Re: [PATCH net v4] rds: ib: Increment i_fastreg_wrs before bailing out

From: patchwork-bot+netdevbpf

Date: Mon Sep 15 2025 - 20:00:05 EST


Hello:

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

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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