It limits the amount of physical memory that can be pinned by a zone by
mlock() or shmat(SHM_SHARE_MMU).  These are typically done by databases
or performance critical apps.

locked memory cannot be paged out.

-Steve L.

On Wed, Oct 28, 2009 at 10:25:01AM -0700, Ketan wrote:
> So for what purpose zone.max-locked-memory is used ?
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