Re: [PATCH 08/14] zram: check that backends array has at least one backend

[Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>]

On (24/05/04 14:54), kernel test robot wrote:
>          |                            ~~~~~~~~~~~~~~~~~~~~~~
> >> drivers/block/zram/zcomp.c:214:2: error: call to '__compiletime_assert_285' declared with 'error' attribute: BUILD_BUG_ON failed: ARRAY_SIZE(backends) <= 1
>      214 |         BUILD_BUG_ON(ARRAY_SIZE(backends) <= 1);
>          |         ^

So this is what that BUILD_BUG_ON() is supposed to catch. You don't
have any backends selected in your .config:

# CONFIG_ZRAM_BACKEND_LZO is not set
# CONFIG_ZRAM_BACKEND_LZ4 is not set
# CONFIG_ZRAM_BACKEND_LZ4HC is not set
# CONFIG_ZRAM_BACKEND_ZSTD is not set
# CONFIG_ZRAM_BACKEND_DEFLATE is not set
CONFIG_ZRAM_DEF_COMP="unset-value"

Which is invalid configuration because it means that zram has no
compression enabled.