Re: [PATCH -mm] proc: don't take ->siglock for /proc/pid/oom_adj

From: David Rientjes
Date: Thu Apr 01 2010 - 15:05:07 EST

On Thu, 1 Apr 2010, Oleg Nesterov wrote:

> But. Unless we kill signal->oom_adj, we have another reason for ->siglock,
> we can't update both oom_adj and oom_score_adj atomically, and if we race
> with another thread they can be inconsistent wrt each other. Yes, oom_adj
> is not actually used, except we report it back to user-space, but still.
> So, I am going to send 2 patches. The first one factors out the code
> in base.c and kills signal->oom_adj, the next one removes ->siglock.

Great, thanks!
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