#define BTRFS_BIO_ORIG_BIO_SUBMITTED (1 << 0)
struct btrfs_bio {
+ atomic_t refs;
atomic_t stripes_pending;
struct btrfs_fs_info *fs_info;
+ u64 map_type; /* get from map_lookup->type */
bio_end_io_t *end_io;
struct bio *orig_bio;
unsigned long flags;
int mirror_num;
int num_tgtdevs;
int *tgtdev_map;
+ /*
+ * logical block numbers for the start of each stripe
+ * The last one or two are p/q. These are sorted,
+ * so raid_map[0] is the start of our full stripe
+ */
+ u64 *raid_map;
struct btrfs_bio_stripe stripes[];
};
int btrfs_account_dev_extents_size(struct btrfs_device *device, u64 start,
u64 end, u64 *length);
-
-#define btrfs_bio_size(total_stripes, real_stripes) \
- (sizeof(struct btrfs_bio) + \
- (sizeof(struct btrfs_bio_stripe) * (total_stripes)) + \
- (sizeof(int) * (real_stripes)))
-
+void btrfs_get_bbio(struct btrfs_bio *bbio);
+void btrfs_put_bbio(struct btrfs_bio *bbio);
int btrfs_map_block(struct btrfs_fs_info *fs_info, int rw,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num);
int btrfs_map_sblock(struct btrfs_fs_info *fs_info, int rw,
u64 logical, u64 *length,
struct btrfs_bio **bbio_ret, int mirror_num,
- u64 **raid_map_ret);
+ int need_raid_map);
int btrfs_rmap_block(struct btrfs_mapping_tree *map_tree,
u64 chunk_start, u64 physical, u64 devid,
u64 **logical, int *naddrs, int *stripe_len);