From: Andrew Morton <akpm@linux-foundation.org>
To: Vineet Gupta <Vineet.Gupta1@synopsys.com>
Cc: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>,
"Kirill A. Shutemov" <kirill.shutemov@linux.intel.com>,
Mel Gorman <mgorman@suse.de>,
"Matthew Wilcox" <matthew.r.wilcox@intel.com>,
Minchan Kim <minchan@kernel.org>, <linux-arch@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <linux-mm@kvack.org>,
<arc-linux-dev@synopsys.com>
Subject: Re: [PATCH 08/11] mm,thp: reduce ifdef'ery for THP in generic code
Date: Wed, 16 Sep 2015 15:25:40 -0700 [thread overview]
Message-ID: <20150916152540.b19aebc9f7a0889685867f1a@linux-foundation.org> (raw)
In-Reply-To: <1440666194-21478-9-git-send-email-vgupta@synopsys.com>
On Thu, 27 Aug 2015 14:33:11 +0530 Vineet Gupta <Vineet.Gupta1@synopsys.com> wrote:
> This is purely cosmetic, just makes code more readable
>
> ...
>
> --- a/include/asm-generic/pgtable.h
> +++ b/include/asm-generic/pgtable.h
> @@ -30,9 +30,20 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma,
> #endif
>
> #ifndef __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS
> +#ifdef CONFIG_TRANSPARENT_HUGEPAGE
> extern int pmdp_set_access_flags(struct vm_area_struct *vma,
> unsigned long address, pmd_t *pmdp,
> pmd_t entry, int dirty);
> +#else /* CONFIG_TRANSPARENT_HUGEPAGE */
> +static inline int pmdp_set_access_flags(struct vm_area_struct *vma,
> + unsigned long address, pmd_t *pmdp,
> + pmd_t entry, int dirty)
> +{
> + BUG();
> + return 0;
> +}
Is it possible to simply leave this undefined? So the kernel fails at
link time?
> --- a/mm/pgtable-generic.c
> +++ b/mm/pgtable-generic.c
Good heavens that file is a mess. Your patch does improve it.
next prev parent reply other threads:[~2015-09-16 22:26 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1440666194-21478-1-git-send-email-vgupta@synopsys.com>
[not found] ` <1440666194-21478-5-git-send-email-vgupta@synopsys.com>
2015-08-27 15:32 ` [PATCH 04/11] ARCv2: mm: THP support Kirill A. Shutemov
2015-08-27 16:56 ` Vineet Gupta
[not found] ` <1440666194-21478-9-git-send-email-vgupta@synopsys.com>
2015-09-16 22:25 ` Andrew Morton [this message]
[not found] ` <1440666194-21478-10-git-send-email-vgupta@synopsys.com>
2015-09-16 22:26 ` [PATCH 09/11] mm,thp: introduce flush_pmd_tlb_range Andrew Morton
2015-09-16 22:27 ` [PATCH 00/11] THP support for ARC Andrew Morton
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