diff options
Diffstat (limited to 'include/linux/memory-failure.h')
| -rw-r--r-- | include/linux/memory-failure.h | 28 |
1 files changed, 28 insertions, 0 deletions
diff --git a/include/linux/memory-failure.h b/include/linux/memory-failure.h new file mode 100644 index 000000000000..d333dcdbeae7 --- /dev/null +++ b/include/linux/memory-failure.h @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +#ifndef _LINUX_MEMORY_FAILURE_H +#define _LINUX_MEMORY_FAILURE_H + +#include <linux/interval_tree.h> + +struct pfn_address_space { + struct interval_tree_node node; + struct address_space *mapping; + int (*pfn_to_vma_pgoff)(struct vm_area_struct *vma, + 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 */ |