Re: Need to take mmap_sem lock in move_pages.

[Christoph Lameter]

On Wed, 4 Feb 2009, KAMEZAWA Hiroyuki wrote:

> >  1. do_move_page_to_node_array() at el. needs mmap_sem (read-side) because it
> >     scans page table and vma. While we have to scan vmas to find pages for
> >     migration, it needs mmap_sem.

Right.

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