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

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Message-ID: <20241209110144.7a8968fc@canb.auug.org.au>
Date: Mon, 9 Dec 2024 11:01:44 +1100
From: Stephen Rothwell <sfr@...b.auug.org.au>
To: Andrew Morton <akpm@...ux-foundation.org>
Cc: Junjie Fu <fujunjie1@...com>, Linux Kernel Mailing List
 <linux-kernel@...r.kernel.org>, Linux Next Mailing List
 <linux-next@...r.kernel.org>
Subject: linux-next: build failure after merge of the mm tree

Hi all,

After merging the mm tree, today's linux-next build (arm
multi_v7_defconfig) failed like this:

fs/aio.c:478:27: error: 'noop_dirty_folio' undeclared here (not in a function)
  478 |         .dirty_folio    = noop_dirty_folio,
      |                           ^~~~~~~~~~~~~~~~
fs/aio.c: In function 'aio_setup_ring':
fs/aio.c:524:25: error: implicit declaration of function '__filemap_get_folio'; did you mean 'filemap_dirty_folio'? [-Wimplicit-function-declaration]
  524 |                 folio = __filemap_get_folio(file->f_mapping, i,
      |                         ^~~~~~~~~~~~~~~~~~~
      |                         filemap_dirty_folio
fs/aio.c:525:45: error: 'FGP_LOCK' undeclared (first use in this function); did you mean 'BPF_F_LOCK'?
  525 |                                             FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
      |                                             ^~~~~~~~
      |                                             BPF_F_LOCK
fs/aio.c:525:45: note: each undeclared identifier is reported only once for each function it appears in
fs/aio.c:525:56: error: 'FGP_ACCESSED' undeclared (first use in this function)
  525 |                                             FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
      |                                                        ^~~~~~~~~~~~
fs/aio.c:525:71: error: 'FGP_CREAT' undeclared (first use in this function); did you mean 'IPC_CREAT'?
  525 |                                             FGP_LOCK | FGP_ACCESSED | FGP_CREAT,
      |                                                                       ^~~~~~~~~
      |                                                                       IPC_CREAT
fs/aio.c:532:17: error: implicit declaration of function 'folio_end_read'; did you mean 'folio_test_head'? [-Wimplicit-function-declaration]
  532 |                 folio_end_read(folio, true);
      |                 ^~~~~~~~~~~~~~
      |                 folio_test_head

Caused by commit

  98a9217fdcb8 ("mempolicy.h: remove unnecessary header file inclusions")

from the mm-unstable branch of the mm tree.

I have reverted that commit for today.

-- 
Cheers,
Stephen Rothwell

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