From: "Vishal Moola (Oracle)" <vishal.moola@gmail.com>
To: Wei Yang <richard.weiyang@gmail.com>
Cc: akpm@linux-foundation.org, vbabka@suse.cz, hannes@cmpxchg.org,
ziy@nvidia.com, linux-mm@kvack.org,
David Hildenbrand <david@redhat.com>
Subject: Re: [Patch v2] mm/page_alloc: find_large_buddy() from start_pfn aligned order
Date: Tue, 2 Sep 2025 09:25:46 -0700 [thread overview]
Message-ID: <aLcaiiWiz1jHb45y@fedora> (raw)
In-Reply-To: <20250902025807.11467-1-richard.weiyang@gmail.com>
On Tue, Sep 02, 2025 at 02:58:07AM +0000, Wei Yang wrote:
> We iterate pfn from order 0 to MAX_PAGE_ORDER aligned to find large buddy.
> While if the order is less than start_pfn aligned order, we would get the
> same pfn and do the same check again.
>
> Iterate from start_pfn aligned order to reduce duplicated work.
>
> Link: https://lkml.kernel.org/r/20250828091618.7869-1-richard.weiyang@gmail.com
> Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
> Cc: Johannes Weiner <hannes@cmpxchg.org>
> Cc: Zi Yan <ziy@nvidia.com>
> Cc: Vlastimil Babka <vbabka@suse.cz>
> Cc: David Hildenbrand <david@redhat.com>
> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
> Reviewed-by: Zi Yan <ziy@nvidia.com>
Reviewed-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
prev parent reply other threads:[~2025-09-02 16:25 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-02 2:58 [Patch v2] mm/page_alloc: find_large_buddy() from start_pfn aligned order Wei Yang
2025-09-02 8:04 ` Vlastimil Babka
2025-09-02 14:33 ` Johannes Weiner
2025-09-02 14:36 ` Zi Yan
2025-09-02 15:12 ` Johannes Weiner
2025-09-02 16:25 ` Vishal Moola (Oracle) [this message]
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