Re: safety of *mutex_unlock() (Was: [BUG] signal: sighand unprotected when accessed by /proc)

From: Steven Rostedt
Date: Wed Jun 18 2014 - 12:53:19 EST


On Wed, 18 Jun 2014 18:43:59 +0200
Oleg Nesterov <oleg@xxxxxxxxxx> wrote:


> And (contrary to what I said initially) we can rely on this because -rt
> converts spinlock_t into rt_mutex ?

Correct. Because if spinlock_t has this behavior, rt_mutex must have it
too, otherwise -rt will suffer greatly from that. Who knows, maybe this
will fix some strange bug reports that we have had in the past.

-- Steve
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