include/linux/migrate_mode.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 #ifndef MIGRATE_MODE_H_INCLUDED
   3 #define MIGRATE_MODE_H_INCLUDED
   4 /*
   5  * MIGRATE_ASYNC means never block
   6  * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking
   7  *      on most operations but not ->writepage as the potential stall time
   8  *      is too significant
   9  * MIGRATE_SYNC will block when migrating pages
  10  */
  11 enum migrate_mode {
  12         MIGRATE_ASYNC,
  13         MIGRATE_SYNC_LIGHT,
  14         MIGRATE_SYNC,
  15 };
  16
  17 enum migrate_reason {
  18         MR_COMPACTION,
  19         MR_MEMORY_FAILURE,
  20         MR_MEMORY_HOTPLUG,
  21         MR_SYSCALL,             /* also applies to cpusets */
  22         MR_MEMPOLICY_MBIND,
  23         MR_NUMA_MISPLACED,
  24         MR_CONTIG_RANGE,
  25         MR_LONGTERM_PIN,
  26         MR_DEMOTION,
  27         MR_DAMON,
  28         MR_TYPES
  29 };
  30
  31 #endif          /* MIGRATE_MODE_H_INCLUDED */