From: <ankita@nvidia.com>
To: <ankita@nvidia.com>, <vsethi@nvidia.com>, <jgg@nvidia.com>,
<mochs@nvidia.com>, <jgg@ziepe.ca>, <skolothumtho@nvidia.com>,
<alex@shazbot.org>, <akpm@linux-foundation.org>,
<linmiaohe@huawei.com>, <nao.horiguchi@gmail.com>
Cc: <cjia@nvidia.com>, <zhiw@nvidia.com>, <kjaju@nvidia.com>,
<yishaih@nvidia.com>, <kevin.tian@intel.com>,
<kvm@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
<linux-mm@kvack.org>
Subject: [PATCH v2 2/3] mm: add stubs for PFNMAP memory failure registration functions
Date: Sat, 13 Dec 2025 04:47:07 +0000 [thread overview]
Message-ID: <20251213044708.3610-3-ankita@nvidia.com> (raw)
In-Reply-To: <20251213044708.3610-1-ankita@nvidia.com>
From: Ankit Agrawal <ankita@nvidia.com>
Add stubs to address CONFIG_MEMORY_FAILURE disabled.
Suggested-by: Alex Williamson <alex@shazbot.org>
Signed-off-by: Ankit Agrawal <ankita@nvidia.com>
---
include/linux/memory-failure.h | 13 +++++++++++--
1 file changed, 11 insertions(+), 2 deletions(-)
diff --git a/include/linux/memory-failure.h b/include/linux/memory-failure.h
index 7b5e11cf905f..d333dcdbeae7 100644
--- a/include/linux/memory-failure.h
+++ b/include/linux/memory-failure.h
@@ -4,8 +4,6 @@
#include <linux/interval_tree.h>
-struct pfn_address_space;
-
struct pfn_address_space {
struct interval_tree_node node;
struct address_space *mapping;
@@ -13,7 +11,18 @@ struct pfn_address_space {
unsigned long pfn, pgoff_t *pgoff);
};
+#ifdef CONFIG_MEMORY_FAILURE
int register_pfn_address_space(struct pfn_address_space *pfn_space);
void unregister_pfn_address_space(struct pfn_address_space *pfn_space);
+#else
+static inline int register_pfn_address_space(struct pfn_address_space *pfn_space)
+{
+ return -EOPNOTSUPP;
+}
+
+static inline void unregister_pfn_address_space(struct pfn_address_space *pfn_space)
+{
+}
+#endif /* CONFIG_MEMORY_FAILURE */
#endif /* _LINUX_MEMORY_FAILURE_H */
--
2.34.1
next prev parent reply other threads:[~2025-12-13 4:47 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-12-13 4:47 [PATCH v2 0/3] mm: fixup pfnmap memory failure handling ankita
2025-12-13 4:47 ` [PATCH v2 1/3] mm: fixup pfnmap memory failure handling to use pgoff ankita
2025-12-17 3:10 ` Miaohe Lin
2025-12-17 18:10 ` Ankit Agrawal
2025-12-18 2:18 ` Miaohe Lin
2025-12-13 4:47 ` ankita [this message]
2025-12-13 4:47 ` [PATCH v2 3/3] vfio/nvgrace-gpu: register device memory for poison handling ankita
2025-12-13 8:00 ` Alex Williamson
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