On Wed, Jan 19, 2022 at 11:46:16AM +0000, Praveen Kannoju wrote: > 6. Jason, the only function "rds_ib_free_mr" which accesses the > introduced bool variable "flush_ongoing" to spawn a flush worker > does not crucially impact the availability of MR's, because the > flush happens from allocation path as well when necessary. Hence > the Load-store ordering is not essentially needed here, because of > which we chose smp_rmb() and smp_wmb() over smp_load_acquire() and > smp_store_release(). That seems like a confusing statement, you added barriers which do the same things as acquire/release then say you didn't need acquire release? I think this is using barriers wrong. Jason