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. -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
