struct btrfs_bio_stripe {
struct btrfs_device *dev;
u64 physical;
+ u64 length; /* only used for discard mappings */
};
struct btrfs_multi_bio {
u64 max_avail;
};
+struct map_lookup {
+ 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[];
+};
+
/* Used to sort the devices by max_avail(descending sort) */
int btrfs_cmp_device_free_bytes(const void *dev_info1, const void *dev_info2);