Hi!

From: Barry Song <redacted>

Current swsusp requires swap partitions even larger than real saved pages
due to the worst compress ratio:
but for an embedded system, which has limited storage space, then it might
can't give the big size partition to save snapshot.
In the another way, some embedded systems can definitely know the most size
needed for snapshot since they run some specific application lists.
So this patch provides the possibility for bootloader to tell kernel even
the system has a little snapshot partition, but it is still enough.
For example, if the system need to save 120MB memory, origin swsusp will require
a 130MB partition to save snapshot. but if users know 30MB is enough for them(
compressed image will be less than 30MB), they just make a 30MB
partition.

Would it be better to have /sys/power/... entry which would allow
configuring expected compression ratio at runtime?
								Pavel

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