Re: RCU locking issues in jbd2_dev_to_name

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

 



On Wed, 27 Jul 2011 07:28:27 -0400 Theodore Tso <tytso@xxxxxxx> wrote:

> 
> On Jul 27, 2011, at 3:41 AM, NeilBrown wrote:
> 
> > 
> > 
> > Hi Ted and all,
> > 
> > I've been exploring RCU usage in the kernel looking for strange things, and
> > jbd2_dev_to_name looks particularly strange.  The following patch explains
> > and addresses the issues that I found.  Comments welcome.
> 
> Yeah its broken.  But I have patches pending for the merge window that solve
> it by nuking the function altogether; the problem is calling a function from
> TP_PRINTK causes perf to die on the spot, terminating its tracing.  :-(
> 

Sounds painful...

If it is about to go, that is good enough for me.

Thanks,
NeilBrown
--
To unsubscribe from this list: send the line "unsubscribe linux-ext4" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html


[Index of Archives]     [Reiser Filesystem Development]     [Ceph FS]     [Kernel Newbies]     [Security]     [Netfilter]     [Bugtraq]     [Linux FS]     [Yosemite National Park]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Samba]     [Device Mapper]     [Linux Media]

  Powered by Linux