On 11/6/18 5:21 PM, Arun KS wrote: > totalram_pages, zone->managed_pages and totalhigh_pages updates > are protected by managed_page_count_lock, but readers never care > about it. Convert these variables to atomic to avoid readers > potentially seeing a store tear. > > This patch converts zone->managed_pages. Subsequent patches will > convert totalram_panges, totalhigh_pages and eventually > managed_page_count_lock will be removed. > > Suggested-by: Michal Hocko <mhocko@xxxxxxxx> > Suggested-by: Vlastimil Babka <vbabka@xxxxxxx> > Signed-off-by: Arun KS <arunks@xxxxxxxxxxxxxx> > Reviewed-by: Konstantin Khlebnikov <khlebnikov@xxxxxxxxxxxxxx> > Acked-by: Michal Hocko <mhocko@xxxxxxxx> Acked-by: Vlastimil Babka <vbabka@xxxxxxx>
