mm/zswap: fix typos: s/zwap/zswap/

As the subject says.

Link: https://lkml.kernel.org/r/[e-mail]
Signed-off-by: SeongJae Park <[e-mail]>
Acked-by: Yosry Ahmed <[e-mail]>
Acked-by: Nhat Pham <[e-mail]>
Reviewed-by: Chengming Zhou <[e-mail]>
Cc: Chris Li <[e-mail]>
Cc: David Hildenbrand <[e-mail]>
Cc: Johannes Weiner <[e-mail]>
Cc: Jonathan Corbet <[e-mail]>
Cc: Liam Howlett <[e-mail]>
Cc: Lorenzo Stoakes <[e-mail]>
Cc: Michal Hocko <[e-mail]>
Cc: Mike Rapoport <[e-mail]>
Cc: Muchun Song <[e-mail]>
Cc: Roman Gushchin <[e-mail]>
Cc: Shakeel Butt <[e-mail]>
Cc: Suren Baghdasaryan <[e-mail]>
Cc: Vlastimil Babka <[e-mail]>
Signed-off-by: Andrew Morton <[e-mail]>

mm/memcontrol.c

···
  * @size: size of compressed object
  *
  * This forces the charge after obj_cgroup_may_zswap() allowed
- * compression and storage in zwap for this cgroup to go ahead.
+ * compression and storage in zswap for this cgroup to go ahead.
  */
 void obj_cgroup_charge_zswap(struct obj_cgroup *objcg, size_t size)
 {

mm/zswap.c

···
 	 * acomp instance, then get those requests done simultaneously. but in this
 	 * case, zswap actually does store and load page by page, there is no
 	 * existing method to send the second page before the first page is done
-	 * in one thread doing zwap.
+	 * in one thread doing zswap.
 	 * but in different threads running on different cpu, we have different
 	 * acomp instance, so multiple threads can do (de)compression in parallel.
 	 */
···
 	 *
 	 * 1. We extract the swp_entry_t to the stack, allowing
 	 *    zswap_writeback_entry() to pin the swap entry and
-	 *    then validate the zwap entry against that swap entry's
+	 *    then validate the zswap entry against that swap entry's
 	 *    tree using pointer value comparison. Only when that
 	 *    is successful can the entry be dereferenced.
 	 *