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authorKirill A. Shutemov <kirill.shutemov@linux.intel.com>2014-08-06 16:08:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2014-08-06 18:01:22 -0700
commit3a91053aebb23205caf67927be00c54cef6424b3 (patch)
tree5ad698d735a0513f1a3e918a4696a5931cafdd55 /mm/memory.c
parentaecd6f44266c13b8709245b21ded2d19291ab070 (diff)
downloadlinux-3a91053aebb23205caf67927be00c54cef6424b3.tar.bz2
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>
Diffstat (limited to 'mm/memory.c')
-rw-r--r--mm/memory.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/mm/memory.c b/mm/memory.c
index dc47261c4686..5596d77e8656 100644
--- a/mm/memory.c
+++ b/mm/memory.c
@@ -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)