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nommu: stub expand_stack() for nommu case
Be consistent with VM mmap, implement expand_stack(). We can't actually do anything other than return an error in the no MMU case though. Signed-off-by: Greg Ungerer <gerg@uclinux.org> Cc: David Howells <dhowells@redhat.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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@ -367,6 +367,11 @@ struct vm_area_struct *find_extend_vma(struct mm_struct *mm, unsigned long addr)
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return find_vma(mm, addr);
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}
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int expand_stack(struct vm_area_struct *vma, unsigned long address)
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{
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return -ENOMEM;
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}
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/*
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* look up the first VMA exactly that exactly matches addr
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* - should be called with mm->mmap_sem at least held readlocked
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