else if (gap > MAX_GAP)
gap = MAX_GAP;
- return PAGE_ALIGN(TASK_SIZE - gap - rnd);
+ return PAGE_ALIGN(DEFAULT_MAP_WINDOW - gap - rnd);
}
#ifdef CONFIG_PPC_RADIX_MMU
struct vm_area_struct *vma;
struct vm_unmapped_area_info info;
- if (len > mm->context.addr_limit - mmap_min_addr)
+ if (unlikely(addr > mm->context.addr_limit && addr < TASK_SIZE))
+ mm->context.addr_limit = TASK_SIZE;
+
+ if (len > mm->task_size - mmap_min_addr)
return -ENOMEM;
if (flags & MAP_FIXED)
if (addr) {
addr = PAGE_ALIGN(addr);
vma = find_vma(mm, addr);
- if (mm->context.addr_limit - len >= addr && addr >= mmap_min_addr &&
+ if (mm->task_size - len >= addr && addr >= mmap_min_addr &&
(!vma || addr + len <= vma->vm_start))
return addr;
}
info.flags = 0;
info.length = len;
info.low_limit = mm->mmap_base;
- info.high_limit = mm->context.addr_limit;
info.align_mask = 0;
+
+ if (unlikely(addr > DEFAULT_MAP_WINDOW))
+ info.high_limit = mm->context.addr_limit;
+ else
+ info.high_limit = DEFAULT_MAP_WINDOW;
+
return vm_unmapped_area(&info);
}
unsigned long addr = addr0;
struct vm_unmapped_area_info info;
+ if (unlikely(addr > mm->context.addr_limit && addr < TASK_SIZE))
+ mm->context.addr_limit = TASK_SIZE;
+
/* requested length too big for entire address space */
- if (len > mm->context.addr_limit - mmap_min_addr)
+ if (len > mm->task_size - mmap_min_addr)
return -ENOMEM;
if (flags & MAP_FIXED)
if (addr) {
addr = PAGE_ALIGN(addr);
vma = find_vma(mm, addr);
- if (mm->context.addr_limit - len >= addr && addr >= mmap_min_addr &&
+ if (mm->task_size - len >= addr && addr >= mmap_min_addr &&
(!vma || addr + len <= vma->vm_start))
return addr;
}
info.low_limit = max(PAGE_SIZE, mmap_min_addr);
info.high_limit = mm->mmap_base;
info.align_mask = 0;
+
+ if (addr > DEFAULT_MAP_WINDOW)
+ info.high_limit += mm->context.addr_limit - DEFAULT_MAP_WINDOW;
+
addr = vm_unmapped_area(&info);
+ if (!(addr & ~PAGE_MASK))
+ return addr;
+ VM_BUG_ON(addr != -ENOMEM);
/*
* A failed mmap() very likely causes application failure,
* can happen with large stack limits and large mmap()
* allocations.
*/
- if (addr & ~PAGE_MASK) {
- VM_BUG_ON(addr != -ENOMEM);
- info.flags = 0;
- info.low_limit = TASK_UNMAPPED_BASE;
- info.high_limit = mm->context.addr_limit;
- addr = vm_unmapped_area(&info);
- }
-
- return addr;
+ return radix__arch_get_unmapped_area(filp, addr0, len, pgoff, flags);
}
static void radix__arch_pick_mmap_layout(struct mm_struct *mm,