From: Johannes Weiner <hannes@cmpxchg.org>
To: Brendan Jackman <jackmanb@google.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
"Liam R. Howlett" <Liam.Howlett@oracle.com>,
Vlastimil Babka <vbabka@suse.cz>, Mike Rapoport <rppt@kernel.org>,
Suren Baghdasaryan <surenb@google.com>,
Michal Hocko <mhocko@suse.com>, Zi Yan <ziy@nvidia.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH] mm: Remove is_migrate_highatomic()
Date: Thu, 21 Aug 2025 12:32:46 -0400 [thread overview]
Message-ID: <20250821163246.GA133370@cmpxchg.org> (raw)
In-Reply-To: <20250821-is-migrate-highatomic-v1-1-ddb6e5d7c566@google.com>
On Thu, Aug 21, 2025 at 01:29:47PM +0000, Brendan Jackman wrote:
> There are 3 potential reasons for is_migrate_*() helpers:
>
> 1. They represent higher-level attributes of migratetypes, like
> is_migrate_movable()
>
> 2. They are ifdef'd, like is_migrate_isolate().
>
> 3. For consistency with an is_migrate_*_page() helper, also like
> is_migrate_isolate().
>
> It looks like is_migrate_highatomic() was for case 3, but that was
> removed in commit e0932b6c1f94 ("mm: page_alloc: consolidate free page
> accounting").
>
> So remove the indirection and go back to a simple comparison.
>
> Signed-off-by: Brendan Jackman <jackmanb@google.com>
Oops! Thanks.
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
next prev parent reply other threads:[~2025-08-21 16:32 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-21 13:29 [PATCH] mm: Remove is_migrate_highatomic() Brendan Jackman
2025-08-21 14:04 ` Zi Yan
2025-08-21 14:05 ` David Hildenbrand
2025-08-21 16:32 ` Johannes Weiner [this message]
2025-08-21 16:38 ` Lorenzo Stoakes
2025-08-22 18:09 ` SeongJae Park
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