- admin_reserve_kbytes
- block_dump
- compact_memory
+- compaction_proactiveness
- compact_unevictable_allowed
- dirty_background_bytes
- dirty_background_ratio
- dirty_writeback_centisecs
- drop_caches
- extfrag_threshold
+- highmem_is_dirtyable
- hugetlb_shm_group
- laptop_mode
- legacy_va_layout
acceptable trade for large contiguous free memory. Set to 0 to prevent
compaction from moving pages that are unevictable. Default value is 1.
On CONFIG_PREEMPT_RT the default value is 0 in order to avoid a page fault, due
-to compaction, which would block the task from becomming active until the fault
+to compaction, which would block the task from becoming active until the fault
is resolved.
unprivileged_userfaultfd
========================
-This flag controls whether unprivileged users can use the userfaultfd
-system calls. Set this to 1 to allow unprivileged users to use the
-userfaultfd system calls, or set this to 0 to restrict userfaultfd to only
-privileged users (with SYS_CAP_PTRACE capability).
+This flag controls the mode in which unprivileged users can use the
+userfaultfd system calls. Set this to 0 to restrict unprivileged users
+to handle page faults in user mode only. In this case, users without
+SYS_CAP_PTRACE must pass UFFD_USER_MODE_ONLY in order for userfaultfd to
+succeed. Prohibiting use of userfaultfd for handling faults from kernel
+mode may make certain vulnerabilities more difficult to exploit.
-The default value is 1.
+Set this to 1 to allow unprivileged users to use the userfaultfd system
+calls without any restrictions.
+
+The default value is 0.
user_reserve_kbytes