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Fri, 28 Aug 2026 06:42:05 +0000 X-Mizu-Trace-ID: da3454e6c9281e75 X-Migadu-Flow: FLOW_OUT Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 16.0 \(3864.600.51.1.1\)) Subject: Re: [PATCH v2 1/2] mm/hugetlb: do not dissolve gigantic pages without runtime support From: Muchun Song In-Reply-To: <20260823044118.1097121-2-xialonglong2025@163.com> Date: Fri, 28 Aug 2026 14:41:51 +0800 Cc: osalvador@suse.de, akpm@linux-foundation.org, david@kernel.org, mike.kravetz@oracle.com, mhocko@suse.com, linmiaohe@huawei.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, xialonglong@kylinos.cn Content-Transfer-Encoding: quoted-printable Message-Id: References: <20260823044118.1097121-1-xialonglong2025@163.com> <20260823044118.1097121-2-xialonglong2025@163.com> To: Longlong Xia X-Mailer: Apple Mail (2.3864.600.51.1.1) X-Stat-Signature: 381j7kdkj7oduccc8ndbtk5jsijpdz58 X-Rspamd-Server: rspam12 X-Rspamd-Queue-Id: 296DE14000A X-Rspam-User: X-HE-Tag: 1787899326-402075 X-HE-Meta: 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 zoLdLAxJ Hp0lpchbn7Zl9HPZ/cO2M6EpXBRZKh2CeAXzGOvQ4vCyCXjIh5hAWeDBNxl2Xlti+1SHlZeUTxc2mbkkTlc5tdpmc/J9dG2MwFr2pUy4Bv6knsEgN20wxSHcW2OSojZdMaC35regVYrXh3SPoEUJGcf1C+zBToAh5nPmQN34+zYgNjPL9gMH9Mh9i7icHzaKp9PopxC+fBsMyQmlZeipWEMbNOHTaQw9qkYrpiO/VUuIXZG6wMh2wu5zXUkrOa+x7Wn1T0Eed9QfqVJwwHxQTmIaUekV+4KNvOb8VUTVj0sHfo1YRNkv4wjbtMe/lwAp5fyZ+ Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: > On Aug 23, 2026, at 12:40, Longlong Xia = wrote: >=20 > From: Longlong Xia >=20 > dissolve_free_hugetlb_folio() doesn't check > hstate_is_gigantic_no_runtime(h) though remove_hugetlb_folio()/ > update_and_free_hugetlb_folio() silently bail for such folios, so it > frees a still-listed folio and, on vmemmap restore failure, the > add_hugetlb_folio() rollback corrupts the free list. >=20 > Fixes: 6eb4e88a6d27 ("hugetlb: create remove_hugetlb_page() to = separate functionality") > Assisted-by: Codex:gpt-5.6-sol > Signed-off-by: Longlong Xia Again. Acked-by: Muchun Song Thanks.