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authorSteven J. Magnani <steve@digidescorp.com>2010-11-24 12:56:54 -0800
committerLinus Torvalds <torvalds@linux-foundation.org>2010-11-25 06:50:38 +0900
commit04c3496152394d17e3bc2316f9731ee3e8a026bc (patch)
tree1c0a1275a3a3ef3f4aad36fd4cd5500980f5f0d7
parent3a3a1af37f0405d15c0b64a6ce7f4878084442e0 (diff)
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nommu: yield CPU while disposing VM
Depending on processor speed, page size, and the amount of memory a process is allowed to amass, cleanup of a large VM may freeze the system for many seconds. This can result in a watchdog timeout. Make sure other tasks receive some service when cleaning up large VMs. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Cc: Greg Ungerer <gerg@snapgear.com> Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Cc: <stable@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
-rw-r--r--mm/nommu.c1
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c
index 3613517c759..27a9ac58851 100644
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1717,6 +1717,7 @@ void exit_mmap(struct mm_struct *mm)
mm->mmap = vma->vm_next;
delete_vma_from_mm(vma);
delete_vma(mm, vma);
+ cond_resched();
}
kleave("");