This is a note to let you know that I've just added the patch titled
nommu: yield CPU while disposing VM
to the 2.6.36-stable tree which can be found at:
http://www.kernel.org/git/?p=linux/kernel/git/stable/stable-queue.git;a=summary
The filename of the patch is:
nommu-yield-cpu-while-disposing-vm.patch
and it can be found in the queue-2.6.36 subdirectory.
If you, or anyone else, feels it should not be added to the stable tree,
please let <[email protected]> know about it.
>From 04c3496152394d17e3bc2316f9731ee3e8a026bc Mon Sep 17 00:00:00 2001
From: Steven J. Magnani <[email protected]>
Date: Wed, 24 Nov 2010 12:56:54 -0800
Subject: nommu: yield CPU while disposing VM
From: Steven J. Magnani <[email protected]>
commit 04c3496152394d17e3bc2316f9731ee3e8a026bc upstream.
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 <[email protected]>
Cc: Greg Ungerer <[email protected]>
Reviewed-by: KOSAKI Motohiro <[email protected]>
Signed-off-by: Andrew Morton <[email protected]>
Signed-off-by: Linus Torvalds <[email protected]>
Signed-off-by: Greg Kroah-Hartman <[email protected]>
---
mm/nommu.c | 1 +
1 file changed, 1 insertion(+)
--- a/mm/nommu.c
+++ b/mm/nommu.c
@@ -1668,6 +1668,7 @@ 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 stable-queue which might be from [email protected] are
queue-2.6.36/nommu-yield-cpu-while-disposing-vm.patch
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