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mm: move phys_mem_access_prot_allowed() declaration to pgtable.h

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We get 1 warning when building kernel with W=1:

  drivers/char/mem.c:220:12: warning: no previous prototype for 'phys_mem_access_prot_allowed' [-Wmissing-prototypes]
   int __weak phys_mem_access_prot_allowed(struct file *file,

In fact, its declaration is spreading to several header files in
different architecture, but need to be declare in common header file.

So this patch moves phys_mem_access_prot_allowed() to pgtable.h.

Link: http://lkml.kernel.org/r/[email protected]
Signed-off-by: Baoyou Xie <[email protected]>
Acked-by: Thomas Gleixner <[email protected]>
Acked-by: Ralf Baechle <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Baoyou Xie 2016-10-07 17:00:55 -07:00 • committed by Linus Torvalds
commit 08ea8c07fb
3 changed files with 3 additions and 4 deletions
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2
arch/mips/include/asm/pgtable.h
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@ -673,8 +673,6 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
struct file;
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t vma_prot);
int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
unsigned long size, pgprot_t *vma_prot);
#endif
/*