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[6/7] mm/zswap: cleanup zswap_load()

Message ID 20231206-zswap-lock-optimize-v1-6-e25b059f9c3a@bytedance.com (mailing list archive)
State New
Headers show
Series mm/zswap: optimize the scalability of zswap rb-tree | expand

Commit Message

Chengming Zhou Dec. 6, 2023, 9:46 a.m. UTC 
After the common decompress part goes to __zswap_load(), we can cleanup
the zswap_load() a little.

Signed-off-by: Chengming Zhou <zhouchengming@bytedance.com>
---
 mm/zswap.c | 12 ++++--------
 1 file changed, 4 insertions(+), 8 deletions(-)
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Patch

diff --git a/mm/zswap.c b/mm/zswap.c
index 667b66a3911b..50405811cd7b 100644
--- a/mm/zswap.c
+++ b/mm/zswap.c
@@ -1752,7 +1752,6 @@  bool zswap_load(struct folio *folio)
 	struct zswap_tree *tree = swap_zswap_tree(swp);
 	struct zswap_entry *entry;
 	u8 *dst;
-	bool ret;
 
 	VM_WARN_ON_ONCE(!folio_test_locked(folio));
 
@@ -1769,19 +1768,16 @@  bool zswap_load(struct folio *folio)
 		dst = kmap_local_page(page);
 		zswap_fill_page(dst, entry->value);
 		kunmap_local(dst);
-		ret = true;
-		goto stats;
+	} else {
+		__zswap_load(entry, page);
 	}
 
-	__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) {
@@ -1791,7 +1787,7 @@  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)