Commit 40b64acd authored Dec 20, 2013 by Olof Johansson Committed by Linus Torvalds Dec 20, 2013

mm: fix build of split ptlock code



Commit 597d795a ('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: 597d795a ('mm: do not allocate page->ptl dynamically, if spinlock_t fits to long')
Signed-off-by: Olof Johansson <olof@lixom.net>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Hugh Dickins <hughd@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent 4773ef22

mm/memory.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -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;

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