From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Sasha Levin <sasha.levin@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] mm: call vma_adjust_trans_huge() only for thp-enabled vma
Date: Fri, 28 Feb 2014 00:56:00 +0200 [thread overview]
Message-ID: <20140227225600.GA8034@node.dhcp.inet.fi> (raw)
In-Reply-To: <1393475977-3381-4-git-send-email-n-horiguchi@ah.jp.nec.com>
On Wed, Feb 26, 2014 at 11:39:37PM -0500, Naoya Horiguchi wrote:
> vma_adjust() is called also for vma(VM_HUGETLB) and it could happen that
> we happen to try to split hugetlbfs hugepage. So exclude the possibility.
NAK.
It can't happen: vma_adjust_trans_huge checks for vma->vm_ops and hugetlb
VMA always have it set unlike THP.
--
Kirill A. Shutemov
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WARNING: multiple messages have this Message-ID (diff)
From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: Naoya Horiguchi <n-horiguchi@ah.jp.nec.com>
Cc: Sasha Levin <sasha.levin@oracle.com>,
Andrew Morton <akpm@linux-foundation.org>,
linux-mm@kvack.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] mm: call vma_adjust_trans_huge() only for thp-enabled vma
Date: Fri, 28 Feb 2014 00:56:00 +0200 [thread overview]
Message-ID: <20140227225600.GA8034@node.dhcp.inet.fi> (raw)
In-Reply-To: <1393475977-3381-4-git-send-email-n-horiguchi@ah.jp.nec.com>
On Wed, Feb 26, 2014 at 11:39:37PM -0500, Naoya Horiguchi wrote:
> vma_adjust() is called also for vma(VM_HUGETLB) and it could happen that
> we happen to try to split hugetlbfs hugepage. So exclude the possibility.
NAK.
It can't happen: vma_adjust_trans_huge checks for vma->vm_ops and hugetlb
VMA always have it set unlike THP.
--
Kirill A. Shutemov
next prev parent reply other threads:[~2014-02-27 22:56 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-27 4:39 [PATCH 0/3] fixes on page table walker and hugepage rmapping Naoya Horiguchi
2014-02-27 4:39 ` Naoya Horiguchi
2014-02-27 4:39 ` [PATCH 1/3] mm/pagewalk.c: fix end address calculation in walk_page_range() Naoya Horiguchi
2014-02-27 4:39 ` Naoya Horiguchi
2014-02-27 21:03 ` Andrew Morton
2014-02-27 21:03 ` Andrew Morton
2014-02-27 21:19 ` Naoya Horiguchi
2014-02-27 21:20 ` Kirill A. Shutemov
2014-02-27 21:20 ` Kirill A. Shutemov
2014-02-27 21:54 ` Naoya Horiguchi
2014-02-27 4:39 ` [PATCH 2/3] mm, hugetlbfs: fix rmapping for anonymous hugepages with page_pgoff() Naoya Horiguchi
2014-02-27 4:39 ` Naoya Horiguchi
2014-02-27 21:19 ` Andrew Morton
2014-02-27 21:19 ` Andrew Morton
2014-02-27 21:53 ` Naoya Horiguchi
2014-02-28 19:59 ` [PATCH v2] " Naoya Horiguchi
[not found] ` <5310ea8b.c425e00a.2cd9.ffffe097SMTPIN_ADDED_BROKEN@mx.google.com>
2014-02-28 23:14 ` Andrew Morton
2014-02-28 23:14 ` Andrew Morton
2014-03-01 3:35 ` [PATCH v3] " Naoya Horiguchi
[not found] ` <1393644926-49vw3qw9@n-horiguchi@ah.jp.nec.com>
2014-03-01 23:08 ` Sasha Levin
2014-03-01 23:08 ` Sasha Levin
2014-03-03 5:02 ` [PATCH] mm: add pte_present() check on existing hugetlb_entry callbacks Naoya Horiguchi
2014-03-03 5:02 ` Naoya Horiguchi
2014-03-03 20:06 ` Sasha Levin
2014-03-03 20:06 ` Sasha Levin
2014-03-03 21:38 ` Sasha Levin
2014-03-03 21:38 ` Sasha Levin
2014-03-04 21:32 ` Naoya Horiguchi
[not found] ` <1393968743-imrxpynb@n-horiguchi@ah.jp.nec.com>
2014-03-04 22:46 ` Sasha Levin
2014-03-04 22:46 ` Sasha Levin
2014-03-04 23:49 ` Naoya Horiguchi
[not found] ` <1393976967-lnmm5xcs@n-horiguchi@ah.jp.nec.com>
2014-03-06 4:31 ` Sasha Levin
2014-03-06 4:31 ` Sasha Levin
2014-03-06 16:08 ` Naoya Horiguchi
[not found] ` <1394122113-xsq3i6vw@n-horiguchi@ah.jp.nec.com>
2014-03-06 21:16 ` Sasha Levin
2014-03-06 21:16 ` Sasha Levin
2014-03-07 6:35 ` Naoya Horiguchi
2014-03-15 6:45 ` Naoya Horiguchi
2014-02-27 4:39 ` [PATCH 3/3] mm: call vma_adjust_trans_huge() only for thp-enabled vma Naoya Horiguchi
2014-02-27 4:39 ` Naoya Horiguchi
2014-02-27 21:23 ` Andrew Morton
2014-02-27 21:23 ` Andrew Morton
2014-02-27 22:08 ` Naoya Horiguchi
2014-02-27 22:56 ` Kirill A. Shutemov [this message]
2014-02-27 22:56 ` Kirill A. Shutemov
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