On Mon, 2009-11-30 at 13:51 +0000, Alan Cox wrote: > > Before we do suspend, pick few random sectors from the media, run that > > through some hash function, thus creating some sort of watermark. > > Statistically speaking the chances are you'll catch zero sectors and > lose. You'll also not detect the suspend, move to other box, use, put > back error. That is one users make and we need to be at least vaguely > robust against. > > Hence you need the fs checking here. > > Alan I have to agree with you about that one. An FS checking is really only solution. Then I think such check can be added gradually to existing filesystems (starting with fat), and allow these filesystems to persist across low power states regardsless of CONFIG_$system_UNSAFE_RESUME For fat, simple checksum of the 'fat' table will catch most attempts. Also directory modification times can be compared, at least for root directory. Best regards, Maxim Levitsky -- To unsubscribe from this list: send the line "unsubscribe linux-mmc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
