On Fri, Feb 18, 2022 at 11:21 PM Josef Bacik <josef@xxxxxxxxxxxxxx> wrote: > > On Tue, Feb 15, 2022 at 09:17:37PM +0800, Yongji Xie wrote: > > Ping again. > > > > Hi Josef, could you take a look? > > Sorry Yongji this got lost. Again in the reconnect case we're still setting up > a long running thread, so it's not like it'll happen during a normal reclaim > path thing, it'll be acted upon by userspace. Thanks, > During creating this long running thread, we might trigger memory reclaim since workqueue will use GFP_KERNEL allocation for it. Then a deadlock can occur if the memory reclaim happens to hit the page cache on this reconnecting nbd device. Thanks, Yongji
