Re: [PATCH 1/3] mm: completely disable THP by transparent_hugepage=never

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于 2011年06月21日 00:58, Mel Gorman 写道:
On Tue, Jun 21, 2011 at 12:34:28AM +0800, Amerigo Wang wrote:
transparent_hugepage=never should mean to disable THP completely,
otherwise we don't have a way to disable THP completely.
The design is broken.


I don't get why it's broken. Why would the user be prevented from
enabling it at runtime?


We need to a way to totally disable it, right? Otherwise, when I configure
THP in .config, I always have THP initialized even when I pass "=never".

For me, if you don't provide such way to disable it, it is not flexible.

I meet this problem when I try to disable THP in kdump kernel, there is
no user of THP in kdump kernel, THP is a waste for kdump kernel. This is
why I need to find a way to totally disable it.

Thanks.

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