diff options
| -rw-r--r-- | mm/mmap.c | 16 |
1 files changed, 0 insertions, 16 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 7bb64381e77c..f901065c4c64 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -2973,16 +2973,6 @@ out: return ret; } -static inline void verify_mm_writelocked(struct mm_struct *mm) -{ -#ifdef CONFIG_DEBUG_VM - if (unlikely(down_read_trylock(&mm->mmap_sem))) { - WARN_ON(1); - up_read(&mm->mmap_sem); - } -#endif -} - /* * this is really a simplified "do_mmap". it only handles * anonymous maps. eventually we may be able to do some @@ -3010,12 +3000,6 @@ static int do_brk_flags(unsigned long addr, unsigned long len, unsigned long fla return error; /* - * mm->mmap_sem is required to protect against another thread - * changing the mappings in case we sleep. - */ - verify_mm_writelocked(mm); - - /* * Clear old maps. this also does some error checking for us */ while (find_vma_links(mm, addr, addr + len, &prev, &rb_link, |