diff options
| author | Steven J. Magnani <steve@digidescorp.com> | 2010-11-24 12:56:54 -0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2010-12-09 13:27:02 -0800 |
| commit | a9a275749034d3e23a7ed1ea8d784f1fe5a8d064 (patch) | |
| tree | d61e3c051d6bc35520e4f59c25bc9e9c102216e9 /mm | |
| parent | a9386a4f6cf9c1b72862ac0aa4ffe02a22c1bd5b (diff) | |
| download | lwn-a9a275749034d3e23a7ed1ea8d784f1fe5a8d064.tar.gz lwn-a9a275749034d3e23a7ed1ea8d784f1fe5a8d064.zip | |
nommu: yield CPU while disposing VM
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 <steve@digidescorp.com>
Cc: Greg Ungerer <gerg@snapgear.com>
Reviewed-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'mm')
| -rw-r--r-- | mm/nommu.c | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/mm/nommu.c b/mm/nommu.c index ebb3154d84e4..406e8d47ce49 100644 --- a/mm/nommu.c +++ b/mm/nommu.c @@ -1615,6 +1615,7 @@ void exit_mmap(struct mm_struct *mm) mm->mmap = vma->vm_next; delete_vma_from_mm(vma); delete_vma(mm, vma); + cond_resched(); } kleave(""); |