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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 <walken@google.com>
Acked-by: Rik van Riel <riel@redhat.com>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Matt Turner <mattst88@gmail.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Michel Lespinasse 2013-02-21 16:43:01 -08:00 • committed by Linus Torvalds
parent 182dcfd648
commit 6d1c7ccae9
1 changed files with 8 additions and 10 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, arch_get_unmapped_area_1(unsigned long addr, unsigned long len,
unsigned long limit) unsigned long limit)
{ {
struct vm_area_struct *vma = find_vma(current->mm, addr); struct vm_unmapped_area_info info;
while (1) { info.flags = 0;
/* At this point: (!vma || addr < vma->vm_end). */ info.length = len;
if (limit - len < addr) info.low_limit = addr;
return -ENOMEM; info.high_limit = limit;
if (!vma || addr + len <= vma->vm_start) info.align_mask = 0;
return addr; info.align_offset = 0;
addr = vma->vm_end; return vm_unmapped_area(&info);
vma = vma->vm_next;
}
} }
unsigned long unsigned long