47 			  struct dm_target *ti)  in parse_features()  argument
64 	r = dm_read_arg_group(_args, as, &argc, &ti->error);  in parse_features()
77 				ti->error = "Feature drop_writes duplicated";  in parse_features()
89 				ti->error = "Feature corrupt_bio_byte requires parameters";  in parse_features()
93 			r = dm_read_arg(_args + 1, as, &fc->corrupt_bio_byte, &ti->error);  in parse_features()
107 				ti->error = "Invalid corrupt bio direction (r or w)";  in parse_features()
115 			r = dm_read_arg(_args + 2, as, &fc->corrupt_bio_value, &ti->error);  in parse_features()
123 			r = dm_read_arg(_args + 3, as, &fc->corrupt_bio_flags, &ti->error);  in parse_features()
131 		ti->error = "Unrecognised flakey feature requested";  in parse_features()
136 		ti->error = "drop_writes is incompatible with corrupt_bio_byte with the WRITE flag set";  in parse_features()
155 static int flakey_ctr(struct dm_target *ti, unsigned int argc, char **argv)  in flakey_ctr()  argument
173 		ti->error = "Invalid argument count";  in flakey_ctr()
179 		ti->error = "Cannot allocate context";  in flakey_ctr()
187 		ti->error = "Invalid device sector";  in flakey_ctr()
192 	r = dm_read_arg(_args, &as, &fc->up_interval, &ti->error);  in flakey_ctr()
196 	r = dm_read_arg(_args, &as, &fc->down_interval, &ti->error);  in flakey_ctr()
201 		ti->error = "Total (up + down) interval is zero";  in flakey_ctr()
206 		ti->error = "Interval overflow";  in flakey_ctr()
210 	r = parse_features(&as, fc, ti);  in flakey_ctr()
214 	if (dm_get_device(ti, devname, dm_table_get_mode(ti->table), &fc->dev)) {  in flakey_ctr()
215 		ti->error = "Device lookup failed";  in flakey_ctr()
219 	ti->num_flush_bios = 1;  in flakey_ctr()
220 	ti->num_discard_bios = 1;  in flakey_ctr()
221 	ti->per_bio_data_size = sizeof(struct per_bio_data);  in flakey_ctr()
222 	ti->private = fc;  in flakey_ctr()
230 static void flakey_dtr(struct dm_target *ti)  in flakey_dtr()  argument
232 	struct flakey_c *fc = ti->private;  in flakey_dtr()
234 	dm_put_device(ti, fc->dev);  in flakey_dtr()
238 static sector_t flakey_map_sector(struct dm_target *ti, sector_t bi_sector)  in flakey_map_sector()  argument
240 	struct flakey_c *fc = ti->private;  in flakey_map_sector()
242 	return fc->start + dm_target_offset(ti, bi_sector);  in flakey_map_sector()
245 static void flakey_map_bio(struct dm_target *ti, struct bio *bio)  in flakey_map_bio()  argument
247 	struct flakey_c *fc = ti->private;  in flakey_map_bio()
252 			flakey_map_sector(ti, bio->bi_iter.bi_sector);  in flakey_map_bio()
274 static int flakey_map(struct dm_target *ti, struct bio *bio)  in flakey_map()  argument
276 	struct flakey_c *fc = ti->private;  in flakey_map()
319 	flakey_map_bio(ti, bio);  in flakey_map()
324 static int flakey_end_io(struct dm_target *ti, struct bio *bio, int error)  in flakey_end_io()  argument
326 	struct flakey_c *fc = ti->private;  in flakey_end_io()
341 static void flakey_status(struct dm_target *ti, status_type_t type,  in flakey_status()  argument
345 	struct flakey_c *fc = ti->private;  in flakey_status()
374 static int flakey_ioctl(struct dm_target *ti, unsigned int cmd, unsigned long arg)  in flakey_ioctl()  argument
376 	struct flakey_c *fc = ti->private;  in flakey_ioctl()
384 	    ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT)  in flakey_ioctl()
390 static int flakey_merge(struct dm_target *ti, struct bvec_merge_data *bvm,  in flakey_merge()  argument
393 	struct flakey_c *fc = ti->private;  in flakey_merge()
400 	bvm->bi_sector = flakey_map_sector(ti, bvm->bi_sector);  in flakey_merge()
405 static int flakey_iterate_devices(struct dm_target *ti, iterate_devices_callout_fn fn, void *data)  in flakey_iterate_devices()  argument
407 	struct flakey_c *fc = ti->private;  in flakey_iterate_devices()
409 	return fn(ti, fc->dev, fc->start, ti->len, data);  in flakey_iterate_devices()