Move VMA flag modification (which now implies VMA locking) before
anon_vma_lock_write to match the locking order of page fault handler.
Signed-off-by: Suren Baghdasaryan <surenb@xxxxxxxxxx>
---
mm/mmap.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/mm/mmap.c b/mm/mmap.c
index fa994ae903d9..53d885e70a54 100644
--- a/mm/mmap.c
+++ b/mm/mmap.c
@@ -2953,13 +2953,13 @@ static int do_brk_flags(struct ma_state *mas, struct vm_area_struct *vma,
if (mas_preallocate(mas, vma, GFP_KERNEL))
goto unacct_fail;
+ set_vm_flags(vma, VM_SOFTDIRTY);
vma_adjust_trans_huge(vma, vma->vm_start, addr + len, 0);
if (vma->anon_vma) {
anon_vma_lock_write(vma->anon_vma);
anon_vma_interval_tree_pre_update_vma(vma);
}
vma->vm_end = addr + len;
- set_vm_flags(vma, VM_SOFTDIRTY);
mas_store_prealloc(mas, vma);
if (vma->anon_vma) {
--
2.39.0
