Module kernel::mm::virt::flags

All possible flags for VmaRef.

Constants

• ACCOUNT
  Is a VM accounted object.
• ARCH_1
  Architecture-specific flag.
• DONTCOPY
  Do not copy this vma on fork.
• DONTDUMP
  Do not include in the core dump.
• DONTEXPAND
  Cannot expand with mremap().
• EXEC
  Mapping allows execution.
• HUGEPAGE
  MADV_HUGEPAGE marked this vma.
• HUGETLB
  Huge TLB Page VM.
• IO
  Memory mapped I/O or similar.
• LOCKONFAULT
  Lock the pages covered when they are faulted in.
• MAYEXEC
  Mapping may be updated to allow execution.
• MAYREAD
  Mapping may be updated to allow reads.
• MAYSHARE
  Mapping may be updated to be shared.
• MAYWRITE
  Mapping may be updated to allow writes.
• MERGEABLE
  KSM may merge identical pages.
• MIXEDMAP
  Can contain struct page and pure PFN pages.
• NOHUGEPAGE
  MADV_NOHUGEPAGE marked this vma.
• NONE
  No flags are set.
• NORESERVE
  Should the VM suppress accounting.
• PFNMAP
  Page-ranges managed without struct page, just pure PFN.
• READ
  Mapping allows reads.
• SHARED
  Mapping is shared.
• SOFTDIRTY
  Not soft dirty clean area.
• SYNC
  Synchronous page faults. (DAX-specific)
• WIPEONFORK
  Wipe VMA contents in child on fork.
• WRITE
  Mapping allows writes.