diff options
Diffstat (limited to 'drivers/md/dm-linear.c')
| -rw-r--r-- | drivers/md/dm-linear.c | 23 |
1 files changed, 5 insertions, 18 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 53e848c10..436f5c9b6 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -30,6 +30,7 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv) struct linear_c *lc; unsigned long long tmp; char dummy; + int ret; if (argc != 2) { ti->error = "Invalid argument count"; @@ -42,13 +43,15 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv) return -ENOMEM; } + ret = -EINVAL; if (sscanf(argv[1], "%llu%c", &tmp, &dummy) != 1) { ti->error = "dm-linear: Invalid device sector"; goto bad; } lc->start = tmp; - if (dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &lc->dev)) { + ret = dm_get_device(ti, argv[0], dm_table_get_mode(ti->table), &lc->dev); + if (ret) { ti->error = "dm-linear: Device lookup failed"; goto bad; } @@ -61,7 +64,7 @@ static int linear_ctr(struct dm_target *ti, unsigned int argc, char **argv) bad: kfree(lc); - return -EINVAL; + return ret; } static void linear_dtr(struct dm_target *ti) @@ -130,21 +133,6 @@ static int linear_ioctl(struct dm_target *ti, unsigned int cmd, return r ? : __blkdev_driver_ioctl(dev->bdev, dev->mode, cmd, arg); } -static int linear_merge(struct dm_target *ti, struct bvec_merge_data *bvm, - struct bio_vec *biovec, int max_size) -{ - struct linear_c *lc = ti->private; - struct request_queue *q = bdev_get_queue(lc->dev->bdev); - - if (!q->merge_bvec_fn) - return max_size; - - bvm->bi_bdev = lc->dev->bdev; - bvm->bi_sector = linear_map_sector(ti, bvm->bi_sector); - - return min(max_size, q->merge_bvec_fn(q, bvm, biovec)); -} - static int linear_iterate_devices(struct dm_target *ti, iterate_devices_callout_fn fn, void *data) { @@ -162,7 +150,6 @@ static struct target_type linear_target = { .map = linear_map, .status = linear_status, .ioctl = linear_ioctl, - .merge = linear_merge, .iterate_devices = linear_iterate_devices, }; |