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Groups > linux.kernel > #1201058
| From | "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH V3] staging: android: lowmemorykiller: imporve lmk to avoid deadlock issue |
| Date | 2015-08-05 21:00 +0200 |
| Message-ID | <pUc4W-1s6-5@gated-at.bofh.it> (permalink) |
| References | <pTji9-5Zo-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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Re: [PATCH V3] staging: android: lowmemorykiller: imporve lmk to avoid deadlock issue "gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org> - 2015-08-05 21:00 +0200
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