diff options
Diffstat (limited to 'fs/ext4/ext4.h')
| -rw-r--r-- | fs/ext4/ext4.h | 118 |
1 files changed, 97 insertions, 21 deletions
diff --git a/fs/ext4/ext4.h b/fs/ext4/ext4.h index 3c51e243450d..90ff5acaf11f 100644 --- a/fs/ext4/ext4.h +++ b/fs/ext4/ext4.h @@ -1034,7 +1034,14 @@ struct ext4_inode_info { */ struct rw_semaphore xattr_sem; - struct list_head i_orphan; /* unlinked but open inodes */ + /* + * Inodes with EXT4_STATE_ORPHAN_FILE use i_orphan_idx. Otherwise + * i_orphan is used. + */ + union { + struct list_head i_orphan; /* unlinked but open inodes */ + unsigned int i_orphan_idx; /* Index in orphan file */ + }; /* Fast commit related info */ @@ -1086,15 +1093,6 @@ struct ext4_inode_info { * by other means, so we have i_data_sem. */ struct rw_semaphore i_data_sem; - /* - * i_mmap_sem is for serializing page faults with truncate / punch hole - * operations. We have to make sure that new page cannot be faulted in - * a section of the inode that is being punched. We cannot easily use - * i_data_sem for this since we need protection for the whole punch - * operation and i_data_sem ranks below transaction start so we have - * to occasionally drop it. - */ - struct rw_semaphore i_mmap_sem; struct inode vfs_inode; struct jbd2_inode *jinode; @@ -1428,7 +1426,8 @@ struct ext4_super_block { __u8 s_last_error_errcode; __le16 s_encoding; /* Filename charset encoding */ __le16 s_encoding_flags; /* Filename charset encoding flags */ - __le32 s_reserved[95]; /* Padding to the end of the block */ + __le32 s_orphan_file_inum; /* Inode for tracking orphan inodes */ + __le32 s_reserved[94]; /* Padding to the end of the block */ __le32 s_checksum; /* crc32c(superblock) */ }; @@ -1447,6 +1446,54 @@ struct ext4_super_block { #define EXT4_ENC_UTF8_12_1 1 +/* Types of ext4 journal triggers */ +enum ext4_journal_trigger_type { + EXT4_JTR_ORPHAN_FILE, + EXT4_JTR_NONE /* This must be the last entry for indexing to work! */ +}; + +#define EXT4_JOURNAL_TRIGGER_COUNT EXT4_JTR_NONE + +struct ext4_journal_trigger { + struct jbd2_buffer_trigger_type tr_triggers; + struct super_block *sb; +}; + +static inline struct ext4_journal_trigger *EXT4_TRIGGER( + struct jbd2_buffer_trigger_type *trigger) +{ + return container_of(trigger, struct ext4_journal_trigger, tr_triggers); +} + +#define EXT4_ORPHAN_BLOCK_MAGIC 0x0b10ca04 + +/* Structure at the tail of orphan block */ +struct ext4_orphan_block_tail { + __le32 ob_magic; + __le32 ob_checksum; +}; + +static inline int ext4_inodes_per_orphan_block(struct super_block *sb) +{ + return (sb->s_blocksize - sizeof(struct ext4_orphan_block_tail)) / + sizeof(u32); +} + +struct ext4_orphan_block { + atomic_t ob_free_entries; /* Number of free orphan entries in block */ + struct buffer_head *ob_bh; /* Buffer for orphan block */ +}; + +/* + * Info about orphan file. + */ +struct ext4_orphan_info { + int of_blocks; /* Number of orphan blocks in a file */ + __u32 of_csum_seed; /* Checksum seed for orphan file */ + struct ext4_orphan_block *of_binfo; /* Array with info about orphan + * file blocks */ +}; + /* * fourth extended-fs super-block data in memory */ @@ -1501,9 +1548,11 @@ struct ext4_sb_info { /* Journaling */ struct journal_s *s_journal; - struct list_head s_orphan; - struct mutex s_orphan_lock; unsigned long s_ext4_flags; /* Ext4 superblock flags */ + struct mutex s_orphan_lock; /* Protects on disk list changes */ + struct list_head s_orphan; /* List of orphaned inodes in on disk + list */ + struct ext4_orphan_info s_orphan_info; unsigned long s_commit_interval; u32 s_max_batch_time; u32 s_min_batch_time; @@ -1536,6 +1585,9 @@ struct ext4_sb_info { unsigned int s_mb_free_pending; struct list_head s_freed_data_list; /* List of blocks to be freed after commit completed */ + struct list_head s_discard_list; + struct work_struct s_discard_work; + atomic_t s_retry_alloc_pending; struct rb_root s_mb_avg_fragment_size_root; rwlock_t s_mb_rb_lock; struct list_head *s_mb_largest_free_orders; @@ -1625,6 +1677,9 @@ struct ext4_sb_info { struct mb_cache *s_ea_inode_cache; spinlock_t s_es_lock ____cacheline_aligned_in_smp; + /* Journal triggers for checksum computation */ + struct ext4_journal_trigger s_journal_triggers[EXT4_JOURNAL_TRIGGER_COUNT]; + /* Ratelimit ext4 messages. */ struct ratelimit_state s_err_ratelimit_state; struct ratelimit_state s_warning_ratelimit_state; @@ -1835,6 +1890,7 @@ enum { EXT4_STATE_LUSTRE_EA_INODE, /* Lustre-style ea_inode */ EXT4_STATE_VERITY_IN_PROGRESS, /* building fs-verity Merkle tree */ EXT4_STATE_FC_COMMITTING, /* Fast commit ongoing */ + EXT4_STATE_ORPHAN_FILE, /* Inode orphaned in orphan file */ }; #define EXT4_INODE_BIT_FNS(name, field, offset) \ @@ -1936,6 +1992,7 @@ static inline bool ext4_verity_in_progress(struct inode *inode) */ #define EXT4_FEATURE_COMPAT_FAST_COMMIT 0x0400 #define EXT4_FEATURE_COMPAT_STABLE_INODES 0x0800 +#define EXT4_FEATURE_COMPAT_ORPHAN_FILE 0x1000 /* Orphan file exists */ #define EXT4_FEATURE_RO_COMPAT_SPARSE_SUPER 0x0001 #define EXT4_FEATURE_RO_COMPAT_LARGE_FILE 0x0002 @@ -1956,6 +2013,8 @@ static inline bool ext4_verity_in_progress(struct inode *inode) #define EXT4_FEATURE_RO_COMPAT_READONLY 0x1000 #define EXT4_FEATURE_RO_COMPAT_PROJECT 0x2000 #define EXT4_FEATURE_RO_COMPAT_VERITY 0x8000 +#define EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT 0x10000 /* Orphan file may be + non-empty */ #define EXT4_FEATURE_INCOMPAT_COMPRESSION 0x0001 #define EXT4_FEATURE_INCOMPAT_FILETYPE 0x0002 @@ -2039,6 +2098,7 @@ EXT4_FEATURE_COMPAT_FUNCS(dir_index, DIR_INDEX) EXT4_FEATURE_COMPAT_FUNCS(sparse_super2, SPARSE_SUPER2) EXT4_FEATURE_COMPAT_FUNCS(fast_commit, FAST_COMMIT) EXT4_FEATURE_COMPAT_FUNCS(stable_inodes, STABLE_INODES) +EXT4_FEATURE_COMPAT_FUNCS(orphan_file, ORPHAN_FILE) EXT4_FEATURE_RO_COMPAT_FUNCS(sparse_super, SPARSE_SUPER) EXT4_FEATURE_RO_COMPAT_FUNCS(large_file, LARGE_FILE) @@ -2053,6 +2113,7 @@ EXT4_FEATURE_RO_COMPAT_FUNCS(metadata_csum, METADATA_CSUM) EXT4_FEATURE_RO_COMPAT_FUNCS(readonly, READONLY) EXT4_FEATURE_RO_COMPAT_FUNCS(project, PROJECT) EXT4_FEATURE_RO_COMPAT_FUNCS(verity, VERITY) +EXT4_FEATURE_RO_COMPAT_FUNCS(orphan_present, ORPHAN_PRESENT) EXT4_FEATURE_INCOMPAT_FUNCS(compression, COMPRESSION) EXT4_FEATURE_INCOMPAT_FUNCS(filetype, FILETYPE) @@ -2086,7 +2147,8 @@ EXT4_FEATURE_INCOMPAT_FUNCS(casefold, CASEFOLD) EXT4_FEATURE_RO_COMPAT_LARGE_FILE| \ EXT4_FEATURE_RO_COMPAT_BTREE_DIR) -#define EXT4_FEATURE_COMPAT_SUPP EXT4_FEATURE_COMPAT_EXT_ATTR +#define EXT4_FEATURE_COMPAT_SUPP (EXT4_FEATURE_COMPAT_EXT_ATTR| \ + EXT4_FEATURE_COMPAT_ORPHAN_FILE) #define EXT4_FEATURE_INCOMPAT_SUPP (EXT4_FEATURE_INCOMPAT_FILETYPE| \ EXT4_FEATURE_INCOMPAT_RECOVER| \ EXT4_FEATURE_INCOMPAT_META_BG| \ @@ -2111,7 +2173,8 @@ EXT4_FEATURE_INCOMPAT_FUNCS(casefold, CASEFOLD) EXT4_FEATURE_RO_COMPAT_METADATA_CSUM|\ EXT4_FEATURE_RO_COMPAT_QUOTA |\ EXT4_FEATURE_RO_COMPAT_PROJECT |\ - EXT4_FEATURE_RO_COMPAT_VERITY) + EXT4_FEATURE_RO_COMPAT_VERITY |\ + EXT4_FEATURE_RO_COMPAT_ORPHAN_PRESENT) #define EXTN_FEATURE_FUNCS(ver) \ static inline bool ext4_has_unknown_ext##ver##_compat_features(struct super_block *sb) \ @@ -2147,6 +2210,8 @@ static inline bool ext4_has_incompat_features(struct super_block *sb) return (EXT4_SB(sb)->s_es->s_feature_incompat != 0); } +extern int ext4_feature_set_ok(struct super_block *sb, int readonly); + /* * Superblock flags */ @@ -2159,7 +2224,6 @@ static inline int ext4_forced_shutdown(struct ext4_sb_info *sbi) return test_bit(EXT4_FLAGS_SHUTDOWN, &sbi->s_ext4_flags); } - /* * Default values for user and/or group using reserved blocks */ @@ -2920,13 +2984,14 @@ int ext4_get_block(struct inode *inode, sector_t iblock, int ext4_da_get_block_prep(struct inode *inode, sector_t iblock, struct buffer_head *bh, int create); int ext4_walk_page_buffers(handle_t *handle, + struct inode *inode, struct buffer_head *head, unsigned from, unsigned to, int *partial, - int (*fn)(handle_t *handle, + int (*fn)(handle_t *handle, struct inode *inode, struct buffer_head *bh)); -int do_journal_get_write_access(handle_t *handle, +int do_journal_get_write_access(handle_t *handle, struct inode *inode, struct buffer_head *bh); #define FALL_BACK_TO_NONDELALLOC 1 #define CONVERT_INLINE_DATA 2 @@ -2972,7 +3037,6 @@ extern int ext4_chunk_trans_blocks(struct inode *, int nrblocks); extern int ext4_zero_partial_blocks(handle_t *handle, struct inode *inode, loff_t lstart, loff_t lend); extern vm_fault_t ext4_page_mkwrite(struct vm_fault *vmf); -extern vm_fault_t ext4_filemap_fault(struct vm_fault *vmf); extern qsize_t *ext4_get_reserved_space(struct inode *inode); extern int ext4_get_projid(struct inode *inode, kprojid_t *projid); extern void ext4_da_release_space(struct inode *inode, int to_free); @@ -3006,8 +3070,6 @@ extern int ext4_init_new_dir(handle_t *handle, struct inode *dir, struct inode *inode); extern int ext4_dirblock_csum_verify(struct inode *inode, struct buffer_head *bh); -extern int ext4_orphan_add(handle_t *, struct inode *); -extern int ext4_orphan_del(handle_t *, struct inode *); extern int ext4_htree_fill_tree(struct file *dir_file, __u32 start_hash, __u32 start_minor_hash, __u32 *next_hash); extern int ext4_search_dir(struct buffer_head *bh, @@ -3476,6 +3538,7 @@ static inline bool ext4_is_quota_journalled(struct super_block *sb) return (ext4_has_feature_quota(sb) || sbi->s_qf_names[USRQUOTA] || sbi->s_qf_names[GRPQUOTA]); } +int ext4_enable_quotas(struct super_block *sb); #endif /* @@ -3737,6 +3800,19 @@ extern void ext4_stop_mmpd(struct ext4_sb_info *sbi); /* verity.c */ extern const struct fsverity_operations ext4_verityops; +/* orphan.c */ +extern int ext4_orphan_add(handle_t *, struct inode *); +extern int ext4_orphan_del(handle_t *, struct inode *); +extern void ext4_orphan_cleanup(struct super_block *sb, + struct ext4_super_block *es); +extern void ext4_release_orphan_info(struct super_block *sb); +extern int ext4_init_orphan_info(struct super_block *sb); +extern int ext4_orphan_file_empty(struct super_block *sb); +extern void ext4_orphan_file_block_trigger( + struct jbd2_buffer_trigger_type *triggers, + struct buffer_head *bh, + void *data, size_t size); + /* * Add new method to test whether block and inode bitmaps are properly * initialized. With uninit_bg reading the block from disk is not enough |