From: "David Hildenbrand (Arm)" <david@kernel.org>
To: Suren Baghdasaryan <surenb@google.com>, akpm@linux-foundation.org
Cc: liam@infradead.org, ljs@kernel.org, vbabka@kernel.org,
willy@infradead.org, jannh@google.com, paulmck@kernel.org,
pfalcato@suse.de, xueyuan.chen21@gmail.com, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org
Subject: Re: [PATCH v4 4/7] proc/task_mmu: remove special-casing of smap_gather_stats() start parameter
Date: Mon, 14 Sep 2026 12:38:29 +0200 [thread overview]
Message-ID: <cdffaae3-dc7e-4307-984a-8fbb55beb931@kernel.org> (raw)
In-Reply-To: <20260911194145.1781926-5-surenb@google.com>
On 9/11/26 21:41, Suren Baghdasaryan wrote:
> smap_gather_stats() interprets its start parameter to mean vma->vm_start
> when it's set to 0. Eliminate this special interpretation and provide two
> separate functions for a partial and complete VMA walk.
>
> Since smap_gather_stats() operates within a single VMA, we can replace
> walk_page_vma()/walk_page_range() calls with walk_page_range_vma()
> which is simpler and also can be called while holding per-VMA lock.
>
> No functional change intended.
>
> Suggested by: Lorenzo Stoakes <ljs@kernel.org>
> Signed-off-by: Suren Baghdasaryan <surenb@google.com>
> ---
Acked-by: David Hildenbrand (Arm) <david@kernel.org>
--
Cheers,
David
next prev parent reply other threads:[~2026-09-14 10:38 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-09-11 19:41 [PATCH v4 0/7] read proc/pid/smaps_rollup under per-vma lock Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 1/7] proc/task_mmu: remove unnecessary helpers Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 2/7] proc/task_mmu: remove unnecessary inlines in function definitions Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 3/7] proc/task_mmu: clarify shmem mapping walk conditions in smap_gather_stats() Suren Baghdasaryan
2026-09-11 19:44 ` Lorenzo Stoakes (ARM)
2026-09-11 21:00 ` David Hildenbrand (Arm)
2026-09-11 21:31 ` Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 4/7] proc/task_mmu: remove special-casing of smap_gather_stats() start parameter Suren Baghdasaryan
2026-09-11 19:45 ` Lorenzo Stoakes (ARM)
2026-09-11 19:47 ` Suren Baghdasaryan
2026-09-14 10:38 ` David Hildenbrand (Arm) [this message]
2026-09-11 19:41 ` [PATCH v4 5/7] proc/task_mmu: change proc_get_vma() to stop returning gate VMA at the end Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 6/7] proc/task_mmu: read proc/pid/smaps_rollup under per-vma lock Suren Baghdasaryan
2026-09-11 19:41 ` [PATCH v4 7/7] selftests/proc: add /proc/pid/smaps_rollup tearing tests Suren Baghdasaryan
2026-09-12 7:24 ` [PATCH v4 0/7] read proc/pid/smaps_rollup under per-vma lock Andrew Morton
2026-09-12 18:55 ` Paul E. McKenney
2026-09-13 19:26 ` Suren Baghdasaryan
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