X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=volumes.h;h=5bcaae7f03d2ef54d249ec0efbd179b049b1f755;hb=58b5610845a7a0578b7af1a1161ae4b4b3383aac;hp=af7182b87cba8a498baf9ee0ab35b9ce257b2978;hpb=059832da5f533d5ddf6ba15b7a190efe5a09ea8c;p=platform%2Fupstream%2Fbtrfs-progs.git diff --git a/volumes.h b/volumes.h index af7182b..5bcaae7 100644 --- a/volumes.h +++ b/volumes.h @@ -22,7 +22,7 @@ #include "kerncompat.h" #include "ctree.h" -#define BTRFS_STRIPE_LEN (64 * 1024) +#define BTRFS_STRIPE_LEN SZ_64K struct btrfs_device { struct list_head dev_list; @@ -108,6 +108,36 @@ struct map_lookup { struct btrfs_bio_stripe stripes[]; }; +struct btrfs_raid_attr { + int sub_stripes; /* sub_stripes info for map */ + int dev_stripes; /* stripes per dev */ + int devs_max; /* max devs to use */ + int devs_min; /* min devs needed */ + 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 */ +}; + +extern const struct btrfs_raid_attr btrfs_raid_array[BTRFS_NR_RAID_TYPES]; + +static inline enum btrfs_raid_types btrfs_bg_flags_to_raid_index(u64 flags) +{ + if (flags & BTRFS_BLOCK_GROUP_RAID10) + return BTRFS_RAID_RAID10; + else if (flags & BTRFS_BLOCK_GROUP_RAID1) + return BTRFS_RAID_RAID1; + else if (flags & BTRFS_BLOCK_GROUP_DUP) + return BTRFS_RAID_DUP; + else if (flags & BTRFS_BLOCK_GROUP_RAID0) + return BTRFS_RAID_RAID0; + else if (flags & BTRFS_BLOCK_GROUP_RAID5) + return BTRFS_RAID_RAID5; + else if (flags & BTRFS_BLOCK_GROUP_RAID6) + return BTRFS_RAID_RAID6; + + return BTRFS_RAID_SINGLE; /* BTRFS_BLOCK_GROUP_SINGLE */ +} + #define btrfs_multi_bio_size(n) (sizeof(struct btrfs_multi_bio) + \ (sizeof(struct btrfs_bio_stripe) * (n))) #define btrfs_map_lookup_size(n) (sizeof(struct map_lookup) + \ @@ -155,75 +185,120 @@ struct map_lookup { * Check if the given range cross stripes. * To ensure kernel scrub won't causing bug on with METADATA in mixed * block group + * + * Return 1 if the range crosses STRIPE boundary + * Return 0 if the range doesn't cross STRIPE boundary or it + * doesn't belong to any block group (no boundary to cross) */ -static inline int check_crossing_stripes(u64 start, u64 len) +static inline int check_crossing_stripes(struct btrfs_fs_info *fs_info, + u64 start, u64 len) +{ + struct btrfs_block_group_cache *bg_cache; + u64 bg_offset; + + bg_cache = btrfs_lookup_block_group(fs_info, start); + /* + * Does not belong to block group, no boundary to cross + * although it's a bigger problem, but here we don't care. + */ + if (!bg_cache) + return 0; + bg_offset = start - bg_cache->key.objectid; + + return (bg_offset / BTRFS_STRIPE_LEN != + (bg_offset + len - 1) / BTRFS_STRIPE_LEN); +} + +static inline u64 calc_stripe_length(u64 type, u64 length, int num_stripes) { - return (start / BTRFS_STRIPE_LEN) != - ((start + len - 1) / BTRFS_STRIPE_LEN); + u64 stripe_size; + + if (type & BTRFS_BLOCK_GROUP_RAID0) { + stripe_size = length; + stripe_size /= num_stripes; + } else if (type & BTRFS_BLOCK_GROUP_RAID10) { + stripe_size = length * 2; + stripe_size /= num_stripes; + } else if (type & BTRFS_BLOCK_GROUP_RAID5) { + stripe_size = length; + stripe_size /= (num_stripes - 1); + } else if (type & BTRFS_BLOCK_GROUP_RAID6) { + stripe_size = length; + stripe_size /= (num_stripes - 2); + } else { + stripe_size = length; + } + return stripe_size; } -int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, +int __btrfs_map_block(struct btrfs_fs_info *fs_info, int rw, u64 logical, u64 *length, u64 *type, struct btrfs_multi_bio **multi_ret, int mirror_num, u64 **raid_map); -int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, +int btrfs_map_block(struct btrfs_fs_info *fs_info, int rw, u64 logical, u64 *length, struct btrfs_multi_bio **multi_ret, int mirror_num, u64 **raid_map_ret); -int btrfs_next_bg(struct btrfs_mapping_tree *map_tree, u64 *logical, +int btrfs_next_bg(struct btrfs_fs_info *map_tree, u64 *logical, u64 *size, u64 type); -static inline int btrfs_next_bg_metadata(struct btrfs_mapping_tree *map_tree, - u64 *logical, u64 *size) +static inline int btrfs_next_bg_metadata(struct btrfs_fs_info *fs_info, + u64 *logical, u64 *size) { - return btrfs_next_bg(map_tree, logical, size, + return btrfs_next_bg(fs_info, logical, size, BTRFS_BLOCK_GROUP_METADATA); } -static inline int btrfs_next_bg_system(struct btrfs_mapping_tree *map_tree, - u64 *logical, u64 *size) +static inline int btrfs_next_bg_system(struct btrfs_fs_info *fs_info, + u64 *logical, u64 *size) { - return btrfs_next_bg(map_tree, logical, size, + return btrfs_next_bg(fs_info, logical, size, BTRFS_BLOCK_GROUP_SYSTEM); } -int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree, +int btrfs_rmap_block(struct btrfs_fs_info *fs_info, u64 chunk_start, u64 physical, u64 devid, u64 **logical, int *naddrs, int *stripe_len); -int btrfs_read_sys_array(struct btrfs_root *root); -int btrfs_read_chunk_tree(struct btrfs_root *root); +int btrfs_read_sys_array(struct btrfs_fs_info *fs_info); +int btrfs_read_chunk_tree(struct btrfs_fs_info *fs_info); int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *extent_root, u64 *start, + struct btrfs_fs_info *fs_info, u64 *start, u64 *num_bytes, u64 type); int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *extent_root, u64 *start, + struct btrfs_fs_info *fs_info, u64 *start, u64 num_bytes, u64 type, int convert); -int btrfs_read_super_device(struct btrfs_root *root, struct extent_buffer *buf); -int btrfs_add_device(struct btrfs_trans_handle *trans, - struct btrfs_root *root, - struct btrfs_device *device); int btrfs_open_devices(struct btrfs_fs_devices *fs_devices, int flags); int btrfs_close_devices(struct btrfs_fs_devices *fs_devices); void btrfs_close_all_devices(void); int btrfs_add_device(struct btrfs_trans_handle *trans, - struct btrfs_root *root, + struct btrfs_fs_info *fs_info, struct btrfs_device *device); int btrfs_update_device(struct btrfs_trans_handle *trans, struct btrfs_device *device); int btrfs_scan_one_device(int fd, const char *path, struct btrfs_fs_devices **fs_devices_ret, u64 *total_devs, u64 super_offset, unsigned sbflags); -int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len); +int btrfs_num_copies(struct btrfs_fs_info *fs_info, u64 logical, u64 len); struct list_head *btrfs_scanned_uuids(void); -int btrfs_add_system_chunk(struct btrfs_trans_handle *trans, - struct btrfs_root *root, struct btrfs_key *key, +int btrfs_add_system_chunk(struct btrfs_fs_info *fs_info, struct btrfs_key *key, struct btrfs_chunk *chunk, int item_size); -int btrfs_chunk_readonly(struct btrfs_root *root, u64 chunk_offset); +int btrfs_chunk_readonly(struct btrfs_fs_info *fs_info, u64 chunk_offset); struct btrfs_device * btrfs_find_device_by_devid(struct btrfs_fs_devices *fs_devices, u64 devid, int instance); -struct btrfs_device *btrfs_find_device(struct btrfs_root *root, u64 devid, +struct btrfs_device *btrfs_find_device(struct btrfs_fs_info *fs_info, u64 devid, u8 *uuid, u8 *fsid); int write_raid56_with_parity(struct btrfs_fs_info *info, struct extent_buffer *eb, struct btrfs_multi_bio *multi, u64 stripe_len, u64 *raid_map); +int btrfs_check_chunk_valid(struct btrfs_fs_info *fs_info, + struct extent_buffer *leaf, + struct btrfs_chunk *chunk, + int slot, u64 logical); +u64 btrfs_stripe_length(struct btrfs_fs_info *fs_info, + struct extent_buffer *leaf, + struct btrfs_chunk *chunk); +int btrfs_fix_device_size(struct btrfs_fs_info *fs_info, + struct btrfs_device *device); +int btrfs_fix_super_size(struct btrfs_fs_info *fs_info); +int btrfs_fix_device_and_super_size(struct btrfs_fs_info *fs_info); #endif