Btrfs: remove unnecessary transaction commit before send

We will finish orphan cleanups during snapshot, so we don't
have to commit transaction here.

Signed-off-by: Wang Shilong <wangsl.fnst@cn.fujitsu.com>
Reviewed-by: Miao Xie <miaox@cn.fujitsu.com>
Signed-off-by: Josef Bacik <jbacik@fb.com>
Signed-off-by: Chris Mason <clm@fb.com>

1 files changed, 0 insertions, 29 deletions

diff --git a/fs/btrfs/send.c b/fs/btrfs/send.c
index 4e2461b857f3..591063dac0e6 100644
--- a/fs/btrfs/send.c
+++ b/fs/btrfs/send.c
@@ -4776,35 +4776,6 @@ long btrfs_ioctl_send(struct file *mnt_file, void __user *arg_)
         WARN_ON(send_root->orphan_cleanup_state != ORPHAN_CLEANUP_DONE);
 
         /*
-         * If we just created this root we need to make sure that the orphan
-         * cleanup has been done and committed since we search the commit root,
-         * so check its commit root transid with our otransid and if they match
-         * commit the transaction to make sure everything is updated.
-         */
-        down_read(&send_root->fs_info->extent_commit_sem);
-        if (btrfs_header_generation(send_root->commit_root) ==
-            btrfs_root_otransid(&send_root->root_item)) {
-                struct btrfs_trans_handle *trans;
-
-                up_read(&send_root->fs_info->extent_commit_sem);
-
-                trans = btrfs_attach_transaction_barrier(send_root);
-                if (IS_ERR(trans)) {
-                        if (PTR_ERR(trans) != -ENOENT) {
-                                ret = PTR_ERR(trans);
-                                goto out;
-                        }
-                        /* ENOENT means theres no transaction */
-                } else {
-                        ret = btrfs_commit_transaction(trans, send_root);
-                        if (ret)
-                                goto out;
-                }
-        } else {
-                up_read(&send_root->fs_info->extent_commit_sem);
-        }
-
-        /*
          * Userspace tools do the checks and warn the user if it's
          * not RO.
          */