[PATCH 5.15 46/73] btrfs: remove root argument from btrfs_unlink_inode()

Greg Kroah-Hartman
2022-09-02T13:47:34Z

From: Filipe Manana <fdmanana@suse.com>

[ Upstream commit 4467af8809299c12529b5c21481c1d44a3b209f9 ]

The root argument passed to btrfs_unlink_inode() and its callee,
__btrfs_unlink_inode(), always matches the root of the given directory and
the given inode. So remove the argument and make __btrfs_unlink_inode()
use the root of the directory.

Signed-off-by: Filipe Manana <fdmanana@suse.com>
Reviewed-by: David Sterba <dsterba@suse.com>
Signed-off-by: David Sterba <dsterba@suse.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
fs/btrfs/ctree.h | 1 -
fs/btrfs/inode.c | 25 +++++++++++--------------
fs/btrfs/tree-log.c | 14 +++++++-------
3 files changed, 18 insertions(+), 22 deletions(-)

diff --git a/fs/btrfs/ctree.h b/fs/btrfs/ctree.h
index 1831135fef1ab..cd72570d11f65 100644
--- a/fs/btrfs/ctree.h
+++ b/fs/btrfs/ctree.h
@@ -3166,7 +3166,6 @@ void __btrfs_del_delalloc_inode(struct btrfs_root *root,
struct inode *btrfs_lookup_dentry(struct inode *dir, struct dentry *dentry);
int btrfs_set_inode_index(struct btrfs_inode *dir, u64 *index);
int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
struct btrfs_inode *dir, struct btrfs_inode *inode,
const char *name, int name_len);
int btrfs_add_link(struct btrfs_trans_handle *trans,
diff --git a/fs/btrfs/inode.c b/fs/btrfs/inode.c
index 428a56f248bba..f8a01964a2169 100644
--- a/fs/btrfs/inode.c
+++ b/fs/btrfs/inode.c
@@ -4097,11 +4097,11 @@ int btrfs_update_inode_fallback(struct btrfs_trans_handle *trans,
* also drops the back refs in the inode to the directory
*/
static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
struct btrfs_inode *dir,
struct btrfs_inode *inode,
const char *name, int name_len)
{
+ struct btrfs_root *root = dir->root;
struct btrfs_fs_info *fs_info = root->fs_info;
struct btrfs_path *path;
int ret = 0;
@@ -4201,15 +4201,14 @@ static int __btrfs_unlink_inode(struct btrfs_trans_handle *trans,
}

int btrfs_unlink_inode(struct btrfs_trans_handle *trans,
- struct btrfs_root *root,
struct btrfs_inode *dir, struct btrfs_inode *inode,
const char *name, int name_len)
{
int ret;
- ret = __btrfs_unlink_inode(trans, root, dir, inode, name, name_len);
+ ret = __btrfs_unlink_inode(trans, dir, inode, name, name_len);
if (!ret) {
drop_nlink(&inode->vfs_inode);
- ret = btrfs_update_inode(trans, root, inode);
+ ret = btrfs_update_inode(trans, inode->root, inode);
}
return ret;
}
@@ -4238,7 +4237,6 @@ static struct btrfs_trans_handle *__unlink_start_trans(struct inode *dir)

static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
{
- struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_trans_handle *trans;
struct inode *inode = d_inode(dentry);
int ret;
@@ -4250,7 +4248,7 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)
btrfs_record_unlink_dir(trans, BTRFS_I(dir), BTRFS_I(d_inode(dentry)),
0);

- ret = btrfs_unlink_inode(trans, root, BTRFS_I(dir),
+ ret = btrfs_unlink_inode(trans, BTRFS_I(dir),
BTRFS_I(d_inode(dentry)), dentry->d_name.name,
dentry->d_name.len);
if (ret)
@@ -4264,7 +4262,7 @@ static int btrfs_unlink(struct inode *dir, struct dentry *dentry)

out:
btrfs_end_transaction(trans);
- btrfs_btree_balance_dirty(root->fs_info);
+ btrfs_btree_balance_dirty(BTRFS_I(dir)->root->fs_info);
return ret;
}

@@ -4622,7 +4620,6 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
{
struct inode *inode = d_inode(dentry);
int err = 0;
- struct btrfs_root *root = BTRFS_I(dir)->root;
struct btrfs_trans_handle *trans;
u64 last_unlink_trans;

@@ -4647,7 +4644,7 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
last_unlink_trans = BTRFS_I(inode)->last_unlink_trans;

/* now the directory is empty */
- err = btrfs_unlink_inode(trans, root, BTRFS_I(dir),
+ err = btrfs_unlink_inode(trans, BTRFS_I(dir),
BTRFS_I(d_inode(dentry)), dentry->d_name.name,
dentry->d_name.len);
if (!err) {
@@ -4668,7 +4665,7 @@ static int btrfs_rmdir(struct inode *dir, struct dentry *dentry)
}
out:
btrfs_end_transaction(trans);
- btrfs_btree_balance_dirty(root->fs_info);
+ btrfs_btree_balance_dirty(BTRFS_I(dir)->root->fs_info);

return err;
}
@@ -9571,7 +9568,7 @@ static int btrfs_rename_exchange(struct inode *old_dir,
if (old_ino == BTRFS_FIRST_FREE_OBJECTID) {
ret = btrfs_unlink_subvol(trans, old_dir, old_dentry);
} else { /* src is an inode */
- ret = __btrfs_unlink_inode(trans, root, BTRFS_I(old_dir),
+ ret = __btrfs_unlink_inode(trans, BTRFS_I(old_dir),
BTRFS_I(old_dentry->d_inode),
old_dentry->d_name.name,
old_dentry->d_name.len);
@@ -9587,7 +9584,7 @@ static int btrfs_rename_exchange(struct inode *old_dir,
if (new_ino == BTRFS_FIRST_FREE_OBJECTID) {
ret = btrfs_unlink_subvol(trans, new_dir, new_dentry);
} else { /* dest is an inode */
- ret = __btrfs_unlink_inode(trans, dest, BTRFS_I(new_dir),
+ ret = __btrfs_unlink_inode(trans, BTRFS_I(new_dir),
BTRFS_I(new_dentry->d_inode),
new_dentry->d_name.name,
new_dentry->d_name.len);
@@ -9862,7 +9859,7 @@ static int btrfs_rename(struct user_namespace *mnt_userns,
*/
btrfs_pin_log_trans(root);
log_pinned = true;
- ret = __btrfs_unlink_inode(trans, root, BTRFS_I(old_dir),
+ ret = __btrfs_unlink_inode(trans, BTRFS_I(old_dir),
BTRFS_I(d_inode(old_dentry)),
old_dentry->d_name.name,
old_dentry->d_name.len);
@@ -9882,7 +9879,7 @@ static int btrfs_rename(struct user_namespace *mnt_userns,
ret = btrfs_unlink_subvol(trans, new_dir, new_dentry);
BUG_ON(new_inode->i_nlink == 0);
} else {
- ret = btrfs_unlink_inode(trans, dest, BTRFS_I(new_dir),
+ ret = btrfs_unlink_inode(trans, BTRFS_I(new_dir),
BTRFS_I(d_inode(new_dentry)),
new_dentry->d_name.name,
new_dentry->d_name.len);
diff --git a/fs/btrfs/tree-log.c b/fs/btrfs/tree-log.c
index 1d7e9812f55e1..6f51c4d922d48 100644
--- a/fs/btrfs/tree-log.c
+++ b/fs/btrfs/tree-log.c
@@ -926,7 +926,7 @@ static noinline int drop_one_dir_item(struct btrfs_trans_handle *trans,
if (ret)
goto out;

- ret = btrfs_unlink_inode(trans, root, dir, BTRFS_I(inode), name,
+ ret = btrfs_unlink_inode(trans, dir, BTRFS_I(inode), name,
name_len);
if (ret)
goto out;
@@ -1091,7 +1091,7 @@ static inline int __add_inode_ref(struct btrfs_trans_handle *trans,
inc_nlink(&inode->vfs_inode);
btrfs_release_path(path);

- ret = btrfs_unlink_inode(trans, root, dir, inode,
+ ret = btrfs_unlink_inode(trans, dir, inode,
victim_name, victim_name_len);
kfree(victim_name);
if (ret)
@@ -1165,7 +1165,7 @@ static inline int __add_inode_ref(struct btrfs_trans_handle *trans,
inc_nlink(&inode->vfs_inode);
btrfs_release_path(path);

- ret = btrfs_unlink_inode(trans, root,
+ ret = btrfs_unlink_inode(trans,
BTRFS_I(victim_parent),
inode,
victim_name,
@@ -1327,7 +1327,7 @@ static int unlink_old_inode_refs(struct btrfs_trans_handle *trans,
kfree(name);
goto out;
}
- ret = btrfs_unlink_inode(trans, root, BTRFS_I(dir),
+ ret = btrfs_unlink_inode(trans, BTRFS_I(dir),
inode, name, namelen);
kfree(name);
iput(dir);
@@ -1434,7 +1434,7 @@ static int add_link(struct btrfs_trans_handle *trans, struct btrfs_root *root,
ret = -ENOENT;
goto out;
}
- ret = btrfs_unlink_inode(trans, root, BTRFS_I(dir), BTRFS_I(other_inode),
+ ret = btrfs_unlink_inode(trans, BTRFS_I(dir), BTRFS_I(other_inode),
name, namelen);
if (ret)
goto out;
@@ -1580,7 +1580,7 @@ static noinline int add_inode_ref(struct btrfs_trans_handle *trans,
ret = btrfs_inode_ref_exists(inode, dir, key->type,
name, namelen);
if (ret > 0) {
- ret = btrfs_unlink_inode(trans, root,
+ ret = btrfs_unlink_inode(trans,
BTRFS_I(dir),
BTRFS_I(inode),
name, namelen);
@@ -2339,7 +2339,7 @@ static noinline int check_item_in_log(struct btrfs_trans_handle *trans,
}

inc_nlink(inode);
- ret = btrfs_unlink_inode(trans, root, BTRFS_I(dir),
+ ret = btrfs_unlink_inode(trans, BTRFS_I(dir),
BTRFS_I(inode), name, name_len);
if (!ret)
ret = btrfs_run_delayed_items(trans);
--
2.35.1