1// SPDX-License-Identifier: GPL-2.0
2/**
3 * include/linux/f2fs_fs.h
4 *
5 * Copyright (c) 2012 Samsung Electronics Co., Ltd.
6 * http://www.samsung.com/
7 */
8#ifndef _LINUX_F2FS_FS_H
9#define _LINUX_F2FS_FS_H
10
11#include <linux/pagemap.h>
12#include <linux/types.h>
13
14#define F2FS_SUPER_OFFSET 1024 /* byte-size offset */
15#define F2FS_MIN_LOG_SECTOR_SIZE 9 /* 9 bits for 512 bytes */
16#define F2FS_MAX_LOG_SECTOR_SIZE 12 /* 12 bits for 4096 bytes */
17#define F2FS_LOG_SECTORS_PER_BLOCK 3 /* log number for sector/blk */
18#define F2FS_BLKSIZE 4096 /* support only 4KB block */
19#define F2FS_BLKSIZE_BITS 12 /* bits for F2FS_BLKSIZE */
20#define F2FS_MAX_EXTENSION 64 /* # of extension entries */
21#define F2FS_EXTENSION_LEN 8 /* max size of extension */
22#define F2FS_BLK_ALIGN(x) (((x) + F2FS_BLKSIZE - 1) >> F2FS_BLKSIZE_BITS)
23
24#define NULL_ADDR ((block_t)0) /* used as block_t addresses */
25#define NEW_ADDR ((block_t)-1) /* used as block_t addresses */
26
27#define F2FS_BYTES_TO_BLK(bytes) ((bytes) >> F2FS_BLKSIZE_BITS)
28#define F2FS_BLK_TO_BYTES(blk) ((blk) << F2FS_BLKSIZE_BITS)
29
30/* 0, 1(node nid), 2(meta nid) are reserved node id */
31#define F2FS_RESERVED_NODE_NUM 3
32
33#define F2FS_ROOT_INO(sbi) ((sbi)->root_ino_num)
34#define F2FS_NODE_INO(sbi) ((sbi)->node_ino_num)
35#define F2FS_META_INO(sbi) ((sbi)->meta_ino_num)
36
37#define F2FS_MAX_QUOTAS 3
38
39#define F2FS_IO_SIZE(sbi) (1 << F2FS_OPTION(sbi).write_io_size_bits) /* Blocks */
40#define F2FS_IO_SIZE_KB(sbi) (1 << (F2FS_OPTION(sbi).write_io_size_bits + 2)) /* KB */
41#define F2FS_IO_SIZE_BYTES(sbi) (1 << (F2FS_OPTION(sbi).write_io_size_bits + 12)) /* B */
42#define F2FS_IO_SIZE_BITS(sbi) (F2FS_OPTION(sbi).write_io_size_bits) /* power of 2 */
43#define F2FS_IO_SIZE_MASK(sbi) (F2FS_IO_SIZE(sbi) - 1)
44
45/* This flag is used by node and meta inodes, and by recovery */
46#define GFP_F2FS_ZERO (GFP_NOFS | __GFP_ZERO)
47
48/*
49 * For further optimization on multi-head logs, on-disk layout supports maximum
50 * 16 logs by default. The number, 16, is expected to cover all the cases
51 * enoughly. The implementaion currently uses no more than 6 logs.
52 * Half the logs are used for nodes, and the other half are used for data.
53 */
54#define MAX_ACTIVE_LOGS 16
55#define MAX_ACTIVE_NODE_LOGS 8
56#define MAX_ACTIVE_DATA_LOGS 8
57
58#define VERSION_LEN 256
59#define MAX_VOLUME_NAME 512
60#define MAX_PATH_LEN 64
61#define MAX_DEVICES 8
62
63/*
64 * For superblock
65 */
66struct f2fs_device {
67 __u8 path[MAX_PATH_LEN];
68 __le32 total_segments;
69} __packed;
70
71struct f2fs_super_block {
72 __le32 magic; /* Magic Number */
73 __le16 major_ver; /* Major Version */
74 __le16 minor_ver; /* Minor Version */
75 __le32 log_sectorsize; /* log2 sector size in bytes */
76 __le32 log_sectors_per_block; /* log2 # of sectors per block */
77 __le32 log_blocksize; /* log2 block size in bytes */
78 __le32 log_blocks_per_seg; /* log2 # of blocks per segment */
79 __le32 segs_per_sec; /* # of segments per section */
80 __le32 secs_per_zone; /* # of sections per zone */
81 __le32 checksum_offset; /* checksum offset inside super block */
82 __le64 block_count; /* total # of user blocks */
83 __le32 section_count; /* total # of sections */
84 __le32 segment_count; /* total # of segments */
85 __le32 segment_count_ckpt; /* # of segments for checkpoint */
86 __le32 segment_count_sit; /* # of segments for SIT */
87 __le32 segment_count_nat; /* # of segments for NAT */
88 __le32 segment_count_ssa; /* # of segments for SSA */
89 __le32 segment_count_main; /* # of segments for main area */
90 __le32 segment0_blkaddr; /* start block address of segment 0 */
91 __le32 cp_blkaddr; /* start block address of checkpoint */
92 __le32 sit_blkaddr; /* start block address of SIT */
93 __le32 nat_blkaddr; /* start block address of NAT */
94 __le32 ssa_blkaddr; /* start block address of SSA */
95 __le32 main_blkaddr; /* start block address of main area */
96 __le32 root_ino; /* root inode number */
97 __le32 node_ino; /* node inode number */
98 __le32 meta_ino; /* meta inode number */
99 __u8 uuid[16]; /* 128-bit uuid for volume */
100 __le16 volume_name[MAX_VOLUME_NAME]; /* volume name */
101 __le32 extension_count; /* # of extensions below */
102 __u8 extension_list[F2FS_MAX_EXTENSION][F2FS_EXTENSION_LEN];/* extension array */
103 __le32 cp_payload;
104 __u8 version[VERSION_LEN]; /* the kernel version */
105 __u8 init_version[VERSION_LEN]; /* the initial kernel version */
106 __le32 feature; /* defined features */
107 __u8 encryption_level; /* versioning level for encryption */
108 __u8 encrypt_pw_salt[16]; /* Salt used for string2key algorithm */
109 struct f2fs_device devs[MAX_DEVICES]; /* device list */
110 __le32 qf_ino[F2FS_MAX_QUOTAS]; /* quota inode numbers */
111 __u8 hot_ext_count; /* # of hot file extension */
112 __u8 reserved[310]; /* valid reserved region */
113 __le32 crc; /* checksum of superblock */
114} __packed;
115
116/*
117 * For checkpoint
118 */
119#define CP_DISABLED_QUICK_FLAG 0x00002000
120#define CP_DISABLED_FLAG 0x00001000
121#define CP_QUOTA_NEED_FSCK_FLAG 0x00000800
122#define CP_LARGE_NAT_BITMAP_FLAG 0x00000400
123#define CP_NOCRC_RECOVERY_FLAG 0x00000200
124#define CP_TRIMMED_FLAG 0x00000100
125#define CP_NAT_BITS_FLAG 0x00000080
126#define CP_CRC_RECOVERY_FLAG 0x00000040
127#define CP_FASTBOOT_FLAG 0x00000020
128#define CP_FSCK_FLAG 0x00000010
129#define CP_ERROR_FLAG 0x00000008
130#define CP_COMPACT_SUM_FLAG 0x00000004
131#define CP_ORPHAN_PRESENT_FLAG 0x00000002
132#define CP_UMOUNT_FLAG 0x00000001
133
134#define F2FS_CP_PACKS 2 /* # of checkpoint packs */
135
136struct f2fs_checkpoint {
137 __le64 checkpoint_ver; /* checkpoint block version number */
138 __le64 user_block_count; /* # of user blocks */
139 __le64 valid_block_count; /* # of valid blocks in main area */
140 __le32 rsvd_segment_count; /* # of reserved segments for gc */
141 __le32 overprov_segment_count; /* # of overprovision segments */
142 __le32 free_segment_count; /* # of free segments in main area */
143
144 /* information of current node segments */
145 __le32 cur_node_segno[MAX_ACTIVE_NODE_LOGS];
146 __le16 cur_node_blkoff[MAX_ACTIVE_NODE_LOGS];
147 /* information of current data segments */
148 __le32 cur_data_segno[MAX_ACTIVE_DATA_LOGS];
149 __le16 cur_data_blkoff[MAX_ACTIVE_DATA_LOGS];
150 __le32 ckpt_flags; /* Flags : umount and journal_present */
151 __le32 cp_pack_total_block_count; /* total # of one cp pack */
152 __le32 cp_pack_start_sum; /* start block number of data summary */
153 __le32 valid_node_count; /* Total number of valid nodes */
154 __le32 valid_inode_count; /* Total number of valid inodes */
155 __le32 next_free_nid; /* Next free node number */
156 __le32 sit_ver_bitmap_bytesize; /* Default value 64 */
157 __le32 nat_ver_bitmap_bytesize; /* Default value 256 */
158 __le32 checksum_offset; /* checksum offset inside cp block */
159 __le64 elapsed_time; /* mounted time */
160 /* allocation type of current segment */
161 unsigned char alloc_type[MAX_ACTIVE_LOGS];
162
163 /* SIT and NAT version bitmap */
164 unsigned char sit_nat_version_bitmap[1];
165} __packed;
166
167/*
168 * For orphan inode management
169 */
170#define F2FS_ORPHANS_PER_BLOCK 1020
171
172#define GET_ORPHAN_BLOCKS(n) (((n) + F2FS_ORPHANS_PER_BLOCK - 1) / \
173 F2FS_ORPHANS_PER_BLOCK)
174
175struct f2fs_orphan_block {
176 __le32 ino[F2FS_ORPHANS_PER_BLOCK]; /* inode numbers */
177 __le32 reserved; /* reserved */
178 __le16 blk_addr; /* block index in current CP */
179 __le16 blk_count; /* Number of orphan inode blocks in CP */
180 __le32 entry_count; /* Total number of orphan nodes in current CP */
181 __le32 check_sum; /* CRC32 for orphan inode block */
182} __packed;
183
184/*
185 * For NODE structure
186 */
187struct f2fs_extent {
188 __le32 fofs; /* start file offset of the extent */
189 __le32 blk; /* start block address of the extent */
190 __le32 len; /* length of the extent */
191} __packed;
192
193#define F2FS_NAME_LEN 255
194/* 200 bytes for inline xattrs by default */
195#define DEFAULT_INLINE_XATTR_ADDRS 50
196#define DEF_ADDRS_PER_INODE 923 /* Address Pointers in an Inode */
197#define CUR_ADDRS_PER_INODE(inode) (DEF_ADDRS_PER_INODE - \
198 get_extra_isize(inode))
199#define DEF_NIDS_PER_INODE 5 /* Node IDs in an Inode */
200#define ADDRS_PER_INODE(inode) addrs_per_inode(inode)
201#define ADDRS_PER_BLOCK 1018 /* Address Pointers in a Direct Block */
202#define NIDS_PER_BLOCK 1018 /* Node IDs in an Indirect Block */
203
204#define ADDRS_PER_PAGE(page, inode) \
205 (IS_INODE(page) ? ADDRS_PER_INODE(inode) : ADDRS_PER_BLOCK)
206
207#define NODE_DIR1_BLOCK (DEF_ADDRS_PER_INODE + 1)
208#define NODE_DIR2_BLOCK (DEF_ADDRS_PER_INODE + 2)
209#define NODE_IND1_BLOCK (DEF_ADDRS_PER_INODE + 3)
210#define NODE_IND2_BLOCK (DEF_ADDRS_PER_INODE + 4)
211#define NODE_DIND_BLOCK (DEF_ADDRS_PER_INODE + 5)
212
213#define F2FS_INLINE_XATTR 0x01 /* file inline xattr flag */
214#define F2FS_INLINE_DATA 0x02 /* file inline data flag */
215#define F2FS_INLINE_DENTRY 0x04 /* file inline dentry flag */
216#define F2FS_DATA_EXIST 0x08 /* file inline data exist flag */
217#define F2FS_INLINE_DOTS 0x10 /* file having implicit dot dentries */
218#define F2FS_EXTRA_ATTR 0x20 /* file having extra attribute */
219#define F2FS_PIN_FILE 0x40 /* file should not be gced */
220
221struct f2fs_inode {
222 __le16 i_mode; /* file mode */
223 __u8 i_advise; /* file hints */
224 __u8 i_inline; /* file inline flags */
225 __le32 i_uid; /* user ID */
226 __le32 i_gid; /* group ID */
227 __le32 i_links; /* links count */
228 __le64 i_size; /* file size in bytes */
229 __le64 i_blocks; /* file size in blocks */
230 __le64 i_atime; /* access time */
231 __le64 i_ctime; /* change time */
232 __le64 i_mtime; /* modification time */
233 __le32 i_atime_nsec; /* access time in nano scale */
234 __le32 i_ctime_nsec; /* change time in nano scale */
235 __le32 i_mtime_nsec; /* modification time in nano scale */
236 __le32 i_generation; /* file version (for NFS) */
237 union {
238 __le32 i_current_depth; /* only for directory depth */
239 __le16 i_gc_failures; /*
240 * # of gc failures on pinned file.
241 * only for regular files.
242 */
243 };
244 __le32 i_xattr_nid; /* nid to save xattr */
245 __le32 i_flags; /* file attributes */
246 __le32 i_pino; /* parent inode number */
247 __le32 i_namelen; /* file name length */
248 __u8 i_name[F2FS_NAME_LEN]; /* file name for SPOR */
249 __u8 i_dir_level; /* dentry_level for large dir */
250
251 struct f2fs_extent i_ext; /* caching a largest extent */
252
253 union {
254 struct {
255 __le16 i_extra_isize; /* extra inode attribute size */
256 __le16 i_inline_xattr_size; /* inline xattr size, unit: 4 bytes */
257 __le32 i_projid; /* project id */
258 __le32 i_inode_checksum;/* inode meta checksum */
259 __le64 i_crtime; /* creation time */
260 __le32 i_crtime_nsec; /* creation time in nano scale */
261 __le32 i_extra_end[0]; /* for attribute size calculation */
262 } __packed;
263 __le32 i_addr[DEF_ADDRS_PER_INODE]; /* Pointers to data blocks */
264 };
265 __le32 i_nid[DEF_NIDS_PER_INODE]; /* direct(2), indirect(2),
266 double_indirect(1) node id */
267} __packed;
268
269struct direct_node {
270 __le32 addr[ADDRS_PER_BLOCK]; /* array of data block address */
271} __packed;
272
273struct indirect_node {
274 __le32 nid[NIDS_PER_BLOCK]; /* array of data block address */
275} __packed;
276
277enum {
278 COLD_BIT_SHIFT = 0,
279 FSYNC_BIT_SHIFT,
280 DENT_BIT_SHIFT,
281 OFFSET_BIT_SHIFT
282};
283
284#define OFFSET_BIT_MASK (0x07) /* (0x01 << OFFSET_BIT_SHIFT) - 1 */
285
286struct node_footer {
287 __le32 nid; /* node id */
288 __le32 ino; /* inode number */
289 __le32 flag; /* include cold/fsync/dentry marks and offset */
290 __le64 cp_ver; /* checkpoint version */
291 __le32 next_blkaddr; /* next node page block address */
292} __packed;
293
294struct f2fs_node {
295 /* can be one of three types: inode, direct, and indirect types */
296 union {
297 struct f2fs_inode i;
298 struct direct_node dn;
299 struct indirect_node in;
300 };
301 struct node_footer footer;
302} __packed;
303
304/*
305 * For NAT entries
306 */
307#define NAT_ENTRY_PER_BLOCK (PAGE_SIZE / sizeof(struct f2fs_nat_entry))
308
309struct f2fs_nat_entry {
310 __u8 version; /* latest version of cached nat entry */
311 __le32 ino; /* inode number */
312 __le32 block_addr; /* block address */
313} __packed;
314
315struct f2fs_nat_block {
316 struct f2fs_nat_entry entries[NAT_ENTRY_PER_BLOCK];
317} __packed;
318
319/*
320 * For SIT entries
321 *
322 * Each segment is 2MB in size by default so that a bitmap for validity of
323 * there-in blocks should occupy 64 bytes, 512 bits.
324 * Not allow to change this.
325 */
326#define SIT_VBLOCK_MAP_SIZE 64
327#define SIT_ENTRY_PER_BLOCK (PAGE_SIZE / sizeof(struct f2fs_sit_entry))
328
329/*
330 * F2FS uses 4 bytes to represent block address. As a result, supported size of
331 * disk is 16 TB and it equals to 16 * 1024 * 1024 / 2 segments.
332 */
333#define F2FS_MAX_SEGMENT ((16 * 1024 * 1024) / 2)
334
335/*
336 * Note that f2fs_sit_entry->vblocks has the following bit-field information.
337 * [15:10] : allocation type such as CURSEG_XXXX_TYPE
338 * [9:0] : valid block count
339 */
340#define SIT_VBLOCKS_SHIFT 10
341#define SIT_VBLOCKS_MASK ((1 << SIT_VBLOCKS_SHIFT) - 1)
342#define GET_SIT_VBLOCKS(raw_sit) \
343 (le16_to_cpu((raw_sit)->vblocks) & SIT_VBLOCKS_MASK)
344#define GET_SIT_TYPE(raw_sit) \
345 ((le16_to_cpu((raw_sit)->vblocks) & ~SIT_VBLOCKS_MASK) \
346 >> SIT_VBLOCKS_SHIFT)
347
348struct f2fs_sit_entry {
349 __le16 vblocks; /* reference above */
350 __u8 valid_map[SIT_VBLOCK_MAP_SIZE]; /* bitmap for valid blocks */
351 __le64 mtime; /* segment age for cleaning */
352} __packed;
353
354struct f2fs_sit_block {
355 struct f2fs_sit_entry entries[SIT_ENTRY_PER_BLOCK];
356} __packed;
357
358/*
359 * For segment summary
360 *
361 * One summary block contains exactly 512 summary entries, which represents
362 * exactly 2MB segment by default. Not allow to change the basic units.
363 *
364 * NOTE: For initializing fields, you must use set_summary
365 *
366 * - If data page, nid represents dnode's nid
367 * - If node page, nid represents the node page's nid.
368 *
369 * The ofs_in_node is used by only data page. It represents offset
370 * from node's page's beginning to get a data block address.
371 * ex) data_blkaddr = (block_t)(nodepage_start_address + ofs_in_node)
372 */
373#define ENTRIES_IN_SUM 512
374#define SUMMARY_SIZE (7) /* sizeof(struct summary) */
375#define SUM_FOOTER_SIZE (5) /* sizeof(struct summary_footer) */
376#define SUM_ENTRY_SIZE (SUMMARY_SIZE * ENTRIES_IN_SUM)
377
378/* a summary entry for a 4KB-sized block in a segment */
379struct f2fs_summary {
380 __le32 nid; /* parent node id */
381 union {
382 __u8 reserved[3];
383 struct {
384 __u8 version; /* node version number */
385 __le16 ofs_in_node; /* block index in parent node */
386 } __packed;
387 };
388} __packed;
389
390/* summary block type, node or data, is stored to the summary_footer */
391#define SUM_TYPE_NODE (1)
392#define SUM_TYPE_DATA (0)
393
394struct summary_footer {
395 unsigned char entry_type; /* SUM_TYPE_XXX */
396 __le32 check_sum; /* summary checksum */
397} __packed;
398
399#define SUM_JOURNAL_SIZE (F2FS_BLKSIZE - SUM_FOOTER_SIZE -\
400 SUM_ENTRY_SIZE)
401#define NAT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\
402 sizeof(struct nat_journal_entry))
403#define NAT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\
404 sizeof(struct nat_journal_entry))
405#define SIT_JOURNAL_ENTRIES ((SUM_JOURNAL_SIZE - 2) /\
406 sizeof(struct sit_journal_entry))
407#define SIT_JOURNAL_RESERVED ((SUM_JOURNAL_SIZE - 2) %\
408 sizeof(struct sit_journal_entry))
409
410/* Reserved area should make size of f2fs_extra_info equals to
411 * that of nat_journal and sit_journal.
412 */
413#define EXTRA_INFO_RESERVED (SUM_JOURNAL_SIZE - 2 - 8)
414
415/*
416 * frequently updated NAT/SIT entries can be stored in the spare area in
417 * summary blocks
418 */
419enum {
420 NAT_JOURNAL = 0,
421 SIT_JOURNAL
422};
423
424struct nat_journal_entry {
425 __le32 nid;
426 struct f2fs_nat_entry ne;
427} __packed;
428
429struct nat_journal {
430 struct nat_journal_entry entries[NAT_JOURNAL_ENTRIES];
431 __u8 reserved[NAT_JOURNAL_RESERVED];
432} __packed;
433
434struct sit_journal_entry {
435 __le32 segno;
436 struct f2fs_sit_entry se;
437} __packed;
438
439struct sit_journal {
440 struct sit_journal_entry entries[SIT_JOURNAL_ENTRIES];
441 __u8 reserved[SIT_JOURNAL_RESERVED];
442} __packed;
443
444struct f2fs_extra_info {
445 __le64 kbytes_written;
446 __u8 reserved[EXTRA_INFO_RESERVED];
447} __packed;
448
449struct f2fs_journal {
450 union {
451 __le16 n_nats;
452 __le16 n_sits;
453 };
454 /* spare area is used by NAT or SIT journals or extra info */
455 union {
456 struct nat_journal nat_j;
457 struct sit_journal sit_j;
458 struct f2fs_extra_info info;
459 };
460} __packed;
461
462/* 4KB-sized summary block structure */
463struct f2fs_summary_block {
464 struct f2fs_summary entries[ENTRIES_IN_SUM];
465 struct f2fs_journal journal;
466 struct summary_footer footer;
467} __packed;
468
469/*
470 * For directory operations
471 */
472#define F2FS_DOT_HASH 0
473#define F2FS_DDOT_HASH F2FS_DOT_HASH
474#define F2FS_MAX_HASH (~((0x3ULL) << 62))
475#define F2FS_HASH_COL_BIT ((0x1ULL) << 63)
476
477typedef __le32 f2fs_hash_t;
478
479/* One directory entry slot covers 8bytes-long file name */
480#define F2FS_SLOT_LEN 8
481#define F2FS_SLOT_LEN_BITS 3
482
483#define GET_DENTRY_SLOTS(x) (((x) + F2FS_SLOT_LEN - 1) >> F2FS_SLOT_LEN_BITS)
484
485/* MAX level for dir lookup */
486#define MAX_DIR_HASH_DEPTH 63
487
488/* MAX buckets in one level of dir */
489#define MAX_DIR_BUCKETS (1 << ((MAX_DIR_HASH_DEPTH / 2) - 1))
490
491/*
492 * space utilization of regular dentry and inline dentry (w/o extra reservation)
493 * regular dentry inline dentry (def) inline dentry (min)
494 * bitmap 1 * 27 = 27 1 * 23 = 23 1 * 1 = 1
495 * reserved 1 * 3 = 3 1 * 7 = 7 1 * 1 = 1
496 * dentry 11 * 214 = 2354 11 * 182 = 2002 11 * 2 = 22
497 * filename 8 * 214 = 1712 8 * 182 = 1456 8 * 2 = 16
498 * total 4096 3488 40
499 *
500 * Note: there are more reserved space in inline dentry than in regular
501 * dentry, when converting inline dentry we should handle this carefully.
502 */
503#define NR_DENTRY_IN_BLOCK 214 /* the number of dentry in a block */
504#define SIZE_OF_DIR_ENTRY 11 /* by byte */
505#define SIZE_OF_DENTRY_BITMAP ((NR_DENTRY_IN_BLOCK + BITS_PER_BYTE - 1) / \
506 BITS_PER_BYTE)
507#define SIZE_OF_RESERVED (PAGE_SIZE - ((SIZE_OF_DIR_ENTRY + \
508 F2FS_SLOT_LEN) * \
509 NR_DENTRY_IN_BLOCK + SIZE_OF_DENTRY_BITMAP))
510#define MIN_INLINE_DENTRY_SIZE 40 /* just include '.' and '..' entries */
511
512/* One directory entry slot representing F2FS_SLOT_LEN-sized file name */
513struct f2fs_dir_entry {
514 __le32 hash_code; /* hash code of file name */
515 __le32 ino; /* inode number */
516 __le16 name_len; /* length of file name */
517 __u8 file_type; /* file type */
518} __packed;
519
520/* 4KB-sized directory entry block */
521struct f2fs_dentry_block {
522 /* validity bitmap for directory entries in each block */
523 __u8 dentry_bitmap[SIZE_OF_DENTRY_BITMAP];
524 __u8 reserved[SIZE_OF_RESERVED];
525 struct f2fs_dir_entry dentry[NR_DENTRY_IN_BLOCK];
526 __u8 filename[NR_DENTRY_IN_BLOCK][F2FS_SLOT_LEN];
527} __packed;
528
529/* file types used in inode_info->flags */
530enum {
531 F2FS_FT_UNKNOWN,
532 F2FS_FT_REG_FILE,
533 F2FS_FT_DIR,
534 F2FS_FT_CHRDEV,
535 F2FS_FT_BLKDEV,
536 F2FS_FT_FIFO,
537 F2FS_FT_SOCK,
538 F2FS_FT_SYMLINK,
539 F2FS_FT_MAX
540};
541
542#define S_SHIFT 12
543
544#define F2FS_DEF_PROJID 0 /* default project ID */
545
546#endif /* _LINUX_F2FS_FS_H */
547