Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs

Pull btrfs fixes from Chris Mason:
 "I've split out the big send/receive update from my last pull request
  and now have just the fixes in my for-linus branch.  The send/recv
  branch will wander over to linux-next shortly though.

  The largest patches in this pull are Josef's patches to fix DIO
  locking problems and his patch to fix a crash during balance.  They
  are both well tested.

  The rest are smaller fixes that we've had queued.  The last rc came
  out while I was hacking new and exciting ways to recover from a
  misplaced rm -rf on my dev box, so these missed rc3."

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mason/linux-btrfs: (25 commits)
  Btrfs: fix that repair code is spuriously executed for transid failures
  Btrfs: fix ordered extent leak when failing to start a transaction
  Btrfs: fix a dio write regression
  Btrfs: fix deadlock with freeze and sync V2
  Btrfs: revert checksum error statistic which can cause a BUG()
  Btrfs: remove superblock writing after fatal error
  Btrfs: allow delayed refs to be merged
  Btrfs: fix enospc problems when deleting a subvol
  Btrfs: fix wrong mtime and ctime when creating snapshots
  Btrfs: fix race in run_clustered_refs
  Btrfs: don't run __tree_mod_log_free_eb on leaves
  Btrfs: increase the size of the free space cache
  Btrfs: barrier before waitqueue_active
  Btrfs: fix deadlock in wait_for_more_refs
  btrfs: fix second lock in btrfs_delete_delayed_items()
  Btrfs: don't allocate a seperate csums array for direct reads
  Btrfs: do not strdup non existent strings
  Btrfs: do not use missing devices when showing devname
  Btrfs: fix that error value is changed by mistake
  Btrfs: lock extents as we map them in DIO
  ...

1 files changed, 6 insertions, 6 deletions

diff --git a/fs/btrfs/delayed-inode.c b/fs/btrfs/delayed-inode.c
index 335605c8ceab..07d5eeb1e6f1 100644
--- a/fs/btrfs/delayed-inode.c
+++ b/fs/btrfs/delayed-inode.c
@@ -512,8 +512,8 @@ static void __btrfs_remove_delayed_item(struct btrfs_delayed_item *delayed_item)
 
         rb_erase(&delayed_item->rb_node, root);
         delayed_item->delayed_node->count--;
-        atomic_dec(&delayed_root->items);
-        if (atomic_read(&delayed_root->items) < BTRFS_DELAYED_BACKGROUND &&
+        if (atomic_dec_return(&delayed_root->items) <
+            BTRFS_DELAYED_BACKGROUND &&
             waitqueue_active(&delayed_root->wait))
                 wake_up(&delayed_root->wait);
 }
@@ -1028,9 +1028,10 @@ do_again:
                 btrfs_release_delayed_item(prev);
                 ret = 0;
                 btrfs_release_path(path);
-                if (curr)
+                if (curr) {
+                        mutex_unlock(&node->mutex);
                         goto do_again;
-                else
+                } else
                         goto delete_fail;
         }
 
@@ -1055,8 +1056,7 @@ static void btrfs_release_delayed_inode(struct btrfs_delayed_node *delayed_node)
                 delayed_node->count--;
 
                 delayed_root = delayed_node->root->fs_info->delayed_root;
-                atomic_dec(&delayed_root->items);
-                if (atomic_read(&delayed_root->items) <
+                if (atomic_dec_return(&delayed_root->items) <
                     BTRFS_DELAYED_BACKGROUND &&
                     waitqueue_active(&delayed_root->wait))
                         wake_up(&delayed_root->wait);