[PATCH 4.9 006/109] mm, oom_reaper: gather each vma to prevent leaking TLB entry

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Wang Nan commit 687cb0884a714ff484d038e9190edc874edcf146 upstream. tlb_gather_mmu(, mm, 0, -1) means gathering the whole virtual memory space. In this case, tlb->fullmm

[PATCH 4.9 006/109] mm, oom_reaper: gather each vma to prevent leaking TLB entry

4.9-stable review patch. If anyone has any objections, please let me know. -- From: Wang Nan commit 687cb0884a714ff484d038e9190edc874edcf146 upstream. tlb_gather_mmu(, mm, 0, -1) means gathering the whole virtual memory space. In this case, tlb->fullmm is true. Some archs