On Fri, Jan 02, 2026 at 05:21:42PM +0800, Menglong Dong wrote:

SNIP

quoted

---

diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index 4e7d72dfbcd4..7479664844ea 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h

@@ -1309,6 +1309,7 @@ enum bpf_tramp_prog_type {
 	BPF_TRAMP_MODIFY_RETURN,
 	BPF_TRAMP_MAX,
 	BPF_TRAMP_REPLACE, /* more than MAX */
+	BPF_TRAMP_FSESSION,
 };
 
 struct bpf_tramp_image {

@@ -1861,6 +1862,7 @@ struct bpf_link_ops {
 struct bpf_tramp_link {
 	struct bpf_link link;
 	struct hlist_node tramp_hlist;
+	struct hlist_node extra_hlist;
 	u64 cookie;
 };

In this way, it indeed can make the update of the hlist more clear. However,
I think that you missed the reading of the hlist as I mentioned above.
You can't add both the "tramp_hlist" and "extra_hlist" to the same hlist. If
so, how do we iterate the hlist? Do I miss something?

ugh, it's on the same list.. nevermind then ;-)

jirka