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Subject[PATCH 3/3] [PATCH x86_64] during VM oom condition, kill all threads in process group
Date

When we get into a state where VM has ran out of memory, and it's time to
thwack a process, we should take out the entire process group, rather than
just one thread.

Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com>
---

arch/x86_64/mm/fault.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletions(-)

diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 6ada723..2a3060e 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -562,8 +562,10 @@ out_of_memory:
goto again;
}
printk("VM: killing process %s\n", tsk->comm);
- if (error_code & 4)
+ if (error_code & 4) {
+ zap_other_threads(tsk);
do_exit(SIGKILL);
+ }
goto no_context;

do_sigbus:

-
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