Messages in this thread | | | Date | Wed, 9 May 2007 12:26:05 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [RFC] memory hotremove patch take 2 [10/10] (retry swap-in page) |
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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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