drivers/vfio/pci/vfio_pci.c:464:28: error: 'VM_RESERVED' undecla

Hi Konstantin,

FYI, kernel build failed on

tree:   git://git.kernel.org/pub/scm/linux/kernel/git/glommer/memcg.git kmemcg-stack
head:   5ef649339ef370c1858f5471fd8b38a7a82c3b60
commit: aa011e456e6bd7e4179b03289d7501f8c8444809 [33/221] mm: kill vma flag VM_RESERVED and mm->reserved_vm counter
config: x86_64-allmodconfig

Note: the HEAD commit builds fine. It only hurts bisectibility.

All error/warnings:

drivers/vfio/pci/vfio_pci.c: In function 'vfio_pci_mmap':
drivers/vfio/pci/vfio_pci.c:464:28: error: 'VM_RESERVED' undeclared (first use in this function) drivers/vfio/pci/vfio_pci.c:464:28: note: each undeclared identifier is reported only once for each function it appears in --
drivers/media/video/videobuf-dma-sg.c: In function '__videobuf_mmap_mapper':
drivers/media/video/videobuf-dma-sg.c:585:35: error: 'VM_RESERVED' undeclared (first use in this function) drivers/media/video/videobuf-dma-sg.c:585:35: note: each undeclared identifier is reported only once for each function it appears in --
drivers/media/video/videobuf2-memops.c: In function 'vb2_mmap_pfn_range':
drivers/media/video/videobuf2-memops.c:166:36: error: 'VM_RESERVED' undeclared (first use in this function) drivers/media/video/videobuf2-memops.c:166:36: note: each undeclared identifier is reported only once for each function it appears in

vim +464 drivers/vfio/pci/vfio_pci.c

89e1f7d4 (Alex Williamson 2012-07-31  458) 			return ret;
89e1f7d4 (Alex Williamson 2012-07-31  459) 
89e1f7d4 (Alex Williamson 2012-07-31  460) 		vdev->barmap[index] = pci_iomap(pdev, index, 0);
89e1f7d4 (Alex Williamson 2012-07-31  461) 	}
89e1f7d4 (Alex Williamson 2012-07-31  462) 
89e1f7d4 (Alex Williamson 2012-07-31  463) 	vma->vm_private_data = vdev;
89e1f7d4 (Alex Williamson 2012-07-31 @464) 	vma->vm_flags |= (VM_IO | VM_RESERVED);
89e1f7d4 (Alex Williamson 2012-07-31  465) 	vma->vm_page_prot = pgprot_noncached(vma->vm_page_prot);
89e1f7d4 (Alex Williamson 2012-07-31  466) 
89e1f7d4 (Alex Williamson 2012-07-31  467) 	phys = (pci_resource_start(pdev, index) >> PAGE_SHIFT) + pgoff;

---
0-DAY kernel build testing backend Open Source Technology Center
Fengguang Wu, Yuanhan Liu Intel Corporation

I have already posted fixup
http://www.spinics.net/lists/linux-mm/msg42993.html

Michal Hocko
SUSE Labs