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651 lines
18 KiB
651 lines
18 KiB
/* SPDX-License-Identifier: LGPL-2.1+ WITH Linux-syscall-note */ |
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/* |
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* nilfs2_ondisk.h - NILFS2 on-disk structures |
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* |
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* Copyright (C) 2005-2008 Nippon Telegraph and Telephone Corporation. |
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* |
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* This program is free software; you can redistribute it and/or modify |
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* it under the terms of the GNU Lesser General Public License as published |
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* by the Free Software Foundation; either version 2.1 of the License, or |
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* (at your option) any later version. |
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*/ |
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/* |
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* linux/include/linux/ext2_fs.h |
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* |
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* Copyright (C) 1992, 1993, 1994, 1995 |
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* Remy Card ([email protected]) |
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* Laboratoire MASI - Institut Blaise Pascal |
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* Universite Pierre et Marie Curie (Paris VI) |
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* |
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* from |
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* |
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* linux/include/linux/minix_fs.h |
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* |
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* Copyright (C) 1991, 1992 Linus Torvalds |
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*/ |
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#ifndef _LINUX_NILFS2_ONDISK_H |
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#define _LINUX_NILFS2_ONDISK_H |
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#include <linux/types.h> |
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#include <linux/magic.h> |
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#include <asm/byteorder.h> |
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#define NILFS_INODE_BMAP_SIZE 7 |
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/** |
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* struct nilfs_inode - structure of an inode on disk |
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* @i_blocks: blocks count |
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* @i_size: size in bytes |
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* @i_ctime: creation time (seconds) |
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* @i_mtime: modification time (seconds) |
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* @i_ctime_nsec: creation time (nano seconds) |
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* @i_mtime_nsec: modification time (nano seconds) |
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* @i_uid: user id |
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* @i_gid: group id |
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* @i_mode: file mode |
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* @i_links_count: links count |
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* @i_flags: file flags |
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* @i_bmap: block mapping |
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* @i_xattr: extended attributes |
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* @i_generation: file generation (for NFS) |
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* @i_pad: padding |
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*/ |
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struct nilfs_inode { |
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__le64 i_blocks; |
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__le64 i_size; |
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__le64 i_ctime; |
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__le64 i_mtime; |
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__le32 i_ctime_nsec; |
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__le32 i_mtime_nsec; |
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__le32 i_uid; |
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__le32 i_gid; |
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__le16 i_mode; |
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__le16 i_links_count; |
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__le32 i_flags; |
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__le64 i_bmap[NILFS_INODE_BMAP_SIZE]; |
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#define i_device_code i_bmap[0] |
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__le64 i_xattr; |
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__le32 i_generation; |
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__le32 i_pad; |
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}; |
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#define NILFS_MIN_INODE_SIZE 128 |
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/** |
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* struct nilfs_super_root - structure of super root |
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* @sr_sum: check sum |
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* @sr_bytes: byte count of the structure |
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* @sr_flags: flags (reserved) |
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* @sr_nongc_ctime: write time of the last segment not for cleaner operation |
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* @sr_dat: DAT file inode |
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* @sr_cpfile: checkpoint file inode |
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* @sr_sufile: segment usage file inode |
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*/ |
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struct nilfs_super_root { |
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__le32 sr_sum; |
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__le16 sr_bytes; |
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__le16 sr_flags; |
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__le64 sr_nongc_ctime; |
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struct nilfs_inode sr_dat; |
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struct nilfs_inode sr_cpfile; |
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struct nilfs_inode sr_sufile; |
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}; |
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#define NILFS_SR_MDT_OFFSET(inode_size, i) \ |
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((unsigned long)&((struct nilfs_super_root *)0)->sr_dat + \ |
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(inode_size) * (i)) |
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#define NILFS_SR_DAT_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 0) |
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#define NILFS_SR_CPFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 1) |
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#define NILFS_SR_SUFILE_OFFSET(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 2) |
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#define NILFS_SR_BYTES(inode_size) NILFS_SR_MDT_OFFSET(inode_size, 3) |
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/* |
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* Maximal mount counts |
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*/ |
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#define NILFS_DFL_MAX_MNT_COUNT 50 /* 50 mounts */ |
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/* |
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* File system states (sbp->s_state, nilfs->ns_mount_state) |
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*/ |
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#define NILFS_VALID_FS 0x0001 /* Unmounted cleanly */ |
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#define NILFS_ERROR_FS 0x0002 /* Errors detected */ |
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#define NILFS_RESIZE_FS 0x0004 /* Resize required */ |
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/* |
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* Mount flags (sbi->s_mount_opt) |
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*/ |
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#define NILFS_MOUNT_ERROR_MODE 0x0070 /* Error mode mask */ |
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#define NILFS_MOUNT_ERRORS_CONT 0x0010 /* Continue on errors */ |
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#define NILFS_MOUNT_ERRORS_RO 0x0020 /* Remount fs ro on errors */ |
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#define NILFS_MOUNT_ERRORS_PANIC 0x0040 /* Panic on errors */ |
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#define NILFS_MOUNT_BARRIER 0x1000 /* Use block barriers */ |
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#define NILFS_MOUNT_STRICT_ORDER 0x2000 /* |
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* Apply strict in-order |
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* semantics also for data |
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*/ |
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#define NILFS_MOUNT_NORECOVERY 0x4000 /* |
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* Disable write access during |
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* mount-time recovery |
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*/ |
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#define NILFS_MOUNT_DISCARD 0x8000 /* Issue DISCARD requests */ |
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/** |
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* struct nilfs_super_block - structure of super block on disk |
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*/ |
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struct nilfs_super_block { |
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/*00*/ __le32 s_rev_level; /* Revision level */ |
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__le16 s_minor_rev_level; /* minor revision level */ |
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__le16 s_magic; /* Magic signature */ |
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__le16 s_bytes; /* |
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* Bytes count of CRC calculation |
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* for this structure. s_reserved |
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* is excluded. |
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*/ |
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__le16 s_flags; /* flags */ |
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__le32 s_crc_seed; /* Seed value of CRC calculation */ |
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/*10*/ __le32 s_sum; /* Check sum of super block */ |
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__le32 s_log_block_size; /* |
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* Block size represented as follows |
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* blocksize = |
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* 1 << (s_log_block_size + 10) |
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*/ |
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__le64 s_nsegments; /* Number of segments in filesystem */ |
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/*20*/ __le64 s_dev_size; /* block device size in bytes */ |
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__le64 s_first_data_block; /* 1st seg disk block number */ |
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/*30*/ __le32 s_blocks_per_segment; /* number of blocks per full segment */ |
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__le32 s_r_segments_percentage; /* Reserved segments percentage */ |
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__le64 s_last_cno; /* Last checkpoint number */ |
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/*40*/ __le64 s_last_pseg; /* disk block addr pseg written last */ |
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__le64 s_last_seq; /* seq. number of seg written last */ |
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/*50*/ __le64 s_free_blocks_count; /* Free blocks count */ |
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__le64 s_ctime; /* |
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* Creation time (execution time of |
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* newfs) |
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*/ |
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/*60*/ __le64 s_mtime; /* Mount time */ |
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__le64 s_wtime; /* Write time */ |
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/*70*/ __le16 s_mnt_count; /* Mount count */ |
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__le16 s_max_mnt_count; /* Maximal mount count */ |
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__le16 s_state; /* File system state */ |
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__le16 s_errors; /* Behaviour when detecting errors */ |
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__le64 s_lastcheck; /* time of last check */ |
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/*80*/ __le32 s_checkinterval; /* max. time between checks */ |
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__le32 s_creator_os; /* OS */ |
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__le16 s_def_resuid; /* Default uid for reserved blocks */ |
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__le16 s_def_resgid; /* Default gid for reserved blocks */ |
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__le32 s_first_ino; /* First non-reserved inode */ |
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/*90*/ __le16 s_inode_size; /* Size of an inode */ |
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__le16 s_dat_entry_size; /* Size of a dat entry */ |
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__le16 s_checkpoint_size; /* Size of a checkpoint */ |
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__le16 s_segment_usage_size; /* Size of a segment usage */ |
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/*98*/ __u8 s_uuid[16]; /* 128-bit uuid for volume */ |
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/*A8*/ char s_volume_name[80]; /* volume name */ |
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/*F8*/ __le32 s_c_interval; /* Commit interval of segment */ |
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__le32 s_c_block_max; /* |
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* Threshold of data amount for |
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* the segment construction |
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*/ |
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/*100*/ __le64 s_feature_compat; /* Compatible feature set */ |
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__le64 s_feature_compat_ro; /* Read-only compatible feature set */ |
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__le64 s_feature_incompat; /* Incompatible feature set */ |
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__u32 s_reserved[186]; /* padding to the end of the block */ |
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}; |
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/* |
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* Codes for operating systems |
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*/ |
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#define NILFS_OS_LINUX 0 |
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/* Codes from 1 to 4 are reserved to keep compatibility with ext2 creator-OS */ |
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/* |
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* Revision levels |
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*/ |
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#define NILFS_CURRENT_REV 2 /* current major revision */ |
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#define NILFS_MINOR_REV 0 /* minor revision */ |
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#define NILFS_MIN_SUPP_REV 2 /* minimum supported revision */ |
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/* |
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* Feature set definitions |
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* |
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* If there is a bit set in the incompatible feature set that the kernel |
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* doesn't know about, it should refuse to mount the filesystem. |
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*/ |
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#define NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT 0x00000001ULL |
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#define NILFS_FEATURE_COMPAT_SUPP 0ULL |
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#define NILFS_FEATURE_COMPAT_RO_SUPP NILFS_FEATURE_COMPAT_RO_BLOCK_COUNT |
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#define NILFS_FEATURE_INCOMPAT_SUPP 0ULL |
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/* |
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* Bytes count of super_block for CRC-calculation |
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*/ |
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#define NILFS_SB_BYTES \ |
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((long)&((struct nilfs_super_block *)0)->s_reserved) |
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/* |
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* Special inode number |
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*/ |
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#define NILFS_ROOT_INO 2 /* Root file inode */ |
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#define NILFS_DAT_INO 3 /* DAT file */ |
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#define NILFS_CPFILE_INO 4 /* checkpoint file */ |
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#define NILFS_SUFILE_INO 5 /* segment usage file */ |
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#define NILFS_IFILE_INO 6 /* ifile */ |
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#define NILFS_ATIME_INO 7 /* Atime file (reserved) */ |
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#define NILFS_XATTR_INO 8 /* Xattribute file (reserved) */ |
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#define NILFS_SKETCH_INO 10 /* Sketch file */ |
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#define NILFS_USER_INO 11 /* Fisrt user's file inode number */ |
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#define NILFS_SB_OFFSET_BYTES 1024 /* byte offset of nilfs superblock */ |
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#define NILFS_SEG_MIN_BLOCKS 16 /* |
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* Minimum number of blocks in |
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* a full segment |
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*/ |
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#define NILFS_PSEG_MIN_BLOCKS 2 /* |
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* Minimum number of blocks in |
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* a partial segment |
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*/ |
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#define NILFS_MIN_NRSVSEGS 8 /* |
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* Minimum number of reserved |
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* segments |
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*/ |
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/* |
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* We call DAT, cpfile, and sufile root metadata files. Inodes of |
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* these files are written in super root block instead of ifile, and |
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* garbage collector doesn't keep any past versions of these files. |
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*/ |
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#define NILFS_ROOT_METADATA_FILE(ino) \ |
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((ino) >= NILFS_DAT_INO && (ino) <= NILFS_SUFILE_INO) |
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/* |
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* bytes offset of secondary super block |
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*/ |
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#define NILFS_SB2_OFFSET_BYTES(devsize) ((((devsize) >> 12) - 1) << 12) |
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/* |
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* Maximal count of links to a file |
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*/ |
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#define NILFS_LINK_MAX 32000 |
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/* |
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* Structure of a directory entry |
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* (Same as ext2) |
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*/ |
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#define NILFS_NAME_LEN 255 |
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/* |
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* Block size limitations |
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*/ |
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#define NILFS_MIN_BLOCK_SIZE 1024 |
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#define NILFS_MAX_BLOCK_SIZE 65536 |
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/* |
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* The new version of the directory entry. Since V0 structures are |
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* stored in intel byte order, and the name_len field could never be |
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* bigger than 255 chars, it's safe to reclaim the extra byte for the |
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* file_type field. |
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*/ |
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struct nilfs_dir_entry { |
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__le64 inode; /* Inode number */ |
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__le16 rec_len; /* Directory entry length */ |
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__u8 name_len; /* Name length */ |
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__u8 file_type; /* Dir entry type (file, dir, etc) */ |
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char name[NILFS_NAME_LEN]; /* File name */ |
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char pad; |
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}; |
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/* |
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* NILFS directory file types. Only the low 3 bits are used. The |
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* other bits are reserved for now. |
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*/ |
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enum { |
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NILFS_FT_UNKNOWN, |
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NILFS_FT_REG_FILE, |
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NILFS_FT_DIR, |
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NILFS_FT_CHRDEV, |
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NILFS_FT_BLKDEV, |
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NILFS_FT_FIFO, |
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NILFS_FT_SOCK, |
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NILFS_FT_SYMLINK, |
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NILFS_FT_MAX |
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}; |
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/* |
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* NILFS_DIR_PAD defines the directory entries boundaries |
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* |
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* NOTE: It must be a multiple of 8 |
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*/ |
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#define NILFS_DIR_PAD 8 |
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#define NILFS_DIR_ROUND (NILFS_DIR_PAD - 1) |
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#define NILFS_DIR_REC_LEN(name_len) (((name_len) + 12 + NILFS_DIR_ROUND) & \ |
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~NILFS_DIR_ROUND) |
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#define NILFS_MAX_REC_LEN ((1 << 16) - 1) |
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/** |
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* struct nilfs_finfo - file information |
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* @fi_ino: inode number |
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* @fi_cno: checkpoint number |
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* @fi_nblocks: number of blocks (including intermediate blocks) |
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* @fi_ndatablk: number of file data blocks |
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*/ |
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struct nilfs_finfo { |
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__le64 fi_ino; |
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__le64 fi_cno; |
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__le32 fi_nblocks; |
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__le32 fi_ndatablk; |
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}; |
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/** |
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* struct nilfs_binfo_v - information on a data block (except DAT) |
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* @bi_vblocknr: virtual block number |
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* @bi_blkoff: block offset |
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*/ |
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struct nilfs_binfo_v { |
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__le64 bi_vblocknr; |
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__le64 bi_blkoff; |
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}; |
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/** |
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* struct nilfs_binfo_dat - information on a DAT node block |
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* @bi_blkoff: block offset |
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* @bi_level: level |
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* @bi_pad: padding |
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*/ |
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struct nilfs_binfo_dat { |
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__le64 bi_blkoff; |
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__u8 bi_level; |
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__u8 bi_pad[7]; |
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}; |
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/** |
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* union nilfs_binfo: block information |
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* @bi_v: nilfs_binfo_v structure |
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* @bi_dat: nilfs_binfo_dat structure |
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*/ |
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union nilfs_binfo { |
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struct nilfs_binfo_v bi_v; |
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struct nilfs_binfo_dat bi_dat; |
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}; |
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/** |
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* struct nilfs_segment_summary - segment summary header |
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* @ss_datasum: checksum of data |
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* @ss_sumsum: checksum of segment summary |
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* @ss_magic: magic number |
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* @ss_bytes: size of this structure in bytes |
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* @ss_flags: flags |
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* @ss_seq: sequence number |
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* @ss_create: creation timestamp |
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* @ss_next: next segment |
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* @ss_nblocks: number of blocks |
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* @ss_nfinfo: number of finfo structures |
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* @ss_sumbytes: total size of segment summary in bytes |
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* @ss_pad: padding |
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* @ss_cno: checkpoint number |
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*/ |
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struct nilfs_segment_summary { |
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__le32 ss_datasum; |
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__le32 ss_sumsum; |
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__le32 ss_magic; |
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__le16 ss_bytes; |
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__le16 ss_flags; |
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__le64 ss_seq; |
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__le64 ss_create; |
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__le64 ss_next; |
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__le32 ss_nblocks; |
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__le32 ss_nfinfo; |
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__le32 ss_sumbytes; |
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__le32 ss_pad; |
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__le64 ss_cno; |
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/* array of finfo structures */ |
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}; |
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#define NILFS_SEGSUM_MAGIC 0x1eaffa11 /* segment summary magic number */ |
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/* |
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* Segment summary flags |
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*/ |
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#define NILFS_SS_LOGBGN 0x0001 /* begins a logical segment */ |
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#define NILFS_SS_LOGEND 0x0002 /* ends a logical segment */ |
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#define NILFS_SS_SR 0x0004 /* has super root */ |
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#define NILFS_SS_SYNDT 0x0008 /* includes data only updates */ |
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#define NILFS_SS_GC 0x0010 /* segment written for cleaner operation */ |
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/** |
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* struct nilfs_btree_node - header of B-tree node block |
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* @bn_flags: flags |
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* @bn_level: level |
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* @bn_nchildren: number of children |
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* @bn_pad: padding |
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*/ |
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struct nilfs_btree_node { |
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__u8 bn_flags; |
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__u8 bn_level; |
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__le16 bn_nchildren; |
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__le32 bn_pad; |
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}; |
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/* flags */ |
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#define NILFS_BTREE_NODE_ROOT 0x01 |
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/* level */ |
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#define NILFS_BTREE_LEVEL_DATA 0 |
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#define NILFS_BTREE_LEVEL_NODE_MIN (NILFS_BTREE_LEVEL_DATA + 1) |
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#define NILFS_BTREE_LEVEL_MAX 14 /* Max level (exclusive) */ |
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/** |
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* struct nilfs_direct_node - header of built-in bmap array |
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* @dn_flags: flags |
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* @dn_pad: padding |
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*/ |
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struct nilfs_direct_node { |
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__u8 dn_flags; |
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__u8 pad[7]; |
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}; |
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/** |
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* struct nilfs_palloc_group_desc - block group descriptor |
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* @pg_nfrees: number of free entries in block group |
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*/ |
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struct nilfs_palloc_group_desc { |
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__le32 pg_nfrees; |
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}; |
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/** |
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* struct nilfs_dat_entry - disk address translation entry |
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* @de_blocknr: block number |
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* @de_start: start checkpoint number |
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* @de_end: end checkpoint number |
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* @de_rsv: reserved for future use |
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*/ |
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struct nilfs_dat_entry { |
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__le64 de_blocknr; |
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__le64 de_start; |
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__le64 de_end; |
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__le64 de_rsv; |
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}; |
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#define NILFS_MIN_DAT_ENTRY_SIZE 32 |
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/** |
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* struct nilfs_snapshot_list - snapshot list |
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* @ssl_next: next checkpoint number on snapshot list |
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* @ssl_prev: previous checkpoint number on snapshot list |
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*/ |
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struct nilfs_snapshot_list { |
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__le64 ssl_next; |
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__le64 ssl_prev; |
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}; |
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/** |
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* struct nilfs_checkpoint - checkpoint structure |
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* @cp_flags: flags |
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* @cp_checkpoints_count: checkpoints count in a block |
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* @cp_snapshot_list: snapshot list |
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* @cp_cno: checkpoint number |
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* @cp_create: creation timestamp |
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* @cp_nblk_inc: number of blocks incremented by this checkpoint |
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* @cp_inodes_count: inodes count |
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* @cp_blocks_count: blocks count |
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* @cp_ifile_inode: inode of ifile |
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*/ |
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struct nilfs_checkpoint { |
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__le32 cp_flags; |
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__le32 cp_checkpoints_count; |
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struct nilfs_snapshot_list cp_snapshot_list; |
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__le64 cp_cno; |
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__le64 cp_create; |
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__le64 cp_nblk_inc; |
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__le64 cp_inodes_count; |
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__le64 cp_blocks_count; |
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/* |
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* Do not change the byte offset of ifile inode. |
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* To keep the compatibility of the disk format, |
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* additional fields should be added behind cp_ifile_inode. |
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*/ |
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struct nilfs_inode cp_ifile_inode; |
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}; |
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#define NILFS_MIN_CHECKPOINT_SIZE (64 + NILFS_MIN_INODE_SIZE) |
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/* checkpoint flags */ |
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enum { |
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NILFS_CHECKPOINT_SNAPSHOT, |
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NILFS_CHECKPOINT_INVALID, |
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NILFS_CHECKPOINT_SKETCH, |
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NILFS_CHECKPOINT_MINOR, |
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}; |
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#define NILFS_CHECKPOINT_FNS(flag, name) \ |
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static inline void \ |
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nilfs_checkpoint_set_##name(struct nilfs_checkpoint *cp) \ |
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{ \ |
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cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) | \ |
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(1UL << NILFS_CHECKPOINT_##flag)); \ |
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} \ |
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static inline void \ |
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nilfs_checkpoint_clear_##name(struct nilfs_checkpoint *cp) \ |
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{ \ |
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cp->cp_flags = __cpu_to_le32(__le32_to_cpu(cp->cp_flags) & \ |
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~(1UL << NILFS_CHECKPOINT_##flag)); \ |
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} \ |
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static inline int \ |
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nilfs_checkpoint_##name(const struct nilfs_checkpoint *cp) \ |
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{ \ |
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return !!(__le32_to_cpu(cp->cp_flags) & \ |
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(1UL << NILFS_CHECKPOINT_##flag)); \ |
|
} |
|
|
|
NILFS_CHECKPOINT_FNS(SNAPSHOT, snapshot) |
|
NILFS_CHECKPOINT_FNS(INVALID, invalid) |
|
NILFS_CHECKPOINT_FNS(MINOR, minor) |
|
|
|
/** |
|
* struct nilfs_cpfile_header - checkpoint file header |
|
* @ch_ncheckpoints: number of checkpoints |
|
* @ch_nsnapshots: number of snapshots |
|
* @ch_snapshot_list: snapshot list |
|
*/ |
|
struct nilfs_cpfile_header { |
|
__le64 ch_ncheckpoints; |
|
__le64 ch_nsnapshots; |
|
struct nilfs_snapshot_list ch_snapshot_list; |
|
}; |
|
|
|
#define NILFS_CPFILE_FIRST_CHECKPOINT_OFFSET \ |
|
((sizeof(struct nilfs_cpfile_header) + \ |
|
sizeof(struct nilfs_checkpoint) - 1) / \ |
|
sizeof(struct nilfs_checkpoint)) |
|
|
|
/** |
|
* struct nilfs_segment_usage - segment usage |
|
* @su_lastmod: last modified timestamp |
|
* @su_nblocks: number of blocks in segment |
|
* @su_flags: flags |
|
*/ |
|
struct nilfs_segment_usage { |
|
__le64 su_lastmod; |
|
__le32 su_nblocks; |
|
__le32 su_flags; |
|
}; |
|
|
|
#define NILFS_MIN_SEGMENT_USAGE_SIZE 16 |
|
|
|
/* segment usage flag */ |
|
enum { |
|
NILFS_SEGMENT_USAGE_ACTIVE, |
|
NILFS_SEGMENT_USAGE_DIRTY, |
|
NILFS_SEGMENT_USAGE_ERROR, |
|
}; |
|
|
|
#define NILFS_SEGMENT_USAGE_FNS(flag, name) \ |
|
static inline void \ |
|
nilfs_segment_usage_set_##name(struct nilfs_segment_usage *su) \ |
|
{ \ |
|
su->su_flags = __cpu_to_le32(__le32_to_cpu(su->su_flags) | \ |
|
(1UL << NILFS_SEGMENT_USAGE_##flag));\ |
|
} \ |
|
static inline void \ |
|
nilfs_segment_usage_clear_##name(struct nilfs_segment_usage *su) \ |
|
{ \ |
|
su->su_flags = \ |
|
__cpu_to_le32(__le32_to_cpu(su->su_flags) & \ |
|
~(1UL << NILFS_SEGMENT_USAGE_##flag)); \ |
|
} \ |
|
static inline int \ |
|
nilfs_segment_usage_##name(const struct nilfs_segment_usage *su) \ |
|
{ \ |
|
return !!(__le32_to_cpu(su->su_flags) & \ |
|
(1UL << NILFS_SEGMENT_USAGE_##flag)); \ |
|
} |
|
|
|
NILFS_SEGMENT_USAGE_FNS(ACTIVE, active) |
|
NILFS_SEGMENT_USAGE_FNS(DIRTY, dirty) |
|
NILFS_SEGMENT_USAGE_FNS(ERROR, error) |
|
|
|
static inline void |
|
nilfs_segment_usage_set_clean(struct nilfs_segment_usage *su) |
|
{ |
|
su->su_lastmod = __cpu_to_le64(0); |
|
su->su_nblocks = __cpu_to_le32(0); |
|
su->su_flags = __cpu_to_le32(0); |
|
} |
|
|
|
static inline int |
|
nilfs_segment_usage_clean(const struct nilfs_segment_usage *su) |
|
{ |
|
return !__le32_to_cpu(su->su_flags); |
|
} |
|
|
|
/** |
|
* struct nilfs_sufile_header - segment usage file header |
|
* @sh_ncleansegs: number of clean segments |
|
* @sh_ndirtysegs: number of dirty segments |
|
* @sh_last_alloc: last allocated segment number |
|
*/ |
|
struct nilfs_sufile_header { |
|
__le64 sh_ncleansegs; |
|
__le64 sh_ndirtysegs; |
|
__le64 sh_last_alloc; |
|
/* ... */ |
|
}; |
|
|
|
#define NILFS_SUFILE_FIRST_SEGMENT_USAGE_OFFSET \ |
|
((sizeof(struct nilfs_sufile_header) + \ |
|
sizeof(struct nilfs_segment_usage) - 1) / \ |
|
sizeof(struct nilfs_segment_usage)) |
|
|
|
#endif /* _LINUX_NILFS2_ONDISK_H */
|
|
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