Merge tag 'sound-4.6-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai...

[deliverable/linux.git] / fs / btrfs / backref.c

diff --git a/fs/btrfs/backref.c b/fs/btrfs/backref.c
index f6dac40f87ff5d4022559e6701b506589aad0353..80e8472d618b83f397baca30508aa76e69e652c6 100644 (file)
--- a/fs/btrfs/backref.c
+++ b/fs/btrfs/backref.c
@@ -148,8 +148,7 @@ int __init btrfs_prelim_ref_init(void)
 
 void btrfs_prelim_ref_exit(void)
 {
-       if (btrfs_prelim_ref_cache)
-               kmem_cache_destroy(btrfs_prelim_ref_cache);
+       kmem_cache_destroy(btrfs_prelim_ref_cache);
 }
 
 /*
@@ -566,17 +565,14 @@ static void __merge_refs(struct list_head *head, int mode)
                struct __prelim_ref *pos2 = pos1, *tmp;
 
                list_for_each_entry_safe_continue(pos2, tmp, head, list) {
-                       struct __prelim_ref *xchg, *ref1 = pos1, *ref2 = pos2;
+                       struct __prelim_ref *ref1 = pos1, *ref2 = pos2;
                        struct extent_inode_elem *eie;
 
                        if (!ref_for_same_block(ref1, ref2))
                                continue;
                        if (mode == 1) {
-                               if (!ref1->parent && ref2->parent) {
-                                       xchg = ref1;
-                                       ref1 = ref2;
-                                       ref2 = xchg;
-                               }
+                               if (!ref1->parent && ref2->parent)
+                                       swap(ref1, ref2);
                        } else {
                                if (ref1->parent != ref2->parent)
                                        continue;