The patch titled
nommu: yield CPU while disposing VM
has been added to the -mm tree. Its filename is
nommu-yield-cpu-while-disposing-vm.patch
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------------------------------------------------------
Subject: nommu: yield CPU while disposing VM
From: "Steven J. Magnani" <steve@xxxxxxxxxxxxxxx>
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@xxxxxxxxxxxxxxx>
Cc: Greg Ungerer <gerg@xxxxxxxxxxxx>
Cc: <stable@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
mm/nommu.c | 1 +
1 file changed, 1 insertion(+)
diff -puN mm/nommu.c~nommu-yield-cpu-while-disposing-vm mm/nommu.c
--- a/mm/nommu.c~nommu-yield-cpu-while-disposing-vm
+++ a/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("");
_
Patches currently in -mm which might be from steve@xxxxxxxxxxxxxxx are
nommu-yield-cpu-while-disposing-vm.patch
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