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(I'm so sorry!) Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148149150151152153154155156157158159160161162163164165166167168169170171172173174175176177178179180181182183184185186187188189190/* SPDX-License-Identifier: GPL-2.0 */
#ifndef __FAST_COMMIT_H__#define __FAST_COMMIT_H__
/* * Note this file is present in e2fsprogs/lib/ext2fs/fast_commit.h and * linux/fs/ext4/fast_commit.h. These file should always be byte identical. */
/* Fast commit tags */#define EXT4_FC_TAG_ADD_RANGE 0x0001#define EXT4_FC_TAG_DEL_RANGE 0x0002#define EXT4_FC_TAG_CREAT 0x0003#define EXT4_FC_TAG_LINK 0x0004#define EXT4_FC_TAG_UNLINK 0x0005#define EXT4_FC_TAG_INODE 0x0006#define EXT4_FC_TAG_PAD 0x0007#define EXT4_FC_TAG_TAIL 0x0008#define EXT4_FC_TAG_HEAD 0x0009
#define EXT4_FC_SUPPORTED_FEATURES 0x0
/* On disk fast commit tlv value structures */
/* Fast commit on disk tag length structure */struct ext4_fc_tl { __le16 fc_tag; __le16 fc_len;};
/* Value structure for tag EXT4_FC_TAG_HEAD. */struct ext4_fc_head { __le32 fc_features; __le32 fc_tid;};
/* Value structure for EXT4_FC_TAG_ADD_RANGE. */struct ext4_fc_add_range { __le32 fc_ino; __u8 fc_ex[12];};
/* Value structure for tag EXT4_FC_TAG_DEL_RANGE. */struct ext4_fc_del_range { __le32 fc_ino; __le32 fc_lblk; __le32 fc_len;};
/* * This is the value structure for tags EXT4_FC_TAG_CREAT, EXT4_FC_TAG_LINK * and EXT4_FC_TAG_UNLINK. */struct ext4_fc_dentry_info { __le32 fc_parent_ino; __le32 fc_ino; __u8 fc_dname[];};
/* Value structure for EXT4_FC_TAG_INODE. */struct ext4_fc_inode { __le32 fc_ino; __u8 fc_raw_inode[];};
/* Value structure for tag EXT4_FC_TAG_TAIL. */struct ext4_fc_tail { __le32 fc_tid; __le32 fc_crc;};
/* Tag base length */#define EXT4_FC_TAG_BASE_LEN (sizeof(struct ext4_fc_tl))
/* * Fast commit status codes */enum { EXT4_FC_STATUS_OK = 0, EXT4_FC_STATUS_INELIGIBLE, EXT4_FC_STATUS_SKIPPED, EXT4_FC_STATUS_FAILED,};
/* * Fast commit ineligiblity reasons: */enum { EXT4_FC_REASON_XATTR = 0, EXT4_FC_REASON_CROSS_RENAME, EXT4_FC_REASON_JOURNAL_FLAG_CHANGE, EXT4_FC_REASON_NOMEM, EXT4_FC_REASON_SWAP_BOOT, EXT4_FC_REASON_RESIZE, EXT4_FC_REASON_RENAME_DIR, EXT4_FC_REASON_FALLOC_RANGE, EXT4_FC_REASON_INODE_JOURNAL_DATA, EXT4_FC_REASON_ENCRYPTED_FILENAME, EXT4_FC_REASON_MIGRATE, EXT4_FC_REASON_VERITY, EXT4_FC_REASON_MOVE_EXT, EXT4_FC_REASON_MAX};
#ifdef __KERNEL__/* * In memory list of dentry updates that are performed on the file * system used by fast commit code. */struct ext4_fc_dentry_update { int fcd_op; /* Type of update create / unlink / link */ int fcd_parent; /* Parent inode number */ int fcd_ino; /* Inode number */ struct name_snapshot fcd_name; /* Dirent name */ struct list_head fcd_list; struct list_head fcd_dilist;};
struct ext4_fc_stats { unsigned int fc_ineligible_reason_count[EXT4_FC_REASON_MAX]; unsigned long fc_num_commits; unsigned long fc_ineligible_commits; unsigned long fc_failed_commits; unsigned long fc_skipped_commits; unsigned long fc_numblks; u64 s_fc_avg_commit_time;};
#define EXT4_FC_REPLAY_REALLOC_INCREMENT 4
/* * Physical block regions added to different inodes due to fast commit * recovery. These are set during the SCAN phase. During the replay phase, * our allocator excludes these from its allocation. This ensures that * we don't accidentally allocating a block that is going to be used by * another inode. */struct ext4_fc_alloc_region { ext4_lblk_t lblk; ext4_fsblk_t pblk; int ino, len;};
/* * Fast commit replay state. */struct ext4_fc_replay_state { int fc_replay_num_tags; int fc_replay_expected_off; int fc_current_pass; int fc_cur_tag; int fc_crc; struct ext4_fc_alloc_region *fc_regions; int fc_regions_size, fc_regions_used, fc_regions_valid; int *fc_modified_inodes; int fc_modified_inodes_used, fc_modified_inodes_size;};
#define region_last(__region) (((__region)->lblk) + ((__region)->len) - 1)#endif
static inline const char *tag2str(__u16 tag){ switch (tag) { case EXT4_FC_TAG_LINK: return "ADD_ENTRY"; case EXT4_FC_TAG_UNLINK: return "DEL_ENTRY"; case EXT4_FC_TAG_ADD_RANGE: return "ADD_RANGE"; case EXT4_FC_TAG_CREAT: return "CREAT_DENTRY"; case EXT4_FC_TAG_DEL_RANGE: return "DEL_RANGE"; case EXT4_FC_TAG_INODE: return "INODE"; case EXT4_FC_TAG_PAD: return "PAD"; case EXT4_FC_TAG_TAIL: return "TAIL"; case EXT4_FC_TAG_HEAD: return "HEAD"; default: return "ERROR"; }}
#endif /* __FAST_COMMIT_H__ */