On Mon, Apr 10, 2017 at 11:45:08AM -0500, Zi Yan wrote: > > While this could be fixed with heavy locking, it's only necessary to > > make a copy of the PMD on the stack during change_pmd_range and avoid > > races. A new helper is created for this as the check if quite subtle and the > > existing similar helpful is not suitable. This passed 154 hours of testing > > (usually triggers between 20 minutes and 24 hours) without detecting bad > > PMDs or corruption. A basic test of an autonuma-intensive workload showed > > no significant change in behaviour. > > > > Signed-off-by: Mel Gorman <[email protected]> > > Cc: [email protected] > > Does this patch fix the same problem fixed by Kirill's patch here? > https://lkml.org/lkml/2017/3/2/347 >
I don't think so. The race I'm concerned with is due to locks not being held and is in a different path. -- Mel Gorman SUSE Labs
