XIP on mtdram
dwmw2 at infradead.org
Wed Jul 26 06:40:39 EDT 2000
Why can you use mtdram but not a normal ramdisk? The main advantage in that
would be if you could eliminate the block device code and save a few pages
of kernel code/data - but we haven't actually extracted it from the VM code
yet, so we can't do that yet.
We don't currently have XIP in place for JFFS. You'd have to make sure the
actual data in the nodes were page-aligned in the host memory, and remained
that way on GC. It's possible, but we've not looked at it yet.
Also, as flash is more expensive than RAM, it's cheaper to do compression,
which means you obviously can't do XIP.
If you really have to have XIP from a filesystem stored in RAM, look at
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