linux-kernel - Re: [PATCH net v4] rds: ib: Increment i_fastreg

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Message-Id: 
 <175798080701.534846.17163351278679972758.git-patchwork-notify@kernel.org>
Date: Tue, 16 Sep 2025 00:00:07 +0000
From: patchwork-bot+netdevbpf@...nel.org
To: Haakon Bugge <haakon.bugge@...cle.com>
Cc: allison.henderson@...cle.com, davem@...emloft.net, edumazet@...gle.com,
 kuba@...nel.org, pabeni@...hat.com, horms@...nel.org, stable@...r.kernel.org,
 netdev@...r.kernel.org, linux-rdma@...r.kernel.org, rds-devel@....oracle.com,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH net v4] rds: ib: Increment i_fastreg_wrs before bailing
 out

Hello:

This patch was applied to netdev/net.git (main)
by Jakub Kicinski <kuba@...nel.org>:

On Thu, 11 Sep 2025 15:33:34 +0200 you wrote:
> We need to increment i_fastreg_wrs before we bail out from
> rds_ib_post_reg_frmr().
> 
> We have a fixed budget of how many FRWR operations that can be
> outstanding using the dedicated QP used for memory registrations and
> de-registrations. This budget is enforced by the atomic_t
> i_fastreg_wrs. If we bail out early in rds_ib_post_reg_frmr(), we will
> "leak" the possibility of posting an FRWR operation, and if that
> accumulates, no FRWR operation can be carried out.
> 
> [...]

Here is the summary with links:
  - [net,v4] rds: ib: Increment i_fastreg_wrs before bailing out
    https://git.kernel.org/netdev/net/c/4351ca3fcb3f

You are awesome, thank you!
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