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Message-ID: <664cc88d-18a5-18c4-5bce-4d4352d15f4f@kernel.dk>
Date: Wed, 28 Jun 2017 06:43:41 -0600
From: Jens Axboe <axboe@...nel.dk>
To: Stephen Rothwell <sfr@...b.auug.org.au>
Cc: Linux-Next Mailing List <linux-next@...r.kernel.org>,
Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
"Martin K. Petersen" <martin.petersen@...cle.com>,
Michael Ellerman <mpe@...erman.id.au>,
Benjamin Herrenschmidt <benh@...nel.crashing.org>,
PowerPC <linuxppc-dev@...ts.ozlabs.org>
Subject: Re: linux-next: build failure after merge of the block tree
On 06/28/2017 02:04 AM, Stephen Rothwell wrote:
> Hi Jens,
>
> After merging the block tree, today's linux-next build (powerpc
> allnoconfig) failed like this:
>
> fs/fcntl.o: In function `do_fcntl':
> fcntl.c:(.text+0x6d4): undefined reference to `__get_user_bad'
> fcntl.c:(.text+0x730): undefined reference to `__get_user_bad'
>
> Probably caused by commit
>
> c75b1d9421f8 ("fs: add fcntl() interface for setting/getting write life time hints")
>
> On powerpc (at least) you cannot use get_user() to fetch anything larger
> than "unsigned long" i.e. 32 bits on 32 bit powerpc.
>
> This has been discussed before (and, I think, a fix attempted).
Gah, thanks for letting me know. I'll test your patch and queue it
up to fix this issue.
--
Jens Axboe
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