[PATCH] ARM:mm: fix kmap_atomic_to_page
neidhard.kim at lge.com
Mon Oct 12 19:06:44 PDT 2015
On 10/12/2015 06:27 PM, Arnd Bergmann wrote:
> How about changing the zcomp code to pass the page pointer instead of the kernel space pointer? That would avoid having to do the kmap_atomic, which can itself be expensive on 32-bit machines and should not be needed here if you have a HW DMA engine doing the compression. Arnd
Mainline zram uses lzo / lz4 library functions as backend. Using kmap_atomic and passing address look reasonable.
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