Re: [RFC][PATCH v3 4/6] aio: Don't inherit aio ring memory at fork

[Andrea Arcangeli]

On Tue, Apr 14, 2009 at 03:20:20PM +0900, KOSAKI Motohiro wrote:
> In addition, This patch has good side effect. it also fix "get_user_pages() vs fork" problem.

Yes, patches like 3/6, 4/6, and 6/6 are the side effect of not fixing
the core race in gup and spreading the new rwsem around the gup users,
instead of sticking to a page-granular PG_flag touched at the same
time atomic_inc runs on page->_count.
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