diff options
Diffstat (limited to 'mm/mmap.c')
| -rw-r--r-- | mm/mmap.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/mm/mmap.c b/mm/mmap.c index 2b7d9e78a569..f54b235f29a9 100644 --- a/mm/mmap.c +++ b/mm/mmap.c @@ -736,7 +736,7 @@ again: remove_next = 1 + (end > next->vm_end); if (anon_vma) { VM_BUG_ON(adjust_next && next->anon_vma && anon_vma != next->anon_vma); - anon_vma_lock(anon_vma); + anon_vma_lock_write(anon_vma); anon_vma_interval_tree_pre_update_vma(vma); if (adjust_next) anon_vma_interval_tree_pre_update_vma(next); @@ -2886,15 +2886,15 @@ static void vm_lock_anon_vma(struct mm_struct *mm, struct anon_vma *anon_vma) * The LSB of head.next can't change from under us * because we hold the mm_all_locks_mutex. */ - mutex_lock_nest_lock(&anon_vma->root->mutex, &mm->mmap_sem); + down_write(&anon_vma->root->rwsem); /* * We can safely modify head.next after taking the - * anon_vma->root->mutex. If some other vma in this mm shares + * anon_vma->root->rwsem. If some other vma in this mm shares * the same anon_vma we won't take it again. * * No need of atomic instructions here, head.next * can't change from under us thanks to the - * anon_vma->root->mutex. + * anon_vma->root->rwsem. */ if (__test_and_set_bit(0, (unsigned long *) &anon_vma->root->rb_root.rb_node)) @@ -2996,7 +2996,7 @@ static void vm_unlock_anon_vma(struct anon_vma *anon_vma) * * No need of atomic instructions here, head.next * can't change from under us until we release the - * anon_vma->root->mutex. + * anon_vma->root->rwsem. */ if (!__test_and_clear_bit(0, (unsigned long *) &anon_vma->root->rb_root.rb_node)) |