[PATCH V2] mm/gup: Remove write argument in gup_fast_permitted()

[ira . weiny]

From: Ira Weiny <ira.we...@intel.com>

The write argument is unused in gup_fast_permitted() so remove it.

Acked-by: Kirill A. Shutemov <kirill.shute...@linux.intel.com>
Signed-off-by: Ira Weiny <ira.we...@intel.com>

---
Changes since V1
        Clean up commit message

 arch/x86/include/asm/pgtable_64.h | 3 +--
 mm/gup.c                          | 6 +++---
 2 files changed, 4 insertions(+), 5 deletions(-)

diff --git a/arch/x86/include/asm/pgtable_64.h 
b/arch/x86/include/asm/pgtable_64.h
index 9c85b54bf03c..0bb566315621 100644
--- a/arch/x86/include/asm/pgtable_64.h
+++ b/arch/x86/include/asm/pgtable_64.h
@@ -259,8 +259,7 @@ extern void init_extra_mapping_uc(unsigned long phys, 
unsigned long size);
 extern void init_extra_mapping_wb(unsigned long phys, unsigned long size);
 
 #define gup_fast_permitted gup_fast_permitted
-static inline bool gup_fast_permitted(unsigned long start, int nr_pages,
-               int write)
+static inline bool gup_fast_permitted(unsigned long start, int nr_pages)
 {
        unsigned long len, end;
 
diff --git a/mm/gup.c b/mm/gup.c
index 05acd7e2eb22..b63e88eca31b 100644
--- a/mm/gup.c
+++ b/mm/gup.c
@@ -1786,7 +1786,7 @@ static void gup_pgd_range(unsigned long addr, unsigned 
long end,
  * Check if it's allowed to use __get_user_pages_fast() for the range, or
  * we need to fall back to the slow version:
  */
-bool gup_fast_permitted(unsigned long start, int nr_pages, int write)
+bool gup_fast_permitted(unsigned long start, int nr_pages)
 {
        unsigned long len, end;
 
@@ -1828,7 +1828,7 @@ int __get_user_pages_fast(unsigned long start, int 
nr_pages, int write,
         * block IPIs that come from THPs splitting.
         */
 
-       if (gup_fast_permitted(start, nr_pages, write)) {
+       if (gup_fast_permitted(start, nr_pages)) {
                local_irq_save(flags);
                gup_pgd_range(start, end, write, pages, &nr);
                local_irq_restore(flags);
@@ -1870,7 +1870,7 @@ int get_user_pages_fast(unsigned long start, int 
nr_pages, int write,
        if (unlikely(!access_ok((void __user *)start, len)))
                return -EFAULT;
 
-       if (gup_fast_permitted(start, nr_pages, write)) {
+       if (gup_fast_permitted(start, nr_pages)) {
                local_irq_disable();
                gup_pgd_range(addr, end, write, pages, &nr);
                local_irq_enable();
-- 
2.20.1