Commit 2c575026 authored by Committed by Jens AxboeBrowse files
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 <firstname.lastname@example.org> Acked-by: Tejun Heo <email@example.com> Cc: firstname.lastname@example.org Signed-off-by: Jens Axboe <email@example.com>