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Date:   Mon, 18 Jul 2022 10:40:16 +0000
To:     Wen Gu <>
Subject: Re: [PATCH net-next v2 0/6] net/smc: Introduce virtually contiguous
 buffers for SMC-R


This series was applied to netdev/net-next.git (master)
by David S. Miller <>:

On Thu, 14 Jul 2022 17:43:59 +0800 you wrote:
> On long-running enterprise production servers, high-order contiguous
> memory pages are usually very rare and in most cases we can only get
> fragmented pages.
> When replacing TCP with SMC-R in such production scenarios, attempting
> to allocate high-order physically contiguous sndbufs and RMBs may result
> in frequent memory compaction, which will cause unexpected hung issue
> and further stability risks.
> [...]

Here is the summary with links:
  - [net-next,v2,1/6] net/smc: remove redundant dma sync ops
  - [net-next,v2,2/6] net/smc: optimize for smc_sndbuf_sync_sg_for_device and smc_rmb_sync_sg_for_cpu
  - [net-next,v2,3/6] net/smc: Introduce a sysctl for setting SMC-R buffer type
  - [net-next,v2,4/6] net/smc: Use sysctl-specified types of buffers in new link group
  - [net-next,v2,5/6] net/smc: Allow virtually contiguous sndbufs or RMBs for SMC-R
  - [net-next,v2,6/6] net/smc: Extend SMC-R link group netlink attribute

You are awesome, thank you!
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