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From: Dev Jain <dev.jain@arm.com>
To: Barry Song <21cnbao@gmail.com>, linux-mm@kvack.org
Cc: akpm@linux-foundation.org, linux-kernel@vger.kernel.org,
	Barry Song <v-songbaohua@oppo.com>,
	Anshuman Khandual <anshuman.khandual@arm.com>,
	Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
	David Hildenbrand <david@redhat.com>,
	Oscar Salvador <osalvador@suse.de>,
	"Liam R. Howlett" <Liam.Howlett@oracle.com>,
	Vlastimil Babka <vbabka@suse.cz>, Jann Horn <jannh@google.com>,
	Suren Baghdasaryan <surenb@google.com>,
	Lokesh Gidra <lokeshgidra@google.com>,
	Tangquan Zheng <zhengtangquan@oppo.com>
Subject: Re: [PATCH v2] mm: madvise: use walk_page_range_vma() instead of walk_page_range()
Date: Thu, 5 Jun 2025 14:50:03 +0530	[thread overview]
Message-ID: <ad23ddf4-062a-4eed-8692-3e6fe057a7f9@arm.com> (raw)
In-Reply-To: <20250605083144.43046-1-21cnbao@gmail.com>


On 05/06/25 2:01 pm, Barry Song wrote:
> From: Barry Song <v-songbaohua@oppo.com>
>
> We've already found the VMA within madvise_walk_vmas() before calling
> specific madvise behavior functions like madvise_free_single_vma().
> So calling walk_page_range() and doing find_vma() again seems
> unnecessary. It also prevents potential optimizations in those madvise
> callbacks, particularly the use of dedicated per-VMA locking.
>
> Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
> Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
> Acked-by: David Hildenbrand <david@redhat.com>
> Reviewed-by: Oscar Salvador <osalvador@suse.de>
> Cc: "Liam R. Howlett" <Liam.Howlett@oracle.com>
> Cc: Vlastimil Babka <vbabka@suse.cz>
> Cc: Jann Horn <jannh@google.com>
> Cc: Suren Baghdasaryan <surenb@google.com>
> Cc: Lokesh Gidra <lokeshgidra@google.com>
> Cc: Dev Jain <dev.jain@arm.com>
> Cc: Tangquan Zheng <zhengtangquan@oppo.com>
> Signed-off-by: Barry Song <v-songbaohua@oppo.com>
> ---


Reviewed-by: Dev Jain <dev.jain@arm.com>



  parent reply	other threads:[~2025-06-05  9:21 UTC|newest]

Thread overview: 10+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-06-05  8:31 Barry Song
2025-06-05  9:14 ` Harry Yoo
2025-06-05  9:20 ` Dev Jain [this message]
2025-06-05 14:12 ` Vlastimil Babka
2025-06-05 14:20   ` Lorenzo Stoakes
2025-06-09  9:52 ` Ryan Roberts
2025-06-09 10:22   ` Lorenzo Stoakes
2025-06-09 10:55     ` Barry Song
2025-06-09 11:04       ` Ryan Roberts
2025-06-09 11:12       ` Lorenzo Stoakes

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