[PATCH v2 12/29] mm/zsmalloc: stop using __ClearPageMovable()

[Sergey Senozhatsky]

On (25/07/04 12:25), David Hildenbrand wrote:
> Instead, let's check in the callbacks if the page was already destroyed,
> which can be checked by looking at zpdesc->zspage (see reset_zpdesc()).
> 
> If we detect that the page was destroyed:
> 
> (1) Fail isolation, just like the migration core would
> 
> (2) Fake migration success just like the migration core would
> 
> In the putback case there is nothing to do, as we don't do anything just
> like the migration core would do.
> 
> In the future, we should look into not letting these pages get destroyed
> while they are isolated -- and instead delaying that to the
> putback/migration call. Add a TODO for that.
> 
> Reviewed-by: Harry Yoo <harry.yoo at oracle.com>
> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes at oracle.com>
> Signed-off-by: David Hildenbrand <david at redhat.com>

Reviewed-by: Sergey Senozhatsky <senozhatsky at chromium.org>