>
> Hi, All
>
>
>
> Each time JFFS2 initialized, uboot need to scan the whole flash. This is
> fairly time consuming.
>
>
>
> So EBS(erase block summary) is used to JFFS2 to reduce mounting time. And I
> believe this can also be used to UBOOT to reduce booting time.
>
>
>
> Does UBOOT support this feature? or does any other solution in uboot to
> reduce JFFS2 scaning time?
Don't think EBS is going to buy you much. The main problem is that the
scanning of JFFS2 in u-boot is inefficient. u-boot could take a
hint from the kernel impl. of JFFS2 to reduce scanning. The biggest
ones are:
- do no scan the whole EB when it is empty.
- impl. a better crc32(use the one from linux)
- Don't scan more than you have to, that is, ls/read /some/file
should only scan and keep records to do the ls/read of that
particular file.
There were some patches floating around quite some time ago to improve
scanning but I don't think they made it into the u-boot repo.
Jocke
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