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-rw-r--r--mm/mremap.c16
1 files changed, 7 insertions, 9 deletions
diff --git a/mm/mremap.c b/mm/mremap.c
index a7c93eceb1c8..f54a43fa4b79 100644
--- a/mm/mremap.c
+++ b/mm/mremap.c
@@ -276,6 +276,12 @@ static unsigned long move_vma(struct vm_area_struct *vma,
moved_len = move_page_tables(vma, old_addr, new_vma, new_addr, old_len,
need_rmap_locks);
if (moved_len < old_len) {
+ err = -ENOMEM;
+ } else if (vma->vm_file && vma->vm_file->f_op->mremap) {
+ err = vma->vm_file->f_op->mremap(vma->vm_file, new_vma);
+ }
+
+ if (unlikely(err)) {
/*
* On error, move entries back from new area to old,
* which will succeed since page tables still there,
@@ -286,16 +292,8 @@ static unsigned long move_vma(struct vm_area_struct *vma,
vma = new_vma;
old_len = new_len;
old_addr = new_addr;
- new_addr = -ENOMEM;
+ new_addr = err;
} else {
- if (vma->vm_file && vma->vm_file->f_op->mremap) {
- err = vma->vm_file->f_op->mremap(vma->vm_file, new_vma);
- if (err < 0) {
- move_page_tables(new_vma, new_addr, vma,
- old_addr, moved_len, true);
- return err;
- }
- }
arch_remap(mm, old_addr, old_addr + old_len,
new_addr, new_addr + new_len);
}