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AJvYcCWWjpR9kBRteqTz8JFDCKUSjnVpDhcI01LudLlJEKj1LcRNQAAZClDgkc4LvN5pHMgkMBp85wnDkg==@kvack.org X-Gm-Message-State: AOJu0Yw1IKz/RxRGNLfKifqUoPbMFmJvniSBcLfvMsBkG0zqo0WFnlSI JtNVp41963tcv2ITqtmEGfLGhsvYj67j32dGdgCv7RwAw+CU/mh38OFMit6/0wVN+B6HJ8RCeOh BRgaXR08UiYZWYA== X-Google-Smtp-Source: AGHT+IEzOjUKHHk546qLMa+fb+TkJDXbIwoDrKmpkBwNwz83aSZlApmXkbT2tXI+flv4Y4MXC/eUiYjM/ow/+g== X-Received: from pgjz22.prod.google.com ([2002:a63:e556:0:b0:bac:6acd:818a]) (user=jiaqiyan job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a20:9149:b0:353:110e:9b89 with SMTP id adf61e73a8af0-376a9acef57mr4054062637.49.1766169239272; Fri, 19 Dec 2025 10:33:59 -0800 (PST) Date: Fri, 19 Dec 2025 18:33:44 +0000 In-Reply-To: <20251219183346.3627510-1-jiaqiyan@google.com> Mime-Version: 1.0 References: <20251219183346.3627510-1-jiaqiyan@google.com> X-Mailer: git-send-email 2.52.0.322.g1dd061c0dc-goog Message-ID: <20251219183346.3627510-2-jiaqiyan@google.com> Subject: [PATCH v2 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-Server: rspam01 X-Rspamd-Queue-Id: A0EA7180017 X-Stat-Signature: 9a96sahmyze8mdfkjk8puz8opwixb7e5 X-Rspam-User: X-HE-Tag: 1766169240-515760 X-HE-Meta: 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 P50RXsKj 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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); } -- 2.52.0.322.g1dd061c0dc-goog