Re: soft lockup in fanotify_read

2020-07-14 Thread Francesco Ruggeri
Thanks for the replies and workaround suggestions! Francesco

Re: soft lockup in fanotify_read

2020-07-14 Thread Jan Kara
Hello! On Mon 13-07-20 19:54:17, Francesco Ruggeri wrote: > We are getting this soft lockup in fanotify_read. > The reason is that this code does not seem to scale to cases where there > are big bursts of events generated by fanotify_handle_event. > fanotify_read acquires group->no

Re: soft lockup in fanotify_read

2020-07-14 Thread Amir Goldstein
On Tue, Jul 14, 2020 at 5:54 AM Francesco Ruggeri wrote: > > We are getting this soft lockup in fanotify_read. > The reason is that this code does not seem to scale to cases where there > are big bursts of events generated by fanotify_handle_event. > fanotify_read

soft lockup in fanotify_read

2020-07-13 Thread Francesco Ruggeri
We are getting this soft lockup in fanotify_read. The reason is that this code does not seem to scale to cases where there are big bursts of events generated by fanotify_handle_event. fanotify_read acquires group->notification_lock for each event. fanotify_handle_event uses the lock to add