From: "HORIGUCHI NAOYA(堀口 直也)" <naoya.horiguchi@nec.com>
To: Oscar Salvador <osalvador@suse.de>
Cc: "akpm@linux-foundation.org" <akpm@linux-foundation.org>,
"aris@ruivo.org" <aris@ruivo.org>,
"mhocko@kernel.org" <mhocko@kernel.org>,
"tony.luck@intel.com" <tony.luck@intel.com>,
"cai@lca.pw" <cai@lca.pw>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>
Subject: Re: [PATCH v4 5/7] mm,hwpoison: drain pcplists before bailing out for non-buddy zero-refcount page
Date: Fri, 25 Sep 2020 02:22:27 +0000 [thread overview]
Message-ID: <20200925022227.GB31132@hori.linux.bs1.fc.nec.co.jp> (raw)
In-Reply-To: <20200917081049.27428-6-osalvador@suse.de>
On Thu, Sep 17, 2020 at 10:10:47AM +0200, Oscar Salvador wrote:
> A page with 0-refcount and !PageBuddy could perfectly be a pcppage.
> Currently, we bail out with an error if we encounter such a page, meaning
> that we do not handle pcppages neither from hard-offline nor from
> soft-offline path.
>
> Fix this by draining pcplists whenever we find this kind of page and retry
> the check again. It might be that pcplists have been spilled into the
> buddy allocator and so we can handle it.
>
> Signed-off-by: Oscar Salvador <osalvador@suse.de>
Acked-by: Naoya Horiguchi <naoya.horiguchi@nec.com>
next prev parent reply other threads:[~2020-09-25 2:22 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-09-17 8:10 [PATCH v4 0/7] HWpoison: further fixes and cleanups Oscar Salvador
2020-09-17 8:10 ` [PATCH v4 1/7] mm,hwpoison: take free pages off the buddy freelists Oscar Salvador
2020-09-25 2:22 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-17 8:10 ` [PATCH v4 2/7] mm,hwpoison: Do not set hugepage_or_freepage unconditionally Oscar Salvador
2020-09-18 19:26 ` Aristeu Rozanski
2020-09-17 8:10 ` [PATCH v4 3/7] mm,hwpoison: Try to narrow window race for free pages Oscar Salvador
2020-09-18 19:27 ` Aristeu Rozanski
2020-09-17 8:10 ` [PATCH v4 4/7] mm,hwpoison: refactor madvise_inject_error Oscar Salvador
2020-09-17 8:10 ` [PATCH v4 5/7] mm,hwpoison: drain pcplists before bailing out for non-buddy zero-refcount page Oscar Salvador
2020-09-25 2:22 ` HORIGUCHI NAOYA(堀口 直也) [this message]
2020-09-17 8:10 ` [PATCH v4 6/7] mm,hwpoison: drop unneeded pcplist draining Oscar Salvador
2020-09-17 8:10 ` [PATCH v4 7/7] mm,hwpoison: remove stale code Oscar Salvador
2020-09-17 11:39 ` [PATCH v4 0/7] HWpoison: further fixes and cleanups HORIGUCHI NAOYA(堀口 直也)
2020-09-17 13:09 ` Oscar Salvador
2020-09-17 13:40 ` Oscar Salvador
2020-09-17 15:27 ` HORIGUCHI NAOYA(堀口 直也)
2020-09-18 5:49 ` osalvador
2020-09-18 19:25 ` aris
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