Commit 3a91053a authored Aug 06, 2014 by Kirill A. Shutemov Committed by Linus Torvalds Aug 06, 2014

mm: mark fault_around_bytes __read_mostly

fault_around_bytes can only be changed via debugfs.  Let's mark it
read-mostly.

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Suggested-by: David Rientjes <rientjes@google.com>
Acked-by: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Cc: Andrey Ryabinin <a.ryabinin@samsung.com>
Cc: Sasha Levin <sasha.levin@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

parent aecd6f44

mm/memory.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -2766,7 +2766,8 @@ void do_set_pte(struct vm_area_struct *vma, unsigned long address,
		update_mmu_cache(vma, address, pte);
		}

		static unsigned long fault_around_bytes = rounddown_pow_of_two(65536);
		static unsigned long fault_around_bytes __read_mostly =
		rounddown_pow_of_two(65536);

		#ifdef CONFIG_DEBUG_FS
		static int fault_around_bytes_get(void data, u64 val)