linux-kernel - [PATCH trivial] include/asm-generic/pgtable.h: Notice about coding styles

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Date:	Sun, 13 Dec 2015 17:08:14 +0800
From:	Chen Gang <chengang@...ndsoft.com.cn>
To:	arnd@...db.de, trivial@...nel.org
CC:	Linux-Arch <linux-arch@...r.kernel.org>,
	linux-kernel@...r.kernel.org,
	Andrew Morton <akpm@...ux-foundation.org>,
	Chen Gang <gang.chen.5i5j@...il.com>, chenwei@...ndsoft.com.cn
Subject: [PATCH trivial] include/asm-generic/pgtable.h: Notice about coding
 styles


Notice about 80 columns, and function parameters alignment.

Export zero_pfn only once.

Remove pte variable in ptep_get_and_clear_full().

Signed-off-by: Chen Gang <gang.chen.5i5j@...il.com>
---
 include/asm-generic/pgtable.h | 16 +++++++---------
 1 file changed, 7 insertions(+), 9 deletions(-)

diff --git a/include/asm-generic/pgtable.h b/include/asm-generic/pgtable.h
index 63abda1..aecf0141 100644
--- a/include/asm-generic/pgtable.h
+++ b/include/asm-generic/pgtable.h
@@ -135,8 +135,8 @@ static inline pmd_t pmdp_huge_get_and_clear(struct mm_struct *mm,
 #ifndef __HAVE_ARCH_PMDP_HUGE_GET_AND_CLEAR_FULL
 #ifdef CONFIG_TRANSPARENT_HUGEPAGE
 static inline pmd_t pmdp_huge_get_and_clear_full(struct mm_struct *mm,
-					    unsigned long address, pmd_t *pmdp,
-					    int full)
+						 unsigned long address,
+						 pmd_t *pmdp, int full)
 {
 	return pmdp_huge_get_and_clear(mm, address, pmdp);
 }
@@ -148,9 +148,7 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm,
 					    unsigned long address, pte_t *ptep,
 					    int full)
 {
-	pte_t pte;
-	pte = ptep_get_and_clear(mm, address, ptep);
-	return pte;
+	return ptep_get_and_clear(mm, address, ptep);
 }
 #endif
 
@@ -183,7 +181,8 @@ extern pmd_t pmdp_huge_clear_flush(struct vm_area_struct *vma,
 
 #ifndef __HAVE_ARCH_PTEP_SET_WRPROTECT
 struct mm_struct;
-static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long address, pte_t *ptep)
+static inline void ptep_set_wrprotect(struct mm_struct *mm,
+				      unsigned long address, pte_t *ptep)
 {
 	pte_t old_pte = *ptep;
 	set_pte_at(mm, address, ptep, pte_wrprotect(old_pte));
@@ -583,10 +582,11 @@ extern void untrack_pfn(struct vm_area_struct *vma, unsigned long pfn,
 			unsigned long size);
 #endif
 
+extern unsigned long zero_pfn;
+
 #ifdef __HAVE_COLOR_ZERO_PAGE
 static inline int is_zero_pfn(unsigned long pfn)
 {
-	extern unsigned long zero_pfn;
 	unsigned long offset_from_zero_pfn = pfn - zero_pfn;
 	return offset_from_zero_pfn <= (zero_page_mask >> PAGE_SHIFT);
 }
@@ -596,13 +596,11 @@ static inline int is_zero_pfn(unsigned long pfn)
 #else
 static inline int is_zero_pfn(unsigned long pfn)
 {
-	extern unsigned long zero_pfn;
 	return pfn == zero_pfn;
 }
 
 static inline unsigned long my_zero_pfn(unsigned long addr)
 {
-	extern unsigned long zero_pfn;
 	return zero_pfn;
 }
 #endif
-- 
1.9.3
--
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