#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;
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) + \
#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
* 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,
- u64 num_bytes, u64 type);
-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);
+ struct btrfs_fs_info *fs_info, u64 *start,
+ u64 num_bytes, u64 type, int convert);
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, int super_recover);
-int btrfs_num_copies(struct btrfs_mapping_tree *map_tree, u64 logical, u64 len);
+ u64 *total_devs, u64 super_offset, unsigned sbflags);
+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