On Wed, Nov 06, 2013 at 07:14:44PM +0800, Hong Zhiguo wrote: > From: Hong Zhiguo <zhiguoh...@tencent.com> > > Update of blkg_stat and blkg_rwstat may happen in bh context. > While u64_stats_fetch_retry is only preempt_disable on 32bit > UP system. This is not enough to avoid preemption by bh and > may read strange 64 bit value. > > Signed-off-by: Hong Zhiguo <zhiguoh...@tencent.com>
Acked-by: Tejun Heo <t...@kernel.org> Jens, can you please pick this one up? This probably needs to be tagged for stable too. Thanks! -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
