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include: mman: use bool instead of int for the return value of arch_validate_prot

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For pure bool function's return value, bool is a little better more or
less than int.

Link: http://lkml.kernel.org/r/1469331815-2026-1-git-send-email-chengang@emindsoft.com.cn
Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Acked-by: Michael Ellerman <mpe@ellerman.id.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Chen Gang
2016-08-02 14:03:42 -07:00
committed by Linus Torvalds
parent bd804ba125
commit 949bed2f57
2 changed files with 5 additions and 5 deletions
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8
arch/powerpc/include/asm/mman.h
View File

@@ -31,13 +31,13 @@ static inline pgprot_t arch_vm_get_page_prot(unsigned long vm_flags)
} }
#define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags) #define arch_vm_get_page_prot(vm_flags) arch_vm_get_page_prot(vm_flags)
static inline int arch_validate_prot(unsigned long prot) static inline bool arch_validate_prot(unsigned long prot)
{ {
if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO)) if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_SAO))
return 0; return false;
if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO)) if ((prot & PROT_SAO) && !cpu_has_feature(CPU_FTR_SAO))
return 0; return false;
return 1; return true;
} }
#define arch_validate_prot(prot) arch_validate_prot(prot) #define arch_validate_prot(prot) arch_validate_prot(prot)

2
include/linux/mman.h
View File

@@ -49,7 +49,7 @@ static inline void vm_unacct_memory(long pages)
* *
* Returns true if the prot flags are valid * Returns true if the prot flags are valid
*/ */
static inline int arch_validate_prot(unsigned long prot) static inline bool arch_validate_prot(unsigned long prot)
{ {
return (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM)) == 0; return (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM)) == 0;
} }