On 10/11/2013 20:35, Geyslan G. Bem wrote:
In add_inode_ref() function:
Initializes local pointers.
Reduces the logical condition with the __add_inode_ref() return
value by using only one 'goto out'.
Centralizes the exiting, ensuring the freeing of all used memory.
Signed-off-by: Geyslan G. Bem <geyslan@xxxxxxxxx>
---
fs/btrfs/tree-log.c | 33 +++++++++++++++++++--------------
1 file changed, 19 insertions(+), 14 deletions(-)
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 79f057c..61bb051 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -1113,11 +1113,11 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
struct extent_buffer *eb, int slot,
struct btrfs_key *key)
{
- struct inode *dir;
- struct inode *inode;
+ struct inode *dir = NULL;
+ struct inode *inode = NULL;
unsigned long ref_ptr;
unsigned long ref_end;
- char *name;
+ char *name = NULL;
int namelen;
int ret;
int search_done = 0;
@@ -1150,13 +1150,15 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
* care of the rest
*/
dir = read_one_inode(root, parent_objectid);
- if (!dir)
- return -ENOENT;
+ if (!dir) {
+ ret = -ENOENT;
+ goto out;
+ }
inode = read_one_inode(root, inode_objectid);
if (!inode) {
- iput(dir);
- return -EIO;
+ ret = -EIO;
+ goto out;
}
while (ref_ptr < ref_end) {
@@ -1169,14 +1171,16 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
*/
if (!dir)
dir = read_one_inode(root, parent_objectid);
- if (!dir)
- return -ENOENT;
+ if (!dir) {
+ ret = -ENOENT;
+ goto out;
+ }
} else {
ret = ref_get_fields(eb, ref_ptr, &namelen, &name,
&ref_index);
}
if (ret)
- return ret;
+ goto out;
/* if we already have a perfect match, we're done */
if (!inode_in_dir(root, path, btrfs_ino(dir), btrfs_ino(inode),
@@ -1196,12 +1200,11 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
parent_objectid,
ref_index, name, namelen,
&search_done);
- if (ret == 1) {
- ret = 0;
+ if (ret) {
+ if (ret == 1)
+ ret = 0;
goto out;
}
- if (ret)
- goto out;
}
/* insert our name */
@@ -1215,6 +1218,7 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
ref_ptr = (unsigned long)(ref_ptr + ref_struct_size) + namelen;
kfree(name);
+ name = NULL;
if (log_ref_ver) {
iput(dir);
dir = NULL;
@@ -1225,6 +1229,7 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
ret = overwrite_item(trans, root, path, eb, slot, key);
out:
btrfs_release_path(path);
+ kfree(name);
iput(dir);
iput(inode);
return ret;
The patch looks really good now. Thanks!
Reviewed-by: Stefan Behrens <sbehrens@xxxxxxxxxxxxxxxx>
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