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Date: Mon, 21 Aug 2017 14:38:58 +0200
From: SF Markus Elfring <elfring@...rs.sourceforge.net>
To: linux-btrfs@...r.kernel.org, Chris Mason <clm@...com>,
David Sterba <dsterba@...e.com>, Josef Bacik <jbacik@...com>
Cc: LKML <linux-kernel@...r.kernel.org>,
kernel-janitors@...r.kernel.org
Subject: [PATCH 2/5] btrfs: Use common error handling code in
__btrfs_free_extent()
From: Markus Elfring <elfring@...rs.sourceforge.net>
Date: Mon, 21 Aug 2017 10:03:00 +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@...rs.sourceforge.net>
---
fs/btrfs/extent-tree.c | 69 ++++++++++++++++++++------------------------------
1 file changed, 27 insertions(+), 42 deletions(-)
diff --git a/fs/btrfs/extent-tree.c b/fs/btrfs/extent-tree.c
index 116c5615d6c2..c6b7aca88491 100644
--- a/fs/btrfs/extent-tree.c
+++ b/fs/btrfs/extent-tree.c
@@ -6913,10 +6913,9 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret = remove_extent_backref(trans, info, path, NULL,
refs_to_drop,
is_data, &last_ref);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
+
btrfs_release_path(path);
path->leave_spinning = 1;
@@ -6962,10 +6961,9 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
if (ret > 0)
btrfs_print_leaf(path->nodes[0]);
}
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;
+
extent_slot = path->slots[0];
}
} else if (WARN_ON(ret == -ENOENT)) {
@@ -6974,11 +6972,9 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
"unable to find ref byte nr %llu parent %llu root %llu owner %llu offset %llu",
bytenr, parent, root_objectid, owner_objectid,
owner_offset);
- btrfs_abort_transaction(trans, ret);
- goto out;
+ goto abort_transaction;
} else {
- btrfs_abort_transaction(trans, ret);
- goto out;
+ goto abort_transaction;
}
leaf = path->nodes[0];
@@ -6988,10 +6984,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
BUG_ON(found_extent || extent_slot != path->slots[0]);
ret = convert_extent_item_v0(trans, info, path, owner_objectid,
0);
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;
btrfs_release_path(path);
path->leave_spinning = 1;
@@ -7008,10 +7002,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret, bytenr);
btrfs_print_leaf(path->nodes[0]);
}
- if (ret < 0) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret < 0)
+ goto abort_transaction;
extent_slot = path->slots[0];
leaf = path->nodes[0];
@@ -7035,8 +7027,7 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
"trying to drop %d refs but we only have %Lu for bytenr %Lu",
refs_to_drop, refs, bytenr);
ret = -EINVAL;
- btrfs_abort_transaction(trans, ret);
- goto out;
+ goto abort_transaction;
}
refs -= refs_to_drop;
@@ -7057,10 +7048,8 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
ret = remove_extent_backref(trans, info, path,
iref, refs_to_drop,
is_data, &last_ref);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
}
} else {
if (found_extent) {
@@ -7078,37 +7067,33 @@ static int __btrfs_free_extent(struct btrfs_trans_handle *trans,
last_ref = 1;
ret = btrfs_del_items(trans, extent_root, path, path->slots[0],
num_to_del);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
+
btrfs_release_path(path);
if (is_data) {
ret = btrfs_del_csums(trans, info, bytenr, num_bytes);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
}
ret = add_to_free_space_tree(trans, info, bytenr, num_bytes);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
ret = update_block_group(trans, info, bytenr, num_bytes, 0);
- if (ret) {
- btrfs_abort_transaction(trans, ret);
- goto out;
- }
+ if (ret)
+ goto abort_transaction;
}
btrfs_release_path(path);
out:
btrfs_free_path(path);
return ret;
+abort_transaction:
+ btrfs_abort_transaction(trans, ret);
+ goto out;
}
/*
--
2.14.0
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