linux-next: manual merge of the akpm tree with the tip tree

[Stephen Rothwell <sfr@canb.auug.org.au>]

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Hi Andrew,

Today's linux-next merge of the akpm tree got a conflict in
include/linux/mm.h between commit 1dbd3d35fe64 ("mm/pgprot: Move the
pgprot_modify() fallback definition to mm.h") from the tip tree and
commit "mm, x86, pat: rework linear pfn-mmap tracking" from the akpm tree.

I fixed it up (see below) and can carry the fix as necessary (no action
is required).

-- 
Cheers,
Stephen Rothwell                    sfr@canb.auug.org.au

diff --cc include/linux/mm.h
index 4adea2c,a66f646..0000000
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@@ -160,37 -160,6 +160,19 @@@ extern pgprot_t protection_map[16]
  #define FAULT_FLAG_TRIED	0x40	/* second try */
  
  /*
-  * This interface is used by x86 PAT code to identify a pfn mapping that is
-  * linear over entire vma. This is to optimize PAT code that deals with
-  * marking the physical region with a particular prot. This is not for generic
-  * mm use. Note also that this check will not work if the pfn mapping is
-  * linear for a vma starting at physical address 0. In which case PAT code
-  * falls back to slow path of reserving physical range page by page.
-  */
- static inline int is_linear_pfn_mapping(struct vm_area_struct *vma)
- {
- 	return !!(vma->vm_flags & VM_PFN_AT_MMAP);
- }
- 
- static inline int is_pfn_mapping(struct vm_area_struct *vma)
- {
- 	return !!(vma->vm_flags & VM_PFNMAP);
- }
- 
- /*
 + * Some architectures (such as x86) may need to preserve certain pgprot
 + * bits, without complicating generic pgprot code.
 + *
 + * Most architectures don't care:
 + */
 +#ifndef pgprot_modify
 +static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
 +{
 +	return newprot;
 +}
 +#endif
 +
 +/*
   * vm_fault is filled by the the pagefault handler and passed to the vma's
   * ->fault function. The vma's ->fault is responsible for returning a bitmask
   * of VM_FAULT_xxx flags that give details about how the fault was handled.

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