mm: fix build of split ptlock code

Commit 597d795 ('mm: do not allocate page->ptl dynamically, if spinlock_t fits to long') restructures some allocators that are compiled even if USE_SPLIT_PTLOCKS arn't used. It results in compilation failure: mm/memory.c:4282:6: error: 'struct page' has no member named 'ptl' mm/memory.c:4288:12: error: 'struct page' has no member named 'ptl' Add in the missing ifdef. Fixes: 597d795 ('mm: do not allocate page->ptl dynamically, if spinlock_t fits to long') Signed-off-by: Olof Johansson <[email protected]> Cc: Kirill A. Shutemov <[email protected]> Cc: Hugh Dickins <[email protected]> Signed-off-by: Linus Torvalds <[email protected]>
jledet · Dec 20, 2013 · 40b64ac · 40b64ac
1 parent 4773ef2
commit 40b64ac
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/mm/memory.c b/mm/memory.c
@@ -4271,7 +4271,7 @@ void copy_user_huge_page(struct page *dst, struct page *src,
 }
 #endif /* CONFIG_TRANSPARENT_HUGEPAGE || CONFIG_HUGETLBFS */
 
-#if ALLOC_SPLIT_PTLOCKS
+#if USE_SPLIT_PTE_PTLOCKS && ALLOC_SPLIT_PTLOCKS
 bool ptlock_alloc(struct page *page)
 {
 	spinlock_t *ptl;