On 05/16/2017 08:42 PM, Thomas Gleixner wrote: > To enable smp_processor_id() and might_sleep() debug checks earlier, it's > required to add system states between SYSTEM_BOOTING and SYSTEM_RUNNING. > > Adjust the system_state check in kswapd_run() to handle the extra states. > > Signed-off-by: Thomas Gleixner <[email protected]> > Reviewed-by: Steven Rostedt (VMware) <[email protected]> > Cc: Andrew Morton <[email protected]> > Cc: Johannes Weiner <[email protected]> > Cc: Mel Gorman <[email protected]> > Cc: Michal Hocko <[email protected]> > Cc: Vlastimil Babka <[email protected]> > Cc: [email protected]
Acked-by: Vlastimil Babka <[email protected]> > --- > mm/vmscan.c | 2 +- > 1 file changed, 1 insertion(+), 1 deletion(-) > > --- a/mm/vmscan.c > +++ b/mm/vmscan.c > @@ -3643,7 +3643,7 @@ int kswapd_run(int nid) > pgdat->kswapd = kthread_run(kswapd, pgdat, "kswapd%d", nid); > if (IS_ERR(pgdat->kswapd)) { > /* failure at boot is fatal */ > - BUG_ON(system_state == SYSTEM_BOOTING); > + BUG_ON(system_state < SYSTEM_RUNNING); > pr_err("Failed to start kswapd on node %d\n", nid); > ret = PTR_ERR(pgdat->kswapd); > pgdat->kswapd = NULL; > >
