From: Kairui Song <ryncsn@gmail.com>
To: Barry Song <21cnbao@gmail.com>
Cc: linux-mm@kvack.org, Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@kernel.org>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Zi Yan <ziy@nvidia.com>,
Baolin Wang <baolin.wang@linux.alibaba.com>,
Hugh Dickins <hughd@google.com>, Chris Li <chrisl@kernel.org>,
Kemeng Shi <shikemeng@huaweicloud.com>,
Nhat Pham <nphamcs@gmail.com>, Baoquan He <bhe@redhat.com>,
Johannes Weiner <hannes@cmpxchg.org>,
Yosry Ahmed <yosry.ahmed@linux.dev>,
Youngjun Park <youngjun.park@lge.com>,
Chengming Zhou <chengming.zhou@linux.dev>,
Roman Gushchin <roman.gushchin@linux.dev>,
Shakeel Butt <shakeel.butt@linux.dev>,
Muchun Song <muchun.song@linux.dev>,
Qi Zheng <zhengqi.arch@bytedance.com>,
linux-kernel@vger.kernel.org, cgroups@vger.kernel.org
Subject: Re: [PATCH RFC 12/15] mm, swap: merge zeromap into swap table
Date: Thu, 26 Feb 2026 13:49:04 +0800 [thread overview]
Message-ID: <CAMgjq7BsRvdZa6VXomi6X3VjGqd=o-7=ZaE+Mrj8uXR43kBJsA@mail.gmail.com> (raw)
In-Reply-To: <CAGsJ_4zg_C3YbOLduC5dEb-0Ozm033d-KGK7E1Uv5n6NbjGokQ@mail.gmail.com>
Barry Song <21cnbao@gmail.com> 于 2026年2月26日周四 05:40写道：
> I did notice that some cache data has been consolidated from two
> places—the swap table and the zeromap—into a single location.
> However, swap_zeromap_batch() previously operated on a bitmap,
> whereas it now accesses multiple data. Is that also
> expected to be fine?
Yeah, should be totally fine. The only two callers are:
__swap_cache_check_batch, right before looping the swap table as I
just mentioned and can be inlined to reduce overhead.
Another one is swap_read_folio_zeromap, also should be right after
adding the folio into swap table.
next prev parent reply other threads:[~2026-02-26 5:49 UTC|newest]
Thread overview: 34+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-02-19 23:42 [PATCH RFC 00/15] mm, swap: swap table phase IV with dynamic ghost swapfile Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 01/15] mm: move thp_limit_gfp_mask to header Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 02/15] mm, swap: simplify swap_cache_alloc_folio Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 03/15] mm, swap: move conflict checking logic of out swap cache adding Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 04/15] mm, swap: add support for large order folios in swap cache directly Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 05/15] mm, swap: unify large folio allocation Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 06/15] memcg, swap: reparent the swap entry on swapin if swapout cgroup is dead Kairui Song via B4 Relay
2026-02-23 16:22 ` Johannes Weiner
2026-02-24 5:44 ` Shakeel Butt
2026-02-24 8:08 ` Kairui Song
2026-02-19 23:42 ` [PATCH RFC 07/15] memcg, swap: defer the recording of memcg info and reparent flexibly Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 08/15] mm, swap: store and check memcg info in the swap table Kairui Song via B4 Relay
2026-02-23 16:36 ` Johannes Weiner
2026-02-24 8:34 ` Kairui Song
2026-02-24 15:58 ` Johannes Weiner
2026-02-19 23:42 ` [PATCH RFC 09/15] mm, swap: support flexible batch freeing of slots in different memcg Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 10/15] mm, swap: always retrieve memcg id from swap table Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 11/15] mm/swap, memcg: remove swap cgroup array Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 12/15] mm, swap: merge zeromap into swap table Kairui Song via B4 Relay
2026-02-25 12:19 ` Barry Song
2026-02-25 12:33 ` Kairui Song
2026-02-25 21:39 ` Barry Song
2026-02-26 5:49 ` Kairui Song [this message]
2026-02-19 23:42 ` [PATCH RFC 13/15] mm: ghost swapfile support for zswap Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 14/15] mm, swap: add a special device for ghost swap setup Kairui Song via B4 Relay
2026-02-19 23:42 ` [PATCH RFC 15/15] mm, swap: allocate cluster dynamically for ghost swapfile Kairui Song via B4 Relay
2026-02-21 8:15 ` [PATCH RFC 00/15] mm, swap: swap table phase IV with dynamic " Barry Song
2026-02-21 9:07 ` Kairui Song
2026-02-21 9:30 ` Barry Song
2026-02-23 16:52 ` Johannes Weiner
2026-02-24 2:10 ` Kairui Song
2026-02-23 18:22 ` Nhat Pham
2026-02-24 3:34 ` Kairui Song
2026-02-24 21:56 ` Nhat Pham
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