From: "Luck, Tony" <tony.luck@intel.com>
To: Kefeng Wang <wangkefeng.wang@huawei.com>,
"akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Cc: Miaohe Lin <linmiaohe@huawei.com>,
"nao.horiguchi@gmail.com" <nao.horiguchi@gmail.com>,
Matthew Wilcox <willy@infradead.org>,
"David Hildenbrand" <david@redhat.com>,
Muchun Song <muchun.song@linux.dev>,
Benjamin LaHaise <bcrl@kvack.org>,
"jglisse@redhat.com" <jglisse@redhat.com>,
Zi Yan <ziy@nvidia.com>, Jiaqi Yan <jiaqiyan@google.com>,
Hugh Dickins <hughd@google.com>,
Vishal Moola <vishal.moola@gmail.com>,
Alistair Popple <apopple@nvidia.com>,
"chu, jane" <jane.chu@oracle.com>,
Oscar Salvador <osalvador@suse.de>
Subject: RE: [PATCH v3 4/5] fs: hugetlbfs: support poison recover from hugetlbfs_migrate_folio()
Date: Tue, 28 May 2024 15:41:54 +0000 [thread overview]
Message-ID: <SJ1PR11MB6083354CE70F67B18685BE30FCF12@SJ1PR11MB6083.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20240528134513.2283548-5-wangkefeng.wang@huawei.com>
+ if (unlikely(folio_mc_copy(dst, src))) {
+ folio_ref_unfreeze(src, expected_count);
+ return -EFAULT;
It doesn't look like any code takes action to avoid re-using the poisoned page.
So you survived, hurrah! But left the problem page for some other code to trip over.
-Tony
next prev parent reply other threads:[~2024-05-28 15:42 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-05-28 13:45 [PATCH v3 0/5] mm: migrate: support poison recover from migrate folio Kefeng Wang
2024-05-28 13:45 ` [PATCH v3 1/5] mm: add folio_mc_copy() Kefeng Wang
2024-05-28 14:17 ` Lance Yang
2024-05-29 2:16 ` Kefeng Wang
2024-05-28 20:13 ` Jane Chu
2024-05-29 2:16 ` Kefeng Wang
2024-05-28 13:45 ` [PATCH v3 2/5] mm: migrate: split folio_migrate_mapping() Kefeng Wang
2024-05-28 13:45 ` [PATCH v3 3/5] mm: migrate: support poisoned recover from migrate folio Kefeng Wang
2024-05-28 20:15 ` Jane Chu
2024-05-29 2:19 ` Kefeng Wang
2024-05-28 13:45 ` [PATCH v3 4/5] fs: hugetlbfs: support poison recover from hugetlbfs_migrate_folio() Kefeng Wang
2024-05-28 15:41 ` Luck, Tony [this message]
2024-05-28 20:19 ` Jane Chu
2024-05-28 20:30 ` Luck, Tony
2024-05-28 22:02 ` Jane Chu
2024-05-28 22:10 ` Luck, Tony
2024-05-29 2:48 ` Kefeng Wang
2024-05-28 13:45 ` [PATCH v3 5/5] mm: migrate: remove folio_migrate_copy() Kefeng Wang
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