Re: [PATCH 03/10] ksm: define MADV_MERGEABLE and MADV_UNMERGEABLE

[Rik van Riel]

Izik Eidus wrote:
> From: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
>
> The out-of-tree KSM used ioctls on fds cloned from /dev/ksm to register
> a memory area for merging: we prefer now to use an madvise(2) interface.
>
> This patch just defines MADV_MERGEABLE (to tell KSM it may merge pages
> in this area found identical to pages in other mergeable areas) and
> MADV_UNMERGEABLE (to undo that).
>
> Most architectures use asm-generic, but alpha, mips, parisc, xtensa
> need their own definitions: included here for mmotm convenience, but
> we'll probably want to split this and feed pieces to arch maintainers.
>
> Based upon earlier patches by Chris Wright and Izik Eidus.
>
> Signed-off-by: Hugh Dickins <hugh.dickins@xxxxxxxxxxxxx>
> Signed-off-by: Chris Wright <chrisw@xxxxxxxxxx>
> Signed-off-by: Izik Eidus <ieidus@xxxxxxxxxx>

Acked-by: Rik van Riel <riel@xxxxxxxxxx>

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