mm/z3fold: remove confusing local variable l reassignment

The local variable l holds the address of unbuddied[i] which won't change
after we take the pool lock.  Remove it to avoid confusion.

Link: https://lkml.kernel.org/r/20220308134311.59086-6-linmiaohe@huawei.com
Signed-off-by: Miaohe Lin <linmiaohe@huawei.com>
Reviewed-by: Vitaly Wool <vitaly.wool@konsulko.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>

diff --git a/mm/z3fold.c b/mm/z3fold.c
index 2f848ea45b4ddc2f26017d2ec3409f457d3e302f..adc0b3fa4906ca217aa22d5abd599de13d6ac61c 100644 (file)
--- a/mm/z3fold.c
+++ b/mm/z3fold.c
@@ -876,7 +876,6 @@ lookup:
 
                /* Re-check under lock. */
                spin_lock(&pool->lock);
-               l = &unbuddied[i];
                if (unlikely(zhdr != list_first_entry(READ_ONCE(l),
                                                struct z3fold_header, buddy)) ||
                    !z3fold_page_trylock(zhdr)) {