include/linux/page-isolation.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef __LINUX_PAGEISOLATION_H
   3 #define __LINUX_PAGEISOLATION_H
   4
   5 #ifdef CONFIG_MEMORY_ISOLATION
   6 static inline bool is_migrate_isolate_page(struct page *page)
   7 {
   8         return get_pageblock_migratetype(page) == MIGRATE_ISOLATE;
   9 }
  10 static inline bool is_migrate_isolate(int migratetype)
  11 {
  12         return migratetype == MIGRATE_ISOLATE;
  13 }
  14 #else
  15 static inline bool is_migrate_isolate_page(struct page *page)
  16 {
  17         return false;
  18 }
  19 static inline bool is_migrate_isolate(int migratetype)
  20 {
  21         return false;
  22 }
  23 #endif
  24
  25 #define MEMORY_OFFLINE  0x1
  26 #define REPORT_FAILURE  0x2
  27
  28 void set_pageblock_migratetype(struct page *page, int migratetype);
  29
  30 bool move_freepages_block_isolate(struct zone *zone, struct page *page,
  31                                   int migratetype);
  32
  33 int start_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
  34                              int migratetype, int flags, gfp_t gfp_flags);
  35
  36 void undo_isolate_page_range(unsigned long start_pfn, unsigned long end_pfn,
  37                              int migratetype);
  38
  39 int test_pages_isolated(unsigned long start_pfn, unsigned long end_pfn,
  40                         int isol_flags);
  41 #endif