diff options
Diffstat (limited to 'fs/btrfs/ctree.h')
| -rw-r--r-- | fs/btrfs/ctree.h | 105 |
1 files changed, 84 insertions, 21 deletions
diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h index 9c21e214d29e..4db85b9dc7ed 100644 --- a/fs/btrfs/ctree.h +++ b/fs/btrfs/ctree.h @@ -107,14 +107,6 @@ struct btrfs_ioctl_encoded_io_args; #define BTRFS_STAT_CURR 0 #define BTRFS_STAT_PREV 1 -/* - * Count how many BTRFS_MAX_EXTENT_SIZE cover the @size - */ -static inline u32 count_max_extents(u64 size) -{ - return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); -} - static inline unsigned long btrfs_chunk_item_size(int num_stripes) { BUG_ON(num_stripes == 0); @@ -230,6 +222,13 @@ struct btrfs_root_backup { #define BTRFS_SUPER_INFO_SIZE 4096 /* + * The reserved space at the beginning of each device. + * It covers the primary super block and leaves space for potential use by other + * tools like bootloaders or to lower potential damage of accidental overwrite. + */ +#define BTRFS_DEVICE_RANGE_RESERVED (SZ_1M) + +/* * the super block basically lists the main trees of the FS * it currently lacks any block count etc etc */ @@ -248,8 +247,12 @@ struct btrfs_super_block { __le64 chunk_root; __le64 log_root; - /* this will help find the new super based on the log root */ - __le64 log_root_transid; + /* + * This member has never been utilized since the very beginning, thus + * it's always 0 regardless of kernel version. We always use + * generation + 1 to read log tree root. So here we mark it deprecated. + */ + __le64 __unused_log_root_transid; __le64 total_bytes; __le64 bytes_used; __le64 root_dir_objectid; @@ -635,6 +638,9 @@ enum { /* Indicate we have half completed snapshot deletions pending. */ BTRFS_FS_UNFINISHED_DROPS, + /* Indicate we have to finish a zone to do next allocation. */ + BTRFS_FS_NEED_ZONE_FINISH, + #if BITS_PER_LONG == 32 /* Indicate if we have error/warn message printed on 32bit systems */ BTRFS_FS_32BIT_ERROR, @@ -656,6 +662,18 @@ enum btrfs_exclusive_operation { BTRFS_EXCLOP_SWAP_ACTIVATE, }; +/* Store data about transaction commits, exported via sysfs. */ +struct btrfs_commit_stats { + /* Total number of commits */ + u64 commit_count; + /* The maximum commit duration so far in ns */ + u64 max_commit_dur; + /* The last commit duration in ns */ + u64 last_commit_dur; + /* The total commit duration in ns */ + u64 total_commit_dur; +}; + struct btrfs_fs_info { u8 chunk_tree_uuid[BTRFS_UUID_SIZE]; unsigned long flags; @@ -850,11 +868,11 @@ struct btrfs_fs_info { struct btrfs_workqueue *hipri_workers; struct btrfs_workqueue *delalloc_workers; struct btrfs_workqueue *flush_workers; - struct btrfs_workqueue *endio_workers; - struct btrfs_workqueue *endio_meta_workers; - struct btrfs_workqueue *endio_raid56_workers; + struct workqueue_struct *endio_workers; + struct workqueue_struct *endio_meta_workers; + struct workqueue_struct *endio_raid56_workers; struct workqueue_struct *rmw_workers; - struct btrfs_workqueue *endio_meta_write_workers; + struct workqueue_struct *compressed_write_workers; struct btrfs_workqueue *endio_write_workers; struct btrfs_workqueue *endio_freespace_worker; struct btrfs_workqueue *caching_workers; @@ -1032,6 +1050,12 @@ struct btrfs_fs_info { u32 csums_per_leaf; u32 stripesize; + /* + * Maximum size of an extent. BTRFS_MAX_EXTENT_SIZE on regular + * filesystem, on zoned it depends on the device constraints. + */ + u64 max_extent_size; + /* Block groups and devices containing active swapfiles. */ spinlock_t swapfile_pins_lock; struct rb_root swapfile_pins; @@ -1047,6 +1071,8 @@ struct btrfs_fs_info { */ u64 zone_size; + /* Max size to emit ZONE_APPEND write command */ + u64 max_zone_append_size; struct mutex zoned_meta_io_lock; spinlock_t treelog_bg_lock; u64 treelog_bg; @@ -1063,6 +1089,11 @@ struct btrfs_fs_info { spinlock_t zone_active_bgs_lock; struct list_head zone_active_bgs; + /* Waiters when BTRFS_FS_NEED_ZONE_FINISH is set */ + wait_queue_head_t zone_finish_wait; + + /* Updates are not protected by any lock */ + struct btrfs_commit_stats commit_stats; #ifdef CONFIG_BTRFS_FS_REF_VERIFY spinlock_t ref_verify_lock; @@ -2475,8 +2506,6 @@ BTRFS_SETGET_STACK_FUNCS(super_chunk_root_level, struct btrfs_super_block, chunk_root_level, 8); BTRFS_SETGET_STACK_FUNCS(super_log_root, struct btrfs_super_block, log_root, 64); -BTRFS_SETGET_STACK_FUNCS(super_log_root_transid, struct btrfs_super_block, - log_root_transid, 64); BTRFS_SETGET_STACK_FUNCS(super_log_root_level, struct btrfs_super_block, log_root_level, 8); BTRFS_SETGET_STACK_FUNCS(super_total_bytes, struct btrfs_super_block, @@ -2733,8 +2762,16 @@ int btrfs_get_extent_inline_ref_type(const struct extent_buffer *eb, enum btrfs_inline_ref_type is_data); u64 hash_extent_data_ref(u64 root_objectid, u64 owner, u64 offset); +static inline u8 *btrfs_csum_ptr(const struct btrfs_fs_info *fs_info, u8 *csums, + u64 offset) +{ + u64 offset_in_sectors = offset >> fs_info->sectorsize_bits; + + return csums + offset_in_sectors * fs_info->csum_size; +} + /* - * Take the number of bytes to be checksummmed and figure out how many leaves + * Take the number of bytes to be checksummed and figure out how many leaves * it would require to store the csums for that many bytes. */ static inline u64 btrfs_csum_bytes_to_leaves( @@ -3251,11 +3288,18 @@ void btrfs_inode_safe_disk_i_size_write(struct btrfs_inode *inode, u64 new_i_siz u64 btrfs_file_extent_end(const struct btrfs_path *path); /* inode.c */ -void btrfs_submit_data_bio(struct inode *inode, struct bio *bio, - int mirror_num, enum btrfs_compression_type compress_type); +void btrfs_submit_data_write_bio(struct inode *inode, struct bio *bio, int mirror_num); +void btrfs_submit_data_read_bio(struct inode *inode, struct bio *bio, + int mirror_num, enum btrfs_compression_type compress_type); +int btrfs_check_sector_csum(struct btrfs_fs_info *fs_info, struct page *page, + u32 pgoff, u8 *csum, const u8 * const csum_expected); +int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio, + u32 bio_offset, struct page *page, u32 pgoff); unsigned int btrfs_verify_data_csum(struct btrfs_bio *bbio, u32 bio_offset, struct page *page, u64 start, u64 end); +int btrfs_check_data_csum(struct inode *inode, struct btrfs_bio *bbio, + u32 bio_offset, struct page *page, u32 pgoff); struct extent_map *btrfs_get_extent_fiemap(struct btrfs_inode *inode, u64 start, u64 len); noinline int can_nocow_extent(struct inode *inode, u64 offset, u64 *len, @@ -3305,9 +3349,9 @@ void btrfs_new_inode_args_destroy(struct btrfs_new_inode_args *args); struct inode *btrfs_new_subvol_inode(struct user_namespace *mnt_userns, struct inode *dir); void btrfs_set_delalloc_extent(struct inode *inode, struct extent_state *state, - unsigned *bits); + u32 bits); void btrfs_clear_delalloc_extent(struct inode *inode, - struct extent_state *state, unsigned *bits); + struct extent_state *state, u32 bits); void btrfs_merge_delalloc_extent(struct inode *inode, struct extent_state *new, struct extent_state *other); void btrfs_split_delalloc_extent(struct inode *inode, @@ -3353,6 +3397,12 @@ int btrfs_writepage_cow_fixup(struct page *page); void btrfs_writepage_endio_finish_ordered(struct btrfs_inode *inode, struct page *page, u64 start, u64 end, bool uptodate); +int btrfs_encoded_io_compression_from_extent(struct btrfs_fs_info *fs_info, + int compress_type); +int btrfs_encoded_read_regular_fill_pages(struct btrfs_inode *inode, + u64 file_offset, u64 disk_bytenr, + u64 disk_io_size, + struct page **pages); ssize_t btrfs_encoded_read(struct kiocb *iocb, struct iov_iter *iter, struct btrfs_ioctl_encoded_io_args *encoded); ssize_t btrfs_do_encoded_write(struct kiocb *iocb, struct iov_iter *from, @@ -4009,6 +4059,19 @@ static inline bool btrfs_is_zoned(const struct btrfs_fs_info *fs_info) return fs_info->zone_size > 0; } +/* + * Count how many fs_info->max_extent_size cover the @size + */ +static inline u32 count_max_extents(struct btrfs_fs_info *fs_info, u64 size) +{ +#ifdef CONFIG_BTRFS_FS_RUN_SANITY_TESTS + if (!fs_info) + return div_u64(size + BTRFS_MAX_EXTENT_SIZE - 1, BTRFS_MAX_EXTENT_SIZE); +#endif + + return div_u64(size + fs_info->max_extent_size - 1, fs_info->max_extent_size); +} + static inline bool btrfs_is_data_reloc_root(const struct btrfs_root *root) { return root->root_key.objectid == BTRFS_DATA_RELOC_TREE_OBJECTID; |