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Some thoughts for next gen

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Peter Andersson
2015-04-19 21:01:47 +02:00
parent 88b5473bfe
commit e92d1db58e
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* When mending lost pages, also see if they fit into length specified in object index header * When mending lost pages, also see if they fit into length specified in object index header
SPIFFS2 thoughts
* Instead of exact object id:s in the object lookup tables, use a hash of span index and object id.
Eg. object id xor:ed with bit-reversed span index.
This should decrease number of actual pages that needs to be visited when looking thru the obj lut.
* Logical number of each block. When moving stuff in a garbage collected page, the free
page is assigned the same number as the garbage collected. Thus, object index pages do not have to
be rewritten.
* Steal one page, use as a bit parity page. When starting an fs modification operation, write one bit
as zero. When ending, write another bit as zero. On mount, if number of zeroes in page is uneven, a
check is automatically run.