On Wed, Jan 20, 2016 at 10:17:23PM +0900, Tetsuo Handa wrote: > What happens if memory allocation requests from items using this workqueue > got stuck due to OOM livelock? Are pending items in this workqueue cannot > be processed because this workqueue was created without WQ_MEM_RECLAIM? If something gets stuck due to OOM livelock, anything which tries to allocate memory can hang. That's why it's called a livelock. WQ_MEM_RECLAIM or not wouldn't make any difference. > I don't know whether accessing swap memory depends on this workqueue. > But if disk driver depends on this workqueue for accessing swap partition > on the disk, some event is looping inside memory allocator will result in > unable to process disk I/O request for accessing swap partition on the disk? What you're saying is too vauge for me to decipher exactly what you have on mind. Can you please elaborate? -- tejun -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@xxxxxxxxx. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: <a href=mailto:"dont@xxxxxxxxx";> email@xxxxxxxxx </a>