diff options
| author | Dmitry Torokhov <[email protected]> | 2012-03-19 17:02:01 -0700 |
|---|---|---|
| committer | Dmitry Torokhov <[email protected]> | 2012-03-19 17:02:01 -0700 |
| commit | 10ce3cc919f50c2043b41ca968b43c26a3672600 (patch) | |
| tree | ea409366a5208aced495bc0516a08b81fd43222e /drivers/md/dm-flakey.c | |
| parent | 24e3e5ae1e4c2a3a32f5b1f96b4e3fd721806acd (diff) | |
| parent | 5c6a7a62c130afef3d61c1dee153012231ff5cd9 (diff) | |
Merge branch 'next' into for-linus
Diffstat (limited to 'drivers/md/dm-flakey.c')
| -rw-r--r-- | drivers/md/dm-flakey.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/md/dm-flakey.c b/drivers/md/dm-flakey.c index f84c08029b21..9fb18c147825 100644 --- a/drivers/md/dm-flakey.c +++ b/drivers/md/dm-flakey.c @@ -368,8 +368,17 @@ static int flakey_status(struct dm_target *ti, status_type_t type, static int flakey_ioctl(struct dm_target *ti, unsigned int cmd, unsigned long arg) { struct flakey_c *fc = ti->private; + struct dm_dev *dev = fc->dev; + int r = 0; - return __blkdev_driver_ioctl(fc->dev->bdev, fc->dev->mode, cmd, arg); + /* + * Only pass ioctls through if the device sizes match exactly. + */ + if (fc->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 flakey_merge(struct dm_target *ti, struct bvec_merge_data *bvm, |