Re: [PATCH v3 4/4] overcommit: introduce mem-lock=on-fault

[Peter Xu]

On Thu, Dec 12, 2024 at 02:04:33AM +0300, Daniil Tatianin wrote:
> Locking the memory without MCL_ONFAULT instantly prefaults any mmaped
> anonymous memory with a write-fault, which introduces a lot of extra
> overhead in terms of memory usage when all you want to do is to prevent
> kcompactd from migrating and compacting QEMU pages. Add an option to
> only lock pages lazily as they're faulted by the process by using
> MCL_ONFAULT if asked.
> 
> Signed-off-by: Daniil Tatianin <d-tatianin@yandex-team.ru>

Reviewed-by: Peter Xu <peterx@redhat.com>

-- 
Peter Xu