[PATCH] mm/slab: rename CONFIG_SLAB to CONFIG_SLAB_DEPRECATED

[Vlastimil Babka]

On 5/23/23 11:22, Geert Uytterhoeven wrote:
> Hi Vlastimil,
> 
> Thanks for your patch!
> 
> On Tue, May 23, 2023 at 11:12 AM Vlastimil Babka <vbabka at suse.cz> wrote:
>> As discussed at LSF/MM [1] [2] and with no objections raised there,
>> deprecate the SLAB allocator. Rename the user-visible option so that
>> users with CONFIG_SLAB=y get a new prompt with explanation during make
>> oldconfig, while make olddefconfig will just switch to SLUB.
>>
>> In all defconfigs with CONFIG_SLAB=y remove the line so those also
>> switch to SLUB. Regressions due to the switch should be reported to
>> linux-mm and slab maintainers.
> 
> Technically, removing these lines from the defconfig files does not
> have any impact, right?

Well, it doesn't, but I thought it's at least a useful heads-up for the
maintainers in case some have specific reasons for keeping SLAB there.

> And it removes one more sync point indicating the last time some
> defconfig files were (not) updated by their maintainers ;-)

Sure, I can exclude yours (and anyone else who'd prefer that), the ack on
the deprecation itself is sufficient.

>> [1] https://lore.kernel.org/all/4b9fc9c6-b48c-198f-5f80-811a44737e5f@suse.cz/
>> [2] https://lwn.net/Articles/932201/
>>
>> Signed-off-by: Vlastimil Babka <vbabka at suse.cz>
> 
>>  arch/m68k/configs/amiga_defconfig               |  1 -
>>  arch/m68k/configs/apollo_defconfig              |  1 -
>>  arch/m68k/configs/atari_defconfig               |  1 -
>>  arch/m68k/configs/bvme6000_defconfig            |  1 -
>>  arch/m68k/configs/hp300_defconfig               |  1 -
>>  arch/m68k/configs/mac_defconfig                 |  1 -
>>  arch/m68k/configs/multi_defconfig               |  1 -
>>  arch/m68k/configs/mvme147_defconfig             |  1 -
>>  arch/m68k/configs/mvme16x_defconfig             |  1 -
>>  arch/m68k/configs/q40_defconfig                 |  1 -
>>  arch/m68k/configs/sun3_defconfig                |  1 -
>>  arch/m68k/configs/sun3x_defconfig               |  1 -
> 
> Regardless,
> Acked-by: Geert Uytterhoeven <geert at linux-m68k.org>

Thanks!

> Gr{oetje,eeting}s,
> 
>                         Geert
>