diff options
| author | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-03-05 19:32:58 +0200 |
|---|---|---|
| committer | Kalle Valo <kvalo@qca.qualcomm.com> | 2012-03-05 19:32:58 +0200 |
| commit | 05e5bd0f3daddb0368a433af5b58be68c62dc365 (patch) | |
| tree | a54c90523b72fb6e61b7bfe01fb8917e16825781 /drivers/md/dm-linear.c | |
| parent | daa16bc52ad8e9513506fca29a038a1460e63638 (diff) | |
| parent | c288ec614e264b46853c65d3db9ccf91d53c9484 (diff) | |
Merge remote branch 'wireless-next/master' into ath6kl-next
Conflicts:
drivers/net/wireless/ath/ath6kl/cfg80211.c
Diffstat (limited to 'drivers/md/dm-linear.c')
| -rw-r--r-- | drivers/md/dm-linear.c | 12 |
1 files changed, 11 insertions, 1 deletions
diff --git a/drivers/md/dm-linear.c b/drivers/md/dm-linear.c index 3921e3bb43c1..9728839f844a 100644 --- a/drivers/md/dm-linear.c +++ b/drivers/md/dm-linear.c @@ -116,7 +116,17 @@ static int linear_ioctl(struct dm_target *ti, unsigned int cmd, unsigned long arg) { struct linear_c *lc = (struct linear_c *) ti->private; - return __blkdev_driver_ioctl(lc->dev->bdev, lc->dev->mode, cmd, arg); + struct dm_dev *dev = lc->dev; + int r = 0; + + /* + * Only pass ioctls through if the device sizes match exactly. + */ + if (lc->start || + ti->len != i_size_read(dev->bdev->bd_inode) >> SECTOR_SHIFT) + r = scsi_verify_blk_ioctl(NULL, 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, |