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fs: ext4: fix uninitialized symbols 

Fix the issue detected by the smatch tool.

fs/ext4/inode.c:3583 ext4_map_blocks_atomic_write_slow() error: uninitialized symbol 'next_pblk'.
fs/ext4/namei.c:1776 ext4_lookup() error: uninitialized symbol 'de'.
fs/ext4/namei.c:1829 ext4_get_parent() error: uninitialized symbol 'de'.
fs/ext4/namei.c:3162 ext4_rmdir() error: uninitialized symbol 'de'.
fs/ext4/namei.c:3242 __ext4_unlink() error: uninitialized symbol 'de'.
fs/ext4/namei.c:3697 ext4_find_delete_entry() error: uninitialized symbol 'de'.

These changes enhance code clarity, address static analysis tool errors.

Signed-off-by: Ranganath V N <vnranganath.20@gmail.com>
Message-ID: <20251011063830.47485-1-vnranganath.20@gmail.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Ranganath V N 2025-10-11 12:08:29 +05:30 committed by Theodore Ts'o
parent ce3236a3c7
commit 6640d55218
2 changed files with 6 additions and 6 deletions
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2
fs/ext4/inode.c
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@ -3544,7 +3544,7 @@ static int ext4_map_blocks_atomic_write_slow(handle_t *handle,
ext4_lblk_t m_lblk = map->m_lblk;
unsigned int m_len = map->m_len;
unsigned int mapped_len = 0, m_flags = 0;
ext4_fsblk_t next_pblk;
ext4_fsblk_t next_pblk = 0;
bool check_next_pblk = false;
int ret = 0;

10
fs/ext4/namei.c
View File

@ -1762,7 +1762,7 @@ success:
static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsigned int flags)
{
struct inode *inode;
struct ext4_dir_entry_2 *de;
struct ext4_dir_entry_2 *de = NULL;
struct buffer_head *bh;
if (dentry->d_name.len > EXT4_NAME_LEN)
@ -1818,7 +1818,7 @@ static struct dentry *ext4_lookup(struct inode *dir, struct dentry *dentry, unsi
struct dentry *ext4_get_parent(struct dentry *child)
{
__u32 ino;
struct ext4_dir_entry_2 * de;
struct ext4_dir_entry_2 * de = NULL;
struct buffer_head *bh;
bh = ext4_find_entry(d_inode(child), &dotdot_name, &de, NULL);
@ -3133,7 +3133,7 @@ static int ext4_rmdir(struct inode *dir, struct dentry *dentry)
int retval;
struct inode *inode;
struct buffer_head *bh;
struct ext4_dir_entry_2 *de;
struct ext4_dir_entry_2 *de = NULL;
handle_t *handle = NULL;
retval = ext4_emergency_state(dir->i_sb);
@ -3224,7 +3224,7 @@ int __ext4_unlink(struct inode *dir, const struct qstr *d_name,
{
int retval = -ENOENT;
struct buffer_head *bh;
struct ext4_dir_entry_2 *de;
struct ext4_dir_entry_2 *de = NULL;
handle_t *handle;
int skip_remove_dentry = 0;
@ -3688,7 +3688,7 @@ static int ext4_find_delete_entry(handle_t *handle, struct inode *dir,
{
int retval = -ENOENT;
struct buffer_head *bh;
struct ext4_dir_entry_2 *de;
struct ext4_dir_entry_2 *de = NULL;
bh = ext4_find_entry(dir, d_name, &de, NULL);
if (IS_ERR(bh))