Documentation/mm/unevictable-lru.rst

43  * Those owned by ramfs.
45  * Those owned by tmpfs with the noswap mount option.
47  * Those mapped into SHM_LOCK'd shared memory regions.
49  * Those mapped into VM_LOCKED [mlock()ed] VMAs.
195 "cull" such folios that it encounters: that is, it diverts those folios to the
306 mark those pages as mlocked as they are faulted.
373 any "special" VMAs.  So, those VMAs will be ignored for munlock.
389 those cases its mlock_count field is unusable and must be assumed to be 0: so
414 before mlocking any pages already present, if one of those pages were migrated
454 /proc/meminfo's Unevictable and Mlocked amounts do not include those parts
501 those cases its mlock_count field is unusable and must be assumed to be 0: so
520 present, if one of those pages were unmapped by truncation or hole punch before
533 i.e. !page_evictable(page) pages - diverting those to the unevictable list.