Re: [PATCH 0/3] [v2] Repair and clean up vm.zone_reclaim_mode sysctl ABI

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On 20-07-01 08:26:21, Dave Hansen wrote:
> A previous cleanup accidentally changed the vm.zone_reclaim_mode ABI.
> 
> This series restores the ABI and then reorganizes the code to make
> the ABI more obvious.  Since the single-patch v1[1], I've:
> 
>  * Restored the RECLAIM_ZONE naming, comment and Documentation now
>    that the implicit checks for it are known.
>  * Move RECLAIM_* definitions to a uapi header
>  * Add a node_reclaim_enabled() helper
> 
>  Documentation/admin-guide/sysctl/vm.rst |   10 +++++-----
>  include/linux/swap.h                    |    7 +++++++
>  include/uapi/linux/mempolicy.h          |    7 +++++++
>  mm/khugepaged.c                         |    2 +-
>  mm/page_alloc.c                         |    2 +-
>  mm/vmscan.c                             |    3 ---
>  6 files changed, 21 insertions(+), 10 deletions(-)
> 
> 1. https://lore.kernel.org/linux-mm/20200626003459.D8E015CA@xxxxxxxxxxxxxxxxxx/
> 
> Cc: Ben Widawsky <ben.widawsky@xxxxxxxxx>
> Cc: Alex Shi <alex.shi@xxxxxxxxxxxxxxxxx>
> Cc: Daniel Wagner <dwagner@xxxxxxx>
> Cc: "Tobin C. Harding" <tobin@xxxxxxxxxx>
> Cc: Christoph Lameter <cl@xxxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Cc: Huang Ying <ying.huang@xxxxxxxxx>
> Cc: Dan Williams <dan.j.williams@xxxxxxxxx>
> Cc: Qian Cai <cai@xxxxxx>
> Cc: Daniel Wagner <dwagner@xxxxxxx>

Series is:
Reviewed-by: Ben Widawsky <ben.widawsky@xxxxxxxxx>

I was more thorough this time in checking all uses of node_reclaim_mode :-). I
do think in patch 2/3, using an enum would be a little better, which I've
mentioned there.




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