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Message-ID: <20190326090142.GH28406@dhcp22.suse.cz> Date: Tue, 26 Mar 2019 10:01:42 +0100 From: Michal Hocko <mhocko@...nel.org> To: Pankaj Suryawanshi <pankaj.suryawanshi@...fochips.com> Cc: Kirill Tkhai <ktkhai@...tuozzo.com>, Vlastimil Babka <vbabka@...e.cz>, "aneesh.kumar@...ux.ibm.com" <aneesh.kumar@...ux.ibm.com>, "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>, "minchan@...nel.org" <minchan@...nel.org>, "linux-mm@...ck.org" <linux-mm@...ck.org>, "khandual@...ux.vnet.ibm.com" <khandual@...ux.vnet.ibm.com> Subject: Re: [External] Re: vmscan: Reclaim unevictable pages [You were asked to use a reasonable quoting several times. This is really annoying because it turns the email thread into a complete mess] On Tue 26-03-19 07:53:14, Pankaj Suryawanshi wrote: > Is there anyone who is familiar with this? Please Comment. Not really. You are observing an unexpected behavior of the page reclaim which hasn't changed for quite some time. So I find more probable that your non-vanilla kernel is doing something unexpected. It would help if you could track down how does the unevictable page get down to the reclaim path. I assume this is a CMA page or something like that but those shouldn't get to the reclaim path AFIR. -- Michal Hocko SUSE Labs
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