From: Michal Hocko <mhocko@kernel.org>
To: Hillf Danton <hillf.zj@alibaba-inc.com>
Cc: "'Johannes Weiner'" <hannes@cmpxchg.org>,
"'Andrew Morton'" <akpm@linux-foundation.org>,
"'Mel Gorman'" <mgorman@suse.de>,
"'Minchan Kim'" <minchan.kim@gmail.com>,
"'Rik van Riel'" <riel@redhat.com>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 6/7] mm: vmscan: move dirty pages out of the way until they're flushed
Date: Fri, 3 Feb 2017 16:15:40 +0100 [thread overview]
Message-ID: <20170203151532.GE19325@dhcp22.suse.cz> (raw)
In-Reply-To: <006601d27df1$228a3940$679eabc0$@alibaba-inc.com>
On Fri 03-02-17 15:42:55, Hillf Danton wrote:
>
> On February 03, 2017 3:20 AM Johannes Weiner wrote:
> > @@ -1063,7 +1063,7 @@ static unsigned long shrink_page_list(struct list_head *page_list,
> > PageReclaim(page) &&
> > test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
> > nr_immediate++;
> > - goto keep_locked;
> > + goto activate_locked;
>
> Out of topic but relevant IMHO, I can't find where it is cleared by grepping:
>
> $ grep -nr PGDAT_WRITEBACK linux-4.9/mm
> linux-4.9/mm/vmscan.c:1019: test_bit(PGDAT_WRITEBACK, &pgdat->flags)) {
> linux-4.9/mm/vmscan.c:1777: set_bit(PGDAT_WRITEBACK, &pgdat->flags);
I would just get rid of this flag.
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2017-02-03 15:15 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-02-02 19:19 [PATCH 0/7] mm: vmscan: fix kswapd writeback regression v2 Johannes Weiner
2017-02-02 19:19 ` [PATCH 1/7] mm: vmscan: scan dirty pages even in laptop mode Johannes Weiner
2017-02-02 19:19 ` [PATCH 2/7] mm: vmscan: kick flushers when we encounter dirty pages on the LRU Johannes Weiner
2017-02-02 19:19 ` [PATCH 3/7] mm: vmscan: kick flushers when we encounter dirty pages on the LRU fix Johannes Weiner
2017-02-02 19:19 ` [PATCH 4/7] mm: vmscan: remove old flusher wakeup from direct reclaim path Johannes Weiner
2017-02-02 19:19 ` [PATCH 5/7] mm: vmscan: only write dirty pages that the scanner has seen twice Johannes Weiner
2017-02-02 19:19 ` [PATCH 6/7] mm: vmscan: move dirty pages out of the way until they're flushed Johannes Weiner
2017-02-03 7:42 ` Hillf Danton
2017-02-03 15:15 ` Michal Hocko [this message]
2017-02-02 19:19 ` [PATCH 7/7] mm: vmscan: move dirty pages out of the way until they're flushed fix Johannes Weiner
2017-02-02 22:49 ` [PATCH 0/7] mm: vmscan: fix kswapd writeback regression v2 Andrew Morton
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