From 0ecae5410ab526225293d2591ca4632b22c2fd8c Mon Sep 17 00:00:00 2001 From: Kemeng Shi Date: Tue, 5 Mar 2024 00:35:43 +0800 Subject: 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 Reported-by: Guenter Roeck Tested-by: Guenter Roeck Link: https://lore.kernel.org/r/20240304163543.6700-4-shikemeng@huaweicloud.com Signed-off-by: Theodore Ts'o --- fs/ext4/mballoc-test.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) (limited to 'fs/ext4') diff --git a/fs/ext4/mballoc-test.c b/fs/ext4/mballoc-test.c index 8188d18ca09d..044ca5238f41 100644 --- a/fs/ext4/mballoc-test.c +++ b/fs/ext4/mballoc-test.c @@ -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); -- cgit v1.2.3