liveupdate: Extract luo_session_deserialize_one helper

Extract the logic for deserializing single entries for sessions into
separate helper functions. In preparation to a linked-block
serialization for sessions.

This is a pure code movement, no other changes intended.

Acked-by: Mike Rapoport (Microsoft) <rppt@kernel.org>
Reviewed-by: Pratyush Yadav (Google) <pratyush@kernel.org>
Signed-off-by: Pasha Tatashin <pasha.tatashin@soleen.com>
Link: https://patch.msgid.link/20260603154402.468928-7-pasha.tatashin@soleen.com
Signed-off-by: Mike Rapoport (Microsoft) <rppt@kernel.org>

1 files changed, 36 insertions, 27 deletions

diff --git a/kernel/liveupdate/luo_session.c b/kernel/liveupdate/luo_session.c
index 85782c6f3d6c..1cd315e0f6de 100644
--- a/kernel/liveupdate/luo_session.c
+++ b/kernel/liveupdate/luo_session.c
@@ -555,6 +555,40 @@ int __init luo_session_setup_incoming(u64 sessions_pa)
 	return 0;
 }
 
+static int luo_session_deserialize_one(struct luo_session_header *sh,
+				       struct luo_session_ser *ser)
+{
+	struct luo_session *session;
+	int err;
+
+	session = luo_session_alloc(ser->name);
+	if (IS_ERR(session)) {
+		pr_warn("Failed to allocate session [%.*s] during deserialization %pe\n",
+			(int)sizeof(ser->name), ser->name, session);
+		return PTR_ERR(session);
+	}
+
+	err = luo_session_insert(sh, session);
+	if (err) {
+		pr_warn("Failed to insert session [%s] %pe\n",
+			session->name, ERR_PTR(err));
+		luo_session_free(session);
+		return err;
+	}
+
+	scoped_guard(mutex, &session->mutex) {
+		err = luo_file_deserialize(&session->file_set,
+					   &ser->file_set_ser);
+	}
+	if (err) {
+		pr_warn("Failed to deserialize files for session [%s] %pe\n",
+			session->name, ERR_PTR(err));
+		return err;
+	}
+
+	return 0;
+}
+
 int luo_session_deserialize(void)
 {
 	struct luo_session_header *sh = &luo_session_global.incoming;
@@ -586,34 +620,9 @@ int luo_session_deserialize(void)
 	 * reliably reset devices and reclaim memory.
 	 */
 	for (int i = 0; i < sh->header_ser->count; i++) {
-		struct luo_session *session;
-
-		session = luo_session_alloc(sh->ser[i].name);
-		if (IS_ERR(session)) {
-			pr_warn("Failed to allocate session [%.*s] during deserialization %pe\n",
-				(int)sizeof(sh->ser[i].name),
-				sh->ser[i].name, session);
-			err = PTR_ERR(session);
-			goto save_err;
-		}
-
-		err = luo_session_insert(sh, session);
-		if (err) {
-			pr_warn("Failed to insert session [%s] %pe\n",
-				session->name, ERR_PTR(err));
-			luo_session_free(session);
-			goto save_err;
-		}
-
-		scoped_guard(mutex, &session->mutex) {
-			err = luo_file_deserialize(&session->file_set,
-						   &sh->ser[i].file_set_ser);
-		}
-		if (err) {
-			pr_warn("Failed to deserialize files for session [%s] %pe\n",
-				session->name, ERR_PTR(err));
+		err = luo_session_deserialize_one(sh, &sh->ser[i]);
+		if (err)
 			goto save_err;
-		}
 	}
 
 	kho_restore_free(sh->header_ser);