Re: [PATCH bpf-next v4 0/2] bpf: avoid iterating duplicated files for task_file iterator

On 9/2/20 4:31 AM, Yonghong Song wrote: [...] v3 -> v4: - avoid using empty string in the CHECK macro. (Andrii) Applied, thanks!

[PATCH bpf-next v4 0/2] bpf: avoid iterating duplicated files for task_file iterator

Commit e679654a704e ("bpf: Fix a rcu_sched stall issue with bpf task/task_file iterator") introduced rate limiting in bpf_seq_read() to fix a case where traversing too many tasks and files (tens of millions of files) may cause kernel rcu stall. But rate limiting won't reduce the amount of work to t