Re: v3.4-rc2 out-of-memory problems (was Re: 3.4-rc1sticks-and-crashs)

From: David Rientjes
Date: Mon Apr 09 2012 - 21:33:51 EST


On Mon, 9 Apr 2012, Colin Cross wrote:

> Before Anton's fix, iterating the tasklist involved taking every task
> lock, which probably made it very expensive.

I'm not sure of the fix you're referring to, but it's not in 3.4-rc2
because lowmem_shrink() still does find_lock_task_mm() for every user
process on the system, which is necessary to safely do get_mm_rss().
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