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[172.10.233.147]) by smtp.gmail.com with ESMTPSA id f50sm6777567otf.47.2020.09.21.22.53.10 (version=TLS1 cipher=ECDHE-ECDSA-AES128-SHA bits=128/128); Mon, 21 Sep 2020 22:53:11 -0700 (PDT) Date: Mon, 21 Sep 2020 22:53:09 -0700 (PDT) From: Hugh Dickins X-X-Sender: hugh@eggly.anvils To: Alex Shi cc: akpm@linux-foundation.org, mgorman@techsingularity.net, tj@kernel.org, hughd@google.com, khlebnikov@yandex-team.ru, daniel.m.jordan@oracle.com, willy@infradead.org, hannes@cmpxchg.org, lkp@intel.com, linux-mm@kvack.org, linux-kernel@vger.kernel.org, cgroups@vger.kernel.org, shakeelb@google.com, iamjoonsoo.kim@lge.com, richard.weiyang@gmail.com, kirill@shutemov.name, alexander.duyck@gmail.com, rong.a.chen@intel.com, mhocko@suse.com, vdavydov.dev@gmail.com, shy828301@gmail.com Subject: Re: [PATCH v18 24/32] mm/pgdat: remove pgdat lru_lock In-Reply-To: <1598273705-69124-25-git-send-email-alex.shi@linux.alibaba.com> Message-ID: References: <1598273705-69124-1-git-send-email-alex.shi@linux.alibaba.com> <1598273705-69124-25-git-send-email-alex.shi@linux.alibaba.com> User-Agent: Alpine 2.11 (LSU 23 2013-08-11) MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: 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 > Reviewed-by: Alexander Duyck 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 > Cc: Konstantin Khlebnikov > Cc: Hugh Dickins > Cc: Johannes Weiner > 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 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