On Mon, Apr 12, 2021 at 11:58:57AM +0800, Wen Yang wrote:
From: Hugh Dickins hughd@google.com
commit a66c0410b97c07a5708881198528ce724f7a3226 upstream.
The other pagetable walks in task_mmu.c have a cond_resched() after walking their ptes: add a cond_resched() in gather_pte_stats() too, for reading /proc/<id>/numa_maps. Only pagemap_pmd_range() has a cond_resched() in its (unusually expensive) pmd_trans_huge case: more should probably be added, but leave them unchanged for now.
Link: http://lkml.kernel.org/r/alpine.LSU.2.11.1612052157400.13021@eggly.anvils Signed-off-by: Hugh Dickins hughd@google.com Acked-by: Michal Hocko mhocko@suse.com Cc: David Rientjes rientjes@google.com Cc: Gerald Schaefer gerald.schaefer@de.ibm.com Signed-off-by: Andrew Morton akpm@linux-foundation.org Signed-off-by: Linus Torvalds torvalds@linux-foundation.org Cc: stable@vger.kernel.org # 4.9.x Reported-by: Chen si cici.cs@alibaba-inc.com Signed-off-by: Baoyou Xie baoyou.xie@aliyun.com Signed-off-by: Wen Yang wenyang@linux.alibaba.com Signed-off-by: Zijiang Huang zijiang.hzj@alibaba-inc.com
fs/proc/task_mmu.c | 1 + 1 file changed, 1 insertion(+)
Now queued up, thanks.
greg k-h