From: Shakeel Butt <shakeel.butt@linux.dev>
To: Baolin Wang <baolin.wang@linux.alibaba.com>
Cc: akpm@linux-foundation.org, hannes@cmpxchg.org, david@redhat.com,
mhocko@kernel.org, zhengqi.arch@bytedance.com,
lorenzo.stoakes@oracle.com, hughd@google.com,
willy@infradead.org, linux-mm@kvack.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 2/2] mm: vmscan: simplify the folio refcount check in pageout()
Date: Fri, 12 Sep 2025 09:16:30 -0700 [thread overview]
Message-ID: <g3seb57wsx2qn7tks33gudalcxfxk7ejq6cmkdbsfalb7sxoru@2esiwxtv7wia> (raw)
In-Reply-To: <e475c5ddbb94763b12d396122ade8ee3c711a967.1757648598.git.baolin.wang@linux.alibaba.com>
On Fri, Sep 12, 2025 at 11:45:08AM +0800, Baolin Wang wrote:
> Since we no longer attempt to write back filesystem folios in pageout(),
> and only tmpfs/shmem folios and anonymous swapcache folios can be written
> back, we can remove the redundant folio_test_private() when checking the
> folio's refcount, as tmpfs/shmem and swapcache folios do not use the
> PG_private flag.
>
> While we're at it, we can open-code the folio refcount check instead of
> adding a simple helper that has only one user.
>
> Signed-off-by: Baolin Wang <baolin.wang@linux.alibaba.com>
Acked-by: Shakeel Butt <shakeel.butt@linux.dev>
prev parent reply other threads:[~2025-09-12 16:16 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-12 3:45 [PATCH 0/2] some cleanups for pageout() Baolin Wang
2025-09-12 3:45 ` [PATCH 1/2] mm: vmscan: remove folio_test_private() check in pageout() Baolin Wang
2025-09-12 8:24 ` David Hildenbrand
2025-09-12 8:24 ` David Hildenbrand
2025-09-12 8:31 ` Baolin Wang
2025-09-12 8:57 ` David Hildenbrand
2025-09-12 9:03 ` Baolin Wang
2025-09-12 8:57 ` David Hildenbrand
2025-09-12 15:21 ` Matthew Wilcox
2025-09-13 3:04 ` Baolin Wang
2025-09-15 20:47 ` Matthew Wilcox
2025-09-18 2:45 ` Baolin Wang
2025-09-12 16:13 ` Shakeel Butt
2025-09-13 3:24 ` Baolin Wang
2025-09-15 20:00 ` Shakeel Butt
2025-09-16 4:00 ` Hugh Dickins
2025-09-16 7:18 ` Baolin Wang
2025-09-17 3:50 ` Baolin Wang
2025-09-17 7:49 ` Hugh Dickins
2025-09-18 2:22 ` Baolin Wang
2025-09-12 3:45 ` [PATCH 2/2] mm: vmscan: simplify the folio refcount " Baolin Wang
2025-09-12 8:58 ` David Hildenbrand
2025-09-12 16:16 ` Shakeel Butt [this message]
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