Now pgdat.lru_lock was replaced by lruvec lock. It's not used anymore.

Signed-off-by: Alex Shi <redacted>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Konstantin Khlebnikov <redacted>
Cc: Hugh Dickins <hughd@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: linux-mm@kvack.org
Cc: linux-kernel@vger.kernel.org
Cc: cgroups@vger.kernel.org
---
 include/linux/mmzone.h | 1 -
 mm/page_alloc.c        | 1 -
 2 files changed, 2 deletions(-)

diff --git a/include/linux/mmzone.h b/include/linux/mmzone.h
index 36c1680efd90..8d7318ce5f62 100644
--- a/include/linux/mmzone.h
+++ b/include/linux/mmzone.h

@@ -735,7 +735,6 @@ struct deferred_split {

        /* Write-intensive fields used by page reclaim */
        ZONE_PADDING(_pad1_)
-       spinlock_t              lru_lock;

 #ifdef CONFIG_DEFERRED_STRUCT_PAGE_INIT
        /*

diff --git a/mm/page_alloc.c b/mm/page_alloc.c
index e028b87ce294..4d7df42b32d6 100644
--- a/mm/page_alloc.c
+++ b/mm/page_alloc.c

@@ -6721,7 +6721,6 @@ static void __meminit pgdat_init_internals(struct pglist_data *pgdat)
        init_waitqueue_head(&pgdat->pfmemalloc_wait);

        pgdat_page_ext_init(pgdat);
-       spin_lock_init(&pgdat->lru_lock);
        lruvec_init(&pgdat->__lruvec);
 }