linux-kernel - Re: linux-next: build failure after merge of the nfs tree

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Date:	Mon, 24 Aug 2015 10:17:37 -0400
From:	Trond Myklebust <trond.myklebust@....uio.no>
To:	Stephen Rothwell <sfr@...b.auug.org.au>
Cc:	linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
	Chuck Lever <chuck.lever@...cle.com>,
	Anna Schumaker <Anna.Schumaker@...app.com>,
	Oleg Drokin <green@...uxhacker.ru>,
	Amir Shehata <amir.shehata@...el.com>
Subject: Re: linux-next: build failure after merge of the nfs tree

Hi Stephen,

On Sun, Aug 23, 2015 at 7:16 PM, Stephen Rothwell <sfr@...b.auug.org.au> wrote:
> Hi Trond,
>
> On Tue, 18 Aug 2015 10:56:34 +1000 Stephen Rothwell <sfr@...b.auug.org.au> wrote:
>>
>> After merging the nfs tree, today's linux-next build (x86_64 allmodconfig)
>> failed like this:
>>
>> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c: In function 'kiblnd_pmr_pool_map':
>> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:1828:2: error: implicit declaration of function 'ib_reg_phys_mr' [-Werror=implicit-function-declaration]
>>   pmr->pmr_mr = ib_reg_phys_mr(hdev->ibh_pd,
>>   ^
>> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:1828:14: warning: assignment makes pointer from integer without a cast
>>   pmr->pmr_mr = ib_reg_phys_mr(hdev->ibh_pd,
>>               ^
>> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c: In function 'kiblnd_hdev_setup_mrs':
>> drivers/staging/lustre/lnet/klnds/o2iblnd/o2iblnd.c:2380:6: warning: assignment makes pointer from integer without a cast
>>    mr = ib_reg_phys_mr(hdev->ibh_pd, &ipb, 1, acflags, &iova);
>>       ^
>>
>> Caused by commit
>>
>>   1241d7bf2ac8 ("core: Remove the ib_reg_phys_mr() and ib_rereg_phys_mr() verbs")
>>
>> which noted this build failure would occur :-(
>>
>> Since this commit is self comtained, I have reverted it until someone
>> provides a fix for the lustre code.
>
> Any chance of you including the below patch into the nfs tree to fix
> the allmodfig build?  Currently, I have to disable lustre in the nfs
> tree merge and then reenable it in the staging tree merge - which shows
> that this patch (which is also in the staging tree) fixes the build
> problem.  Without this patch (or a patch that disables lustre), if the
> nfs tree is merged by Linus before the staging tree, his allmodconfig
> build will break.
>
> (Greg's SOB line is there because he has also included this patch in
> the staging tree.)

If Oleg is OK with this, then I can certainly try.

Cheers
  Trond
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