Messages in this thread | | | Date | Wed, 22 Jul 2015 14:25:58 +0300 | From | "Kirill A. Shutemov" <> | Subject | Re: [PATCH V4 5/6] mm: mmap: Add mmap flag to request VM_LOCKONFAULT |
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On Tue, Jul 21, 2015 at 03:59:40PM -0400, Eric B Munson wrote: > The cost of faulting in all memory to be locked can be very high when > working with large mappings. If only portions of the mapping will be > used this can incur a high penalty for locking. > > Now that we have the new VMA flag for the locked but not present state, > expose it as an mmap option like MAP_LOCKED -> VM_LOCKED.
What is advantage over mmap() + mlock(MLOCK_ONFAULT)?
-- Kirill A. Shutemov
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