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Commit 6d1c7cca authored by Michel Lespinasse's avatar Michel Lespinasse Committed by Linus Torvalds
Browse files

mm: use vm_unmapped_area() on alpha architecture 



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: default avatarMichel Lespinasse <walken@google.com>
Acked-by: default avatarRik 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: default avatarAndrew Morton <akpm@linux-foundation.org>
Signed-off-by: default avatarLinus Torvalds <torvalds@linux-foundation.org>
parent 182dcfd6

arch/alpha/kernel/osf_sys.c

+9 −11
Original line number Diff line number Diff line
@@ -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);



	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;

	}

	struct vm_unmapped_area_info info;



	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