linux-kernel - Re: [PATCH] mm, hugetlbfs: include mm.h for vm_operations

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Message-ID: <CAPcyv4iQWzTkrayubb32CNrYqOV77-hAC_JajZpQ0pmzoXuE+A@mail.gmail.com>
Date:   Tue, 12 Dec 2017 00:05:08 -0800
From:   Dan Williams <dan.j.williams@...el.com>
To:     Michal Hocko <mhocko@...nel.org>
Cc:     Arnd Bergmann <arnd@...db.de>,
        Andrew Morton <akpm@...ux-foundation.org>,
        Stephen Rothwell <sfr@...b.auug.org.au>,
        "Aneesh Kumar K.V" <aneesh.kumar@...ux.vnet.ibm.com>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] mm, hugetlbfs: include mm.h for vm_operations_struct

On Mon, Dec 11, 2017 at 11:47 PM, Michal Hocko <mhocko@...nel.org> wrote:
> On Mon 11-12-17 17:21:27, Arnd Bergmann wrote:
>> The infiniband umem code causes a build failure in some configurations:
>>
>> In file included from drivers/infiniband/core/umem_odp.c:41:0:
>> include/linux/hugetlb.h: In function 'vma_kernel_pagesize':
>> include/linux/hugetlb.h:262:32: error: dereferencing pointer to incomplete type 'const struct vm_operations_struct'
>>
>> Including the header file that defines the structure is sufficient to
>> avoid this.
>>
>> Fixes: ac9284a6b670 ("mm, hugetlbfs: introduce ->pagesize() to vm_operations_struct")
>> Signed-off-by: Arnd Bergmann <arnd@...db.de>
>
> I've tried to do the same but the compilation failed for other
> arches/configs. See http://lkml.kernel.org/r/20171210113715.GE20234@dhcp22.suse.cz

Andrew, Stephen, please drop this ->pagesize() patch out of -mm and
-next. I'll circle back once I have this include dependency fixed up.
Thanks for the reports and sorry for the noise.