linux-kernel - [PATCH 3.16.y-ckt 082/144] btrfs: simplify insert_orphan

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Message-Id: <1429630329-21748-83-git-send-email-luis.henriques@canonical.com>
Date:	Tue, 21 Apr 2015 16:31:07 +0100
From:	Luis Henriques <luis.henriques@...onical.com>
To:	linux-kernel@...r.kernel.org, stable@...r.kernel.org,
	kernel-team@...ts.ubuntu.com
Cc:	David Sterba <dsterba@...e.cz>, Chris Mason <clm@...com>,
	Luis Henriques <luis.henriques@...onical.com>
Subject: [PATCH 3.16.y-ckt 082/144] btrfs: simplify insert_orphan_item

3.16.7-ckt10 -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>
Signed-off-by: Luis Henriques <luis.henriques@...onical.com>
---
 fs/btrfs/tree-log.c | 16 ++++------------
 1 file changed, 4 insertions(+), 12 deletions(-)

diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 0a8194955e6b..700e6d860e0c 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1263,21 +1263,13 @@ 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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