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SubjectRe: [RFC] memory hotremove patch take 2 [10/10] (retry swap-in page)
On Wed, 09 May 2007 12:12:32 +0900
Yasunori Goto <y-goto@jp.fujitsu.com> wrote:

> There is a race condition between swap-in and unmap_and_move().
> When swap-in occur, page_mapped might be not set yet.
> So, unmap_and_move() gives up at once, and tries later.
>
>
Note: this will not happen in sys_migratepage(), it holds mm->sem and
gathers migration target page from page table.

-Kame

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