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AJvYcCV2lu6Mj9Gb/mLKgSKmKH9MtIZzOlVRvnroY0h3ScWh7Py4eTTNva53VcRQIb6sMndNLMMk/Qk+RA==@kvack.org X-Gm-Message-State: AOJu0YzjS0h6OKAcXu0E6K1Zf7L3od7Nxgh4aiSm9tMyps0ON0wLINS/ GKiF4BAJQ6sHY+wgiOK7q9I3D74apY5BUAtUedgefs3nXHHwY2iKU3ZC2lKTXZafuzuBhJ6RICT hB/SRIqm01OorGw== X-Google-Smtp-Source: AGHT+IGRsYmD0Owt99yy0ghEM70oDPPy8Wm8X//vCefVX5nk+u6cdO2UbDFZj27GMxMpcJ/JK+UWe9vqv3woFg== X-Received: from pjbgk1.prod.google.com ([2002:a17:90b:1181:b0:327:50fa:eff9]) (user=jiaqiyan job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2642:b0:340:d578:f2a2 with SMTP id 98e67ed59e1d1-34f68c335e4mr15145403a91.6.1768178968964; Sun, 11 Jan 2026 16:49:28 -0800 (PST) Date: Mon, 12 Jan 2026 00:49:21 +0000 In-Reply-To: <20260112004923.888429-1-jiaqiyan@google.com> Mime-Version: 1.0 References: <20260112004923.888429-1-jiaqiyan@google.com> X-Mailer: git-send-email 2.52.0.457.g6b5491de43-goog Message-ID: <20260112004923.888429-2-jiaqiyan@google.com> Subject: [PATCH v3 1/3] mm/memory-failure: set has_hwpoisoned flags on 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, Jiaqi Yan Content-Type: text/plain; charset="UTF-8" X-Rspamd-Queue-Id: 2DCA64000D X-Rspamd-Server: rspam06 X-Stat-Signature: hfz818gxgz39zqh1dj1zg7qfw16qpgr8 X-Rspam-User: X-HE-Tag: 1768178969-179444 X-HE-Meta: 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 F/L2nYwU 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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). This is a prepare change for buddy allocator to handle only the high-order HWPoison folio differently. This cannot be done with hwpoison flag because users cannot tell from the case that the page with hwpoison is hardware corrupted. 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 fbc5a01260c89..d204de6c9792a 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); } -- 2.52.0.457.g6b5491de43-goog