linux-kernel - Re: linux-next: Tree for May 25 (fs/io

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Date:   Mon, 25 May 2020 09:35:33 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Stephen Rothwell <sfr@...b.auug.org.au>,
        Linux Next Mailing List <linux-next@...r.kernel.org>
Cc:     Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        io-uring@...r.kernel.org, axboe <axboe@...nel.dk>
Subject: Re: linux-next: Tree for May 25 (fs/io_uring)

On 5/25/20 5:49 AM, Stephen Rothwell wrote:
> Hi all,
> 
> Changes since 20200522:
> 


on i386:

../fs/io_uring.c:500:26: error: field ‘wpq’ has incomplete type
  struct wait_page_queue  wpq;
                          ^~~
In file included from ../include/linux/export.h:43:0,
                 from ../include/linux/linkage.h:7,
                 from ../include/linux/kernel.h:8,
                 from ../fs/io_uring.c:42:
../fs/io_uring.c: In function ‘io_async_buf_func’:
../include/linux/kernel.h:1003:51: error: dereferencing pointer to incomplete type ‘struct wait_page_queue’
  BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
                                                   ^
../include/linux/compiler.h:372:9: note: in definition of macro ‘__compiletime_assert’
   if (!(condition))     \
         ^~~~~~~~~
../include/linux/compiler.h:392:2: note: in expansion of macro ‘_compiletime_assert’
  _compiletime_assert(condition, msg, __compiletime_assert_, __COUNTER__)
  ^~~~~~~~~~~~~~~~~~~
../include/linux/build_bug.h:39:37: note: in expansion of macro ‘compiletime_assert’
 #define BUILD_BUG_ON_MSG(cond, msg) compiletime_assert(!(cond), msg)
                                     ^~~~~~~~~~~~~~~~~~
../include/linux/kernel.h:1003:2: note: in expansion of macro ‘BUILD_BUG_ON_MSG’
  BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
  ^~~~~~~~~~~~~~~~
../include/linux/kernel.h:1003:20: note: in expansion of macro ‘__same_type’
  BUILD_BUG_ON_MSG(!__same_type(*(ptr), ((type *)0)->member) && \
                    ^~~~~~~~~~~
../fs/io_uring.c:2618:8: note: in expansion of macro ‘container_of’
  wpq = container_of(wait, struct wait_page_queue, wait);
        ^~~~~~~~~~~~
In file included from <command-line>:0:0:
./../include/linux/compiler_types.h:133:35: error: invalid use of undefined type ‘struct wait_page_queue’
 #define __compiler_offsetof(a, b) __builtin_offsetof(a, b)
                                   ^
../include/linux/stddef.h:17:32: note: in expansion of macro ‘__compiler_offsetof’
 #define offsetof(TYPE, MEMBER) __compiler_offsetof(TYPE, MEMBER)
                                ^~~~~~~~~~~~~~~~~~~
../include/linux/kernel.h:1006:21: note: in expansion of macro ‘offsetof’
  ((type *)(__mptr - offsetof(type, member))); })
                     ^~~~~~~~
../fs/io_uring.c:2618:8: note: in expansion of macro ‘container_of’
  wpq = container_of(wait, struct wait_page_queue, wait);
        ^~~~~~~~~~~~
../fs/io_uring.c:2620:8: error: implicit declaration of function ‘wake_page_match’; did you mean ‘huge_page_mask’? [-Werror=implicit-function-declaration]
  ret = wake_page_match(wpq, key);
        ^~~~~~~~~~~~~~~
        huge_page_mask
  AR      sound/pci/ac97/built-in.a
../fs/io_uring.c: In function ‘io_rw_should_retry’:
../fs/io_uring.c:2667:8: error: implicit declaration of function ‘kiocb_wait_page_queue_init’; did you mean ‘pgdat_page_ext_init’? [-Werror=implicit-function-declaration]
  ret = kiocb_wait_page_queue_init(kiocb, &req->io->rw.wpq,
        ^~~~~~~~~~~~~~~~~~~~~~~~~~
        pgdat_page_ext_init


-- 
~Randy
Reported-by: Randy Dunlap <rdunlap@...radead.org>