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From: David Rientjes <>
To: Vlastimil Babka <>
Cc: Andrew Morton <>,
	Mel Gorman <>,,
Subject: Re: [patch] mm, page_alloc: wakeup kcompactd even if kswapd cannot free more memory
Date: Tue, 20 Mar 2018 13:26:16 -0700 (PDT)	[thread overview]
Message-ID: <> (raw)
In-Reply-To: <>

On Tue, 20 Mar 2018, Vlastimil Babka wrote:

> > Kswapd will not wakeup if per-zone watermarks are not failing or if too
> > many previous attempts at background reclaim have failed.
> > 
> > This can be true if there is a lot of free memory available.  For high-
> > order allocations, kswapd is responsible for waking up kcompactd for
> > background compaction.  If the zone is now below its watermarks or
>                                          not ?

Good catch, Andrew please let me know if you would like a resend to 
correct this.

      reply	other threads:[~2018-03-20 20:26 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-03-12  0:00 David Rientjes
2018-03-20  9:56 ` Vlastimil Babka
2018-03-20 20:26   ` David Rientjes [this message]

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