btrfs: fix iterator with update error in backref.c

Fix the following error:

fs/btrfs/backref.c:565:1-20: iterator with update on line 577

Fixes: a7ca422('btrfs: use list_for_each_entry* in backref.c')
Signed-off-by: Geliang Tang <geliangtang@163.com>
Signed-off-by: David Sterba <dsterba@suse.com>
This commit is contained in:
Geliang Tang 2016-01-13 22:08:01 +08:00 коммит произвёл David Sterba
Родитель 95617d6932
Коммит 8e217858ee
1 изменённых файлов: 5 добавлений и 5 удалений

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@ -560,13 +560,13 @@ static int __add_missing_keys(struct btrfs_fs_info *fs_info,
*/
static void __merge_refs(struct list_head *head, int mode)
{
struct __prelim_ref *ref1;
struct __prelim_ref *pos1;
list_for_each_entry(ref1, head, list) {
struct __prelim_ref *ref2 = ref1, *tmp;
list_for_each_entry(pos1, head, list) {
struct __prelim_ref *pos2 = pos1, *tmp;
list_for_each_entry_safe_continue(ref2, tmp, head, list) {
struct __prelim_ref *xchg;
list_for_each_entry_safe_continue(pos2, tmp, head, list) {
struct __prelim_ref *xchg, *ref1 = pos1, *ref2 = pos2;
struct extent_inode_elem *eie;
if (!ref_for_same_block(ref1, ref2))