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- /* SPDX-License-Identifier: GPL-2.0 */
- #ifndef _LINUX_SWAPFILE_H
- #define _LINUX_SWAPFILE_H
- /*
- * these were static in swapfile.c but frontswap.c needs them and we don't
- * want to expose them to the dozens of source files that include swap.h
- */
- extern struct swap_info_struct *swap_info[];
- extern unsigned long generic_max_swapfile_size(void);
- unsigned long arch_max_swapfile_size(void);
- /* Maximum swapfile size supported for the arch (not inclusive). */
- extern unsigned long swapfile_maximum_size;
- /* Whether swap migration entry supports storing A/D bits for the arch */
- extern bool swap_migration_ad_supported;
- #endif /* _LINUX_SWAPFILE_H */
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