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-rw-r--r--kernel/fork.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/kernel/fork.c b/kernel/fork.c
index 876b31cd822..a28d11e1087 100644
--- a/kernel/fork.c
+++ b/kernel/fork.c
@@ -250,8 +250,9 @@ static inline int dup_mmap(struct mm_struct * mm, struct mm_struct * oldmm)
/*
* Link in the new vma and copy the page table entries:
- * link in first so that swapoff can see swap entries,
- * and try_to_unmap_one's find_vma find the new vma.
+ * link in first so that swapoff can see swap entries.
+ * Note that, exceptionally, here the vma is inserted
+ * without holding mm->mmap_sem.
*/
spin_lock(&mm->page_table_lock);
*pprev = tmp;