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    Subject[PATCH v12 15/16] mm/pgdat: remove pgdat lru_lock
    Date
    Now pgdat.lru_lock was replaced by lruvec lock. It's not used anymore.

    Signed-off-by: Alex Shi <alex.shi@linux.alibaba.com>
    Cc: Andrew Morton <akpm@linux-foundation.org>
    Cc: Konstantin Khlebnikov <khlebnikov@yandex-team.ru>
    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 e178aa624e46..d32a17e1d8c2 100644
    --- a/include/linux/mmzone.h
    +++ b/include/linux/mmzone.h
    @@ -723,7 +723,6 @@ 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 48eb0f1410d4..05ce6e1a3098 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);
    }

    --
    1.8.3.1
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