Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> writes: > On Wed, 2 Aug 2017 13:44:57 -0400 Jonathan Toppins <jtoppins@xxxxxxxxxx> wrote: > >> The RDMA subsystem can generate several thousand of these messages per >> second eventually leading to a kernel crash. Ratelimit these messages >> to prevent this crash. > > Well... why are all these EBUSY's occurring? It sounds inefficient (at > least) but if it is expected, normal and unavoidable then perhaps we > should just remove that message altogether? We see them on powerpc sometimes when CMA is unable to make large allocations for the hash table of a KVM guest. At least in that context they're not useful, CMA will try the allocation again, and if it really can't allocate then CMA will print more useful information itself. So I'd vote for dropping the message and letting the callers decide what to do. cheers -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
