[0/2] fix crash by reading /proc/diskstats

Message

Daniel Wagner Jan. 20, 2022, 10:52 a.m. UTC

During failover nvme-tcp tests in a HA setup a crash orccured. iostat
was running in the background while the test was executed.

I am not sure if the fix is correct. I am unsure if using
blk_queue_enter() is the right thing. But when starring at the code
snipped I saw in older version blk_queue_enter() was used but got
evenutally replaced by the rcu_read_lock() as far I understand at the
moment... So any tip here would be highly appreciated.

Daniel

Daniel Wagner (2):
  block: remove commented out code from diskstats_show
  block: hold queue lock while iterating in diskstats_show

 block/genhd.c | 11 +++--------
 1 file changed, 3 insertions(+), 8 deletions(-)