How do you plan to handle I/O errors or ENOSPC conditions? Note that shared writeable mappings are by far the feature in the VM/FS code that is most error prone, including the impossiblity of doing sensible error handling. The version that accidentally used MAP_PRIVATE actually makes a lot of sense for an equivalent of qemu's snapshot mode where the image is readonly and changes are kept private as long as the amount of modified blocks is small enough to not kill the host VM, but using shared writeable mappings just sems dangerous. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
