From: Qi Zheng <qi.zheng@linux.dev>
To: baolin.wang@linux.alibaba.com
Cc: linux-mm@kvack.org, linux-kernel@vger.kernel.org,
hughd@google.com, usama.arif@linux.dev,
akpm@linux-foundation.org, brauner@kernel.org, david@kernel.org
Subject: Re: [PATCH v3 2/3] mm: shmem: move unused huge shrinklist queuing past the truncation check
Date: Tue, 4 Aug 2026 15:03:00 +0800 [thread overview]
Message-ID: <77c64cfb-012f-4e66-87bc-536bf0fc4ca6@linux.dev> (raw)
In-Reply-To: <e3d8eb0605eb8c4836fb1f376a0487328135b2c9.1785746588.git.zhengqi.arch@bytedance.com>
On 8/3/26 4:46 PM, Qi Zheng wrote:
> From: Qi Zheng <zhengqi.arch@bytedance.com>
>
> The shmem_get_folio_gfp() adds the inode to the unused huge shrinker list
> at the alloced label, but a subsequent truncation check may still fail and
> remove the folio, leaving the inode on the list with a stale folio.
>
> The original code works because the shrinker re-looks-up the folio and
> drops stale entries, but it is cleaner to queue the inode only after all
> checks that might remove the folio have passed.
>
> So just make the pure structural move with no functional change, and it
> serves as preparation for the memcg-aware shrinker conversion.
>
> Signed-off-by: Qi Zheng <zhengqi.arch@bytedance.com>
missed adding:
Suggested-by: Baolin Wang <baolin.wang@linux.alibaba.com>
next prev parent reply other threads:[~2026-08-04 7:03 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-03 8:46 [PATCH v3 0/3] make unused huge shrinker memcg aware Qi Zheng
2026-08-03 8:46 ` [PATCH v3 1/3] fs: fix missed removal of super_fs_objects_eligible() Qi Zheng
2026-08-03 21:20 ` Andrew Morton
2026-08-04 6:18 ` Qi Zheng
2026-08-03 8:46 ` [PATCH v3 2/3] mm: shmem: move unused huge shrinklist queuing past the truncation check Qi Zheng
2026-08-04 7:03 ` Qi Zheng [this message]
2026-08-03 8:46 ` [PATCH v3 3/3] mm: shmem: make unused huge shrinker memcg aware Qi Zheng
2026-08-03 12:21 ` [PATCH v3 0/3] " David Hildenbrand (Arm)
2026-08-04 3:51 ` Qi Zheng
2026-08-03 21:24 ` Andrew Morton
2026-08-04 6:36 ` Qi Zheng
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