Merge branch 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 mm cleanup from Ingo Molnar:
 "A single GUP cleanup"

* 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  mm/gup: Remove the 'write' parameter from gup_fast_permitted()
这个提交包含在:
Linus Torvalds
2019-03-07 17:43:58 -08:00
当前提交 f86727f8bd
修改 2 个文件,包含 4 行新增5 行删除

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@@ -1939,7 +1939,7 @@ 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;
@@ -1981,7 +1981,7 @@ 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);
@@ -2023,7 +2023,7 @@ 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();