The field is only used in swap code.
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| @@ -329,7 +329,9 @@ struct vm_area_struct { · 328 unmodified lines | |||
| 329 | struct file * vm_file; /* File we map to (can be NULL). */ | 329 | struct file * vm_file; /* File we map to (can be NULL). */ |
| 330 | void * vm_private_data; /* was vm_pte (shared mem) */ | 330 | void * vm_private_data; /* was vm_pte (shared mem) */ |
| 331 | 331 | ||
| 332 | #ifdef CONFIG_SWAP | ||
| 332 | atomic_long_t swap_readahead_info; | 333 | atomic_long_t swap_readahead_info; |
| 334 | #endif | ||
| 333 | #ifndef CONFIG_MMU | 335 | #ifndef CONFIG_MMU |
| 334 | struct vm_region *vm_region; /* NOMMU mapping region */ | 336 | struct vm_region *vm_region; /* NOMMU mapping region */ |
| 335 | #endif | 337 | #endif |