Messages in this thread | | | Date | Fri, 01 Jun 2012 10:00:14 +0200 | From | Richard Weinberger <> | Subject | Re: [PATCH] [RFC] UBI: Implement Fastmap support |
| |
Am 01.06.2012 07:47, schrieb Adrian Hunter: > It looks like, if you lose power at this point, the old fastmap may have > been erased but the new fastmap has not been written. That would mean > you lose the fastmap. Is that correct? I guess you need to write the > new fastmap first and then erase the old one.
True. But why is this a problem? If we can recovers using a full scan after a power cut we are fine. By deleting the old fastmap after writing the new one we may run out of free PEBs. E.g: Assume a fastmap needs 4 PEBs and we have only 2 PEBs available the current approach works fine because after returning and deleting the old fastmap we have 6 PEBs available and can write the new one.
Thanks, //richard
[unhandled content-type:application/pgp-signature] | |