| /* 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 */ |
