By the commit 75f1dc0 2010-11-13 block: check bdev_read_only() from blkdev_get() bdev_read_only() call is added into blkdev_get(). This check makes the loopback block device unable to be mounted as writable once it is set to readonly, even if the corresponding is detached and the device becomes free. We may need to re-initialize the readonly/writable status flag somewhere? # simple tests with loopback # mount as writable, succeed + sudo mount -o loop ./ext2.img /mnt + sudo umount /mnt # mount as readonly, succeed + sudo mount -o ro,loop ./ext2.img /mnt + sudo umount /mnt # mount as writable again, fail + sudo mount -o loop ./ext2.img /mnt /dev/loop0: Permission denied Now /dev/loop0 is fixed as readonly. J. R. Okajima -- To unsubscribe from this list: send the line "unsubscribe linux-usb" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
