tree:   git://git.cmpxchg.org/linux-mmotm.git master
head:   4873e01c1a932866e01a6ecd91b39d45a8efd8e7
commit: 8cd153a90381c18eaac809b53520ea958b0e1721 [129/283] mm: convert i_mmap_mutex to rwsem
config: x86_64-allnoconfig (attached as .config)
reproduce:
  git checkout 8cd153a90381c18eaac809b53520ea958b0e1721
  # save the attached .config to linux build tree
  make ARCH=x86_64 

Note: the mmotm/master HEAD 4873e01c1a932866e01a6ecd91b39d45a8efd8e7 builds fine.
      It only hurts bisectibility.

All error/warnings:

   mm/fremap.c: In function 'SYSC_remap_file_pages':
>> mm/fremap.c:241:22: error: 'struct address_space' has no member named 'i_mmap_mutex'
      mutex_lock(&mapping->i_mmap_mutex);
                         ^
>> mm/fremap.c:247:24: error: 'struct address_space' has no member named 'i_mmap_mutex'
      mutex_unlock(&mapping->i_mmap_mutex);
                           ^

vim +241 mm/fremap.c

3ee6dafc Miklos Szeredi    2007-07-19  235  			} else {
3ee6dafc Miklos Szeredi    2007-07-19  236  				BUG_ON(addr != start);
3ee6dafc Miklos Szeredi    2007-07-19  237  				err = 0;
3ee6dafc Miklos Szeredi    2007-07-19  238  			}
4eb91982 Rik van Riel      2014-01-02  239  			goto out_freed;
3ee6dafc Miklos Szeredi    2007-07-19  240  		}
3d48ae45 Peter Zijlstra    2011-05-24 @241  		mutex_lock(&mapping->i_mmap_mutex);
^1da177e Linus Torvalds    2005-04-16  242  		flush_dcache_mmap_lock(mapping);
^1da177e Linus Torvalds    2005-04-16  243  		vma->vm_flags |= VM_NONLINEAR;
6b2dbba8 Michel Lespinasse 2012-10-08  244  		vma_interval_tree_remove(vma, &mapping->i_mmap);
^1da177e Linus Torvalds    2005-04-16  245  		vma_nonlinear_insert(vma, &mapping->i_mmap_nonlinear);
^1da177e Linus Torvalds    2005-04-16  246  		flush_dcache_mmap_unlock(mapping);
3d48ae45 Peter Zijlstra    2011-05-24 @247  		mutex_unlock(&mapping->i_mmap_mutex);
^1da177e Linus Torvalds    2005-04-16  248  	}
^1da177e Linus Torvalds    2005-04-16  249  
ba470de4 Rik van Riel      2008-10-18  250  	if (vma->vm_flags & VM_LOCKED) {

:::::: The code at line 241 was first introduced by commit
:::::: 3d48ae45e72390ddf8cc5256ac32ed6f7a19cbea mm: Convert i_mmap_lock to a mutex

:::::: TO: Peter Zijlstra <a.p.zijlstra@chello.nl>
:::::: CC: Linus Torvalds <torvalds@linux-foundation.org>

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