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AFNElJ9ygH/se7u+6oA/p8gKuGL0CH2+WL2C5oX1DVUQ14SWpFL9AfUH2+QOlYkdG2EC2LvpIrt3iOrS2w==@kvack.org X-Gm-Message-State: AOJu0Yxe3f+L3qGy8KRgBapeijRYDIuwrjDD5gkLxjgaKdeTuoO30laX /qBZ1vfy3Ajkm3ycreZUXbjlchm5mZPljs0APyTiPhstSNJmPnXgy+4XI3AoWsutRjhRCXdWNZO fusSND1o+bqZpwg== X-Received: from plgy12.prod.google.com ([2002:a17:903:22cc:b0:2b2:4713:9ce4]) (user=jiaqiyan job=prod-delivery.src-stubby-dispatcher) by 2002:a17:902:ce85:b0:2bd:4d4b:9143 with SMTP id d9443c01a7336-2bf36795110mr71007705ad.8.1780207113952; Sat, 30 May 2026 22:58:33 -0700 (PDT) Date: Sun, 31 May 2026 05:58:27 +0000 In-Reply-To: <20260531055829.3636554-1-jiaqiyan@google.com> Mime-Version: 1.0 References: <20260531055829.3636554-1-jiaqiyan@google.com> X-Mailer: git-send-email 2.54.0.823.g6e5bcc1fc9-goog Message-ID: <20260531055829.3636554-3-jiaqiyan@google.com> Subject: [PATCH v5 2/4] mm/memory-failure: set has_hwpoisoned flags on dissolved HugeTLB folio From: Jiaqi Yan To: ljs@kernel.org, linmiaohe@huawei.com, osalvador@kernel.org, ziy@nvidia.com, harry.yoo@oracle.com, willy@infradead.org Cc: osalvador@suse.de, lorenzo.stoakes@oracle.com, jackmanb@google.com, hannes@cmpxchg.org, nao.horiguchi@gmail.com, david@kernel.org, william.roche@oracle.com, tony.luck@intel.com, wangkefeng.wang@huawei.com, jane.chu@oracle.com, akpm@linux-foundation.org, muchun.song@linux.dev, liam@infradead.org, rientjes@google.com, duenwen@google.com, jthoughton@google.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, vbabka@suse.cz, rppt@kernel.org, shuah@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: 5B8321A0007 X-Stat-Signature: g6qf4m8q6wyutzc5hmpq7cw93szjcd77 X-Rspam-User: X-HE-Tag: 1780207115-408717 X-HE-Meta: U2FsdGVkX19QEZP58omxmOM+zAbv+tZj47CLC6yHVgid4NDbFeB3spD7xpusz9vh7TGj0RQlyTjYOhe6KWfKZnjKSv0FnGPeOX4YxDyv+yX8ww1h+nYWNJ6q9vY2RJ3k7zzltwVdgqso6/Eh4+uqxyS+5YYPNGfIGHtgV877CR8c0fatAYaemqdA117kVoQeul5Ut/ik4QjEeDy8DQEqLAzOTU/XhPb9bX7wsnIBzQ+Rz++mtAp0z9Jyo7vnquwlHBo2yFtMIDz01I0/wO3sndQWnESx1REWFXCGmYUIe5GXYMzj5v1ef5CxEg1ki74tYFB3R/NDs8Wv6P8tt1B6WC0WfOmEeKO7JakgfJMtr4+koQfnTn6LYr5bXN3Sz2FWUnIoPJngym5rJJvyl/3IPuWUOB0Vyl2fqZutnj0anAliFroV/xBMGCgdY4FWKNINJjwaB0Kg0fWv/72ESiWjpd599Na7bBvjTfyqxEeJjuLI6y+Q8lXLpFmHLL0SS1QyI78AbyqIKr7bqqAahQ93DI2m/oBrOIWQW1fxV6Ku7GXxuegXHCsx41LkgKEwv8OqcWFCqu+1quFq3a0SVAcgT9Ydh7U0Vni7shbUynsq6bX9+pwfFVJiN39nGHuPD23ww3xxYPPEE8lTegMboQC5QA/GOI9Lz3baNHf/Cx/tTzGLB83fzg4NthenIeM86Sr25mln4j4KFVWfRCsmaLKsB83nuHTzOGQMthZ8XvvG18/Ip7fPFz/s+RiJZJoqtikH6LIm2VAutPpNckcBaNaxIabhQ/dq9sABiP6vDj8KtYuHRNsDfYFd0l/YEJ0AljezFUP55WTj67PoIr4oPpNTnoh8dCELVl1wWwep6xpj83eded1CWpR63IP3O0nDdqEjTwAJGSs2YoBiLjhHhDmb4PJfdrvnvG2XhcxcanKf9G12o9rNZyC8bIxYefpwc8MSC8j6dJEyv8ktaF5Ya+u bBvAxeHC hkuXShDuZZVAYigoEoZyQujUJ+iAVd1k3FQ7duMLOBd+b82rH8IH4FKMKd752GltSBUenq1PcTKPXVsjdybYxQ/QzbHvKG+XkjjWbK3Gr0Z40KA0INqyYwrC5IeObdXGitCZ4tyiM4lQ7+DsNHeQppxV5DZPiokKcAJPyQxQMCkz/di0vVnskk0uWBYNXGBP2s5zoPG/VX0+D0ZluWONRq4+oP8KuHNChNNao4Iq3DF84tOzMJKNnPVcXHqanjDx2oTz9r5v7pSDchvhjwmqLkETGMeLw2mr/exaDy8sBnNNwcZca9i36ItVMaOScxGcB5K4rwZ9a4hsC23JriNKx8qysHJnfnYq5CkU3CXFEKl1WqwBW6nxnFmgal0db1tBkwI4r4FzLPwrMTyGizXhxHoclNjgToEczOTEkx53DP9XzbjZQNUWpx5+okfLYqy/WVvFuPLoqmO3plcYn7RKj9W91crZcfTFieohrM59+6dKsUEAJ2NfGWK/GPozIvXQo58AkX7/HzmPh8nN4spmcMmzxZHbgsFTsuuBUwu80FksjP9ZpQDu9YHKyP+mPjsue/UZUYy98l5S/64SrZVGoUBji8+ObkmaoB7Jfid3kdcRS90kL3zK4bOt45gEhIwv0SitBoYydjYZoW4wryRPjyOPFdmYKFmy/8RJHsK0B6QXAnUc= 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 7223f6f4e2b4..223ec3b2d62f 100644 --- a/include/linux/page-flags.h +++ b/include/linux/page-flags.h @@ -893,7 +893,7 @@ 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 51508a55c405..95979b7995c1 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -1951,6 +1951,7 @@ 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); } -- 2.54.0.823.g6e5bcc1fc9-goog