Messages in this thread | | | Date | Wed, 5 Aug 2015 11:50:16 -0700 | From | "" <> | Subject | Re: [PATCH V3] staging: android: lowmemorykiller: imporve lmk to avoid deadlock issue |
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On Mon, Aug 03, 2015 at 08:26:40AM +0000, Wang, Biao wrote: > Consider the following case: > Task A trigger lmk with a lock held, while task B try to get this lock, but unfortunately B is the very culprit task lmk select to kill. Then B will never be killed, and A will forever select B to kill. > Such dead lock will trigger softlock up issue. > > This patch try to pick the next task to break this loop. > > Signed-off-by: Wang Biao <biao.wang@intel.com> > Reviewed-by: Zhang Di <di.zhang@intel.com> > --- > drivers/staging/android/lowmemorykiller.c | 5 +++-- > 1 file changed, 3 insertions(+), 2 deletions(-)
Please address Dave's review comments, I'll not take this as-is, sorry.
greg k-h
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