lkml.org 
[lkml]   [2012]   [Mar]   [8]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [RFC][PATCH 0/7] UBI checkpointing support
    On Wed, 07 Mar 2012 22:19:00 +0100 Richard Weinberger <rw@linutronix.de> wrote:
    > >> All these operations scan a limited number of erase blocks which makes
    > >> the UBI init O(1) and independent of the device size.
    > >
    > > Well, is it really true? The larger is the flash the more you read and
    > > process anyway, and it is still linear, but the multiplier becomes very
    > > small, so this is a huge improvement.
    >
    > Yes. :)
    >
    > Using checkpointing UBI only has to scan a fixed (independent of the
    > flash size!) number of blocks.

    But doesn't the CP data (sorry, UBIUBI data :) need to have one
    'struct ubi_cp_ec' descriptor for each used/free PEB, and as such the
    maximum number of 'ubi_cp_ec' descriptors is total device PEBs, meaning
    CP data is still linearly scaled to device size (with a very small
    multiplier)?

    Regards,
    Shmulik


    \
     
     \ /
      Last update: 2012-03-08 08:11    [W:0.022 / U:0.332 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site