Btrfs: Add delayed iput

iput() can trigger new transactions if we are dropping the
final reference, so calling it in btrfs_commit_transaction
may end up deadlock. This patch adds delayed iput to avoid
the issue.

Signed-off-by: Yan Zheng <zheng.yan@oracle.com>
Signed-off-by: Chris Mason <chris.mason@oracle.com>

1 files changed, 4 insertions, 4 deletions

diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 4a86508ce473..fcdccfa46004 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -2880,9 +2880,9 @@ static noinline void flush_delalloc_async(struct btrfs_work *work)
         root = async->root;
         info = async->info;
 
-        btrfs_start_delalloc_inodes(root);
+        btrfs_start_delalloc_inodes(root, 0);
         wake_up(&info->flush_wait);
-        btrfs_wait_ordered_extents(root, 0);
+        btrfs_wait_ordered_extents(root, 0, 0);
 
         spin_lock(&info->lock);
         info->flushing = 0;
@@ -2956,8 +2956,8 @@ static void flush_delalloc(struct btrfs_root *root,
         return;
 
 flush:
-        btrfs_start_delalloc_inodes(root);
-        btrfs_wait_ordered_extents(root, 0);
+        btrfs_start_delalloc_inodes(root, 0);
+        btrfs_wait_ordered_extents(root, 0, 0);
 
         spin_lock(&info->lock);
         info->flushing = 0;