3.4-stable review patch. If anyone has any objections, please let me know.
------------------ From: Alex Elder <[email protected]> If a read-only rbd device is opened for writing in rbd_open(), it returns without dropping the just-acquired device reference. Fix this by moving the read-only check before getting the reference. Signed-off-by: Alex Elder <[email protected]> Reviewed-by: Yehuda Sadeh <[email protected]> Reviewed-by: Josh Durgin <[email protected]> (cherry picked from commit 340c7a2b2c9a2da640af28a8c196356484ac8b50) Signed-off-by: Greg Kroah-Hartman <[email protected]> --- drivers/block/rbd.c | 7 +++---- 1 file changed, 3 insertions(+), 4 deletions(-) --- a/drivers/block/rbd.c +++ b/drivers/block/rbd.c @@ -250,13 +250,12 @@ static int rbd_open(struct block_device { struct rbd_device *rbd_dev = bdev->bd_disk->private_data; - rbd_get_dev(rbd_dev); - - set_device_ro(bdev, rbd_dev->read_only); - if ((mode & FMODE_WRITE) && rbd_dev->read_only) return -EROFS; + rbd_get_dev(rbd_dev); + set_device_ro(bdev, rbd_dev->read_only); + return 0; } -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
