linux-kernel - [PATCH 3.19 031/101] btrfs: simplify insert_orphan

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Message-Id: <20150417132515.756080507@linuxfoundation.org>
Date:	Fri, 17 Apr 2015 15:28:19 +0200
From:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:	linux-kernel@...r.kernel.org
Cc:	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	stable@...r.kernel.org, David Sterba <dsterba@...e.cz>,
	Chris Mason <clm@...com>, Roman Mamedov <rm@...anrm.net>
Subject: [PATCH 3.19 031/101] btrfs: simplify insert_orphan_item

3.19-stable review patch.  If anyone has any objections, please let me know.

------------------

From: David Sterba <dsterba@...e.cz>

commit 9c4f61f01d269815bb7c37be3ede59c5587747c6 upstream.

We can search and add the orphan item in one go,
btrfs_insert_orphan_item will find out if the item already exists.

Signed-off-by: David Sterba <dsterba@...e.cz>
Cc: Chris Mason <clm@...com>
Cc: Roman Mamedov <rm@...anrm.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>


---
 fs/btrfs/tree-log.c |   16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1266,21 +1266,13 @@ out:
 }
 
 static int insert_orphan_item(struct btrfs_trans_handle *trans,
-			      struct btrfs_root *root, u64 offset)
+			      struct btrfs_root *root, u64 ino)
 {
 	int ret;
-	struct btrfs_path *path;
 
-	path = btrfs_alloc_path();
-	if (!path)
-		return -ENOMEM;
-
-	ret = btrfs_find_item(root, path, BTRFS_ORPHAN_OBJECTID,
-			offset, BTRFS_ORPHAN_ITEM_KEY, NULL);
-	if (ret > 0)
-		ret = btrfs_insert_orphan_item(trans, root, offset);
-
-	btrfs_free_path(path);
+	ret = btrfs_insert_orphan_item(trans, root, ino);
+	if (ret == -EEXIST)
+		ret = 0;
 
 	return ret;
 }


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