On Mon, 24 Aug 2020, Alex Shi wrote:

> Now pgdat.lru_lock was replaced by lruvec lock. It's not used anymore.
> 
> Signed-off-by: Alex Shi <[email protected]>
> Reviewed-by: Alexander Duyck <[email protected]>

I don't take pleasure in spoiling your celebrations and ceremonies,
but I strongly agree with AlexD that this should simply be merged
into the big one, 20/32.  That can be ceremony enough.

> Cc: Andrew Morton <[email protected]>
> Cc: Konstantin Khlebnikov <[email protected]>
> Cc: Hugh Dickins <[email protected]>
> Cc: Johannes Weiner <[email protected]>
> Cc: [email protected]
> Cc: [email protected]
> Cc: [email protected]
> ---
>  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 f0596e634863..0ed520954843 100644
> --- a/include/linux/mmzone.h
> +++ b/include/linux/mmzone.h
> @@ -758,7 +758,6 @@ 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 fab5e97dc9ca..775120fcc869 100644
> --- a/mm/page_alloc.c
> +++ b/mm/page_alloc.c
> @@ -6733,7 +6733,6 @@ 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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