mm: zswap: skip xarray walk in zswap_invalidate() when zswap is unused

zswap_invalidate() still walks the per-area xarray even when zswap has
never been enabled.  Add a zswap_never_enabled() to skip it.

Link: https://lore.kernel.org/20260910123544.818146-3-wangkefeng.wang@huawei.com
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Acked-by: Yosry Ahmed <yosry@kernel.org>
Reviewed-by: Johannes Weiner <hannes@cmpxchg.org>
Cc: Chengming Zhou <chengming.zhou@linux.dev>
Cc: Kairui Song <kasong@tencent.com>
Cc: Nhat Pham <nphamcs@gmail.com>
Cc: Yosry Ahmed <yosryahmed@google.com>

0 files changed, 0 insertions, 0 deletions