Messages in this thread | | | Date | Mon, 18 Jul 2016 14:51:50 +0900 | From | Joonsoo Kim <> | Subject | Re: [PATCH 1/2] mem-hotplug: use GFP_HIGHUSER_MOVABLE in, alloc_migrate_target() |
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On Fri, Jul 15, 2016 at 10:47:06AM +0800, Xishi Qiu wrote: > alloc_migrate_target() is called from migrate_pages(), and the page > is always from user space, so we can add __GFP_HIGHMEM directly.
No, all migratable pages are not from user space. For example, blockdev file cache has __GFP_MOVABLE and migratable but it has no __GFP_HIGHMEM and __GFP_USER.
And, zram's memory isn't GFP_HIGHUSER_MOVABLE but has __GFP_MOVABLE.
Thanks.
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