Messages in this thread | | | Date | Sun, 5 Aug 2012 11:23:37 +0300 | From | Shmulik Ladkani <> | Subject | Re: UBI fastmap updates |
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Hi,
On Thu, 2 Aug 2012 19:45:38 +0200 Richard Weinberger <richard@nod.at> wrote: > Okay, then let's explicitly reserve a few PEBs for fastmap. > This should be very easy task.
Need to consider what's expected when migrating from a former non-FM UBI system to an FM enabled system, in the case where all PEBs where consumed (reserved) in the former system.
> How much PEB should be reserved? 2 x sizeof(fastmap)?
Since FM does not use EBA's atomic LEB change when writing the new fastmap, but instead implements its own FM "leb change" internally - then reserving 2x is needed if we'd like to avoid reusing the same fastmap PEB.
Regards, Shmulik
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