[PATCH] mm/z3fold:remove unneeded spinlock in z3fold_alloc

[Zhongkun He <hezhongkun.hzk@bytedance.com>]

The spinklock in z3fold_alloc() is used to protect page->lru,
but now it was removed in commit 'e774a7bc7f0ad', so remove
the spinlock too.

Signed-off-by: Zhongkun He <hezhongkun.hzk@bytedance.com>
---
 mm/z3fold.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/mm/z3fold.c b/mm/z3fold.c
index 7f608c0667f3..58946cacbfbb 100644
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -1068,9 +1068,7 @@ static int z3fold_alloc(struct z3fold_pool *pool, size_t size, gfp_t gfp,
 	add_to_unbuddied(pool, zhdr);
 
 headless:
-	spin_lock(&pool->lock);
 	*handle = encode_handle(zhdr, bud);
-	spin_unlock(&pool->lock);
 	if (bud != HEADLESS)
 		z3fold_page_unlock(zhdr);
 
-- 
2.20.1