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Diffstat (limited to 'arch/parisc/kernel/sys_parisc.c')
-rw-r--r--arch/parisc/kernel/sys_parisc.c54
1 files changed, 1 insertions, 53 deletions
diff --git a/arch/parisc/kernel/sys_parisc.c b/arch/parisc/kernel/sys_parisc.c
index 9915062d5243..ab896eff7a1d 100644
--- a/arch/parisc/kernel/sys_parisc.c
+++ b/arch/parisc/kernel/sys_parisc.c
@@ -161,7 +161,7 @@ static unsigned long arch_get_unmapped_area_common(struct file *filp,
}
info.flags = 0;
- info.low_limit = mm->mmap_legacy_base;
+ info.low_limit = mm->mmap_base;
info.high_limit = mmap_upper_limit(NULL);
return vm_unmapped_area(&info);
}
@@ -181,58 +181,6 @@ unsigned long arch_get_unmapped_area_topdown(struct file *filp,
addr, len, pgoff, flags, DOWN);
}
-static int mmap_is_legacy(void)
-{
- if (current->personality & ADDR_COMPAT_LAYOUT)
- return 1;
-
- /* parisc stack always grows up - so a unlimited stack should
- * not be an indicator to use the legacy memory layout.
- * if (rlimit(RLIMIT_STACK) == RLIM_INFINITY)
- * return 1;
- */
-
- return sysctl_legacy_va_layout;
-}
-
-static unsigned long mmap_rnd(void)
-{
- unsigned long rnd = 0;
-
- if (current->flags & PF_RANDOMIZE)
- rnd = get_random_u32() & MMAP_RND_MASK;
-
- return rnd << PAGE_SHIFT;
-}
-
-unsigned long arch_mmap_rnd(void)
-{
- return (get_random_u32() & MMAP_RND_MASK) << PAGE_SHIFT;
-}
-
-static unsigned long mmap_legacy_base(void)
-{
- return TASK_UNMAPPED_BASE + mmap_rnd();
-}
-
-/*
- * This function, called very early during the creation of a new
- * process VM image, sets up which VM layout function to use:
- */
-void arch_pick_mmap_layout(struct mm_struct *mm, struct rlimit *rlim_stack)
-{
- mm->mmap_legacy_base = mmap_legacy_base();
- mm->mmap_base = mmap_upper_limit(rlim_stack);
-
- if (mmap_is_legacy()) {
- mm->mmap_base = mm->mmap_legacy_base;
- mm->get_unmapped_area = arch_get_unmapped_area;
- } else {
- mm->get_unmapped_area = arch_get_unmapped_area_topdown;
- }
-}
-
-
asmlinkage unsigned long sys_mmap2(unsigned long addr, unsigned long len,
unsigned long prot, unsigned long flags, unsigned long fd,
unsigned long pgoff)