1 #ifndef MIGRATE_MODE_H_INCLUDED 2 #define MIGRATE_MODE_H_INCLUDED 3 /* 4 * MIGRATE_ASYNC means never block 5 * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking 6 * on most operations but not ->writepage as the potential stall time 7 * is too significant 8 * MIGRATE_SYNC will block when migrating pages 9 */ 10 enum migrate_mode { 11 MIGRATE_ASYNC, 12 MIGRATE_SYNC_LIGHT, 13 MIGRATE_SYNC, 14 }; 15 16 #endif /* MIGRATE_MODE_H_INCLUDED */ 17