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Subject[PATCH 3/5] btrfs: Use common error handling code in btrfs_update_root()
From
Date
From: Markus Elfring <elfring@users.sourceforge.net>
Date: Mon, 21 Aug 2017 13:10:15 +0200

Add a jump target so that a bit of exception handling can be better reused
at the end of this function.

This issue was detected by using the Coccinelle software.

Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
---
fs/btrfs/root-tree.c | 27 +++++++++++----------------
1 file changed, 11 insertions(+), 16 deletions(-)

diff --git a/fs/btrfs/root-tree.c b/fs/btrfs/root-tree.c
index 5b488af6f25e..bc497ba9d9d1 100644
--- a/fs/btrfs/root-tree.c
+++ b/fs/btrfs/root-tree.c
@@ -145,10 +145,8 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
return -ENOMEM;

ret = btrfs_search_slot(trans, root, key, path, 0, 1);
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;

if (ret != 0) {
btrfs_print_leaf(path->nodes[0]);
@@ -171,23 +169,17 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
btrfs_release_path(path);
ret = btrfs_search_slot(trans, root, key, path,
-1, 1);
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;

ret = btrfs_del_item(trans, root, path);
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;
btrfs_release_path(path);
ret = btrfs_insert_empty_item(trans, root, path,
key, sizeof(*item));
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;
l = path->nodes[0];
slot = path->slots[0];
ptr = btrfs_item_ptr_offset(l, slot);
@@ -204,6 +196,9 @@ int btrfs_update_root(struct btrfs_trans_handle *trans, struct btrfs_root
out:
btrfs_free_path(path);
return ret;
+abort_transaction:
+ btrfs_abort_transaction(trans, ret);
+ goto out;
}

int btrfs_insert_root(struct btrfs_trans_handle *trans, struct btrfs_root *root,
--
2.14.0
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