On Wed, Nov 18, 2015 at 08:31:03PM +0400, Stanislav Kinsburskiy wrote: > This patch add pages zeroing option to free_pages_prepare(). > It's disabled by default. To enable it one should add "zero-free-pages" > kernel option to kernel boot parameters. > Note, that kernel boot option handling and enabling of pages zeroing are > divided. The reason for this is that static keys initialization can't be > performed during kernel parameters parsing (can't specify, what is the exact > reason, but kernel just doesn't boot, if static key is incremented on > parameter callback). Because of this split, actual zeroing is enabled later > during kernel boot, but still early enough.
> Another thing to notice, is that code is moved to a separate source file. > The reason for this is to simplify rebases in future. The last paragraph isn't true anymore :-) > > https://jira.sw.ru/browse/PSBM-33071 > > v2: All the code was moved to mm/pages_alloc.c Yeah, I like this more. Reviewed-by: Vladimir Davydov <vdavy...@virtuozzo.com> Come to think of it, with jump labels we can make it possible to flip this feature at runtime via sysctl, but it's surely beyond the scope of this patch. _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
