#5868 NORM Never A: NAND selftest erases JFFS2 cleanmarkers

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#5868: NAND selftest erases JFFS2 cleanmarkers
---------------------------------+------------------------------------------
 Reporter:  wmb at firmworks.com    |       Owner:  wmb at firmworks.com
     Type:  defect               |      Status:  new              
 Priority:  normal               |   Milestone:  Never Assigned   
Component:  ofw - open firmware  |     Version:                   
 Keywords:                       |    Verified:  0                
 Blocking:                       |   Blockedby:                   
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 OFW's NAND FLASH selftest is nondestructive in that it saves the previous
 data in blocks that it tests, and then restores the data after the test,
 but for blocks that were already erased prior to the test, it neglects to
 restore the cleanmarkers.  This results in a slight JFFS2 slowdown.

 One way to observe the problem is to use scan-nand (rocker-up), then test-
 all (rocker-left), then scan-nand again.  The second scan-nand will show
 some black squares (erased without cleanmarker) amid the blue field
 (erased with cleanmarkers).

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Ticket URL: <http://dev.laptop.org/ticket/5868>
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