x86/mm/pat: Simplify the free_memtype() control flow (47553d42) · Commits · 戴 / test

arch/x86/mm/pat.c

+3 −8

Original line number	Diff line number	Diff line
		@@ -656,7 +656,6 @@ int reserve_memtype(u64 start, u64 end, enum page_cache_mode req_type,

		int free_memtype(u64 start, u64 end)
		{
		int err = -EINVAL;
		int is_range_ram;
		struct memtype *entry;

		@@ -671,14 +670,10 @@ int free_memtype(u64 start, u64 end)
		return 0;

		is_range_ram = pat_pagerange_is_ram(start, end);
		if (is_range_ram == 1) {

		err = free_ram_pages_type(start, end);

		return err;
		} else if (is_range_ram < 0) {
		if (is_range_ram == 1)
		return free_ram_pages_type(start, end);
		if (is_range_ram < 0)
		return -EINVAL;
		}

		spin_lock(&memtype_lock);
		entry = memtype_erase(start, end);