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

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Date:   Tue, 7 Feb 2017 15:15:08 -0800
From:   Andrew Morton <akpm@...ux-foundation.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>
Cc:     linux-next@...r.kernel.org, linux-kernel@...r.kernel.org,
        Mike Rapoport <rppt@...ux.vnet.ibm.com>,
        Mark Brown <broonie@...nel.org>,
        kernel-build-reports@...ts.linaro.org,
        linaro-kernel@...ts.linaro.org,
        Hillf Danton <hillf.zj@...baba-inc.com>
Subject: Re: linux-next: build failure after merge of the akpm-current tree

On Wed, 8 Feb 2017 10:08:03 +1100 Stephen Rothwell <sfr@...b.auug.org.au> wrote:

> Hi Andrew,
> 
> After merging the akpm-current tree, today's linux-next build (arm
> allnoconfig, bfin (most, if not all, configs) and many others) failed
> like this:
> 
> mm/nommu.c:1201:15: error: conflicting types for 'do_mmap'
> mm/nommu.c:1580:5: error: conflicting types for 'do_munmap'
> mm/nommu.c:1638:1: error: conflicting types for 'do_munmap'
> ipc/shm.c:1368:3: error: too few arguments to function 'do_munmap'
> 
> Caused by commit
> 
>   24424bfbce7e ("userfaultfd: non-cooperative: add event for memory unmaps")
> 
> This forgot to update the mm/nommu.c versions of these functions :-(
> 
> Sorry for not reporting this earlier.
> 
> I have no idea what to do about this as this patch is deep within the mm
> changes and so almost certainly will not revert cleanly (and dropping
> this patch will presumably have flow on effects to the reset of the
> mm patches).

That patch has a string of fixes and I think we have that fixed up. 
I'll be doing another mmotm in a few minutes...