Re: [RFC bpf-next v4 3/6] bpf: Remove an unnecessary check.

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On 2/2/24 2:05 PM, thinker.li@xxxxxxxxx wrote:
From: Kui-Feng Lee <thinker.li@xxxxxxxxx>

The "i" here is always equal to "btf_type_vlen(t)" since
the "for_each_member()" loop never breaks.

It can be separated from the PTR_MAYBE_NULL support set. Please post this as its own patch without the RFC.
Signed-off-by: Kui-Feng Lee <thinker.li@xxxxxxxxx>
---
  kernel/bpf/bpf_struct_ops.c | 21 +++++++++------------
  1 file changed, 9 insertions(+), 12 deletions(-)

diff --git a/kernel/bpf/bpf_struct_ops.c b/kernel/bpf/bpf_struct_ops.c
index 0decd862dfe0..f98f580de77a 100644
--- a/kernel/bpf/bpf_struct_ops.c
+++ b/kernel/bpf/bpf_struct_ops.c
@@ -189,20 +189,17 @@ int bpf_struct_ops_desc_init(struct bpf_struct_ops_desc *st_ops_desc,
  		}
  	}
- if (i == btf_type_vlen(t)) {
-		if (st_ops->init(btf)) {
-			pr_warn("Error in init bpf_struct_ops %s\n",
-				st_ops->name);
-			return -EINVAL;
-		} else {
-			st_ops_desc->type_id = type_id;
-			st_ops_desc->type = t;
-			st_ops_desc->value_id = value_id;
-			st_ops_desc->value_type = btf_type_by_id(btf,
-								 value_id);
-		}
+	if (st_ops->init(btf)) {
+		pr_warn("Error in init bpf_struct_ops %s\n",
+			st_ops->name);
+		return -EINVAL;
  	}
+ st_ops_desc->type_id = type_id;
+	st_ops_desc->type = t;
+	st_ops_desc->value_id = value_id;
+	st_ops_desc->value_type = btf_type_by_id(btf, value_id);
+
  	return 0;
  }





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