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mm: use vm_unmapped_area() on alpha architecture

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Update the alpha arch_get_unmapped_area function to make use of
vm_unmapped_area() instead of implementing a brute force search.

Signed-off-by: Michel Lespinasse <[email protected]>
Acked-by: Rik van Riel <[email protected]>
Cc: Richard Henderson <[email protected]>
Cc: Ivan Kokshaysky <[email protected]>
Cc: Matt Turner <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
This commit is contained in:
Michel Lespinasse 2013-02-21 16:43:01 -08:00 • committed by Linus Torvalds
commit 6d1c7ccae9
1 changed files with 9 additions and 11 deletions
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18
arch/alpha/kernel/osf_sys.c
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@ -1300,17 +1300,15 @@ static unsigned long
arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
unsigned long limit)
{
struct vm_area_struct *vma = find_vma(current->mm, addr);
struct vm_unmapped_area_info info;
while (1) {
/* At this point: (!vma || addr < vma->vm_end). */
if (limit - len < addr)
return -ENOMEM;
if (!vma || addr + len <= vma->vm_start)
return addr;
addr = vma->vm_end;
vma = vma->vm_next;
}
info.flags = 0;
info.length = len;
info.low_limit = addr;
info.high_limit = limit;
info.align_mask = 0;
info.align_offset = 0;
return vm_unmapped_area(&info);
}
unsigned long