From: Michal Hocko <mhocko@suse.com>
To: Qian Cai <cai@lca.pw>
Cc: Hugh Dickins <hughd@google.com>,
Andrea Arcangeli <aarcange@redhat.com>,
torvalds@linux-foundation.org, vbabka@suse.cz,
akpm@linux-foundation.org, Linux-MM <linux-mm@kvack.org>
Subject: Re: BUG() due to "mm: put_and_wait_on_page_locked() while page is migrated"
Date: Fri, 25 Jan 2019 09:51:56 +0100 [thread overview]
Message-ID: <20190125085156.GH3560@dhcp22.suse.cz> (raw)
In-Reply-To: <921c752d-8806-b9b5-8bb6-d570a3fec33d@lca.pw>
On Thu 24-01-19 23:31:46, Qian Cai wrote:
[...]
> It looks like the put_and_wait commit just make the bug easier to reproduce, as
> it has finally been able to reproduce it (via a different path) after 50+ runs
> of migrate_pages03 on one of the affected machines even with the commit reverted.
OK, great. This makes it a little bit less of a head scratcher then.
Could you confirm whether this is FS specific please? I will go and
check the migration path. Maybe we doing something wrong there but it
would be definitely good to know whether the underlying fs is really
relevant. Thanks!
--
Michal Hocko
SUSE Labs
next prev parent reply other threads:[~2019-01-25 8:51 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-23 4:29 Qian Cai
2019-01-23 9:30 ` Michal Hocko
2019-01-25 4:19 ` Hugh Dickins
2019-01-25 4:19 ` Hugh Dickins
2019-01-25 4:31 ` Qian Cai
2019-01-25 8:51 ` Michal Hocko [this message]
2019-01-26 3:17 ` Qian Cai
2019-02-05 19:08 ` Hugh Dickins
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