Messages in this thread | | | Date | Mon, 24 Oct 2022 13:59:09 -0700 | From | Andrew Morton <> | Subject | Re: [PATCH v1] zram: add size class equals check into recompression |
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On Mon, 24 Oct 2022 15:09:42 +0300 Alexey Romanov <avromanov@sberdevices.ru> wrote:
> It makes no sense for us to recompress the object if it will > be in the same size class. We anyway don't get any memory gain. > But, at the same time, we get a CPU time overhead when inserting > this object into zspage and decompressing it afterwards. >
Dumb question: is it ever possible for compression to result in an increase in size?
> + class_size_next == class_size_prev ||
IOW, could this be >=?
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