damon_commit_ctx
int damon_commit_ctx(struct damon_ctx *old_ctx, struct damon_ctx *new_ctx);
err = damon_commit_ctx(ctx, param_ctx);
err = damon_commit_ctx(ctx, param_ctx);
err = damon_commit_ctx(test_ctx, running_ctx);
err = damon_commit_ctx(test_ctx, param_ctx);
err = damon_commit_ctx(kdamond->damon_ctx, param_ctx);
KUNIT_EXPECT_EQ(test, damon_commit_ctx(dst, src), 0);
KUNIT_EXPECT_EQ(test, damon_commit_ctx(dst, src), -EINVAL);
KUNIT_EXPECT_EQ(test, damon_commit_ctx(dst, src), 0);