Re: [PATCH v4 5/6] alloc_tag: introduce pgtag_ref_handle to abstract page tag references

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Subject: Re: [PATCH v4 5/6] alloc_tag: introduce pgtag_ref_handle to abstract page tag references
From: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>
Date: Wed, 23 Oct 2024 13:35:24 -0400
Cc: akpm@xxxxxxxxxxxxxxxxxxxx, kent.overstreet@xxxxxxxxx, corbet@xxxxxxx, arnd@xxxxxxxx, mcgrof@xxxxxxxxxx, rppt@xxxxxxxxxx, paulmck@xxxxxxxxxx, thuth@xxxxxxxxxx, tglx@xxxxxxxxxxxxx, bp@xxxxxxxxx, xiongwei.song@xxxxxxxxxxxxx, ardb@xxxxxxxxxx, david@xxxxxxxxxx, vbabka@xxxxxxx, mhocko@xxxxxxxx, hannes@xxxxxxxxxxx, roman.gushchin@xxxxxxxxx, dave@xxxxxxxxxxxx, willy@xxxxxxxxxxxxx, liam.howlett@xxxxxxxxxx, souravpanda@xxxxxxxxxx, keescook@xxxxxxxxxxxx, dennis@xxxxxxxxxx, jhubbard@xxxxxxxxxx, urezki@xxxxxxxxx, hch@xxxxxxxxxxxxx, petr.pavlu@xxxxxxxx, samitolvanen@xxxxxxxxxx, da.gomez@xxxxxxxxxxx, yuzhao@xxxxxxxxxx, vvvvvv@xxxxxxxxxx, rostedt@xxxxxxxxxxx, iamjoonsoo.kim@xxxxxxx, rientjes@xxxxxxxxxx, minchan@xxxxxxxxxx, kaleshsingh@xxxxxxxxxx, linux-doc@xxxxxxxxxxxxxxx, linux-kernel@xxxxxxxxxxxxxxx, linux-arch@xxxxxxxxxxxxxxx, linux-mm@xxxxxxxxx, maple-tree@xxxxxxxxxxxxxxxxxxx, linux-modules@xxxxxxxxxxxxxxx, kernel-team@xxxxxxxxxxx
In-reply-to: <20241023170759.999909-6-surenb@google.com>
References: <20241023170759.999909-1-surenb@google.com> <20241023170759.999909-6-surenb@google.com>

On Wed, Oct 23, 2024 at 1:08 PM Suren Baghdasaryan <surenb@xxxxxxxxxx> wrote:
>
> To simplify later changes to page tag references, introduce new
> pgtag_ref_handle type. This allows easy replacement of page_ext
> as a storage of page allocation tags.
>
> Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>

Reviewed-by: Pasha Tatashin <pasha.tatashin@xxxxxxxxxx>

References:
- [PATCH v4 0/6] page allocation tag compression
  - From: Suren Baghdasaryan
- [PATCH v4 5/6] alloc_tag: introduce pgtag_ref_handle to abstract page tag references
  - From: Suren Baghdasaryan

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