X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=volumes.h;h=ee7d56abcaa766ebbb63f1f1ee2e9ce53a62b340;hb=52bfe9ef78fdf6c1f1c5ceb3f7a8bf8bf2164775;hp=7104d36e6ed5fe70d008d96bb842fbe0e2a3477b;hpb=bb42e12554060236ad4780e679aa99f379e96b0c;p=platform%2Fupstream%2Fbtrfs-progs.git diff --git a/volumes.h b/volumes.h index 7104d36..ee7d56a 100644 --- a/volumes.h +++ b/volumes.h @@ -16,8 +16,14 @@ * Boston, MA 021110-1307, USA. */ -#ifndef __BTRFS_VOLUMES_ -#define __BTRFS_VOLUMES_ +#ifndef __BTRFS_VOLUMES_H__ +#define __BTRFS_VOLUMES_H__ + +#include "kerncompat.h" +#include "ctree.h" + +#define BTRFS_STRIPE_LEN (64 * 1024) + struct btrfs_device { struct list_head dev_list; struct btrfs_root *dev_root; @@ -36,6 +42,8 @@ struct btrfs_device { u64 total_devs; u64 super_bytes_used; + u64 generation; + /* the internal btrfs device id */ u64 devid; @@ -64,7 +72,7 @@ struct btrfs_device { struct btrfs_fs_devices { u8 fsid[BTRFS_FSID_SIZE]; /* FS specific uuid */ - /* the device with this id has the most recent coyp of the super */ + /* the device with this id has the most recent copy of the super */ u64 latest_devid; u64 latest_trans; u64 lowest_devid; @@ -88,22 +96,111 @@ struct btrfs_multi_bio { struct btrfs_bio_stripe stripes[]; }; +struct map_lookup { + struct cache_extent ce; + u64 type; + int io_align; + int io_width; + int stripe_len; + int sector_size; + int num_stripes; + int sub_stripes; + struct btrfs_bio_stripe stripes[]; +}; + #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) + \ + (sizeof(struct btrfs_bio_stripe) * (n))) + +/* + * Restriper's general type filter + */ +#define BTRFS_BALANCE_DATA (1ULL << 0) +#define BTRFS_BALANCE_SYSTEM (1ULL << 1) +#define BTRFS_BALANCE_METADATA (1ULL << 2) + +#define BTRFS_BALANCE_TYPE_MASK (BTRFS_BALANCE_DATA | \ + BTRFS_BALANCE_SYSTEM | \ + BTRFS_BALANCE_METADATA) + +#define BTRFS_BALANCE_FORCE (1ULL << 3) +#define BTRFS_BALANCE_RESUME (1ULL << 4) + +/* + * Balance filters + */ +#define BTRFS_BALANCE_ARGS_PROFILES (1ULL << 0) +#define BTRFS_BALANCE_ARGS_USAGE (1ULL << 1) +#define BTRFS_BALANCE_ARGS_DEVID (1ULL << 2) +#define BTRFS_BALANCE_ARGS_DRANGE (1ULL << 3) +#define BTRFS_BALANCE_ARGS_VRANGE (1ULL << 4) +#define BTRFS_BALANCE_ARGS_LIMIT (1ULL << 5) +#define BTRFS_BALANCE_ARGS_LIMIT_RANGE (1ULL << 6) +#define BTRFS_BALANCE_ARGS_STRIPES_RANGE (1ULL << 7) +#define BTRFS_BALANCE_ARGS_USAGE_RANGE (1ULL << 10) + +/* + * Profile changing flags. When SOFT is set we won't relocate chunk if + * it already has the target profile (even though it may be + * half-filled). + */ +#define BTRFS_BALANCE_ARGS_CONVERT (1ULL << 8) +#define BTRFS_BALANCE_ARGS_SOFT (1ULL << 9) + +#define BTRFS_RAID5_P_STRIPE ((u64)-2) +#define BTRFS_RAID6_Q_STRIPE ((u64)-1) + +/* + * 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(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); +} -int btrfs_alloc_dev_extent(struct btrfs_trans_handle *trans, - struct btrfs_device *device, - u64 chunk_tree, u64 chunk_objectid, - u64 chunk_offset, - u64 num_bytes, u64 *start); int __btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, u64 logical, u64 *length, u64 *type, - struct btrfs_multi_bio **multi_ret, int mirror_num); + struct btrfs_multi_bio **multi_ret, int mirror_num, + u64 **raid_map); int btrfs_map_block(struct btrfs_mapping_tree *map_tree, int rw, u64 logical, u64 *length, - struct btrfs_multi_bio **multi_ret, int mirror_num); -int btrfs_next_metadata(struct btrfs_mapping_tree *map_tree, u64 *logical, - u64 *size); + 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, + u64 *size, u64 type); +static inline int btrfs_next_bg_metadata(struct btrfs_mapping_tree *map_tree, + u64 *logical, u64 *size) +{ + return btrfs_next_bg(map_tree, logical, size, + BTRFS_BLOCK_GROUP_METADATA); +} +static inline int btrfs_next_bg_system(struct btrfs_mapping_tree *map_tree, + u64 *logical, u64 *size) +{ + return btrfs_next_bg(map_tree, logical, size, + BTRFS_BLOCK_GROUP_SYSTEM); +} int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree, u64 chunk_start, u64 physical, u64 devid, u64 **logical, int *naddrs, int *stripe_len); @@ -114,7 +211,7 @@ int btrfs_alloc_chunk(struct btrfs_trans_handle *trans, u64 *num_bytes, u64 type); int btrfs_alloc_data_chunk(struct btrfs_trans_handle *trans, struct btrfs_root *extent_root, u64 *start, - u64 num_bytes, u64 type); + 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, @@ -122,6 +219,7 @@ int btrfs_add_device(struct btrfs_trans_handle *trans, 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_device *device); @@ -129,13 +227,24 @@ 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); + u64 *total_devs, u64 super_offset, unsigned sbflags); int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len); -int btrfs_bootstrap_super_map(struct btrfs_mapping_tree *map_tree, - struct btrfs_fs_devices *fs_devices); 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, struct btrfs_chunk *chunk, int item_size); int btrfs_chunk_readonly(struct btrfs_root *root, 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, + 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_root *root, + struct extent_buffer *leaf, + struct btrfs_chunk *chunk, + int slot, u64 logical); #endif