From: Laurent Dufour <ldufour@linux.vnet.ibm.com>
To: Michal Hocko <mhocko@kernel.org>
Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org,
linuxppc-dev@lists.ozlabs.org, x86@kernel.org,
linux-doc@vger.kernel.org, linux-snps-arc@lists.infradead.org,
linux-arm-kernel@lists.infradead.org,
linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org,
linux-sh@vger.kernel.org, sparclinux@vger.kernel.org,
Jerome Glisse <jglisse@redhat.com>,
aneesh.kumar@linux.vnet.ibm.com, akpm@linux-foundation.org,
mpe@ellerman.id.au, benh@kernel.crashing.org, paulus@samba.org,
Jonathan Corbet <corbet@lwn.net>,
Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will.deacon@arm.com>,
Yoshinori Sato <ysato@users.sourceforge.jp>,
Rich Felker <dalias@libc.org>,
"David S . Miller" <davem@davemloft.net>,
Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>,
Vineet Gupta <vgupta@synopsys.com>,
Palmer Dabbelt <palmer@sifive.com>, Albert Ou <albert@sifive.com>,
Martin Schwidefsky <schwidefsky@de.ibm.com>,
Heiko Carstens <heiko.carstens@de.ibm.com>,
David Rientjes <rientjes@google.com>,
Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH v3 2/2] mm: remove odd HAVE_PTE_SPECIAL
Date: Wed, 11 Apr 2018 10:41:23 +0200 [thread overview]
Message-ID: <5bd1bb46-8f71-e6db-7fb7-43d023a37f58@linux.vnet.ibm.com> (raw)
In-Reply-To: <20180411083315.GA23400@dhcp22.suse.cz>
On 11/04/2018 10:33, Michal Hocko wrote:
> On Wed 11-04-18 10:03:36, Laurent Dufour wrote:
>> @@ -881,7 +876,8 @@ struct page *_vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
>>
>> if (is_zero_pfn(pfn))
>> return NULL;
>> -check_pfn:
>> +
>> +check_pfn: __maybe_unused
>> if (unlikely(pfn > highest_memmap_pfn)) {
>> print_bad_pte(vma, addr, pte, NULL);
>> return NULL;
>> @@ -891,7 +887,7 @@ struct page *_vm_normal_page(struct vm_area_struct *vma, unsigned long addr,
>> * NOTE! We still have PageReserved() pages in the page tables.
>> * eg. VDSO mappings can cause them to exist.
>> */
>> -out:
>> +out: __maybe_unused
>> return pfn_to_page(pfn);
>
> Why do we need this ugliness all of the sudden?
Indeed the compiler doesn't complaint but in theory it should since these
labels are not used depending on CONFIG_ARCH_HAS_PTE_SPECIAL.
next prev parent reply other threads:[~2018-04-11 8:41 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-04-11 8:03 [PATCH v3 0/2] move __HAVE_ARCH_PTE_SPECIAL in Kconfig Laurent Dufour
2018-04-11 8:03 ` [PATCH v3 1/2] mm: introduce ARCH_HAS_PTE_SPECIAL Laurent Dufour
2018-04-11 8:34 ` Michal Hocko
2018-04-11 8:03 ` [PATCH v3 2/2] mm: remove odd HAVE_PTE_SPECIAL Laurent Dufour
2018-04-11 8:33 ` Michal Hocko
2018-04-11 8:41 ` Laurent Dufour [this message]
2018-04-11 8:49 ` Michal Hocko
2018-04-11 8:59 ` Christophe LEROY
2018-04-11 8:58 ` Christophe LEROY
2018-04-11 9:03 ` Laurent Dufour
2018-04-11 9:09 ` Christophe LEROY
2018-04-11 10:32 ` Laurent Dufour
2018-04-11 11:09 ` Michal Hocko
2018-04-12 11:48 ` [PATCH v4] " Laurent Dufour
2018-04-12 20:46 ` David Rientjes
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