From 8e56338d7d0ee38ecae86d35dae43020356acca1 Mon Sep 17 00:00:00 2001 From: Wang Shilong Date: Tue, 7 Jan 2014 17:26:57 +0800 Subject: [PATCH] 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 Reviewed-by: Miao Xie Signed-off-by: Josef Bacik Signed-off-by: Chris Mason --- fs/btrfs/send.c | 29 ----------------------------- 1 file changed, 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 @@ -4775,35 +4775,6 @@ 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. -- 2.20.1