 699 | META, |
| 700 | NR_PAGE_TYPE, |
| 701 | META_FLUSH, |
| 702 | INMEM, /* the below types are used by tracepoints only. */ |
| 703 | INMEM_DROP, |
| 704 | INMEM_REVOKE, |
| 705 | IPU, |
| 706 | OPU, |
| 707 | }; |
| 708 | |
| 709 | struct f2fs_io_info { |
| 710 | struct f2fs_sb_info *sbi; /* f2fs_sb_info pointer */ |
| 711 | enum page_type type; /* contains DATA/NODE/META/META_FLUSH */ |
| 712 | int op; /* contains REQ_OP_ */ |
| 713 | int op_flags; /* rq_flag_bits */ |
| 714 | block_t new_blkaddr; /* new block address to be written */ |
| 715 | block_t old_blkaddr; /* old block address before Cow */ |
| 716 | struct page *page; /* page to be written */ |
| 717 | struct page *encrypted_page; /* encrypted page */ |
| 718 | }; |
| 719 | |
| 720 | #define is_read_io(rw) (rw == READ) |
| 721 | struct f2fs_bio_info { |
| 722 | struct f2fs_sb_info *sbi; /* f2fs superblock */ |
| 723 | struct bio *bio; /* bios to merge */ |
| 724 | sector_t last_block_in_bio; /* last block number */ |
| 725 | struct f2fs_io_info fio; /* store buffered io info. */ |
| 726 | struct rw_semaphore io_rwsem; /* blocking op for bio */ |
| 727 | }; |
| 728 | |
| 729 | enum inode_type { |
| 730 | DIR_INODE, /* for dirty dir inode */ |
| 731 | FILE_INODE, /* for dirty regular/symlink inode */ |
| 732 | DIRTY_META, /* for all dirtied inode metadata */ |
| 733 | NR_INODE_TYPE, |
| 734 | }; |
| 735 | |
| 736 | /* for inner inode cache management */ |
| 737 | struct inode_management { |
| 738 | struct radix_tree_root ino_root; /* ino entry array */ |
| 739 | spinlock_t ino_lock; /* for ino entry lock */ |
| 740 | struct list_head ino_list; /* inode list head */ |
| 741 | unsigned long ino_num; /* number of entries */ |
| 742 | }; |
| 743 | |
| 744 | /* For s_flag in struct f2fs_sb_info */ |
| 745 | enum { |
| 746 | SBI_IS_DIRTY, /* dirty flag for checkpoint */ |
| 747 | SBI_IS_CLOSE, /* specify unmounting */ |
| 748 | SBI_NEED_FSCK, /* need fsck.f2fs to fix */ |
| 749 | SBI_POR_DOING, /* recovery is doing or not */ |
| 750 | SBI_NEED_SB_WRITE, /* need to recover superblock */ |
| 751 | }; |
| 752 | |
| 753 | enum { |
| 754 | CP_TIME, |
| 755 | REQ_TIME, |
| 756 | MAX_TIME, |
| 757 | }; |
| 758 | |
| 759 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 760 | #define F2FS_KEY_DESC_PREFIX "f2fs:" |
| 761 | #define F2FS_KEY_DESC_PREFIX_SIZE 5 |
| 762 | #endif |
| 763 | struct f2fs_sb_info { |
| 764 | struct super_block *sb; /* pointer to VFS super block */ |
| 765 | struct proc_dir_entry *s_proc; /* proc entry */ |
| 766 | struct f2fs_super_block *raw_super; /* raw super block pointer */ |
| 767 | int valid_super_block; /* valid super block no */ |
| 768 | int s_flag; /* flags for sbi */ |
| 769 | |
| 770 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 771 | u8 key_prefix[F2FS_KEY_DESC_PREFIX_SIZE]; |
| 772 | u8 key_prefix_size; |
| 773 | #endif |
| 774 | /* for node-related operations */ |
| 775 | struct f2fs_nm_info *nm_info; /* node manager */ |
| 776 | struct inode *node_inode; /* cache node blocks */ |
| 777 | |
| 778 | /* for segment-related operations */ |
| 779 | struct f2fs_sm_info *sm_info; /* segment manager */ |
| 780 | |
| 781 | /* for bio operations */ |
| 782 | struct f2fs_bio_info read_io; /* for read bios */ |
| 783 | struct f2fs_bio_info write_io[NR_PAGE_TYPE]; /* for write bios */ |
| 784 | struct mutex wio_mutex[NODE + 1]; /* bio ordering for NODE/DATA */ |
| 785 | |
| 786 | /* for checkpoint */ |
| 787 | struct f2fs_checkpoint *ckpt; /* raw checkpoint pointer */ |
| 788 | struct inode *meta_inode; /* cache meta blocks */ |
| 789 | struct mutex cp_mutex; /* checkpoint procedure lock */ |
| 790 | struct rw_semaphore cp_rwsem; /* blocking FS operations */ |
| 791 | struct rw_semaphore node_write; /* locking node writes */ |
| 792 | wait_queue_head_t cp_wait; |
| 793 | unsigned long last_time[MAX_TIME]; /* to store time in jiffies */ |
| 794 | long interval_time[MAX_TIME]; /* to store thresholds */ |
| 795 | |
| 796 | struct inode_management im[MAX_INO_ENTRY]; /* manage inode cache */ |
| 797 | |
| 798 | /* for orphan inode, use 0'th array */ |
| 799 | unsigned int max_orphans; /* max orphan inodes */ |
| 800 | |
| 801 | /* for inode management */ |
| 802 | struct list_head inode_list[NR_INODE_TYPE]; /* dirty inode list */ |
| 803 | spinlock_t inode_lock[NR_INODE_TYPE]; /* for dirty inode list lock */ |
| 804 | |
| 805 | /* for extent tree cache */ |
| 806 | struct radix_tree_root extent_tree_root;/* cache extent cache entries */ |
| 807 | struct rw_semaphore extent_tree_lock; /* locking extent radix tree */ |
| 808 | struct list_head extent_list; /* lru list for shrinker */ |
| 809 | spinlock_t extent_lock; /* locking extent lru list */ |
| 810 | atomic_t total_ext_tree; /* extent tree count */ |
| 811 | struct list_head zombie_list; /* extent zombie tree list */ |
| 812 | atomic_t total_zombie_tree; /* extent zombie tree count */ |
| 813 | atomic_t total_ext_node; /* extent info count */ |
| 814 | |
| 815 | /* basic filesystem units */ |
| 816 | unsigned int log_sectors_per_block; /* log2 sectors per block */ |
| 817 | unsigned int log_blocksize; /* log2 block size */ |
| 818 | unsigned int blocksize; /* block size */ |
| 819 | unsigned int root_ino_num; /* root inode number*/ |
| 820 | unsigned int node_ino_num; /* node inode number*/ |
| 821 | unsigned int meta_ino_num; /* meta inode number*/ |
| 822 | unsigned int log_blocks_per_seg; /* log2 blocks per segment */ |
| 823 | unsigned int blocks_per_seg; /* blocks per segment */ |
| 824 | unsigned int segs_per_sec; /* segments per section */ |
| 825 | unsigned int secs_per_zone; /* sections per zone */ |
| 826 | unsigned int total_sections; /* total section count */ |
| 827 | unsigned int total_node_count; /* total node block count */ |
| 828 | unsigned int total_valid_node_count; /* valid node block count */ |
| 829 | loff_t max_file_blocks; /* max block index of file */ |
| 830 | int active_logs; /* # of active logs */ |
| 831 | int dir_level; /* directory level */ |
| 832 | |
| 833 | block_t user_block_count; /* # of user blocks */ |
| 834 | block_t total_valid_block_count; /* # of valid blocks */ |
| 835 | block_t discard_blks; /* discard command candidats */ |
| 836 | block_t last_valid_block_count; /* for recovery */ |
| 837 | u32 s_next_generation; /* for NFS support */ |
| 838 | atomic_t nr_wb_bios; /* # of writeback bios */ |
| 839 | |
| 840 | /* # of pages, see count_type */ |
| 841 | struct percpu_counter nr_pages[NR_COUNT_TYPE]; |
| 842 | /* # of allocated blocks */ |
| 843 | struct percpu_counter alloc_valid_block_count; |
| 844 | |
| 845 | /* valid inode count */ |
| 846 | struct percpu_counter total_valid_inode_count; |
| 847 | |
| 848 | struct f2fs_mount_info mount_opt; /* mount options */ |
| 849 | |
| 850 | /* for cleaning operations */ |
| 851 | struct mutex gc_mutex; /* mutex for GC */ |
| 852 | struct f2fs_gc_kthread *gc_thread; /* GC thread */ |
| 853 | unsigned int cur_victim_sec; /* current victim section num */ |
| 854 | |
| 855 | /* maximum # of trials to find a victim segment for SSR and GC */ |
| 856 | unsigned int max_victim_search; |
| 857 | |
| 858 | /* |
| 859 | * for stat information. |
| 860 | * one is for the LFS mode, and the other is for the SSR mode. |
| 861 | */ |
| 862 | #ifdef CONFIG_F2FS_STAT_FS |
| 863 | struct f2fs_stat_info *stat_info; /* FS status information */ |
| 864 | unsigned int segment_count[2]; /* # of allocated segments */ |
| 865 | unsigned int block_count[2]; /* # of allocated blocks */ |
| 866 | atomic_t inplace_count; /* # of inplace update */ |
| 867 | atomic64_t total_hit_ext; /* # of lookup extent cache */ |
| 868 | atomic64_t read_hit_rbtree; /* # of hit rbtree extent node */ |
| 869 | atomic64_t read_hit_largest; /* # of hit largest extent node */ |
| 870 | atomic64_t read_hit_cached; /* # of hit cached extent node */ |
| 871 | atomic_t inline_xattr; /* # of inline_xattr inodes */ |
| 872 | atomic_t inline_inode; /* # of inline_data inodes */ |
| 873 | atomic_t inline_dir; /* # of inline_dentry inodes */ |
| 874 | int bg_gc; /* background gc calls */ |
| 875 | unsigned int ndirty_inode[NR_INODE_TYPE]; /* # of dirty inodes */ |
| 876 | #endif |
| 877 | unsigned int last_victim[2]; /* last victim segment # */ |
| 878 | spinlock_t stat_lock; /* lock for stat operations */ |
| 879 | |
| 880 | /* For sysfs suppport */ |
| 881 | struct kobject s_kobj; |
| 882 | struct completion s_kobj_unregister; |
| 883 | |
| 884 | /* For shrinker support */ |
| 885 | struct list_head s_list; |
| 886 | struct mutex umount_mutex; |
| 887 | unsigned int shrinker_run_no; |
| 888 | |
| 889 | /* For write statistics */ |
| 890 | u64 sectors_written_start; |
| 891 | u64 kbytes_written; |
| 892 | |
| 893 | /* Reference to checksum algorithm driver via cryptoapi */ |
| 894 | struct crypto_shash *s_chksum_driver; |
| 895 | }; |
| 896 | |
| 897 | /* For write statistics. Suppose sector size is 512 bytes, |
| 898 | * and the return value is in kbytes. s is of struct f2fs_sb_info. |
| 899 | */ |
| 900 | #define BD_PART_WRITTEN(s) \ |
| 901 | (((u64)part_stat_read(s->sb->s_bdev->bd_part, sectors[1]) - \ |
| 902 | s->sectors_written_start) >> 1) |
| 903 | |
| 904 | static inline void f2fs_update_time(struct f2fs_sb_info *sbi, int type) |
| 905 | { |
| 906 | sbi->last_time[type] = jiffies; |
| 907 | } |
| 908 | |
| 909 | static inline bool f2fs_time_over(struct f2fs_sb_info *sbi, int type) |
| 910 | { |
| 911 | struct timespec ts = {sbi->interval_time[type], 0}; |
| 912 | unsigned long interval = timespec_to_jiffies(&ts); |
| 913 | |
| 914 | return time_after(jiffies, sbi->last_time[type] + interval); |
| 915 | } |
| 916 | |
| 917 | static inline bool is_idle(struct f2fs_sb_info *sbi) |
| 918 | { |
| 919 | struct block_device *bdev = sbi->sb->s_bdev; |
| 920 | struct request_queue *q = bdev_get_queue(bdev); |
| 921 | struct request_list *rl = &q->root_rl; |
| 922 | |
| 923 | if (rl->count[BLK_RW_SYNC] || rl->count[BLK_RW_ASYNC]) |
| 924 | return 0; |
| 925 | |
| 926 | return f2fs_time_over(sbi, REQ_TIME); |
| 927 | } |
| 928 | |
| 929 | /* |
| 930 | * Inline functions |
| 931 | */ |
| 932 | static inline u32 f2fs_crc32(struct f2fs_sb_info *sbi, const void *address, |
| 933 | unsigned int length) |
| 934 | { |
| 935 | SHASH_DESC_ON_STACK(shash, sbi->s_chksum_driver); |
| 936 | u32 *ctx = (u32 *)shash_desc_ctx(shash); |
| 937 | int err; |
| 938 | |
| 939 | shash->tfm = sbi->s_chksum_driver; |
| 940 | shash->flags = 0; |
| 941 | *ctx = F2FS_SUPER_MAGIC; |
| 942 | |
| 943 | err = crypto_shash_update(shash, address, length); |
| 944 | BUG_ON(err); |
| 945 | |
| 946 | return *ctx; |
| 947 | } |
| 948 | |
| 949 | static inline bool f2fs_crc_valid(struct f2fs_sb_info *sbi, __u32 blk_crc, |
| 950 | void *buf, size_t buf_size) |
| 951 | { |
| 952 | return f2fs_crc32(sbi, buf, buf_size) == blk_crc; |
| 953 | } |
| 954 | |
| 955 | static inline struct f2fs_inode_info *F2FS_I(struct inode *inode) |
| 956 | { |
| 957 | return container_of(inode, struct f2fs_inode_info, vfs_inode); |
| 958 | } |
| 959 | |
| 960 | static inline struct f2fs_sb_info *F2FS_SB(struct super_block *sb) |
| 961 | { |
| 962 | return sb->s_fs_info; |
| 963 | } |
| 964 | |
| 965 | static inline struct f2fs_sb_info *F2FS_I_SB(struct inode *inode) |
| 966 | { |
| 967 | return F2FS_SB(inode->i_sb); |
| 968 | } |
| 969 | |
| 970 | static inline struct f2fs_sb_info *F2FS_M_SB(struct address_space *mapping) |
| 971 | { |
| 972 | return F2FS_I_SB(mapping->host); |
| 973 | } |
| 974 | |
| 975 | static inline struct f2fs_sb_info *F2FS_P_SB(struct page *page) |
| 976 | { |
| 977 | return F2FS_M_SB(page->mapping); |
| 978 | } |
| 979 | |
| 980 | static inline struct f2fs_super_block *F2FS_RAW_SUPER(struct f2fs_sb_info *sbi) |
| 981 | { |
| 982 | return (struct f2fs_super_block *)(sbi->raw_super); |
| 983 | } |
| 984 | |
| 985 | static inline struct f2fs_checkpoint *F2FS_CKPT(struct f2fs_sb_info *sbi) |
| 986 | { |
| 987 | return (struct f2fs_checkpoint *)(sbi->ckpt); |
| 988 | } |
| 989 | |
| 990 | static inline struct f2fs_node *F2FS_NODE(struct page *page) |
| 991 | { |
| 992 | return (struct f2fs_node *)page_address(page); |
| 993 | } |
| 994 | |
| 995 | static inline struct f2fs_inode *F2FS_INODE(struct page *page) |
| 996 | { |
| 997 | return &((struct f2fs_node *)page_address(page))->i; |
| 998 | } |
| 999 | |
| 1000 | static inline struct f2fs_nm_info *NM_I(struct f2fs_sb_info *sbi) |
| 1001 | { |
| 1002 | return (struct f2fs_nm_info *)(sbi->nm_info); |
| 1003 | } |
| 1004 | |
| 1005 | static inline struct f2fs_sm_info *SM_I(struct f2fs_sb_info *sbi) |
| 1006 | { |
| 1007 | return (struct f2fs_sm_info *)(sbi->sm_info); |
| 1008 | } |
| 1009 | |
| 1010 | static inline struct sit_info *SIT_I(struct f2fs_sb_info *sbi) |
| 1011 | { |
| 1012 | return (struct sit_info *)(SM_I(sbi)->sit_info); |
| 1013 | } |
| 1014 | |
| 1015 | static inline struct free_segmap_info *FREE_I(struct f2fs_sb_info *sbi) |
| 1016 | { |
| 1017 | return (struct free_segmap_info *)(SM_I(sbi)->free_info); |
| 1018 | } |
| 1019 | |
| 1020 | static inline struct dirty_seglist_info *DIRTY_I(struct f2fs_sb_info *sbi) |
| 1021 | { |
| 1022 | return (struct dirty_seglist_info *)(SM_I(sbi)->dirty_info); |
| 1023 | } |
| 1024 | |
| 1025 | static inline struct address_space *META_MAPPING(struct f2fs_sb_info *sbi) |
| 1026 | { |
| 1027 | return sbi->meta_inode->i_mapping; |
| 1028 | } |
| 1029 | |
| 1030 | static inline struct address_space *NODE_MAPPING(struct f2fs_sb_info *sbi) |
| 1031 | { |
| 1032 | return sbi->node_inode->i_mapping; |
| 1033 | } |
| 1034 | |
| 1035 | static inline bool is_sbi_flag_set(struct f2fs_sb_info *sbi, unsigned int type) |
| 1036 | { |
| 1037 | return sbi->s_flag & (0x01 << type); |
| 1038 | } |
| 1039 | |
| 1040 | static inline void set_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| 1041 | { |
| 1042 | sbi->s_flag |= (0x01 << type); |
| 1043 | } |
| 1044 | |
| 1045 | static inline void clear_sbi_flag(struct f2fs_sb_info *sbi, unsigned int type) |
| 1046 | { |
| 1047 | sbi->s_flag &= ~(0x01 << type); |
| 1048 | } |
| 1049 | |
| 1050 | static inline unsigned long long cur_cp_version(struct f2fs_checkpoint *cp) |
| 1051 | { |
| 1052 | return le64_to_cpu(cp->checkpoint_ver); |
| 1053 | } |
| 1054 | |
| 1055 | static inline bool is_set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1056 | { |
| 1057 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1058 | return ckpt_flags & f; |
| 1059 | } |
| 1060 | |
| 1061 | static inline void set_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1062 | { |
| 1063 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1064 | ckpt_flags |= f; |
| 1065 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| 1066 | } |
| 1067 | |
| 1068 | static inline void clear_ckpt_flags(struct f2fs_checkpoint *cp, unsigned int f) |
| 1069 | { |
| 1070 | unsigned int ckpt_flags = le32_to_cpu(cp->ckpt_flags); |
| 1071 | ckpt_flags &= (~f); |
| 1072 | cp->ckpt_flags = cpu_to_le32(ckpt_flags); |
| 1073 | } |
| 1074 | |
| 1075 | static inline bool f2fs_discard_en(struct f2fs_sb_info *sbi) |
| 1076 | { |
| 1077 | struct request_queue *q = bdev_get_queue(sbi->sb->s_bdev); |
| 1078 | |
| 1079 | return blk_queue_discard(q); |
| 1080 | } |
| 1081 | |
| 1082 | static inline void f2fs_lock_op(struct f2fs_sb_info *sbi) |
| 1083 | { |
| 1084 | down_read(&sbi->cp_rwsem); |
| 1085 | } |
| 1086 | |
| 1087 | static inline void f2fs_unlock_op(struct f2fs_sb_info *sbi) |
| 1088 | { |
| 1089 | up_read(&sbi->cp_rwsem); |
| 1090 | } |
| 1091 | |
| 1092 | static inline void f2fs_lock_all(struct f2fs_sb_info *sbi) |
| 1093 | { |
| 1094 | down_write(&sbi->cp_rwsem); |
| 1095 | } |
| 1096 | |
| 1097 | static inline void f2fs_unlock_all(struct f2fs_sb_info *sbi) |
| 1098 | { |
| 1099 | up_write(&sbi->cp_rwsem); |
| 1100 | } |
| 1101 | |
| 1102 | static inline int __get_cp_reason(struct f2fs_sb_info *sbi) |
| 1103 | { |
| 1104 | int reason = CP_SYNC; |
| 1105 | |
| 1106 | if (test_opt(sbi, FASTBOOT)) |
| 1107 | reason = CP_FASTBOOT; |
| 1108 | if (is_sbi_flag_set(sbi, SBI_IS_CLOSE)) |
| 1109 | reason = CP_UMOUNT; |
| 1110 | return reason; |
| 1111 | } |
| 1112 | |
| 1113 | static inline bool __remain_node_summaries(int reason) |
| 1114 | { |
| 1115 | return (reason == CP_UMOUNT || reason == CP_FASTBOOT); |
| 1116 | } |
| 1117 | |
| 1118 | static inline bool __exist_node_summaries(struct f2fs_sb_info *sbi) |
| 1119 | { |
| 1120 | return (is_set_ckpt_flags(F2FS_CKPT(sbi), CP_UMOUNT_FLAG) || |
| 1121 | is_set_ckpt_flags(F2FS_CKPT(sbi), CP_FASTBOOT_FLAG)); |
| 1122 | } |
| 1123 | |
| 1124 | /* |
| 1125 | * Check whether the given nid is within node id range. |
| 1126 | */ |
| 1127 | static inline int check_nid_range(struct f2fs_sb_info *sbi, nid_t nid) |
| 1128 | { |
| 1129 | if (unlikely(nid < F2FS_ROOT_INO(sbi))) |
| 1130 | return -EINVAL; |
| 1131 | if (unlikely(nid >= NM_I(sbi)->max_nid)) |
| 1132 | return -EINVAL; |
| 1133 | return 0; |
| 1134 | } |
| 1135 | |
| 1136 | #define F2FS_DEFAULT_ALLOCATED_BLOCKS 1 |
| 1137 | |
| 1138 | /* |
| 1139 | * Check whether the inode has blocks or not |
| 1140 | */ |
| 1141 | static inline int F2FS_HAS_BLOCKS(struct inode *inode) |
| 1142 | { |
| 1143 | if (F2FS_I(inode)->i_xattr_nid) |
| 1144 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS + 1; |
| 1145 | else |
| 1146 | return inode->i_blocks > F2FS_DEFAULT_ALLOCATED_BLOCKS; |
| 1147 | } |
| 1148 | |
| 1149 | static inline bool f2fs_has_xattr_block(unsigned int ofs) |
| 1150 | { |
| 1151 | return ofs == XATTR_NODE_OFFSET; |
| 1152 | } |
| 1153 | |
| 1154 | static inline void f2fs_i_blocks_write(struct inode *, blkcnt_t, bool); |
| 1155 | static inline bool inc_valid_block_count(struct f2fs_sb_info *sbi, |
| 1156 | struct inode *inode, blkcnt_t *count) |
| 1157 | { |
| 1158 | blkcnt_t diff; |
| 1159 | |
| 1160 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1161 | if (time_to_inject(FAULT_BLOCK)) |
| 1162 | return false; |
| 1163 | #endif |
| 1164 | /* |
| 1165 | * let's increase this in prior to actual block count change in order |
| 1166 | * for f2fs_sync_file to avoid data races when deciding checkpoint. |
| 1167 | */ |
| 1168 | percpu_counter_add(&sbi->alloc_valid_block_count, (*count)); |
| 1169 | |
| 1170 | spin_lock(&sbi->stat_lock); |
| 1171 | sbi->total_valid_block_count += (block_t)(*count); |
| 1172 | if (unlikely(sbi->total_valid_block_count > sbi->user_block_count)) { |
| 1173 | diff = sbi->total_valid_block_count - sbi->user_block_count; |
| 1174 | *count -= diff; |
| 1175 | sbi->total_valid_block_count = sbi->user_block_count; |
| 1176 | if (!*count) { |
| 1177 | spin_unlock(&sbi->stat_lock); |
| 1178 | percpu_counter_sub(&sbi->alloc_valid_block_count, diff); |
| 1179 | return false; |
| 1180 | } |
| 1181 | } |
| 1182 | spin_unlock(&sbi->stat_lock); |
| 1183 | |
| 1184 | f2fs_i_blocks_write(inode, *count, true); |
| 1185 | return true; |
| 1186 | } |
| 1187 | |
| 1188 | static inline void dec_valid_block_count(struct f2fs_sb_info *sbi, |
| 1189 | struct inode *inode, |
| 1190 | blkcnt_t count) |
| 1191 | { |
| 1192 | spin_lock(&sbi->stat_lock); |
| 1193 | f2fs_bug_on(sbi, sbi->total_valid_block_count < (block_t) count); |
| 1194 | f2fs_bug_on(sbi, inode->i_blocks < count); |
| 1195 | sbi->total_valid_block_count -= (block_t)count; |
| 1196 | spin_unlock(&sbi->stat_lock); |
| 1197 | f2fs_i_blocks_write(inode, count, false); |
| 1198 | } |
| 1199 | |
| 1200 | static inline void inc_page_count(struct f2fs_sb_info *sbi, int count_type) |
| 1201 | { |
| 1202 | percpu_counter_inc(&sbi->nr_pages[count_type]); |
| 1203 | set_sbi_flag(sbi, SBI_IS_DIRTY); |
| 1204 | } |
| 1205 | |
| 1206 | static inline void inode_inc_dirty_pages(struct inode *inode) |
| 1207 | { |
| 1208 | percpu_counter_inc(&F2FS_I(inode)->dirty_pages); |
| 1209 | inc_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| 1210 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| 1211 | } |
| 1212 | |
| 1213 | static inline void dec_page_count(struct f2fs_sb_info *sbi, int count_type) |
| 1214 | { |
| 1215 | percpu_counter_dec(&sbi->nr_pages[count_type]); |
| 1216 | } |
| 1217 | |
| 1218 | static inline void inode_dec_dirty_pages(struct inode *inode) |
| 1219 | { |
| 1220 | if (!S_ISDIR(inode->i_mode) && !S_ISREG(inode->i_mode) && |
| 1221 | !S_ISLNK(inode->i_mode)) |
| 1222 | return; |
| 1223 | |
| 1224 | percpu_counter_dec(&F2FS_I(inode)->dirty_pages); |
| 1225 | dec_page_count(F2FS_I_SB(inode), S_ISDIR(inode->i_mode) ? |
| 1226 | F2FS_DIRTY_DENTS : F2FS_DIRTY_DATA); |
| 1227 | } |
| 1228 | |
| 1229 | static inline s64 get_pages(struct f2fs_sb_info *sbi, int count_type) |
| 1230 | { |
| 1231 | return percpu_counter_sum_positive(&sbi->nr_pages[count_type]); |
| 1232 | } |
| 1233 | |
| 1234 | static inline s64 get_dirty_pages(struct inode *inode) |
| 1235 | { |
| 1236 | return percpu_counter_sum_positive(&F2FS_I(inode)->dirty_pages); |
| 1237 | } |
| 1238 | |
| 1239 | static inline int get_blocktype_secs(struct f2fs_sb_info *sbi, int block_type) |
| 1240 | { |
| 1241 | unsigned int pages_per_sec = sbi->segs_per_sec * sbi->blocks_per_seg; |
| 1242 | unsigned int segs = (get_pages(sbi, block_type) + pages_per_sec - 1) >> |
| 1243 | sbi->log_blocks_per_seg; |
| 1244 | |
| 1245 | return segs / sbi->segs_per_sec; |
| 1246 | } |
| 1247 | |
| 1248 | static inline block_t valid_user_blocks(struct f2fs_sb_info *sbi) |
| 1249 | { |
| 1250 | return sbi->total_valid_block_count; |
| 1251 | } |
| 1252 | |
| 1253 | static inline unsigned long __bitmap_size(struct f2fs_sb_info *sbi, int flag) |
| 1254 | { |
| 1255 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1256 | |
| 1257 | /* return NAT or SIT bitmap */ |
| 1258 | if (flag == NAT_BITMAP) |
| 1259 | return le32_to_cpu(ckpt->nat_ver_bitmap_bytesize); |
| 1260 | else if (flag == SIT_BITMAP) |
| 1261 | return le32_to_cpu(ckpt->sit_ver_bitmap_bytesize); |
| 1262 | |
| 1263 | return 0; |
| 1264 | } |
| 1265 | |
| 1266 | static inline block_t __cp_payload(struct f2fs_sb_info *sbi) |
| 1267 | { |
| 1268 | return le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_payload); |
| 1269 | } |
| 1270 | |
| 1271 | static inline void *__bitmap_ptr(struct f2fs_sb_info *sbi, int flag) |
| 1272 | { |
| 1273 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1274 | int offset; |
| 1275 | |
| 1276 | if (__cp_payload(sbi) > 0) { |
| 1277 | if (flag == NAT_BITMAP) |
| 1278 | return &ckpt->sit_nat_version_bitmap; |
| 1279 | else |
| 1280 | return (unsigned char *)ckpt + F2FS_BLKSIZE; |
| 1281 | } else { |
| 1282 | offset = (flag == NAT_BITMAP) ? |
| 1283 | le32_to_cpu(ckpt->sit_ver_bitmap_bytesize) : 0; |
| 1284 | return &ckpt->sit_nat_version_bitmap + offset; |
| 1285 | } |
| 1286 | } |
| 1287 | |
| 1288 | static inline block_t __start_cp_addr(struct f2fs_sb_info *sbi) |
| 1289 | { |
| 1290 | block_t start_addr; |
| 1291 | struct f2fs_checkpoint *ckpt = F2FS_CKPT(sbi); |
| 1292 | unsigned long long ckpt_version = cur_cp_version(ckpt); |
| 1293 | |
| 1294 | start_addr = le32_to_cpu(F2FS_RAW_SUPER(sbi)->cp_blkaddr); |
| 1295 | |
| 1296 | /* |
| 1297 | * odd numbered checkpoint should at cp segment 0 |
| 1298 | * and even segment must be at cp segment 1 |
| 1299 | */ |
| 1300 | if (!(ckpt_version & 1)) |
| 1301 | start_addr += sbi->blocks_per_seg; |
| 1302 | |
| 1303 | return start_addr; |
| 1304 | } |
| 1305 | |
| 1306 | static inline block_t __start_sum_addr(struct f2fs_sb_info *sbi) |
| 1307 | { |
| 1308 | return le32_to_cpu(F2FS_CKPT(sbi)->cp_pack_start_sum); |
| 1309 | } |
| 1310 | |
| 1311 | static inline bool inc_valid_node_count(struct f2fs_sb_info *sbi, |
| 1312 | struct inode *inode) |
| 1313 | { |
| 1314 | block_t valid_block_count; |
| 1315 | unsigned int valid_node_count; |
| 1316 | |
| 1317 | spin_lock(&sbi->stat_lock); |
| 1318 | |
| 1319 | valid_block_count = sbi->total_valid_block_count + 1; |
| 1320 | if (unlikely(valid_block_count > sbi->user_block_count)) { |
| 1321 | spin_unlock(&sbi->stat_lock); |
| 1322 | return false; |
| 1323 | } |
| 1324 | |
| 1325 | valid_node_count = sbi->total_valid_node_count + 1; |
| 1326 | if (unlikely(valid_node_count > sbi->total_node_count)) { |
| 1327 | spin_unlock(&sbi->stat_lock); |
| 1328 | return false; |
| 1329 | } |
| 1330 | |
| 1331 | if (inode) |
| 1332 | f2fs_i_blocks_write(inode, 1, true); |
| 1333 | |
| 1334 | sbi->total_valid_node_count++; |
| 1335 | sbi->total_valid_block_count++; |
| 1336 | spin_unlock(&sbi->stat_lock); |
| 1337 | |
| 1338 | percpu_counter_inc(&sbi->alloc_valid_block_count); |
| 1339 | return true; |
| 1340 | } |
| 1341 | |
| 1342 | static inline void dec_valid_node_count(struct f2fs_sb_info *sbi, |
| 1343 | struct inode *inode) |
| 1344 | { |
| 1345 | spin_lock(&sbi->stat_lock); |
| 1346 | |
| 1347 | f2fs_bug_on(sbi, !sbi->total_valid_block_count); |
| 1348 | f2fs_bug_on(sbi, !sbi->total_valid_node_count); |
| 1349 | f2fs_bug_on(sbi, !inode->i_blocks); |
| 1350 | |
| 1351 | f2fs_i_blocks_write(inode, 1, false); |
| 1352 | sbi->total_valid_node_count--; |
| 1353 | sbi->total_valid_block_count--; |
| 1354 | |
| 1355 | spin_unlock(&sbi->stat_lock); |
| 1356 | } |
| 1357 | |
| 1358 | static inline unsigned int valid_node_count(struct f2fs_sb_info *sbi) |
| 1359 | { |
| 1360 | return sbi->total_valid_node_count; |
| 1361 | } |
| 1362 | |
| 1363 | static inline void inc_valid_inode_count(struct f2fs_sb_info *sbi) |
| 1364 | { |
| 1365 | percpu_counter_inc(&sbi->total_valid_inode_count); |
| 1366 | } |
| 1367 | |
| 1368 | static inline void dec_valid_inode_count(struct f2fs_sb_info *sbi) |
| 1369 | { |
| 1370 | percpu_counter_dec(&sbi->total_valid_inode_count); |
| 1371 | } |
| 1372 | |
| 1373 | static inline s64 valid_inode_count(struct f2fs_sb_info *sbi) |
| 1374 | { |
| 1375 | return percpu_counter_sum_positive(&sbi->total_valid_inode_count); |
| 1376 | } |
| 1377 | |
| 1378 | static inline struct page *f2fs_grab_cache_page(struct address_space *mapping, |
| 1379 | pgoff_t index, bool for_write) |
| 1380 | { |
| 1381 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1382 | struct page *page = find_lock_page(mapping, index); |
| 1383 | if (page) |
| 1384 | return page; |
| 1385 | |
| 1386 | if (time_to_inject(FAULT_PAGE_ALLOC)) |
| 1387 | return NULL; |
| 1388 | #endif |
| 1389 | if (!for_write) |
| 1390 | return grab_cache_page(mapping, index); |
| 1391 | return grab_cache_page_write_begin(mapping, index, AOP_FLAG_NOFS); |
| 1392 | } |
| 1393 | |
| 1394 | static inline void f2fs_copy_page(struct page *src, struct page *dst) |
| 1395 | { |
| 1396 | char *src_kaddr = kmap(src); |
| 1397 | char *dst_kaddr = kmap(dst); |
| 1398 | |
| 1399 | memcpy(dst_kaddr, src_kaddr, PAGE_SIZE); |
| 1400 | kunmap(dst); |
| 1401 | kunmap(src); |
| 1402 | } |
| 1403 | |
| 1404 | static inline void f2fs_put_page(struct page *page, int unlock) |
| 1405 | { |
| 1406 | if (!page) |
| 1407 | return; |
| 1408 | |
| 1409 | if (unlock) { |
| 1410 | f2fs_bug_on(F2FS_P_SB(page), !PageLocked(page)); |
| 1411 | unlock_page(page); |
| 1412 | } |
| 1413 | put_page(page); |
| 1414 | } |
| 1415 | |
| 1416 | static inline void f2fs_put_dnode(struct dnode_of_data *dn) |
| 1417 | { |
| 1418 | if (dn->node_page) |
| 1419 | f2fs_put_page(dn->node_page, 1); |
| 1420 | if (dn->inode_page && dn->node_page != dn->inode_page) |
| 1421 | f2fs_put_page(dn->inode_page, 0); |
| 1422 | dn->node_page = NULL; |
| 1423 | dn->inode_page = NULL; |
| 1424 | } |
| 1425 | |
| 1426 | static inline struct kmem_cache *f2fs_kmem_cache_create(const char *name, |
| 1427 | size_t size) |
| 1428 | { |
| 1429 | return kmem_cache_create(name, size, 0, SLAB_RECLAIM_ACCOUNT, NULL); |
| 1430 | } |
| 1431 | |
| 1432 | static inline void *f2fs_kmem_cache_alloc(struct kmem_cache *cachep, |
| 1433 | gfp_t flags) |
| 1434 | { |
| 1435 | void *entry; |
| 1436 | |
| 1437 | entry = kmem_cache_alloc(cachep, flags); |
| 1438 | if (!entry) |
| 1439 | entry = kmem_cache_alloc(cachep, flags | __GFP_NOFAIL); |
| 1440 | return entry; |
| 1441 | } |
| 1442 | |
| 1443 | static inline struct bio *f2fs_bio_alloc(int npages) |
| 1444 | { |
| 1445 | struct bio *bio; |
| 1446 | |
| 1447 | /* No failure on bio allocation */ |
| 1448 | bio = bio_alloc(GFP_NOIO, npages); |
| 1449 | if (!bio) |
| 1450 | bio = bio_alloc(GFP_NOIO | __GFP_NOFAIL, npages); |
| 1451 | return bio; |
| 1452 | } |
| 1453 | |
| 1454 | static inline void f2fs_radix_tree_insert(struct radix_tree_root *root, |
| 1455 | unsigned long index, void *item) |
| 1456 | { |
| 1457 | while (radix_tree_insert(root, index, item)) |
| 1458 | cond_resched(); |
| 1459 | } |
| 1460 | |
| 1461 | #define RAW_IS_INODE(p) ((p)->footer.nid == (p)->footer.ino) |
| 1462 | |
| 1463 | static inline bool IS_INODE(struct page *page) |
| 1464 | { |
| 1465 | struct f2fs_node *p = F2FS_NODE(page); |
| 1466 | return RAW_IS_INODE(p); |
| 1467 | } |
| 1468 | |
| 1469 | static inline __le32 *blkaddr_in_node(struct f2fs_node *node) |
| 1470 | { |
| 1471 | return RAW_IS_INODE(node) ? node->i.i_addr : node->dn.addr; |
| 1472 | } |
| 1473 | |
| 1474 | static inline block_t datablock_addr(struct page *node_page, |
| 1475 | unsigned int offset) |
| 1476 | { |
| 1477 | struct f2fs_node *raw_node; |
| 1478 | __le32 *addr_array; |
| 1479 | raw_node = F2FS_NODE(node_page); |
| 1480 | addr_array = blkaddr_in_node(raw_node); |
| 1481 | return le32_to_cpu(addr_array[offset]); |
| 1482 | } |
| 1483 | |
| 1484 | static inline int f2fs_test_bit(unsigned int nr, char *addr) |
| 1485 | { |
| 1486 | int mask; |
| 1487 | |
| 1488 | addr += (nr >> 3); |
| 1489 | mask = 1 << (7 - (nr & 0x07)); |
| 1490 | return mask & *addr; |
| 1491 | } |
| 1492 | |
| 1493 | static inline void f2fs_set_bit(unsigned int nr, char *addr) |
| 1494 | { |
| 1495 | int mask; |
| 1496 | |
| 1497 | addr += (nr >> 3); |
| 1498 | mask = 1 << (7 - (nr & 0x07)); |
| 1499 | *addr |= mask; |
| 1500 | } |
| 1501 | |
| 1502 | static inline void f2fs_clear_bit(unsigned int nr, char *addr) |
| 1503 | { |
| 1504 | int mask; |
| 1505 | |
| 1506 | addr += (nr >> 3); |
| 1507 | mask = 1 << (7 - (nr & 0x07)); |
| 1508 | *addr &= ~mask; |
| 1509 | } |
| 1510 | |
| 1511 | static inline int f2fs_test_and_set_bit(unsigned int nr, char *addr) |
| 1512 | { |
| 1513 | int mask; |
| 1514 | int ret; |
| 1515 | |
| 1516 | addr += (nr >> 3); |
| 1517 | mask = 1 << (7 - (nr & 0x07)); |
| 1518 | ret = mask & *addr; |
| 1519 | *addr |= mask; |
| 1520 | return ret; |
| 1521 | } |
| 1522 | |
| 1523 | static inline int f2fs_test_and_clear_bit(unsigned int nr, char *addr) |
| 1524 | { |
| 1525 | int mask; |
| 1526 | int ret; |
| 1527 | |
| 1528 | addr += (nr >> 3); |
| 1529 | mask = 1 << (7 - (nr & 0x07)); |
| 1530 | ret = mask & *addr; |
| 1531 | *addr &= ~mask; |
| 1532 | return ret; |
| 1533 | } |
| 1534 | |
| 1535 | static inline void f2fs_change_bit(unsigned int nr, char *addr) |
| 1536 | { |
| 1537 | int mask; |
| 1538 | |
| 1539 | addr += (nr >> 3); |
| 1540 | mask = 1 << (7 - (nr & 0x07)); |
| 1541 | *addr ^= mask; |
| 1542 | } |
| 1543 | |
| 1544 | /* used for f2fs_inode_info->flags */ |
| 1545 | enum { |
| 1546 | FI_NEW_INODE, /* indicate newly allocated inode */ |
| 1547 | FI_DIRTY_INODE, /* indicate inode is dirty or not */ |
| 1548 | FI_AUTO_RECOVER, /* indicate inode is recoverable */ |
| 1549 | FI_DIRTY_DIR, /* indicate directory has dirty pages */ |
| 1550 | FI_INC_LINK, /* need to increment i_nlink */ |
| 1551 | FI_ACL_MODE, /* indicate acl mode */ |
| 1552 | FI_NO_ALLOC, /* should not allocate any blocks */ |
| 1553 | FI_FREE_NID, /* free allocated nide */ |
| 1554 | FI_NO_EXTENT, /* not to use the extent cache */ |
| 1555 | FI_INLINE_XATTR, /* used for inline xattr */ |
| 1556 | FI_INLINE_DATA, /* used for inline data*/ |
| 1557 | FI_INLINE_DENTRY, /* used for inline dentry */ |
| 1558 | FI_APPEND_WRITE, /* inode has appended data */ |
| 1559 | FI_UPDATE_WRITE, /* inode has in-place-update data */ |
| 1560 | FI_NEED_IPU, /* used for ipu per file */ |
| 1561 | FI_ATOMIC_FILE, /* indicate atomic file */ |
| 1562 | FI_VOLATILE_FILE, /* indicate volatile file */ |
| 1563 | FI_FIRST_BLOCK_WRITTEN, /* indicate #0 data block was written */ |
| 1564 | FI_DROP_CACHE, /* drop dirty page cache */ |
| 1565 | FI_DATA_EXIST, /* indicate data exists */ |
| 1566 | FI_INLINE_DOTS, /* indicate inline dot dentries */ |
| 1567 | FI_DO_DEFRAG, /* indicate defragment is running */ |
| 1568 | FI_DIRTY_FILE, /* indicate regular/symlink has dirty pages */ |
| 1569 | }; |
| 1570 | |
| 1571 | static inline void __mark_inode_dirty_flag(struct inode *inode, |
| 1572 | int flag, bool set) |
| 1573 | { |
| 1574 | switch (flag) { |
| 1575 | case FI_INLINE_XATTR: |
| 1576 | case FI_INLINE_DATA: |
| 1577 | case FI_INLINE_DENTRY: |
| 1578 | if (set) |
| 1579 | return; |
| 1580 | case FI_DATA_EXIST: |
| 1581 | case FI_INLINE_DOTS: |
| 1582 | f2fs_mark_inode_dirty_sync(inode); |
| 1583 | } |
| 1584 | } |
| 1585 | |
| 1586 | static inline void set_inode_flag(struct inode *inode, int flag) |
| 1587 | { |
| 1588 | if (!test_bit(flag, &F2FS_I(inode)->flags)) |
| 1589 | set_bit(flag, &F2FS_I(inode)->flags); |
| 1590 | __mark_inode_dirty_flag(inode, flag, true); |
| 1591 | } |
| 1592 | |
| 1593 | static inline int is_inode_flag_set(struct inode *inode, int flag) |
| 1594 | { |
| 1595 | return test_bit(flag, &F2FS_I(inode)->flags); |
| 1596 | } |
| 1597 | |
| 1598 | static inline void clear_inode_flag(struct inode *inode, int flag) |
| 1599 | { |
| 1600 | if (test_bit(flag, &F2FS_I(inode)->flags)) |
| 1601 | clear_bit(flag, &F2FS_I(inode)->flags); |
| 1602 | __mark_inode_dirty_flag(inode, flag, false); |
| 1603 | } |
| 1604 | |
| 1605 | static inline void set_acl_inode(struct inode *inode, umode_t mode) |
| 1606 | { |
| 1607 | F2FS_I(inode)->i_acl_mode = mode; |
| 1608 | set_inode_flag(inode, FI_ACL_MODE); |
| 1609 | f2fs_mark_inode_dirty_sync(inode); |
| 1610 | } |
| 1611 | |
| 1612 | static inline void f2fs_i_links_write(struct inode *inode, bool inc) |
| 1613 | { |
| 1614 | if (inc) |
| 1615 | inc_nlink(inode); |
| 1616 | else |
| 1617 | drop_nlink(inode); |
| 1618 | f2fs_mark_inode_dirty_sync(inode); |
| 1619 | } |
| 1620 | |
| 1621 | static inline void f2fs_i_blocks_write(struct inode *inode, |
| 1622 | blkcnt_t diff, bool add) |
| 1623 | { |
| 1624 | bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| 1625 | bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| 1626 | |
| 1627 | inode->i_blocks = add ? inode->i_blocks + diff : |
| 1628 | inode->i_blocks - diff; |
| 1629 | f2fs_mark_inode_dirty_sync(inode); |
| 1630 | if (clean || recover) |
| 1631 | set_inode_flag(inode, FI_AUTO_RECOVER); |
| 1632 | } |
| 1633 | |
| 1634 | static inline void f2fs_i_size_write(struct inode *inode, loff_t i_size) |
| 1635 | { |
| 1636 | bool clean = !is_inode_flag_set(inode, FI_DIRTY_INODE); |
| 1637 | bool recover = is_inode_flag_set(inode, FI_AUTO_RECOVER); |
| 1638 | |
| 1639 | if (i_size_read(inode) == i_size) |
| 1640 | return; |
| 1641 | |
| 1642 | i_size_write(inode, i_size); |
| 1643 | f2fs_mark_inode_dirty_sync(inode); |
| 1644 | if (clean || recover) |
| 1645 | set_inode_flag(inode, FI_AUTO_RECOVER); |
| 1646 | } |
| 1647 | |
| 1648 | static inline bool f2fs_skip_inode_update(struct inode *inode) |
| 1649 | { |
| 1650 | if (!is_inode_flag_set(inode, FI_AUTO_RECOVER)) |
| 1651 | return false; |
| 1652 | return F2FS_I(inode)->last_disk_size == i_size_read(inode); |
| 1653 | } |
| 1654 | |
| 1655 | static inline void f2fs_i_depth_write(struct inode *inode, unsigned int depth) |
| 1656 | { |
| 1657 | F2FS_I(inode)->i_current_depth = depth; |
| 1658 | f2fs_mark_inode_dirty_sync(inode); |
| 1659 | } |
| 1660 | |
| 1661 | static inline void f2fs_i_xnid_write(struct inode *inode, nid_t xnid) |
| 1662 | { |
| 1663 | F2FS_I(inode)->i_xattr_nid = xnid; |
| 1664 | f2fs_mark_inode_dirty_sync(inode); |
| 1665 | } |
| 1666 | |
| 1667 | static inline void f2fs_i_pino_write(struct inode *inode, nid_t pino) |
| 1668 | { |
| 1669 | F2FS_I(inode)->i_pino = pino; |
| 1670 | f2fs_mark_inode_dirty_sync(inode); |
| 1671 | } |
| 1672 | |
| 1673 | static inline void get_inline_info(struct inode *inode, struct f2fs_inode *ri) |
| 1674 | { |
| 1675 | struct f2fs_inode_info *fi = F2FS_I(inode); |
| 1676 | |
| 1677 | if (ri->i_inline & F2FS_INLINE_XATTR) |
| 1678 | set_bit(FI_INLINE_XATTR, &fi->flags); |
| 1679 | if (ri->i_inline & F2FS_INLINE_DATA) |
| 1680 | set_bit(FI_INLINE_DATA, &fi->flags); |
| 1681 | if (ri->i_inline & F2FS_INLINE_DENTRY) |
| 1682 | set_bit(FI_INLINE_DENTRY, &fi->flags); |
| 1683 | if (ri->i_inline & F2FS_DATA_EXIST) |
| 1684 | set_bit(FI_DATA_EXIST, &fi->flags); |
| 1685 | if (ri->i_inline & F2FS_INLINE_DOTS) |
| 1686 | set_bit(FI_INLINE_DOTS, &fi->flags); |
| 1687 | } |
| 1688 | |
| 1689 | static inline void set_raw_inline(struct inode *inode, struct f2fs_inode *ri) |
| 1690 | { |
| 1691 | ri->i_inline = 0; |
| 1692 | |
| 1693 | if (is_inode_flag_set(inode, FI_INLINE_XATTR)) |
| 1694 | ri->i_inline |= F2FS_INLINE_XATTR; |
| 1695 | if (is_inode_flag_set(inode, FI_INLINE_DATA)) |
| 1696 | ri->i_inline |= F2FS_INLINE_DATA; |
| 1697 | if (is_inode_flag_set(inode, FI_INLINE_DENTRY)) |
| 1698 | ri->i_inline |= F2FS_INLINE_DENTRY; |
| 1699 | if (is_inode_flag_set(inode, FI_DATA_EXIST)) |
| 1700 | ri->i_inline |= F2FS_DATA_EXIST; |
| 1701 | if (is_inode_flag_set(inode, FI_INLINE_DOTS)) |
| 1702 | ri->i_inline |= F2FS_INLINE_DOTS; |
| 1703 | } |
| 1704 | |
| 1705 | static inline int f2fs_has_inline_xattr(struct inode *inode) |
| 1706 | { |
| 1707 | return is_inode_flag_set(inode, FI_INLINE_XATTR); |
| 1708 | } |
| 1709 | |
| 1710 | static inline unsigned int addrs_per_inode(struct inode *inode) |
| 1711 | { |
| 1712 | if (f2fs_has_inline_xattr(inode)) |
| 1713 | return DEF_ADDRS_PER_INODE - F2FS_INLINE_XATTR_ADDRS; |
| 1714 | return DEF_ADDRS_PER_INODE; |
| 1715 | } |
| 1716 | |
| 1717 | static inline void *inline_xattr_addr(struct page *page) |
| 1718 | { |
| 1719 | struct f2fs_inode *ri = F2FS_INODE(page); |
| 1720 | return (void *)&(ri->i_addr[DEF_ADDRS_PER_INODE - |
| 1721 | F2FS_INLINE_XATTR_ADDRS]); |
| 1722 | } |
| 1723 | |
| 1724 | static inline int inline_xattr_size(struct inode *inode) |
| 1725 | { |
| 1726 | if (f2fs_has_inline_xattr(inode)) |
| 1727 | return F2FS_INLINE_XATTR_ADDRS << 2; |
| 1728 | else |
| 1729 | return 0; |
| 1730 | } |
| 1731 | |
| 1732 | static inline int f2fs_has_inline_data(struct inode *inode) |
| 1733 | { |
| 1734 | return is_inode_flag_set(inode, FI_INLINE_DATA); |
| 1735 | } |
| 1736 | |
| 1737 | static inline void f2fs_clear_inline_inode(struct inode *inode) |
| 1738 | { |
| 1739 | clear_inode_flag(inode, FI_INLINE_DATA); |
| 1740 | clear_inode_flag(inode, FI_DATA_EXIST); |
| 1741 | } |
| 1742 | |
| 1743 | static inline int f2fs_exist_data(struct inode *inode) |
| 1744 | { |
| 1745 | return is_inode_flag_set(inode, FI_DATA_EXIST); |
| 1746 | } |
| 1747 | |
| 1748 | static inline int f2fs_has_inline_dots(struct inode *inode) |
| 1749 | { |
| 1750 | return is_inode_flag_set(inode, FI_INLINE_DOTS); |
| 1751 | } |
| 1752 | |
| 1753 | static inline bool f2fs_is_atomic_file(struct inode *inode) |
| 1754 | { |
| 1755 | return is_inode_flag_set(inode, FI_ATOMIC_FILE); |
| 1756 | } |
| 1757 | |
| 1758 | static inline bool f2fs_is_volatile_file(struct inode *inode) |
| 1759 | { |
| 1760 | return is_inode_flag_set(inode, FI_VOLATILE_FILE); |
| 1761 | } |
| 1762 | |
| 1763 | static inline bool f2fs_is_first_block_written(struct inode *inode) |
| 1764 | { |
| 1765 | return is_inode_flag_set(inode, FI_FIRST_BLOCK_WRITTEN); |
| 1766 | } |
| 1767 | |
| 1768 | static inline bool f2fs_is_drop_cache(struct inode *inode) |
| 1769 | { |
| 1770 | return is_inode_flag_set(inode, FI_DROP_CACHE); |
| 1771 | } |
| 1772 | |
| 1773 | static inline void *inline_data_addr(struct page *page) |
| 1774 | { |
| 1775 | struct f2fs_inode *ri = F2FS_INODE(page); |
| 1776 | return (void *)&(ri->i_addr[1]); |
| 1777 | } |
| 1778 | |
| 1779 | static inline int f2fs_has_inline_dentry(struct inode *inode) |
| 1780 | { |
| 1781 | return is_inode_flag_set(inode, FI_INLINE_DENTRY); |
| 1782 | } |
| 1783 | |
| 1784 | static inline void f2fs_dentry_kunmap(struct inode *dir, struct page *page) |
| 1785 | { |
| 1786 | if (!f2fs_has_inline_dentry(dir)) |
| 1787 | kunmap(page); |
| 1788 | } |
| 1789 | |
| 1790 | static inline int is_file(struct inode *inode, int type) |
| 1791 | { |
| 1792 | return F2FS_I(inode)->i_advise & type; |
| 1793 | } |
| 1794 | |
| 1795 | static inline void set_file(struct inode *inode, int type) |
| 1796 | { |
| 1797 | F2FS_I(inode)->i_advise |= type; |
| 1798 | f2fs_mark_inode_dirty_sync(inode); |
| 1799 | } |
| 1800 | |
| 1801 | static inline void clear_file(struct inode *inode, int type) |
| 1802 | { |
| 1803 | F2FS_I(inode)->i_advise &= ~type; |
| 1804 | f2fs_mark_inode_dirty_sync(inode); |
| 1805 | } |
| 1806 | |
| 1807 | static inline int f2fs_readonly(struct super_block *sb) |
| 1808 | { |
| 1809 | return sb->s_flags & MS_RDONLY; |
| 1810 | } |
| 1811 | |
| 1812 | static inline bool f2fs_cp_error(struct f2fs_sb_info *sbi) |
| 1813 | { |
| 1814 | return is_set_ckpt_flags(sbi->ckpt, CP_ERROR_FLAG); |
| 1815 | } |
| 1816 | |
| 1817 | static inline bool is_dot_dotdot(const struct qstr *str) |
| 1818 | { |
| 1819 | if (str->len == 1 && str->name[0] == '.') |
| 1820 | return true; |
| 1821 | |
| 1822 | if (str->len == 2 && str->name[0] == '.' && str->name[1] == '.') |
| 1823 | return true; |
| 1824 | |
| 1825 | return false; |
| 1826 | } |
| 1827 | |
| 1828 | static inline bool f2fs_may_extent_tree(struct inode *inode) |
| 1829 | { |
| 1830 | if (!test_opt(F2FS_I_SB(inode), EXTENT_CACHE) || |
| 1831 | is_inode_flag_set(inode, FI_NO_EXTENT)) |
| 1832 | return false; |
| 1833 | |
| 1834 | return S_ISREG(inode->i_mode); |
| 1835 | } |
| 1836 | |
| 1837 | static inline void *f2fs_kmalloc(size_t size, gfp_t flags) |
| 1838 | { |
| 1839 | #ifdef CONFIG_F2FS_FAULT_INJECTION |
| 1840 | if (time_to_inject(FAULT_KMALLOC)) |
| 1841 | return NULL; |
| 1842 | #endif |
| 1843 | return kmalloc(size, flags); |
| 1844 | } |
| 1845 | |
| 1846 | static inline void *f2fs_kvmalloc(size_t size, gfp_t flags) |
| 1847 | { |
| 1848 | void *ret; |
| 1849 | |
| 1850 | ret = kmalloc(size, flags | __GFP_NOWARN); |
| 1851 | if (!ret) |
| 1852 | ret = __vmalloc(size, flags, PAGE_KERNEL); |
| 1853 | return ret; |
| 1854 | } |
| 1855 | |
| 1856 | static inline void *f2fs_kvzalloc(size_t size, gfp_t flags) |
| 1857 | { |
| 1858 | void *ret; |
| 1859 | |
| 1860 | ret = kzalloc(size, flags | __GFP_NOWARN); |
| 1861 | if (!ret) |
| 1862 | ret = __vmalloc(size, flags | __GFP_ZERO, PAGE_KERNEL); |
| 1863 | return ret; |
| 1864 | } |
| 1865 | |
| 1866 | #define get_inode_mode(i) \ |
| 1867 | ((is_inode_flag_set(i, FI_ACL_MODE)) ? \ |
| 1868 | (F2FS_I(i)->i_acl_mode) : ((i)->i_mode)) |
| 1869 | |
| 1870 | /* get offset of first page in next direct node */ |
| 1871 | #define PGOFS_OF_NEXT_DNODE(pgofs, inode) \ |
| 1872 | ((pgofs < ADDRS_PER_INODE(inode)) ? ADDRS_PER_INODE(inode) : \ |
| 1873 | (pgofs - ADDRS_PER_INODE(inode) + ADDRS_PER_BLOCK) / \ |
| 1874 | ADDRS_PER_BLOCK * ADDRS_PER_BLOCK + ADDRS_PER_INODE(inode)) |
| 1875 | |
| 1876 | /* |
| 1877 | * file.c |
| 1878 | */ |
| 1879 | int f2fs_sync_file(struct file *, loff_t, loff_t, int); |
| 1880 | void truncate_data_blocks(struct dnode_of_data *); |
| 1881 | int truncate_blocks(struct inode *, u64, bool); |
| 1882 | int f2fs_truncate(struct inode *); |
| 1883 | int f2fs_getattr(struct vfsmount *, struct dentry *, struct kstat *); |
| 1884 | int f2fs_setattr(struct dentry *, struct iattr *); |
| 1885 | int truncate_hole(struct inode *, pgoff_t, pgoff_t); |
| 1886 | int truncate_data_blocks_range(struct dnode_of_data *, int); |
| 1887 | long f2fs_ioctl(struct file *, unsigned int, unsigned long); |
| 1888 | long f2fs_compat_ioctl(struct file *, unsigned int, unsigned long); |
| 1889 | |
| 1890 | /* |
| 1891 | * inode.c |
| 1892 | */ |
| 1893 | void f2fs_set_inode_flags(struct inode *); |
| 1894 | struct inode *f2fs_iget(struct super_block *, unsigned long); |
| 1895 | int try_to_free_nats(struct f2fs_sb_info *, int); |
| 1896 | int update_inode(struct inode *, struct page *); |
| 1897 | int update_inode_page(struct inode *); |
| 1898 | int f2fs_write_inode(struct inode *, struct writeback_control *); |
| 1899 | void f2fs_evict_inode(struct inode *); |
| 1900 | void handle_failed_inode(struct inode *); |
| 1901 | |
| 1902 | /* |
| 1903 | * namei.c |
| 1904 | */ |
| 1905 | struct dentry *f2fs_get_parent(struct dentry *child); |
| 1906 | |
| 1907 | /* |
| 1908 | * dir.c |
| 1909 | */ |
| 1910 | extern unsigned char f2fs_filetype_table[F2FS_FT_MAX]; |
| 1911 | void set_de_type(struct f2fs_dir_entry *, umode_t); |
| 1912 | unsigned char get_de_type(struct f2fs_dir_entry *); |
| 1913 | struct f2fs_dir_entry *find_target_dentry(struct fscrypt_name *, |
| 1914 | f2fs_hash_t, int *, struct f2fs_dentry_ptr *); |
| 1915 | bool f2fs_fill_dentries(struct dir_context *, struct f2fs_dentry_ptr *, |
| 1916 | unsigned int, struct fscrypt_str *); |
| 1917 | void do_make_empty_dir(struct inode *, struct inode *, |
| 1918 | struct f2fs_dentry_ptr *); |
| 1919 | struct page *init_inode_metadata(struct inode *, struct inode *, |
| 1920 | const struct qstr *, struct page *); |
| 1921 | void update_parent_metadata(struct inode *, struct inode *, unsigned int); |
| 1922 | int room_for_filename(const void *, int, int); |
| 1923 | void f2fs_drop_nlink(struct inode *, struct inode *); |
| 1924 | struct f2fs_dir_entry *f2fs_find_entry(struct inode *, const struct qstr *, |
| 1925 | struct page **); |
| 1926 | struct f2fs_dir_entry *f2fs_parent_dir(struct inode *, struct page **); |
| 1927 | ino_t f2fs_inode_by_name(struct inode *, const struct qstr *, struct page **); |
| 1928 | void f2fs_set_link(struct inode *, struct f2fs_dir_entry *, |
| 1929 | struct page *, struct inode *); |
| 1930 | int update_dent_inode(struct inode *, struct inode *, const struct qstr *); |
| 1931 | void f2fs_update_dentry(nid_t ino, umode_t mode, struct f2fs_dentry_ptr *, |
| 1932 | const struct qstr *, f2fs_hash_t , unsigned int); |
| 1933 | int f2fs_add_regular_entry(struct inode *, const struct qstr *, |
| 1934 | struct inode *, nid_t, umode_t); |
| 1935 | int __f2fs_add_link(struct inode *, const struct qstr *, struct inode *, nid_t, |
| 1936 | umode_t); |
| 1937 | void f2fs_delete_entry(struct f2fs_dir_entry *, struct page *, struct inode *, |
| 1938 | struct inode *); |
| 1939 | int f2fs_do_tmpfile(struct inode *, struct inode *); |
| 1940 | bool f2fs_empty_dir(struct inode *); |
| 1941 | |
| 1942 | static inline int f2fs_add_link(struct dentry *dentry, struct inode *inode) |
| 1943 | { |
| 1944 | return __f2fs_add_link(d_inode(dentry->d_parent), &dentry->d_name, |
| 1945 | inode, inode->i_ino, inode->i_mode); |
| 1946 | } |
| 1947 | |
| 1948 | /* |
| 1949 | * super.c |
| 1950 | */ |
| 1951 | int f2fs_inode_dirtied(struct inode *); |
| 1952 | void f2fs_inode_synced(struct inode *); |
| 1953 | int f2fs_commit_super(struct f2fs_sb_info *, bool); |
| 1954 | int f2fs_sync_fs(struct super_block *, int); |
| 1955 | extern __printf(3, 4) |
| 1956 | void f2fs_msg(struct super_block *, const char *, const char *, ...); |
| 1957 | int sanity_check_ckpt(struct f2fs_sb_info *sbi); |
| 1958 | |
| 1959 | /* |
| 1960 | * hash.c |
| 1961 | */ |
| 1962 | f2fs_hash_t f2fs_dentry_hash(const struct qstr *); |
| 1963 | |
| 1964 | /* |
| 1965 | * node.c |
| 1966 | */ |
| 1967 | struct dnode_of_data; |
| 1968 | struct node_info; |
| 1969 | |
| 1970 | bool available_free_memory(struct f2fs_sb_info *, int); |
| 1971 | int need_dentry_mark(struct f2fs_sb_info *, nid_t); |
| 1972 | bool is_checkpointed_node(struct f2fs_sb_info *, nid_t); |
| 1973 | bool need_inode_block_update(struct f2fs_sb_info *, nid_t); |
| 1974 | void get_node_info(struct f2fs_sb_info *, nid_t, struct node_info *); |
| 1975 | pgoff_t get_next_page_offset(struct dnode_of_data *, pgoff_t); |
| 1976 | int get_dnode_of_data(struct dnode_of_data *, pgoff_t, int); |
| 1977 | int truncate_inode_blocks(struct inode *, pgoff_t); |
| 1978 | int truncate_xattr_node(struct inode *, struct page *); |
| 1979 | int wait_on_node_pages_writeback(struct f2fs_sb_info *, nid_t); |
| 1980 | int remove_inode_page(struct inode *); |
| 1981 | struct page *new_inode_page(struct inode *); |
| 1982 | struct page *new_node_page(struct dnode_of_data *, unsigned int, struct page *); |
| 1983 | void ra_node_page(struct f2fs_sb_info *, nid_t); |
| 1984 | struct page *get_node_page(struct f2fs_sb_info *, pgoff_t); |
| 1985 | struct page *get_node_page_ra(struct page *, int); |
| 1986 | void move_node_page(struct page *, int); |
| 1987 | int fsync_node_pages(struct f2fs_sb_info *, struct inode *, |
| 1988 | struct writeback_control *, bool); |
| 1989 | int sync_node_pages(struct f2fs_sb_info *, struct writeback_control *); |
| 1990 | void build_free_nids(struct f2fs_sb_info *); |
| 1991 | bool alloc_nid(struct f2fs_sb_info *, nid_t *); |
| 1992 | void alloc_nid_done(struct f2fs_sb_info *, nid_t); |
| 1993 | void alloc_nid_failed(struct f2fs_sb_info *, nid_t); |
| 1994 | int try_to_free_nids(struct f2fs_sb_info *, int); |
| 1995 | void recover_inline_xattr(struct inode *, struct page *); |
| 1996 | void recover_xattr_data(struct inode *, struct page *, block_t); |
| 1997 | int recover_inode_page(struct f2fs_sb_info *, struct page *); |
| 1998 | int restore_node_summary(struct f2fs_sb_info *, unsigned int, |
| 1999 | struct f2fs_summary_block *); |
| 2000 | void flush_nat_entries(struct f2fs_sb_info *); |
| 2001 | int build_node_manager(struct f2fs_sb_info *); |
| 2002 | void destroy_node_manager(struct f2fs_sb_info *); |
| 2003 | int __init create_node_manager_caches(void); |
| 2004 | void destroy_node_manager_caches(void); |
| 2005 | |
| 2006 | /* |
| 2007 | * segment.c |
| 2008 | */ |
| 2009 | void register_inmem_page(struct inode *, struct page *); |
| 2010 | void drop_inmem_pages(struct inode *); |
| 2011 | int commit_inmem_pages(struct inode *); |
| 2012 | void f2fs_balance_fs(struct f2fs_sb_info *, bool); |
| 2013 | void f2fs_balance_fs_bg(struct f2fs_sb_info *); |
| 2014 | int f2fs_issue_flush(struct f2fs_sb_info *); |
| 2015 | int create_flush_cmd_control(struct f2fs_sb_info *); |
| 2016 | void destroy_flush_cmd_control(struct f2fs_sb_info *); |
| 2017 | void invalidate_blocks(struct f2fs_sb_info *, block_t); |
| 2018 | bool is_checkpointed_data(struct f2fs_sb_info *, block_t); |
| 2019 | void refresh_sit_entry(struct f2fs_sb_info *, block_t, block_t); |
| 2020 | void clear_prefree_segments(struct f2fs_sb_info *, struct cp_control *); |
| 2021 | void release_discard_addrs(struct f2fs_sb_info *); |
| 2022 | bool discard_next_dnode(struct f2fs_sb_info *, block_t); |
| 2023 | int npages_for_summary_flush(struct f2fs_sb_info *, bool); |
| 2024 | void allocate_new_segments(struct f2fs_sb_info *); |
| 2025 | int f2fs_trim_fs(struct f2fs_sb_info *, struct fstrim_range *); |
| 2026 | struct page *get_sum_page(struct f2fs_sb_info *, unsigned int); |
| 2027 | void update_meta_page(struct f2fs_sb_info *, void *, block_t); |
| 2028 | void write_meta_page(struct f2fs_sb_info *, struct page *); |
| 2029 | void write_node_page(unsigned int, struct f2fs_io_info *); |
| 2030 | void write_data_page(struct dnode_of_data *, struct f2fs_io_info *); |
| 2031 | void rewrite_data_page(struct f2fs_io_info *); |
| 2032 | void __f2fs_replace_block(struct f2fs_sb_info *, struct f2fs_summary *, |
| 2033 | block_t, block_t, bool, bool); |
| 2034 | void f2fs_replace_block(struct f2fs_sb_info *, struct dnode_of_data *, |
| 2035 | block_t, block_t, unsigned char, bool, bool); |
| 2036 | void allocate_data_block(struct f2fs_sb_info *, struct page *, |
| 2037 | block_t, block_t *, struct f2fs_summary *, int); |
| 2038 | void f2fs_wait_on_page_writeback(struct page *, enum page_type, bool); |
| 2039 | void f2fs_wait_on_encrypted_page_writeback(struct f2fs_sb_info *, block_t); |
| 2040 | void write_data_summaries(struct f2fs_sb_info *, block_t); |
| 2041 | void write_node_summaries(struct f2fs_sb_info *, block_t); |
| 2042 | int lookup_journal_in_cursum(struct f2fs_journal *, int, unsigned int, int); |
| 2043 | void flush_sit_entries(struct f2fs_sb_info *, struct cp_control *); |
| 2044 | int build_segment_manager(struct f2fs_sb_info *); |
| 2045 | void destroy_segment_manager(struct f2fs_sb_info *); |
| 2046 | int __init create_segment_manager_caches(void); |
| 2047 | void destroy_segment_manager_caches(void); |
| 2048 | |
| 2049 | /* |
| 2050 | * checkpoint.c |
| 2051 | */ |
| 2052 | void f2fs_stop_checkpoint(struct f2fs_sb_info *, bool); |
| 2053 | struct page *grab_meta_page(struct f2fs_sb_info *, pgoff_t); |
| 2054 | struct page *get_meta_page(struct f2fs_sb_info *, pgoff_t); |
| 2055 | struct page *get_tmp_page(struct f2fs_sb_info *, pgoff_t); |
| 2056 | bool is_valid_blkaddr(struct f2fs_sb_info *, block_t, int); |
| 2057 | int ra_meta_pages(struct f2fs_sb_info *, block_t, int, int, bool); |
| 2058 | void ra_meta_pages_cond(struct f2fs_sb_info *, pgoff_t); |
| 2059 | long sync_meta_pages(struct f2fs_sb_info *, enum page_type, long); |
| 2060 | void add_ino_entry(struct f2fs_sb_info *, nid_t, int type); |
| 2061 | void remove_ino_entry(struct f2fs_sb_info *, nid_t, int type); |
| 2062 | void release_ino_entry(struct f2fs_sb_info *, bool); |
| 2063 | bool exist_written_data(struct f2fs_sb_info *, nid_t, int); |
| 2064 | int f2fs_sync_inode_meta(struct f2fs_sb_info *); |
| 2065 | int acquire_orphan_inode(struct f2fs_sb_info *); |
| 2066 | void release_orphan_inode(struct f2fs_sb_info *); |
| 2067 | void add_orphan_inode(struct inode *); |
| 2068 | void remove_orphan_inode(struct f2fs_sb_info *, nid_t); |
| 2069 | int recover_orphan_inodes(struct f2fs_sb_info *); |
| 2070 | int get_valid_checkpoint(struct f2fs_sb_info *); |
| 2071 | void update_dirty_page(struct inode *, struct page *); |
| 2072 | void remove_dirty_inode(struct inode *); |
| 2073 | int sync_dirty_inodes(struct f2fs_sb_info *, enum inode_type); |
| 2074 | int write_checkpoint(struct f2fs_sb_info *, struct cp_control *); |
| 2075 | void init_ino_entry_info(struct f2fs_sb_info *); |
| 2076 | int __init create_checkpoint_caches(void); |
| 2077 | void destroy_checkpoint_caches(void); |
| 2078 | |
| 2079 | /* |
| 2080 | * data.c |
| 2081 | */ |
| 2082 | void f2fs_submit_merged_bio(struct f2fs_sb_info *, enum page_type, int); |
| 2083 | void f2fs_submit_merged_bio_cond(struct f2fs_sb_info *, struct inode *, |
| 2084 | struct page *, nid_t, enum page_type, int); |
| 2085 | void f2fs_flush_merged_bios(struct f2fs_sb_info *); |
| 2086 | int f2fs_submit_page_bio(struct f2fs_io_info *); |
| 2087 | void f2fs_submit_page_mbio(struct f2fs_io_info *); |
| 2088 | void set_data_blkaddr(struct dnode_of_data *); |
| 2089 | void f2fs_update_data_blkaddr(struct dnode_of_data *, block_t); |
| 2090 | int reserve_new_blocks(struct dnode_of_data *, blkcnt_t); |
| 2091 | int reserve_new_block(struct dnode_of_data *); |
| 2092 | int f2fs_get_block(struct dnode_of_data *, pgoff_t); |
| 2093 | ssize_t f2fs_preallocate_blocks(struct kiocb *, struct iov_iter *); |
| 2094 | int f2fs_reserve_block(struct dnode_of_data *, pgoff_t); |
| 2095 | struct page *get_read_data_page(struct inode *, pgoff_t, int, bool); |
| 2096 | struct page *find_data_page(struct inode *, pgoff_t); |
| 2097 | struct page *get_lock_data_page(struct inode *, pgoff_t, bool); |
| 2098 | struct page *get_new_data_page(struct inode *, struct page *, pgoff_t, bool); |
| 2099 | int do_write_data_page(struct f2fs_io_info *); |
| 2100 | int f2fs_map_blocks(struct inode *, struct f2fs_map_blocks *, int, int); |
| 2101 | int f2fs_fiemap(struct inode *inode, struct fiemap_extent_info *, u64, u64); |
| 2102 | void f2fs_set_page_dirty_nobuffers(struct page *); |
| 2103 | void f2fs_invalidate_page(struct page *, unsigned int, unsigned int); |
| 2104 | int f2fs_release_page(struct page *, gfp_t); |
| 2105 | |
| 2106 | /* |
| 2107 | * gc.c |
| 2108 | */ |
| 2109 | int start_gc_thread(struct f2fs_sb_info *); |
| 2110 | void stop_gc_thread(struct f2fs_sb_info *); |
| 2111 | block_t start_bidx_of_node(unsigned int, struct inode *); |
| 2112 | int f2fs_gc(struct f2fs_sb_info *, bool); |
| 2113 | void build_gc_manager(struct f2fs_sb_info *); |
| 2114 | |
| 2115 | /* |
| 2116 | * recovery.c |
| 2117 | */ |
| 2118 | int recover_fsync_data(struct f2fs_sb_info *, bool); |
| 2119 | bool space_for_roll_forward(struct f2fs_sb_info *); |
| 2120 | |
| 2121 | /* |
| 2122 | * debug.c |
| 2123 | */ |
| 2124 | #ifdef CONFIG_F2FS_STAT_FS |
| 2125 | struct f2fs_stat_info { |
| 2126 | struct list_head stat_list; |
| 2127 | struct f2fs_sb_info *sbi; |
| 2128 | int all_area_segs, sit_area_segs, nat_area_segs, ssa_area_segs; |
| 2129 | int main_area_segs, main_area_sections, main_area_zones; |
| 2130 | unsigned long long hit_largest, hit_cached, hit_rbtree; |
| 2131 | unsigned long long hit_total, total_ext; |
| 2132 | int ext_tree, zombie_tree, ext_node; |
| 2133 | s64 ndirty_node, ndirty_dent, ndirty_meta, ndirty_data, inmem_pages; |
| 2134 | unsigned int ndirty_dirs, ndirty_files, ndirty_all; |
| 2135 | int nats, dirty_nats, sits, dirty_sits, fnids; |
| 2136 | int total_count, utilization; |
| 2137 | int bg_gc, wb_bios; |
| 2138 | int inline_xattr, inline_inode, inline_dir, orphans; |
| 2139 | unsigned int valid_count, valid_node_count, valid_inode_count; |
| 2140 | unsigned int bimodal, avg_vblocks; |
| 2141 | int util_free, util_valid, util_invalid; |
| 2142 | int rsvd_segs, overp_segs; |
| 2143 | int dirty_count, node_pages, meta_pages; |
| 2144 | int prefree_count, call_count, cp_count, bg_cp_count; |
| 2145 | int tot_segs, node_segs, data_segs, free_segs, free_secs; |
| 2146 | int bg_node_segs, bg_data_segs; |
| 2147 | int tot_blks, data_blks, node_blks; |
| 2148 | int bg_data_blks, bg_node_blks; |
| 2149 | int curseg[NR_CURSEG_TYPE]; |
| 2150 | int cursec[NR_CURSEG_TYPE]; |
| 2151 | int curzone[NR_CURSEG_TYPE]; |
| 2152 | |
| 2153 | unsigned int segment_count[2]; |
| 2154 | unsigned int block_count[2]; |
| 2155 | unsigned int inplace_count; |
| 2156 | unsigned long long base_mem, cache_mem, page_mem; |
| 2157 | }; |
| 2158 | |
| 2159 | static inline struct f2fs_stat_info *F2FS_STAT(struct f2fs_sb_info *sbi) |
| 2160 | { |
| 2161 | return (struct f2fs_stat_info *)sbi->stat_info; |
| 2162 | } |
| 2163 | |
| 2164 | #define stat_inc_cp_count(si) ((si)->cp_count++) |
| 2165 | #define stat_inc_bg_cp_count(si) ((si)->bg_cp_count++) |
| 2166 | #define stat_inc_call_count(si) ((si)->call_count++) |
| 2167 | #define stat_inc_bggc_count(sbi) ((sbi)->bg_gc++) |
| 2168 | #define stat_inc_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]++) |
| 2169 | #define stat_dec_dirty_inode(sbi, type) ((sbi)->ndirty_inode[type]--) |
| 2170 | #define stat_inc_total_hit(sbi) (atomic64_inc(&(sbi)->total_hit_ext)) |
| 2171 | #define stat_inc_rbtree_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_rbtree)) |
| 2172 | #define stat_inc_largest_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_largest)) |
| 2173 | #define stat_inc_cached_node_hit(sbi) (atomic64_inc(&(sbi)->read_hit_cached)) |
| 2174 | #define stat_inc_inline_xattr(inode) \ |
| 2175 | do { \ |
| 2176 | if (f2fs_has_inline_xattr(inode)) \ |
| 2177 | (atomic_inc(&F2FS_I_SB(inode)->inline_xattr)); \ |
| 2178 | } while (0) |
| 2179 | #define stat_dec_inline_xattr(inode) \ |
| 2180 | do { \ |
| 2181 | if (f2fs_has_inline_xattr(inode)) \ |
| 2182 | (atomic_dec(&F2FS_I_SB(inode)->inline_xattr)); \ |
| 2183 | } while (0) |
| 2184 | #define stat_inc_inline_inode(inode) \ |
| 2185 | do { \ |
| 2186 | if (f2fs_has_inline_data(inode)) \ |
| 2187 | (atomic_inc(&F2FS_I_SB(inode)->inline_inode)); \ |
| 2188 | } while (0) |
| 2189 | #define stat_dec_inline_inode(inode) \ |
| 2190 | do { \ |
| 2191 | if (f2fs_has_inline_data(inode)) \ |
| 2192 | (atomic_dec(&F2FS_I_SB(inode)->inline_inode)); \ |
| 2193 | } while (0) |
| 2194 | #define stat_inc_inline_dir(inode) \ |
| 2195 | do { \ |
| 2196 | if (f2fs_has_inline_dentry(inode)) \ |
| 2197 | (atomic_inc(&F2FS_I_SB(inode)->inline_dir)); \ |
| 2198 | } while (0) |
| 2199 | #define stat_dec_inline_dir(inode) \ |
| 2200 | do { \ |
| 2201 | if (f2fs_has_inline_dentry(inode)) \ |
| 2202 | (atomic_dec(&F2FS_I_SB(inode)->inline_dir)); \ |
| 2203 | } while (0) |
| 2204 | #define stat_inc_seg_type(sbi, curseg) \ |
| 2205 | ((sbi)->segment_count[(curseg)->alloc_type]++) |
| 2206 | #define stat_inc_block_count(sbi, curseg) \ |
| 2207 | ((sbi)->block_count[(curseg)->alloc_type]++) |
| 2208 | #define stat_inc_inplace_blocks(sbi) \ |
| 2209 | (atomic_inc(&(sbi)->inplace_count)) |
| 2210 | #define stat_inc_seg_count(sbi, type, gc_type) \ |
| 2211 | do { \ |
| 2212 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 2213 | (si)->tot_segs++; \ |
| 2214 | if (type == SUM_TYPE_DATA) { \ |
| 2215 | si->data_segs++; \ |
| 2216 | si->bg_data_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| 2217 | } else { \ |
| 2218 | si->node_segs++; \ |
| 2219 | si->bg_node_segs += (gc_type == BG_GC) ? 1 : 0; \ |
| 2220 | } \ |
| 2221 | } while (0) |
| 2222 | |
| 2223 | #define stat_inc_tot_blk_count(si, blks) \ |
| 2224 | (si->tot_blks += (blks)) |
| 2225 | |
| 2226 | #define stat_inc_data_blk_count(sbi, blks, gc_type) \ |
| 2227 | do { \ |
| 2228 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 2229 | stat_inc_tot_blk_count(si, blks); \ |
| 2230 | si->data_blks += (blks); \ |
| 2231 | si->bg_data_blks += (gc_type == BG_GC) ? (blks) : 0; \ |
| 2232 | } while (0) |
| 2233 | |
| 2234 | #define stat_inc_node_blk_count(sbi, blks, gc_type) \ |
| 2235 | do { \ |
| 2236 | struct f2fs_stat_info *si = F2FS_STAT(sbi); \ |
| 2237 | stat_inc_tot_blk_count(si, blks); \ |
| 2238 | si->node_blks += (blks); \ |
| 2239 | si->bg_node_blks += (gc_type == BG_GC) ? (blks) : 0; \ |
| 2240 | } while (0) |
| 2241 | |
| 2242 | int f2fs_build_stats(struct f2fs_sb_info *); |
| 2243 | void f2fs_destroy_stats(struct f2fs_sb_info *); |
| 2244 | int __init f2fs_create_root_stats(void); |
| 2245 | void f2fs_destroy_root_stats(void); |
| 2246 | #else |
| 2247 | #define stat_inc_cp_count(si) |
| 2248 | #define stat_inc_bg_cp_count(si) |
| 2249 | #define stat_inc_call_count(si) |
| 2250 | #define stat_inc_bggc_count(si) |
| 2251 | #define stat_inc_dirty_inode(sbi, type) |
| 2252 | #define stat_dec_dirty_inode(sbi, type) |
| 2253 | #define stat_inc_total_hit(sb) |
| 2254 | #define stat_inc_rbtree_node_hit(sb) |
| 2255 | #define stat_inc_largest_node_hit(sbi) |
| 2256 | #define stat_inc_cached_node_hit(sbi) |
| 2257 | #define stat_inc_inline_xattr(inode) |
| 2258 | #define stat_dec_inline_xattr(inode) |
| 2259 | #define stat_inc_inline_inode(inode) |
| 2260 | #define stat_dec_inline_inode(inode) |
| 2261 | #define stat_inc_inline_dir(inode) |
| 2262 | #define stat_dec_inline_dir(inode) |
| 2263 | #define stat_inc_seg_type(sbi, curseg) |
| 2264 | #define stat_inc_block_count(sbi, curseg) |
| 2265 | #define stat_inc_inplace_blocks(sbi) |
| 2266 | #define stat_inc_seg_count(sbi, type, gc_type) |
| 2267 | #define stat_inc_tot_blk_count(si, blks) |
| 2268 | #define stat_inc_data_blk_count(sbi, blks, gc_type) |
| 2269 | #define stat_inc_node_blk_count(sbi, blks, gc_type) |
| 2270 | |
| 2271 | static inline int f2fs_build_stats(struct f2fs_sb_info *sbi) { return 0; } |
| 2272 | static inline void f2fs_destroy_stats(struct f2fs_sb_info *sbi) { } |
| 2273 | static inline int __init f2fs_create_root_stats(void) { return 0; } |
| 2274 | static inline void f2fs_destroy_root_stats(void) { } |
| 2275 | #endif |
| 2276 | |
| 2277 | extern const struct file_operations f2fs_dir_operations; |
| 2278 | extern const struct file_operations f2fs_file_operations; |
| 2279 | extern const struct inode_operations f2fs_file_inode_operations; |
| 2280 | extern const struct address_space_operations f2fs_dblock_aops; |
| 2281 | extern const struct address_space_operations f2fs_node_aops; |
| 2282 | extern const struct address_space_operations f2fs_meta_aops; |
| 2283 | extern const struct inode_operations f2fs_dir_inode_operations; |
| 2284 | extern const struct inode_operations f2fs_symlink_inode_operations; |
| 2285 | extern const struct inode_operations f2fs_encrypted_symlink_inode_operations; |
| 2286 | extern const struct inode_operations f2fs_special_inode_operations; |
| 2287 | extern struct kmem_cache *inode_entry_slab; |
| 2288 | |
| 2289 | /* |
| 2290 | * inline.c |
| 2291 | */ |
| 2292 | bool f2fs_may_inline_data(struct inode *); |
| 2293 | bool f2fs_may_inline_dentry(struct inode *); |
| 2294 | void read_inline_data(struct page *, struct page *); |
| 2295 | bool truncate_inline_inode(struct page *, u64); |
| 2296 | int f2fs_read_inline_data(struct inode *, struct page *); |
| 2297 | int f2fs_convert_inline_page(struct dnode_of_data *, struct page *); |
| 2298 | int f2fs_convert_inline_inode(struct inode *); |
| 2299 | int f2fs_write_inline_data(struct inode *, struct page *); |
| 2300 | bool recover_inline_data(struct inode *, struct page *); |
| 2301 | struct f2fs_dir_entry *find_in_inline_dir(struct inode *, |
| 2302 | struct fscrypt_name *, struct page **); |
| 2303 | int make_empty_inline_dir(struct inode *inode, struct inode *, struct page *); |
| 2304 | int f2fs_add_inline_entry(struct inode *, const struct qstr *, struct inode *, |
| 2305 | nid_t, umode_t); |
| 2306 | void f2fs_delete_inline_entry(struct f2fs_dir_entry *, struct page *, |
| 2307 | struct inode *, struct inode *); |
| 2308 | bool f2fs_empty_inline_dir(struct inode *); |
| 2309 | int f2fs_read_inline_dir(struct file *, struct dir_context *, |
| 2310 | struct fscrypt_str *); |
| 2311 | int f2fs_inline_data_fiemap(struct inode *, |
| 2312 | struct fiemap_extent_info *, __u64, __u64); |
| 2313 | |
| 2314 | /* |
| 2315 | * shrinker.c |
| 2316 | */ |
| 2317 | unsigned long f2fs_shrink_count(struct shrinker *, struct shrink_control *); |
| 2318 | unsigned long f2fs_shrink_scan(struct shrinker *, struct shrink_control *); |
| 2319 | void f2fs_join_shrinker(struct f2fs_sb_info *); |
| 2320 | void f2fs_leave_shrinker(struct f2fs_sb_info *); |
| 2321 | |
| 2322 | /* |
| 2323 | * extent_cache.c |
| 2324 | */ |
| 2325 | unsigned int f2fs_shrink_extent_tree(struct f2fs_sb_info *, int); |
| 2326 | bool f2fs_init_extent_tree(struct inode *, struct f2fs_extent *); |
| 2327 | void f2fs_drop_extent_tree(struct inode *); |
| 2328 | unsigned int f2fs_destroy_extent_node(struct inode *); |
| 2329 | void f2fs_destroy_extent_tree(struct inode *); |
| 2330 | bool f2fs_lookup_extent_cache(struct inode *, pgoff_t, struct extent_info *); |
| 2331 | void f2fs_update_extent_cache(struct dnode_of_data *); |
| 2332 | void f2fs_update_extent_cache_range(struct dnode_of_data *dn, |
| 2333 | pgoff_t, block_t, unsigned int); |
| 2334 | void init_extent_cache_info(struct f2fs_sb_info *); |
| 2335 | int __init create_extent_cache(void); |
| 2336 | void destroy_extent_cache(void); |
| 2337 | |
| 2338 | /* |
| 2339 | * crypto support |
| 2340 | */ |
| 2341 | static inline bool f2fs_encrypted_inode(struct inode *inode) |
| 2342 | { |
| 2343 | return file_is_encrypt(inode); |
| 2344 | } |
| 2345 | |
| 2346 | static inline void f2fs_set_encrypted_inode(struct inode *inode) |
| 2347 | { |
| 2348 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 2349 | file_set_encrypt(inode); |
| 2350 | #endif |
| 2351 | } |
| 2352 | |
| 2353 | static inline bool f2fs_bio_encrypted(struct bio *bio) |
| 2354 | { |
| 2355 | return bio->bi_private != NULL; |
| 2356 | } |
| 2357 | |
| 2358 | static inline int f2fs_sb_has_crypto(struct super_block *sb) |
| 2359 | { |
| 2360 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_ENCRYPT); |
| 2361 | } |
| 2362 | |
| 2363 | static inline int f2fs_sb_mounted_hmsmr(struct super_block *sb) |
| 2364 | { |
| 2365 | return F2FS_HAS_FEATURE(sb, F2FS_FEATURE_HMSMR); |
| 2366 | } |
| 2367 | |
| 2368 | static inline void set_opt_mode(struct f2fs_sb_info *sbi, unsigned int mt) |
| 2369 | { |
| 2370 | clear_opt(sbi, ADAPTIVE); |
| 2371 | clear_opt(sbi, LFS); |
| 2372 | |
| 2373 | switch (mt) { |
| 2374 | case F2FS_MOUNT_ADAPTIVE: |
| 2375 | set_opt(sbi, ADAPTIVE); |
| 2376 | break; |
| 2377 | case F2FS_MOUNT_LFS: |
| 2378 | set_opt(sbi, LFS); |
| 2379 | break; |
| 2380 | } |
| 2381 | } |
| 2382 | |
| 2383 | static inline bool f2fs_may_encrypt(struct inode *inode) |
| 2384 | { |
| 2385 | #ifdef CONFIG_F2FS_FS_ENCRYPTION |
| 2386 | umode_t mode = inode->i_mode; |
| 2387 | |
| 2388 | return (S_ISREG(mode) || S_ISDIR(mode) || S_ISLNK(mode)); |
| 2389 | #else |
| 2390 | return 0; |
| 2391 | #endif |
| 2392 | } |
| 2393 | |
| 2394 | #ifndef CONFIG_F2FS_FS_ENCRYPTION |
| 2395 | #define fscrypt_set_d_op(i) |
| 2396 | #define fscrypt_get_ctx fscrypt_notsupp_get_ctx |
| 2397 | #define fscrypt_release_ctx fscrypt_notsupp_release_ctx |
| 2398 | #define fscrypt_encrypt_page fscrypt_notsupp_encrypt_page |
| 2399 | #define fscrypt_decrypt_page fscrypt_notsupp_decrypt_page |
| 2400 | #define fscrypt_decrypt_bio_pages fscrypt_notsupp_decrypt_bio_pages |
| 2401 | #define fscrypt_pullback_bio_page fscrypt_notsupp_pullback_bio_page |
| 2402 | #define fscrypt_restore_control_page fscrypt_notsupp_restore_control_page |
| 2403 | #define fscrypt_zeroout_range fscrypt_notsupp_zeroout_range |
| 2404 | #define fscrypt_process_policy fscrypt_notsupp_process_policy |
| 2405 | #define fscrypt_get_policy fscrypt_notsupp_get_policy |
| 2406 | #define fscrypt_has_permitted_context fscrypt_notsupp_has_permitted_context |
| 2407 | #define fscrypt_inherit_context fscrypt_notsupp_inherit_context |
| 2408 | #define fscrypt_get_encryption_info fscrypt_notsupp_get_encryption_info |
| 2409 | #define fscrypt_put_encryption_info fscrypt_notsupp_put_encryption_info |
| 2410 | #define fscrypt_setup_filename fscrypt_notsupp_setup_filename |
| 2411 | #define fscrypt_free_filename fscrypt_notsupp_free_filename |
| 2412 | #define fscrypt_fname_encrypted_size fscrypt_notsupp_fname_encrypted_size |
| 2413 | #define fscrypt_fname_alloc_buffer fscrypt_notsupp_fname_alloc_buffer |
| 2414 | #define fscrypt_fname_free_buffer fscrypt_notsupp_fname_free_buffer |
| 2415 | #define fscrypt_fname_disk_to_usr fscrypt_notsupp_fname_disk_to_usr |
| 2416 | #define fscrypt_fname_usr_to_disk fscrypt_notsupp_fname_usr_to_disk |
| 2417 | #endif |
| 2418 | #endif |