linux-kernel - [PATCH] nommu: stub expand

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Date:	Fri, 1 Jun 2007 21:09:21 +1000
From:	Greg Ungerer <gerg@...pgear.com>
To:	torvalds@...ux-foundation.org
Cc:	gerg@...inux.org, linux-kernel@...r.kernel.org
Subject: [PATCH] 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@...inux.org>



diff -Naur linux-2.6.21/mm/nommu.c linux-2.6.21-uc0/mm/nommu.c
--- linux-2.6.21/mm/nommu.c	2007-05-01 17:09:34.000000000 +1000
+++ linux-2.6.21-uc0/mm/nommu.c	2007-05-01 17:14:27.000000000 +1000
@@ -359,6 +359,11 @@
 	return find_vma(mm, addr);
 }
 
+int expand_stack(struct vm_area_struct *vma, unsigned long address)
+{
+	return -ENOMEM;
+}
+
 /*
  * look up the first VMA exactly that exactly matches addr
  * - should be called with mm->mmap_sem at least held readlocked
-
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