On 05/22/2012 08:43 PM, Minchan Kim wrote:

zram's handle variable can store handle of zsmalloc in case of
compressing efficiently. Otherwise, it stores point of page descriptor.
This patch clean up the mess by union struct.

changelog
  * from v1
	- none(new add in v2)

Cc: Nitin Gupta <redacted>
Cc: Seth Jennings <redacted>
Signed-off-by: Minchan Kim <minchan@kernel.org>

Not sure if the BUILD_BUG is completely needed since it's pretty well
assumed that sizeof(unsigned long) == sizeof(void *) but it does provide
some safety is someone tries to change the type of handle.

Acked-by: <redacted>

Thanks,
Seth

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