On 11/13/2017 02:50 PM, Kirill Tkhai wrote: > When split_huge_page_to_list() fails, and a huge page is going back > to LRU, the number of isolated pages is decreasing. So we must > subtract HPAGE_PMD_NR from NR_ISOLATED_ANON counter, not to add it. > > Otherwise, we may bumped into a situation, when number of isolated > pages grows up to number of inactive pages, and direct reclaim hangs in: > > shrink_inactive_list() > while (too_many_isolated()) > congestion_wait(BLK_RW_ASYNC, HZ/10), > > waiting for the counter becomes less. But it has no a chance > to finish, and hangs forever. Fix that. > > https://jira.sw.ru/browse/PSBM-76970 > > Signed-off-by: Kirill Tkhai <ktk...@virtuozzo.com>
Acked-by: Andrey Ryabinin <aryabi...@virtuozzo.com> _______________________________________________ Devel mailing list Devel@openvz.org https://lists.openvz.org/mailman/listinfo/devel
