From: Michal Hocko <mhocko@suse.com>
To: Huang Shijie <shijie.huang@arm.com>
Cc: akpm@linux-foundation.org, catalin.marinas@arm.com,
n-horiguchi@ah.jp.nec.com, kirill.shutemov@linux.intel.com,
aneesh.kumar@linux.vnet.ibm.com, gerald.schaefer@de.ibm.com,
mike.kravetz@oracle.com, linux-mm@kvack.org, will.deacon@arm.com,
steve.capper@arm.com, kaly.xin@arm.com, nd@arm.com,
linux-arm-kernel@lists.infradead.org, vbabka@suze.cz
Subject: Re: [PATCH v3 0/4] mm: fix the "counter.sh" failure for libhugetlbfs
Date: Mon, 5 Dec 2016 10:31:01 +0100 [thread overview]
Message-ID: <20161205093100.GF30758@dhcp22.suse.cz> (raw)
In-Reply-To: <1480929431-22348-1-git-send-email-shijie.huang@arm.com>
On Mon 05-12-16 17:17:07, Huang Shijie wrote:
[...]
> The failure is caused by:
> 1) kernel fails to allocate a gigantic page for the surplus case.
> And the gather_surplus_pages() will return NULL in the end.
>
> 2) The condition checks for some functions are wrong:
> return_unused_surplus_pages()
> nr_overcommit_hugepages_store()
> hugetlb_overcommit_handler()
OK, so how is this any different from gigantic (1G) hugetlb pages on
x86_64? Do we need the same functionality or is it just 32MB not being
handled in the same way as 1G?
Thanks!
--
Michal Hocko
SUSE Labs
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next prev parent reply other threads:[~2016-12-05 9:31 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-05 9:17 Huang Shijie
2016-12-05 9:17 ` [PATCH v3 1/4] mm: hugetlb: rename some allocation functions Huang Shijie
2016-12-05 9:17 ` [PATCH v3 2/4] mm: hugetlb: add a new parameter for some functions Huang Shijie
2016-12-05 9:17 ` [PATCH v3 3/4] mm: hugetlb: change the return type " Huang Shijie
2016-12-05 9:17 ` [PATCH v3 4/4] mm: hugetlb: support gigantic surplus pages Huang Shijie
2016-12-05 9:31 ` Michal Hocko [this message]
2016-12-06 10:03 ` [PATCH v3 0/4] mm: fix the "counter.sh" failure for libhugetlbfs Huang Shijie
2016-12-07 15:02 ` Michal Hocko
2016-12-08 9:36 ` Huang Shijie
2016-12-08 9:52 ` Michal Hocko
2016-12-09 9:58 ` Huang Shijie
2016-12-07 8:46 ` Huang Shijie
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