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SubjectRe: [PATCH 03/10] ksm: define MADV_MERGEABLE and MADV_UNMERGEABLE
Izik Eidus wrote:
> From: Hugh Dickins <>
> 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 <>
> Signed-off-by: Chris Wright <>
> Signed-off-by: Izik Eidus <>

Acked-by: Rik van Riel <>

All rights reversed.

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