Re: [PATCH 1/2] mm/zsmalloc: fix class per-fullness zspage counts

[Chengming Zhou]

On 2024/7/1 10:20, Chengming Zhou wrote:
> On 2024/7/1 09:37, Sergey Senozhatsky wrote:
> > On (24/06/28 11:19), Chengming Zhou wrote:
> > > Andrew, could you please help to change the subject as Sergey asked?
> > > Sorry, I should have noted these details in the changelog when I wrote
> > > this subject.
> >
> > Chengming, can I ask you to resend these patches with a proper commit
> > message?
>
> Of course, will update and send later.

I just pulled mm/mm-unstable and ready to update, but find Andrew has 
already helped to change the subject and commit message as below, which
is great enough! Thanks!

commit 84d0abc5905bbdf29dc7ff8083d21145d78a3ffe
Author: Chengming Zhou <chengming.zhou@xxxxxxxxx>
Date:   Thu Jun 27 15:59:58 2024 +0800

    mm/zsmalloc: clarify class per-fullness zspage counts

    We always use insert_zspage() and remove_zspage() to update zspage's
    fullness location, which will account correctly.

    But this special async free path use "splice" instead of 
remove_zspage(),
    so the per-fullness zspage count for ZS_INUSE_RATIO_0 won't decrease.

    Clean things up by decreasing when iterate over the zspage free list.

    This doesn't actually fix anything.  ZS_INUSE_RATIO_0 is just a
    "placeholder" which is never used anywhere.

    Link: 
https://lkml.kernel.org/r/20240627075959.611783-1-chengming.zhou@xxxxxxxxx
    Signed-off-by: Chengming Zhou <chengming.zhou@xxxxxxxxx>
    Cc: Minchan Kim <minchan@xxxxxxxxxx>
    Cc: Sergey Senozhatsky <senozhatsky@xxxxxxxxxxxx>
    Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>