x86: cleanup - eliminate numbers in LDT allocation code

This patch eliminates numbers in LDT allocation code
trying to make it clear to understand from where
these numbers come.

No code changed:

   text    data     bss     dec     hex filename
   1896       0       0    1896     768 ldt.o.before
   1896       0       0    1896     768 ldt.o.after
md5:
 6cbec8705008ddb4b704aade60bceda3  ldt.o.before.asm
 6cbec8705008ddb4b704aade60bceda3  ldt.o.after.asm

Signed-off-by: Cyrill Gorcunov <gorcunov@gmail.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

1 files changed, 2 insertions, 1 deletions

diff --git a/arch/x86/kernel/ldt.c b/arch/x86/kernel/ldt.c
index 8a7660c8394a..0224c3637c73 100644
--- a/arch/x86/kernel/ldt.c
+++ b/arch/x86/kernel/ldt.c
@@ -35,7 +35,8 @@ static int alloc_ldt(mm_context_t *pc, int mincount, int reload)
         if (mincount <= pc->size)
                 return 0;
         oldsize = pc->size;
-        mincount = (mincount + 511) & (~511);
+        mincount = (mincount + (PAGE_SIZE / LDT_ENTRY_SIZE - 1)) &
+                        (~(PAGE_SIZE / LDT_ENTRY_SIZE - 1));
         if (mincount * LDT_ENTRY_SIZE > PAGE_SIZE)
                 newldt = vmalloc(mincount * LDT_ENTRY_SIZE);
         else