diff options
| -rw-r--r-- | mm/memory-failure.c | 2 | ||||
| -rw-r--r-- | mm/rmap.c | 1 | ||||
| -rw-r--r-- | mm/swap_state.c | 6 | ||||
| -rw-r--r-- | mm/swapfile.c | 2 |
4 files changed, 11 insertions, 0 deletions
diff --git a/mm/memory-failure.c b/mm/memory-failure.c index 2323a8039a98..6a283cc9317c 100644 --- a/mm/memory-failure.c +++ b/mm/memory-failure.c @@ -386,6 +386,8 @@ static void collect_procs_anon(struct page *page, struct list_head *to_kill, struct task_struct *tsk; struct anon_vma *av; + if (unlikely(split_huge_page(page))) + return; read_lock(&tasklist_lock); av = page_lock_anon_vma(page); if (av == NULL) /* Not actually mapped anymore */ diff --git a/mm/rmap.c b/mm/rmap.c index c95d2ba27a0b..a3197a8a295b 100644 --- a/mm/rmap.c +++ b/mm/rmap.c @@ -1400,6 +1400,7 @@ int try_to_unmap(struct page *page, enum ttu_flags flags) int ret; BUG_ON(!PageLocked(page)); + BUG_ON(PageTransHuge(page)); if (unlikely(PageKsm(page))) ret = try_to_unmap_ksm(page, flags); diff --git a/mm/swap_state.c b/mm/swap_state.c index e10f5833167f..5c8cfabbc9bc 100644 --- a/mm/swap_state.c +++ b/mm/swap_state.c @@ -157,6 +157,12 @@ int add_to_swap(struct page *page) if (!entry.val) return 0; + if (unlikely(PageTransHuge(page))) + if (unlikely(split_huge_page(page))) { + swapcache_free(entry, NULL); + return 0; + } + /* * Radix-tree node allocations from PF_MEMALLOC contexts could * completely exhaust the page allocator. __GFP_NOMEMALLOC diff --git a/mm/swapfile.c b/mm/swapfile.c index b6adcfbf6f48..07a458d72fa8 100644 --- a/mm/swapfile.c +++ b/mm/swapfile.c @@ -964,6 +964,8 @@ static inline int unuse_pmd_range(struct vm_area_struct *vma, pud_t *pud, pmd = pmd_offset(pud, addr); do { next = pmd_addr_end(addr, end); + if (unlikely(pmd_trans_huge(*pmd))) + continue; if (pmd_none_or_clear_bad(pmd)) continue; ret = unuse_pte_range(vma, pmd, addr, next, entry, page); |