Err, upon further inspection, I think that this was a false positive. Btrfs relies on the initial value of the private_data member of a file being NULL in the regular ioctl operation handler for BTRFS_IOC_TRANS_START but it does not use the miscdevice framework for those files.
It *does* use the miscdevice framework in the ioctl operation handler of the /dev/btrfs-control file but there it does not use the file's private_data member. So IMHO, the proposed patch is not necessary... -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
