x86: remove the duplicated arch/x86/ia32/mmap32.c

Use mmap_32.c in arch/x86/mm instead
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Signed-off-by: NIngo Molnar <mingo@elte.hu>

arch/x86/ia32/Makefile

@@ -3,8 +3,7 @@
 #
 
 obj-$(CONFIG_IA32_EMULATION) := ia32entry.o sys_ia32.o ia32_signal.o tls32.o \
-	ia32_binfmt.o fpu32.o ptrace32.o syscall32.o syscall32_syscall.o \
-	mmap32.o
+	ia32_binfmt.o fpu32.o ptrace32.o syscall32.o syscall32_syscall.o
 
 sysv-$(CONFIG_SYSVIPC) := ipc32.o
 obj-$(CONFIG_IA32_EMULATION) += $(sysv-y)

arch/x86/ia32/mmap32.c

-/*
- *  linux/arch/x86_64/ia32/mm/mmap.c
- *
- *  flexible mmap layout support
- *
- * Based on the i386 version which was
- *
- * Copyright 2003-2004 Red Hat Inc., Durham, North Carolina.
- * All Rights Reserved.
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
- *
- *
- * Started by Ingo Molnar <mingo@elte.hu>
- */
-
-#include <linux/personality.h>
-#include <linux/mm.h>
-#include <linux/random.h>
-#include <linux/sched.h>
-
-/*
- * Top of mmap area (just below the process stack).
- *
- * Leave an at least ~128 MB hole.
- */
-#define MIN_GAP (128 * 1024 * 1024)
-#define MAX_GAP (TASK_SIZE / 6 * 5)
-
-static inline unsigned long mmap_base(struct mm_struct *mm)
-{
-	unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
-	unsigned long random_factor = 0;
-
-	if (current->flags & PF_RANDOMIZE)
-		random_factor = get_random_int() % (1024 * 1024);
-
-	if (gap < MIN_GAP)
-		gap = MIN_GAP;
-	else if (gap > MAX_GAP)
-		gap = MAX_GAP;
-
-	return PAGE_ALIGN(TASK_SIZE - gap - random_factor);
-}
-
-/*
- * This function, called very early during the creation of a new
- * process VM image, sets up which VM layout function to use:
- */
-void ia32_pick_mmap_layout(struct mm_struct *mm)
-{
-	/*
-	 * Fall back to the standard layout if the personality
-	 * bit is set, or if the expected stack growth is unlimited:
-	 */
-	if (sysctl_legacy_va_layout ||
-	    (current->personality & ADDR_COMPAT_LAYOUT) ||
-	    current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY) {
-		mm->mmap_base = TASK_UNMAPPED_BASE;
-		mm->get_unmapped_area = arch_get_unmapped_area;
-		mm->unmap_area = arch_unmap_area;
-	} else {
-		mm->mmap_base = mmap_base(mm);
-		mm->get_unmapped_area = arch_get_unmapped_area_topdown;
-		mm->unmap_area = arch_unmap_area_topdown;
-	}
-}

arch/x86/mm/Makefile_64

@@ -7,4 +7,4 @@ obj-$(CONFIG_HUGETLB_PAGE) += hugetlbpage.o
 obj-$(CONFIG_NUMA) += numa_64.o
 obj-$(CONFIG_K8_NUMA) += k8topology_64.o
 obj-$(CONFIG_ACPI_NUMA) += srat_64.o
-
+obj-$(CONFIG_IA32_EMULATION) += mmap_32.o

arch/x86/mm/mmap_32.c

@@ -57,7 +57,11 @@ static inline unsigned long mmap_base(struct mm_struct *mm)
  * This function, called very early during the creation of a new
  * process VM image, sets up which VM layout function to use:
  */
+#ifdef CONFIG_X86_32
 void arch_pick_mmap_layout(struct mm_struct *mm)
+#else
+void ia32_pick_mmap_layout(struct mm_struct *mm)
+#endif
 {
 	/*
 	 * Fall back to the standard layout if the personality