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ext4: initialize sbi->s_freeclusters_counter and sbi->s_dirtyclusters_counter before use in kunit test 

Fix that sbi->s_freeclusters_counter and sbi->s_dirtyclusters_counter are
used before initialization.

Signed-off-by: Kemeng Shi <shikemeng@huaweicloud.com>
Reported-by: Guenter Roeck <linux@roeck-us.net>
Tested-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20240304163543.6700-4-shikemeng@huaweicloud.com
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
This commit is contained in:
Kemeng Shi 2024-03-05 00:35:43 +08:00 committed by Theodore Ts'o
parent ad943758e0
commit 0ecae5410a
1 changed files with 19 additions and 1 deletions
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20
fs/ext4/mballoc-test.c
View File

@ -45,6 +45,7 @@ static struct file_system_type mbt_fs_type = {
static int mbt_mb_init(struct super_block *sb)
{
ext4_fsblk_t block;
int ret;
/* needed by ext4_mb_init->bdev_nonrot(sb->s_bdev) */
@ -69,8 +70,23 @@ static int mbt_mb_init(struct super_block *sb)
if (ret != 0)
goto err_out;
block = ext4_count_free_clusters(sb);
ret = percpu_counter_init(&EXT4_SB(sb)->s_freeclusters_counter, block,
GFP_KERNEL);
if (ret != 0)
goto err_mb_release;
ret = percpu_counter_init(&EXT4_SB(sb)->s_dirtyclusters_counter, 0,
GFP_KERNEL);
if (ret != 0)
goto err_freeclusters;
return 0;
err_freeclusters:
percpu_counter_destroy(&EXT4_SB(sb)->s_freeclusters_counter);
err_mb_release:
ext4_mb_release(sb);
err_out:
kfree(sb->s_bdev->bd_queue);
kfree(sb->s_bdev);
@ -79,6 +95,8 @@ err_out:
static void mbt_mb_release(struct super_block *sb)
{
percpu_counter_destroy(&EXT4_SB(sb)->s_dirtyclusters_counter);
percpu_counter_destroy(&EXT4_SB(sb)->s_freeclusters_counter);
ext4_mb_release(sb);
kfree(sb->s_bdev->bd_queue);
kfree(sb->s_bdev);
@ -333,7 +351,7 @@ static int mbt_kunit_init(struct kunit *test)
ext4_mb_mark_context,
ext4_mb_mark_context_stub);
/* stub function will be called in mt_mb_init->ext4_mb_init */
/* stub function will be called in mbt_mb_init->ext4_mb_init */
if (mbt_mb_init(sb) != 0) {
mbt_ctx_release(sb);
mbt_ext4_free_super_block(sb);