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AJvYcCVNagplRtD1thw/lofa+u5sTfX5Gpr7WOD3QpL2Vehtp1iNw29iodRm+XNWAcQ5uwH2M7f3FdotDw==@kvack.org X-Gm-Message-State: AOJu0YyMvTxVm5yI4zpErQZD4Id3CvxRjNsflR8woTl2SDh2OufLYBGE YFDxy3JSnXoVIc7v4J38lbaa9m2Qi5c9DuIT6U5TXHLbsb0+G7sxcsLuw1HEEjO4btjkPRj+VgC PimpR5f0HiiZQNA== X-Received: from plblf5.prod.google.com ([2002:a17:902:fb45:b0:2a0:fb2a:79f0]) (user=jiaqiyan job=prod-delivery.src-stubby-dispatcher) by 2002:a17:903:283:b0:29f:1fad:8e50 with SMTP id d9443c01a7336-2a8d959c8abmr134229505ad.3.1770061292645; Mon, 02 Feb 2026 11:41:32 -0800 (PST) Date: Mon, 2 Feb 2026 19:41:24 +0000 In-Reply-To: <20260202194125.2191216-1-jiaqiyan@google.com> Mime-Version: 1.0 References: <20260202194125.2191216-1-jiaqiyan@google.com> X-Mailer: git-send-email 2.53.0.rc1.225.gd81095ad13-goog Message-ID: <20260202194125.2191216-3-jiaqiyan@google.com> Subject: [PATCH v4 2/3] mm/memory-failure: set has_hwpoisoned flags on dissolved HugeTLB folio From: Jiaqi Yan To: jackmanb@google.com, hannes@cmpxchg.org, linmiaohe@huawei.com, ziy@nvidia.com, harry.yoo@oracle.com, willy@infradead.org Cc: nao.horiguchi@gmail.com, david@redhat.com, lorenzo.stoakes@oracle.com, william.roche@oracle.com, tony.luck@intel.com, wangkefeng.wang@huawei.com, jane.chu@oracle.com, akpm@linux-foundation.org, osalvador@suse.de, muchun.song@linux.dev, rientjes@google.com, duenwen@google.com, jthoughton@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Liam.Howlett@oracle.com, vbabka@suse.cz, rppt@kernel.org, surenb@google.com, mhocko@suse.com, boudewijn@delta-utec.com, Jiaqi Yan Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: E416F1C0009 X-Stat-Signature: ig4wj366ydhzjsu6y7tp56mzkqtoxm7n X-Rspam-User: X-HE-Tag: 1770061293-528871 X-HE-Meta: U2FsdGVkX1+YolLgFhHljpCWF5m4/cfjdqq+Qz7GZGIQzveULsfkxNE0ftv7GoCMWCXyZvKw0EHRBuc3HMABppB2UN2DemMZVTJoKDrbVtasy84H5EgMeBQ+0JFwK93RyVYm/VJgnnuS0WmOUROzn63tAO1MC5YMkgX485GI2NVaiW3Le3OGf6E4RSxtePn5ve7Nu8TtUQWCeh2agVLGHP+6vJNBC4m3c5BNlFSRpX1qp6A3fGCu6nLcVxgatDSt22H13L0FEoI/yoVHm9vH5yNhfYzNNDaNBeEjM0LvAnluii1/uM8Dhid88pg/gAmC7RQISK4iFVsfcabsw6nBa142mQXDmvplVCrHitUw+6opWhoNphpGMwKSbfmP6UczdFEqG6N+RXaF6UchblM+3LnfD3hRtLNSKXOqIowYm/AXaw0pZCC1zS+X+5voKZrswWWDA773xKcxFXRzAnqTp0SrT+H9vLi+70EjqN/Q8fxdgMvDqQQIEEO89K6vEEk1+HUGdrXJ+23nXPQeGJ2jaSE35zqBAzSD+06QxdTSz9C5qHHhLE1hmBByn40wnQYLhFBeTS0oCKLWyV9oUeKX0MDkCpp/a+cbVRwexkAdqxEHG9I1bn+0F2TMdukZ4vEHZCN5AJ+/jgHKFwwf5fZTP2qc/FnvHRor8Ke2b57oBSCnSc+eevQm2yH+MUqv5vv0fPwT/CeNDzknn8OmtmfNtN619WgcWebDPrIxTGj0IpW+LfnuGX8rzDNkBQDI7GZFTt0v/iNMRr+JU5K7bUXa5I/eb4BNyTcUCwP3YUrE5M+hbfLq7q1KxiCQzvxYP1832bWts4tDG3v33hufyH+jFnbb0sVdqxhEO+uYrqllkk4K67e14BfkW7Ogz3qsz7fBpoECjwHy4cKzftEqQNOC9di3/wdad5wuvWvAa7xYDElwlnJ5sB9wKtnIm/sYmpXEd2HofCHoSeYsiKNtsUg /vziAzt2 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 X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: When a free HWPoison HugeTLB folio is dissolved, it becomes non-HugeTLB and is released to buddy allocator as a high-order folio. Set has_hwpoisoned flags on the high-order folio so that buddy allocator can tell that it contains certain HWPoison page(s), and can handle it specially with free_has_hwpoisoned(). Signed-off-by: Jiaqi Yan --- include/linux/page-flags.h | 2 +- mm/memory-failure.c | 1 + 2 files changed, 2 insertions(+), 1 deletion(-) diff --git a/include/linux/page-flags.h b/include/linux/page-flags.h index f7a0e4af0c734..d13835e265952 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -904,7 +904,7 @@ static inline int PageTransCompound(const struct page *page) TESTPAGEFLAG_FALSE(TransCompound, transcompound) #endif -#if defined(CONFIG_MEMORY_FAILURE) && defined(CONFIG_TRANSPARENT_HUGEPAGE) +#if defined(CONFIG_MEMORY_FAILURE) && (defined(CONFIG_TRANSPARENT_HUGEPAGE) || defined(CONFIG_HUGETLB_PAGE)) /* * PageHasHWPoisoned indicates that at least one subpage is hwpoisoned in the * compound page. diff --git a/mm/memory-failure.c b/mm/memory-failure.c index c80c2907da333..529a83a325740 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1952,6 +1952,7 @@ void folio_clear_hugetlb_hwpoison(struct folio *folio) if (folio_test_hugetlb_vmemmap_optimized(folio)) return; folio_clear_hwpoison(folio); + folio_set_has_hwpoisoned(folio); folio_free_raw_hwp(folio, true); } -- 2.53.0.rc2.204.g2597b5adb4-goog