diff options
Diffstat (limited to 'sys/vm/vm_page.h')
| -rw-r--r-- | sys/vm/vm_page.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/sys/vm/vm_page.h b/sys/vm/vm_page.h index e8f68d2792cb..3133ee437ba9 100644 --- a/sys/vm/vm_page.h +++ b/sys/vm/vm_page.h @@ -219,6 +219,9 @@ extern struct vpglocks pa_lock[]; * pte mappings, nor can they be removed from their objects via * the object, and such pages are also not on any PQ queue. * + * PG_REFERENCED may be cleared only if the object containing the page is + * locked. + * * PG_WRITEABLE is set exclusively on managed pages by pmap_enter(). When it * does so, the page must be VPO_BUSY. */ |