166 static int next_repair_mirror(struct btrfs_failed_bio *fbio, int cur_mirror)  in next_repair_mirror()  argument
168 	if (cur_mirror == fbio->num_copies)  in next_repair_mirror()
169 		return cur_mirror + 1 - fbio->num_copies;  in next_repair_mirror()
173 static int prev_repair_mirror(struct btrfs_failed_bio *fbio, int cur_mirror)  in prev_repair_mirror()  argument
176 		return fbio->num_copies;  in prev_repair_mirror()
180 static void btrfs_repair_done(struct btrfs_failed_bio *fbio)  in btrfs_repair_done()  argument
182 	if (atomic_dec_and_test(&fbio->repair_count)) {  in btrfs_repair_done()
183 		btrfs_orig_bbio_end_io(fbio->bbio);  in btrfs_repair_done()
184 		mempool_free(fbio, &btrfs_failed_bio_pool);  in btrfs_repair_done()
191 	struct btrfs_failed_bio *fbio = repair_bbio->private;  in btrfs_end_repair_bio()  local
208 		mirror = next_repair_mirror(fbio, mirror);  in btrfs_end_repair_bio()
209 		if (mirror == fbio->bbio->mirror_num) {  in btrfs_end_repair_bio()
211 			fbio->bbio->bio.bi_status = BLK_STS_IOERR;  in btrfs_end_repair_bio()
220 		mirror = prev_repair_mirror(fbio, mirror);  in btrfs_end_repair_bio()
225 	} while (mirror != fbio->bbio->mirror_num);  in btrfs_end_repair_bio()
228 	btrfs_repair_done(fbio);  in btrfs_end_repair_bio()
242 						  struct btrfs_failed_bio *fbio)  in repair_one_sector()  argument
260 		return fbio;  in repair_one_sector()
263 	if (!fbio) {  in repair_one_sector()
264 		fbio = mempool_alloc(&btrfs_failed_bio_pool, GFP_NOFS);  in repair_one_sector()
265 		fbio->bbio = failed_bbio;  in repair_one_sector()
266 		fbio->num_copies = num_copies;  in repair_one_sector()
267 		atomic_set(&fbio->repair_count, 1);  in repair_one_sector()
270 	atomic_inc(&fbio->repair_count);  in repair_one_sector()
278 	btrfs_bio_init(repair_bbio, fs_info, NULL, fbio);  in repair_one_sector()
282 	mirror = next_repair_mirror(fbio, failed_bbio->mirror_num);  in repair_one_sector()
285 	return fbio;  in repair_one_sector()
295 	struct btrfs_failed_bio *fbio = NULL;  in btrfs_check_read_bio()  local
318 			fbio = repair_one_sector(bbio, offset, &bv, fbio);  in btrfs_check_read_bio()
327 	if (fbio)  in btrfs_check_read_bio()
328 		btrfs_repair_done(fbio);  in btrfs_check_read_bio()