Re: 2.6.28-rc2-mm1: possible circular locking

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On Wed, 29 Oct 2008 13:58:40 -0700
Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> We've been calling schedule_on_each_cpu() from within
> lru_add_drain_all() for ages.  What changed to cause all this
> to start happening?

what started to get these out of the weed is that copy_*_user() is now
annotated to (potentially) take the mmap sem (which it does if there's
a fault)... 
previously you had to actually fault to get the lock dependency noticed.

-- 
Arjan van de Ven 	Intel Open Source Technology Centre
For development, discussion and tips for power savings, 
visit atty://www.lesswatts.org
--
To unsubscribe from this list: send the line "unsubscribe kernel-testers" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html

[Index of Archives]     [Linux USB Devel]     [Video for Linux]     [Linux Audio Users]     [Yosemite News]     [Linux Kernel]     [Linux SCSI]

  Powered by Linux