On Wed, 22 Jun 2011, Cong Wang wrote:
Introduce "transparent_hugepage=0" to totally disable THP.
"transparent_hugepage=never" means setting THP to be partially
disabled, we need a new way to totally disable it.
Why can't you just compile it off so you never even compile
mm/huge_memory.c in the first place and save the space in the kernel image
as well? Having the interface available to enable the feature at runtime
is worth the savings this patch provides, in my opinion.
If you're proposing a patch for a specific purpose, it's appropriate to
include that in the changelog.
But now that I know what you're proposing this for, it's an easy NACK:
transparent_hugepage=0 has no significant benefit over
transparent_hugepage=never for kdump because the memory savings is