netdev - Re: [PATCH v2] 9p/rdma: unmap receive dma buffer in rdma_request()/post

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Message-ID: <Y7UtGw6nBLFpXpPh@unreal>
Date:   Wed, 4 Jan 2023 09:39:07 +0200
From:   Leon Romanovsky <leon@...nel.org>
To:     Zhengchao Shao <shaozhengchao@...wei.com>
Cc:     v9fs-developer@...ts.sourceforge.net, netdev@...r.kernel.org,
        ericvh@...il.com, lucho@...kov.net, asmadeus@...ewreck.org,
        davem@...emloft.net, edumazet@...gle.com, kuba@...nel.org,
        pabeni@...hat.com, linux_oss@...debyte.com,
        tom@...ngridcomputing.com, weiyongjun1@...wei.com,
        yuehaibing@...wei.com
Subject: Re: [PATCH v2] 9p/rdma: unmap receive dma buffer in
 rdma_request()/post_recv()

On Wed, Jan 04, 2023 at 10:04:24AM +0800, Zhengchao Shao wrote:
> When down_interruptible() or ib_post_send() failed in rdma_request(),
> receive dma buffer is not unmapped. Add unmap action to error path.
> Also if ib_post_recv() failed in post_recv(), dma buffer is not unmapped.
> Add unmap action to error path.
> 
> Fixes: fc79d4b104f0 ("9p: rdma: RDMA Transport Support for 9P")
> Signed-off-by: Zhengchao Shao <shaozhengchao@...wei.com>
> ---
> v2: add unmap action if ib_post_send() or ib_post_recv() failed
> ---
>  net/9p/trans_rdma.c | 15 ++++++++++++---
>  1 file changed, 12 insertions(+), 3 deletions(-)
> 

Thanks,
Reviewed-by: Leon Romanovsky <leonro@...dia.com>