diff options
| -rw-r--r-- | mm/khugepaged.c | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/mm/khugepaged.c b/mm/khugepaged.c index 28a843f30b32b..a4b97ec8ce56c 100644 --- a/mm/khugepaged.c +++ b/mm/khugepaged.c @@ -437,13 +437,16 @@ void __khugepaged_enter(struct mm_struct *mm) /* __khugepaged_exit() must not run from under us */ VM_BUG_ON_MM(collapse_test_exit(mm), mm); - if (unlikely(mm_flags_test_and_set(MMF_VM_HUGEPAGE, mm))) - return; slot = mm_slot_alloc(mm_slot_cache); if (!slot) return; + if (unlikely(mm_flags_test_and_set(MMF_VM_HUGEPAGE, mm))) { + mm_slot_free(mm_slot_cache, slot); + return; + } + spin_lock(&khugepaged_mm_lock); mm_slot_insert(mm_slots_hash, mm, slot); /* |