diff options
Diffstat (limited to 'fs/btrfs/volumes.h')
| -rw-r--r-- | fs/btrfs/volumes.h | 25 |
1 files changed, 19 insertions, 6 deletions
diff --git a/fs/btrfs/volumes.h b/fs/btrfs/volumes.h index aefce895e994..ed806649a473 100644 --- a/fs/btrfs/volumes.h +++ b/fs/btrfs/volumes.h @@ -210,6 +210,8 @@ BTRFS_DEVICE_GETSET_FUNCS(bytes_used); struct btrfs_fs_devices { u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ + u8 metadata_uuid[BTRFS_FSID_SIZE]; + bool fsid_change; struct list_head fs_list; u64 num_devices; @@ -218,6 +220,10 @@ struct btrfs_fs_devices { u64 missing_devices; u64 total_rw_bytes; u64 total_devices; + + /* Highest generation number of seen devices */ + u64 latest_generation; + struct block_device *latest_bdev; /* all of the devices in the FS, protected by a mutex @@ -261,15 +267,12 @@ struct btrfs_fs_devices { * we allocate are actually btrfs_io_bios. We'll cram as much of * struct btrfs_bio as we can into this over time. */ -typedef void (btrfs_io_bio_end_io_t) (struct btrfs_io_bio *bio, int err); struct btrfs_io_bio { unsigned int mirror_num; unsigned int stripe_index; u64 logical; u8 *csum; u8 csum_inline[BTRFS_BIO_INLINE_CSUM_SIZE]; - u8 *csum_allocated; - btrfs_io_bio_end_io_t *end_io; struct bvec_iter iter; /* * This member must come last, bio_alloc_bioset will allocate enough @@ -283,15 +286,20 @@ static inline struct btrfs_io_bio *btrfs_io_bio(struct bio *bio) return container_of(bio, struct btrfs_io_bio, bio); } +static inline void btrfs_io_bio_free_csum(struct btrfs_io_bio *io_bio) +{ + if (io_bio->csum != io_bio->csum_inline) { + kfree(io_bio->csum); + io_bio->csum = NULL; + } +} + struct btrfs_bio_stripe { struct btrfs_device *dev; u64 physical; u64 length; /* only used for discard mappings */ }; -struct btrfs_bio; -typedef void (btrfs_bio_end_io_t) (struct btrfs_bio *bio, int err); - struct btrfs_bio { refcount_t refs; atomic_t stripes_pending; @@ -331,6 +339,8 @@ struct btrfs_raid_attr { int tolerated_failures; /* max tolerated fail devs */ int devs_increment; /* ndevs has to be a multiple of this */ int ncopies; /* how many copies to data has */ + int nparity; /* number of stripes worth of bytes to store + * parity information */ int mindev_error; /* error code if min devs requisite is unmet */ const char raid_name[8]; /* name of the raid */ u64 bg_flag; /* block group flag of the raid */ @@ -430,6 +440,7 @@ int btrfs_init_new_device(struct btrfs_fs_info *fs_info, const char *path); int btrfs_balance(struct btrfs_fs_info *fs_info, struct btrfs_balance_control *bctl, struct btrfs_ioctl_balance_args *bargs); +void btrfs_describe_block_groups(u64 flags, char *buf, u32 size_buf); int btrfs_resume_balance_async(struct btrfs_fs_info *fs_info); int btrfs_recover_balance(struct btrfs_fs_info *fs_info); int btrfs_pause_balance(struct btrfs_fs_info *fs_info); @@ -462,6 +473,8 @@ unsigned long btrfs_full_stripe_len(struct btrfs_fs_info *fs_info, int btrfs_finish_chunk_alloc(struct btrfs_trans_handle *trans, u64 chunk_offset, u64 chunk_size); int btrfs_remove_chunk(struct btrfs_trans_handle *trans, u64 chunk_offset); +struct extent_map *btrfs_get_chunk_map(struct btrfs_fs_info *fs_info, + u64 logical, u64 length); static inline void btrfs_dev_stat_inc(struct btrfs_device *dev, int index) |