diff options
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/hugetlb.c | 25 | ||||
| -rw-r--r-- | mm/madvise.c | 8 | ||||
| -rw-r--r-- | mm/memory.c | 8 | ||||
| -rw-r--r-- | mm/oom_kill.c | 4 |
4 files changed, 22 insertions, 23 deletions
diff --git a/mm/hugetlb.c b/mm/hugetlb.c index afa057a1d3f..b8ce6f45095 100644 --- a/mm/hugetlb.c +++ b/mm/hugetlb.c @@ -2331,16 +2331,23 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, if (huge_pmd_unshare(mm, &address, ptep)) continue; + pte = huge_ptep_get(ptep); + if (huge_pte_none(pte)) + continue; + + /* + * HWPoisoned hugepage is already unmapped and dropped reference + */ + if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) + continue; + + page = pte_page(pte); /* * If a reference page is supplied, it is because a specific * page is being unmapped, not a range. Ensure the page we * are about to unmap is the actual page of interest. */ if (ref_page) { - pte = huge_ptep_get(ptep); - if (huge_pte_none(pte)) - continue; - page = pte_page(pte); if (page != ref_page) continue; @@ -2353,16 +2360,6 @@ void __unmap_hugepage_range(struct vm_area_struct *vma, unsigned long start, } pte = huge_ptep_get_and_clear(mm, address, ptep); - if (huge_pte_none(pte)) - continue; - - /* - * HWPoisoned hugepage is already unmapped and dropped reference - */ - if (unlikely(is_hugetlb_entry_hwpoisoned(pte))) - continue; - - page = pte_page(pte); if (pte_dirty(pte)) set_page_dirty(page); list_add(&page->lru, &page_list); diff --git a/mm/madvise.c b/mm/madvise.c index f5ab745672b..1ccbba5b667 100644 --- a/mm/madvise.c +++ b/mm/madvise.c @@ -65,6 +65,12 @@ static long madvise_behavior(struct vm_area_struct * vma, } new_flags &= ~VM_DONTCOPY; break; + case MADV_DONTDUMP: + new_flags |= VM_NODUMP; + break; + case MADV_DODUMP: + new_flags &= ~VM_NODUMP; + break; case MADV_MERGEABLE: case MADV_UNMERGEABLE: error = ksm_madvise(vma, start, end, behavior, &new_flags); @@ -293,6 +299,8 @@ madvise_behavior_valid(int behavior) case MADV_HUGEPAGE: case MADV_NOHUGEPAGE: #endif + case MADV_DONTDUMP: + case MADV_DODUMP: return 1; default: diff --git a/mm/memory.c b/mm/memory.c index 3416b6e018d..6105f475fa8 100644 --- a/mm/memory.c +++ b/mm/memory.c @@ -3623,13 +3623,7 @@ static int __init gate_vma_init(void) gate_vma.vm_end = FIXADDR_USER_END; gate_vma.vm_flags = VM_READ | VM_MAYREAD | VM_EXEC | VM_MAYEXEC; gate_vma.vm_page_prot = __P101; - /* - * Make sure the vDSO gets into every core dump. - * Dumping its contents makes post-mortem fully interpretable later - * without matching up the same kernel and hardware config to see - * what PC values meant. - */ - gate_vma.vm_flags |= VM_ALWAYSDUMP; + return 0; } __initcall(gate_vma_init); diff --git a/mm/oom_kill.c b/mm/oom_kill.c index 4198e000f41..46bf2ed5594 100644 --- a/mm/oom_kill.c +++ b/mm/oom_kill.c @@ -521,11 +521,11 @@ static void oom_kill_process(struct task_struct *p, gfp_t gfp_mask, int order, pr_err("Kill process %d (%s) sharing same memory\n", task_pid_nr(p), p->comm); task_unlock(p); - force_sig(SIGKILL, p); + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, p, true); } set_tsk_thread_flag(victim, TIF_MEMDIE); - force_sig(SIGKILL, victim); + do_send_sig_info(SIGKILL, SEND_SIG_FORCED, victim, true); } #undef K |