f2fs: fix return val in f2fs_start_ckpt_thread()

Return PTR_ERR(cprc->f2fs_issue_ckpt) instead of -ENOMEM;
Signed-off-by: Yangtao Li <frank.li@vivo.com>
Reviewed-by: Chao Yu <chao@kernel.org>
Signed-off-by: Jaegeuk Kim <jaegeuk@kernel.org>

fs/f2fs/checkpoint.c

@@ -1902,8 +1902,10 @@ int f2fs_start_ckpt_thread(struct f2fs_sb_info *sbi)
 	cprc->f2fs_issue_ckpt = kthread_run(issue_checkpoint_thread, sbi,
 			"f2fs_ckpt-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(cprc->f2fs_issue_ckpt)) {
+		int err = PTR_ERR(cprc->f2fs_issue_ckpt);
+
 		cprc->f2fs_issue_ckpt = NULL;
-		return -ENOMEM;
+		return err;
 	}
 
 	set_task_ioprio(cprc->f2fs_issue_ckpt, cprc->ckpt_thread_ioprio);

fs/f2fs/gc.c

@@ -171,13 +171,10 @@ int f2fs_start_gc_thread(struct f2fs_sb_info *sbi)
 {
 	struct f2fs_gc_kthread *gc_th;
 	dev_t dev = sbi->sb->s_bdev->bd_dev;
-	int err = 0;
 
 	gc_th = f2fs_kmalloc(sbi, sizeof(struct f2fs_gc_kthread), GFP_KERNEL);
-	if (!gc_th) {
-		err = -ENOMEM;
-		goto out;
-	}
+	if (!gc_th)
+		return -ENOMEM;
 
 	gc_th->urgent_sleep_time = DEF_GC_THREAD_URGENT_SLEEP_TIME;
 	gc_th->min_sleep_time = DEF_GC_THREAD_MIN_SLEEP_TIME;
@@ -192,12 +189,14 @@ int f2fs_start_gc_thread(struct f2fs_sb_info *sbi)
 	sbi->gc_thread->f2fs_gc_task = kthread_run(gc_thread_func, sbi,
 			"f2fs_gc-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(gc_th->f2fs_gc_task)) {
-		err = PTR_ERR(gc_th->f2fs_gc_task);
+		int err = PTR_ERR(gc_th->f2fs_gc_task);
+
 		kfree(gc_th);
 		sbi->gc_thread = NULL;
+		return err;
 	}
-out:
-	return err;
+
+	return 0;
 }
 
 void f2fs_stop_gc_thread(struct f2fs_sb_info *sbi)

fs/f2fs/segment.c

@@ -620,7 +620,6 @@ int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
 {
 	dev_t dev = sbi->sb->s_bdev->bd_dev;
 	struct flush_cmd_control *fcc;
-	int err;
 
 	if (SM_I(sbi)->fcc_info) {
 		fcc = SM_I(sbi)->fcc_info;
@@ -644,7 +643,8 @@ int f2fs_create_flush_cmd_control(struct f2fs_sb_info *sbi)
 	fcc->f2fs_issue_flush = kthread_run(issue_flush_thread, sbi,
 				"f2fs_flush-%u:%u", MAJOR(dev), MINOR(dev));
 	if (IS_ERR(fcc->f2fs_issue_flush)) {
-		err = PTR_ERR(fcc->f2fs_issue_flush);
+		int err = PTR_ERR(fcc->f2fs_issue_flush);
+
 		kfree(fcc);
 		SM_I(sbi)->fcc_info = NULL;
 		return err;