From: "Kirill A. Shutemov" <kirill@shutemov.name>
To: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
Cc: akpm@linux-foundation.org, benh@kernel.crashing.org,
paulus@samba.org, mpe@ellerman.id.au, linux-mm@kvack.org,
linux-kernel@vger.kernel.org, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH 2/2] mm: THP page cache support for ppc64
Date: Fri, 11 Nov 2016 13:14:39 +0300 [thread overview]
Message-ID: <20161111101439.GB19382@node.shutemov.name> (raw)
In-Reply-To: <20161107083441.21901-2-aneesh.kumar@linux.vnet.ibm.com>
On Mon, Nov 07, 2016 at 02:04:41PM +0530, Aneesh Kumar K.V wrote:
> @@ -2953,6 +2966,13 @@ static int do_set_pmd(struct fault_env *fe, struct page *page)
> ret = VM_FAULT_FALLBACK;
> page = compound_head(page);
>
> + /*
> + * Archs like ppc64 need additonal space to store information
> + * related to pte entry. Use the preallocated table for that.
> + */
> + if (arch_needs_pgtable_deposit() && !fe->prealloc_pte)
> + fe->prealloc_pte = pte_alloc_one(vma->vm_mm, fe->address);
> +
-ENOMEM handling?
I think we should do this way before this point. Maybe in do_fault() or
something.
--
Kirill A. Shutemov
next prev parent reply other threads:[~2016-11-11 10:14 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-11-07 8:34 [PATCH 1/2] mm: move vma_is_anonymous check within pmd_move_must_withdraw Aneesh Kumar K.V
2016-11-07 8:34 ` [PATCH 2/2] mm: THP page cache support for ppc64 Aneesh Kumar K.V
2016-11-11 10:14 ` Kirill A. Shutemov [this message]
2016-11-11 12:12 ` Aneesh Kumar K.V
2016-11-11 16:29 ` Kirill A. Shutemov
2016-11-12 1:37 ` Hugh Dickins
2016-11-07 8:57 ` [PATCH 1/2] mm: move vma_is_anonymous check within pmd_move_must_withdraw Hillf Danton
2016-11-07 9:27 ` kbuild test robot
2016-11-07 11:39 ` Aneesh Kumar K.V
2016-11-07 14:46 ` [PATCH V2] " Aneesh Kumar K.V
2016-11-11 10:06 ` Kirill A. Shutemov
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