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Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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12345678910111213141516171819202122232425262728293031323334353637383940414243444546474849505152535455565758596061626364656667686970717273/* SPDX-License-Identifier: GPL-2.0 */#ifndef __LINUX_PAGEISOLATION_H#define __LINUX_PAGEISOLATION_H
#ifdef CONFIG_MEMORY_ISOLATIONstatic inline bool is_migrate_isolate_page(struct page *page){ return get_pageblock_migratetype(page) == MIGRATE_ISOLATE;}static inline bool is_migrate_isolate(int migratetype){ return migratetype == MIGRATE_ISOLATE;}#define get_pageblock_isolate(page) \ get_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)#define clear_pageblock_isolate(page) \ clear_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)#define set_pageblock_isolate(page) \ set_pfnblock_bit(page, page_to_pfn(page), PB_migrate_isolate)#elsestatic inline bool is_migrate_isolate_page(struct page *page){ return false;}static inline bool is_migrate_isolate(int migratetype){ return false;}static inline bool get_pageblock_isolate(struct page *page){ return false;}static inline void clear_pageblock_isolate(struct page *page){}static inline void set_pageblock_isolate(struct page *page){}#endif
/* * Pageblock isolation modes: * PB_ISOLATE_MODE_MEM_OFFLINE - isolate to offline (!allocate) memory * e.g., skip over PageHWPoison() pages and * PageOffline() pages. Unmovable pages will be * reported in this mode. * PB_ISOLATE_MODE_CMA_ALLOC - isolate for CMA allocations * PB_ISOLATE_MODE_OTHER - isolate for other purposes */enum pb_isolate_mode { PB_ISOLATE_MODE_MEM_OFFLINE, PB_ISOLATE_MODE_CMA_ALLOC, PB_ISOLATE_MODE_OTHER,};
void __meminit init_pageblock_migratetype(struct page *page, enum migratetype migratetype, bool isolate);
bool pageblock_isolate_and_move_free_pages(struct zone *zone, struct page *page);bool pageblock_unisolate_and_move_free_pages(struct zone *zone, struct page *page);
int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn, enum pb_isolate_mode mode);
void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn);
int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn, enum pb_isolate_mode mode);bool page_is_unmovable(struct zone *zone, struct page *page, enum pb_isolate_mode mode, unsigned long *step);#endif