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authorYang Shi <yang.shi@linux.alibaba.com>2020-08-12 04:31:48 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2020-08-12 20:57:57 +0300
commit4958e4d86ecb011a81f5d80ce2023ef9f10692d8 (patch)
tree1c962608c56d83ce1d58188cfe1091f303565182 /include/linux/huge_mm.h
parentb0fc0f3fca80cf8ea8631eaec6b922bca4c4c2dd (diff)
downloadlinux-4958e4d86ecb011a81f5d80ce2023ef9f10692d8.tar.xz
mm: thp: remove debug_cow switch
Since commit 3917c80280c93a7123f ("thp: change CoW semantics for anon-THP"), the CoW page fault of THP has been rewritten, debug_cow is not used anymore. So, just remove it. Signed-off-by: Yang Shi <yang.shi@linux.alibaba.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Reviewed-by: Zi Yan <ziy@nvidia.com> Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Link: http://lkml.kernel.org/r/1592270980-116062-1-git-send-email-yang.shi@linux.alibaba.com Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/linux/huge_mm.h')
-rw-r--r--include/linux/huge_mm.h7
1 files changed, 0 insertions, 7 deletions
diff --git a/include/linux/huge_mm.h b/include/linux/huge_mm.h
index 17c4c4975145..467302056e17 100644
--- a/include/linux/huge_mm.h
+++ b/include/linux/huge_mm.h
@@ -181,13 +181,6 @@ static inline bool transhuge_vma_suitable(struct vm_area_struct *vma,
#define transparent_hugepage_use_zero_page() \
(transparent_hugepage_flags & \
(1<<TRANSPARENT_HUGEPAGE_USE_ZERO_PAGE_FLAG))
-#ifdef CONFIG_DEBUG_VM
-#define transparent_hugepage_debug_cow() \
- (transparent_hugepage_flags & \
- (1<<TRANSPARENT_HUGEPAGE_DEBUG_COW_FLAG))
-#else /* CONFIG_DEBUG_VM */
-#define transparent_hugepage_debug_cow() 0
-#endif /* CONFIG_DEBUG_VM */
extern unsigned long thp_get_unmapped_area(struct file *filp,
unsigned long addr, unsigned long len, unsigned long pgoff,