From: Chris Mason <chris.mason@oracle.com>
Date: Sun, 22 May 2011 11:07:01 +0000 (-0400)
Subject: Merge branch 'delayed_inode' into inode_numbers
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=dcc6d073225b6b732a52477c91bd4edc9b4d5502;p=GitHub%2FLineageOS%2Fandroid_kernel_motorola_exynos9610.git

Merge branch 'delayed_inode' into inode_numbers

Conflicts:
	fs/btrfs/inode.c
	fs/btrfs/ioctl.c
	fs/btrfs/transaction.c

Signed-off-by: Chris Mason <chris.mason@oracle.com>
---

dcc6d073225b6b732a52477c91bd4edc9b4d5502
diff --cc fs/btrfs/inode.c
index 01438e9ba2e2,3470f67c6258..6cef48572e9e
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@@ -2659,11 -2647,26 +2659,26 @@@ noinline int btrfs_update_inode(struct 
  	struct extent_buffer *leaf;
  	int ret;
  
+ 	/*
+ 	 * If root is tree root, it means this inode is used to
+ 	 * store free space information. And these inodes are updated
+ 	 * when committing the transaction, so they needn't delaye to
+ 	 * be updated, or deadlock will occured.
+ 	 */
 -	if (likely(root != root->fs_info->tree_root)) {
++	if (!is_free_space_inode(root, inode)) {
+ 		ret = btrfs_delayed_update_inode(trans, root, inode);
+ 		if (!ret)
+ 			btrfs_set_inode_last_trans(trans, inode);
+ 		return ret;
+ 	}
+ 
  	path = btrfs_alloc_path();
- 	BUG_ON(!path);
+ 	if (!path)
+ 		return -ENOMEM;
+ 
  	path->leave_spinning = 1;
- 	ret = btrfs_lookup_inode(trans, root, path,
- 				 &BTRFS_I(inode)->location, 1);
+ 	ret = btrfs_lookup_inode(trans, root, path, &BTRFS_I(inode)->location,
+ 				 1);
  	if (ret) {
  		if (ret > 0)
  			ret = -ENOENT;
@@@ -2737,21 -2738,12 +2751,12 @@@ static int __btrfs_unlink_inode(struct 
  		goto err;
  	}
  
- 	di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino,
- 					 index, name, name_len, -1);
- 	if (IS_ERR(di)) {
- 		ret = PTR_ERR(di);
- 		goto err;
- 	}
- 	if (!di) {
- 		ret = -ENOENT;
+ 	ret = btrfs_delete_delayed_dir_index(trans, root, dir, index);
+ 	if (ret)
  		goto err;
- 	}
- 	ret = btrfs_delete_one_dir_name(trans, root, path, di);
- 	btrfs_release_path(root, path);
  
  	ret = btrfs_del_inode_ref_in_log(trans, root, name, name_len,
 -					 inode, dir->i_ino);
 +					 inode, dir_ino);
  	BUG_ON(ret != 0 && ret != -ENOENT);
  
  	ret = btrfs_del_dir_entries_in_log(trans, root, name, name_len,
@@@ -2939,7 -2929,15 +2944,15 @@@ static struct btrfs_trans_handle *__unl
  	index = btrfs_inode_ref_index(path->nodes[0], ref);
  	btrfs_release_path(root, path);
  
+ 	/*
+ 	 * This is a commit root search, if we can lookup inode item and other
+ 	 * relative items in the commit root, it means the transaction of
+ 	 * dir/file creation has been committed, and the dir index item that we
+ 	 * delay to insert has also been inserted into the commit root. So
+ 	 * we needn't worry about the delayed insertion of the dir index item
+ 	 * here.
+ 	 */
 -	di = btrfs_lookup_dir_index_item(trans, root, path, dir->i_ino, index,
 +	di = btrfs_lookup_dir_index_item(trans, root, path, dir_ino, index,
  				dentry->d_name.name, dentry->d_name.len, 0);
  	if (IS_ERR(di)) {
  		err = PTR_ERR(di);
@@@ -4280,11 -4275,19 +4297,19 @@@ static int btrfs_real_readdir(struct fi
  		filp->f_pos = 2;
  	}
  	path = btrfs_alloc_path();
+ 	if (!path)
+ 		return -ENOMEM;
  	path->reada = 2;
  
+ 	if (key_type == BTRFS_DIR_INDEX_KEY) {
+ 		INIT_LIST_HEAD(&ins_list);
+ 		INIT_LIST_HEAD(&del_list);
+ 		btrfs_get_delayed_items(inode, &ins_list, &del_list);
+ 	}
+ 
  	btrfs_set_key_type(&key, key_type);
  	key.offset = filp->f_pos;
 -	key.objectid = inode->i_ino;
 +	key.objectid = btrfs_ino(inode);
  
  	ret = btrfs_search_slot(NULL, root, &key, path, 0, 0);
  	if (ret < 0)