linux-kernel - Re: Build failure on latest powerpc/merge (311ae9e159d8 io_uring: fix dead-hung for non-iter fixed rw)

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Date:   Fri, 29 Nov 2019 17:14:18 +0100
From:   Christophe Leroy <christophe.leroy@....fr>
To:     Jens Axboe <axboe@...nel.dk>,
        "linuxppc-dev@...ts.ozlabs.org" <linuxppc-dev@...ts.ozlabs.org>,
        Pavel Begunkov <asml.silence@...il.com>
Cc:     stable@...r.kernel.org, LKML <linux-kernel@...r.kernel.org>
Subject: Re: Build failure on latest powerpc/merge (311ae9e159d8 io_uring: fix
 dead-hung for non-iter fixed rw)



Le 29/11/2019 à 17:04, Jens Axboe a écrit :
> On 11/29/19 6:53 AM, Christophe Leroy wrote:
>>     CC      fs/io_uring.o
>> fs/io_uring.c: In function ‘loop_rw_iter’:
>> fs/io_uring.c:1628:21: error: implicit declaration of function ‘kmap’
>> [-Werror=implicit-function-declaration]
>>       iovec.iov_base = kmap(iter->bvec->bv_page)
>>                        ^
>> fs/io_uring.c:1628:19: warning: assignment makes pointer from integer
>> without a cast [-Wint-conversion]
>>       iovec.iov_base = kmap(iter->bvec->bv_page)
>>                      ^
>> fs/io_uring.c:1643:4: error: implicit declaration of function ‘kunmap’
>> [-Werror=implicit-function-declaration]
>>       kunmap(iter->bvec->bv_page);
>>       ^
>>
>>
>> Reverting commit 311ae9e159d8 ("io_uring: fix dead-hung for non-iter
>> fixed rw") clears the failure.
>>
>> Most likely an #include is missing.
> 
> Huh weird how the build bots didn't catch that. Does the below work?

Yes it works, thanks.

Christophe