| #ifndef MIGRATE_MODE_H_INCLUDED | |
| #define MIGRATE_MODE_H_INCLUDED | |
| /* | |
| * MIGRATE_ASYNC means never block | |
| * MIGRATE_SYNC_LIGHT in the current implementation means to allow blocking | |
| * on most operations but not ->writepage as the potential stall time | |
| * is too significant | |
| * MIGRATE_SYNC will block when migrating pages | |
| */ | |
| enum migrate_mode { | |
| MIGRATE_ASYNC, | |
| MIGRATE_SYNC_LIGHT, | |
| MIGRATE_SYNC, | |
| }; | |
| #endif /* MIGRATE_MODE_H_INCLUDED */ |