On Thu, 24 Aug 2017 13:15:33 +0000 "liujian (CE)" <liujia...@huawei.com> wrote: > Hello, > > With below patch we met one issue. > https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?h=v4.13-rc6&id=6d7b857d541e > > the issue: > Ip_defrag fail caused by frag_mem_limit reached 4M(frags.high_thresh). > At this moment,sum_frag_mem_limit is about 10K. > and my test machine's cpu num is 64. > > Can i only change frag_mem_limit to sum_ frag_mem_limit? > > > diff --git a/net/ipv4/inet_fragment.c b/net/ipv4/inet_fragment.c > index 96e95e8..f09c00b 100644 > --- a/net/ipv4/inet_fragment.c > +++ b/net/ipv4/inet_fragment.c > @@ -120,7 +120,7 @@ static void inet_frag_secret_rebuild(struct inet_frags *f) > static bool inet_fragq_should_evict(const struct inet_frag_queue *q) > { > return q->net->low_thresh == 0 || > - frag_mem_limit(q->net) >= q->net->low_thresh; > + sum_frag_mem_limit(q->net) >= q->net->low_thresh; > } > > static unsigned int > @@ -355,7 +355,7 @@ static struct inet_frag_queue *inet_frag_alloc(struct > netns_frags *nf, > { > struct inet_frag_queue *q; > > - if (!nf->high_thresh || frag_mem_limit(nf) > nf->high_thresh) { > + if (!nf->high_thresh || sum_frag_mem_limit(nf) > nf->high_thresh) { > inet_frag_schedule_worker(f); > return NULL; > } > @@ -396,7 +396,7 @@ struct inet_frag_queue *inet_frag_find(struct netns_frags > *nf, > struct inet_frag_queue *q; > int depth = 0; > > - if (frag_mem_limit(nf) > nf->low_thresh) > + if (sum_frag_mem_limit(nf) > nf->low_thresh) > inet_frag_schedule_worker(f); > > hash &= (INETFRAGS_HASHSZ - 1); > -- > > Thank you for your time.
What kernel version have you seen this issue with? As far as I remember, this issue have been fixed before... -- Best regards, Jesper Dangaard Brouer MSc.CS, Principal Kernel Engineer at Red Hat LinkedIn: http://www.linkedin.com/in/brouer
