mm/zswap: cleanup zswap_load()

After the common decompress part goes to __zswap_load(), we can cleanup
the zswap_load() a little.

Link: https://lkml.kernel.org/r/[email protected]
Signed-off-by: Chengming Zhou <[email protected]>
Reviewed-by: Yosry Ahmed <[email protected]>
Acked-by: Chis Li <[email protected]> (Google)
Cc: Barry Song <[email protected]>
Cc: Dan Streetman <[email protected]>
Cc: Johannes Weiner <[email protected]>
Cc: Nhat Pham <[email protected]>
Cc: Seth Jennings <[email protected]>
Cc: Vitaly Wool <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>

Author: Chengming Zhou

mm/zswap.c

@@ -1746,7 +1746,6 @@ bool zswap_load(struct folio *folio)
 	struct zswap_tree *tree = zswap_trees[type];
 	struct zswap_entry *entry;
 	u8 *dst;
-	bool ret;
 
 	VM_WARN_ON_ONCE(!folio_test_locked(folio));
 
@@ -1759,23 +1758,20 @@ bool zswap_load(struct folio *folio)
 	}
 	spin_unlock(&tree->lock);
 
-	if (!entry->length) {
+	if (entry->length)
+		__zswap_load(entry, page);
+	else {
 		dst = kmap_local_page(page);
 		zswap_fill_page(dst, entry->value);
 		kunmap_local(dst);
-		ret = true;
-		goto stats;
 	}
 
-	__zswap_load(entry, page);
-	ret = true;
-stats:
 	count_vm_event(ZSWPIN);
 	if (entry->objcg)
 		count_objcg_event(entry->objcg, ZSWPIN);
 
 	spin_lock(&tree->lock);
-	if (ret && zswap_exclusive_loads_enabled) {
+	if (zswap_exclusive_loads_enabled) {
 		zswap_invalidate_entry(tree, entry);
 		folio_mark_dirty(folio);
 	} else if (entry->length) {
@@ -1785,7 +1781,7 @@ bool zswap_load(struct folio *folio)
 	zswap_entry_put(tree, entry);
 	spin_unlock(&tree->lock);
 
-	return ret;
+	return true;
 }
 
 void zswap_invalidate(int type, pgoff_t offset)