From: bfields@fieldses.org (J. Bruce Fields)
To: Dan Aloni <dan@kernelim.com>
Cc: Chuck Lever <chuck.lever@oracle.com>,
linux-rdma@vger.kernel.org, linux-nfs@vger.kernel.org
Subject: Re: [PATCH v2] svcrdma: fix bounce buffers for unaligned offsets and multiple pages
Date: Wed, 14 Oct 2020 17:26:16 -0400 [thread overview]
Message-ID: <20201014212616.GB23262@fieldses.org> (raw)
In-Reply-To: <20201002193343.1040351-1-dan@kernelim.com>
Thanks, applying for 5.10.--b.
On Fri, Oct 02, 2020 at 10:33:43PM +0300, Dan Aloni wrote:
> This was discovered using O_DIRECT at the client side, with small
> unaligned file offsets or IOs that span multiple file pages.
>
> Fixes: e248aa7be86 ("svcrdma: Remove max_sge check at connect time")
> Signed-off-by: Dan Aloni <dan@kernelim.com>
> ---
> net/sunrpc/xprtrdma/svc_rdma_sendto.c | 3 ++-
> 1 file changed, 2 insertions(+), 1 deletion(-)
>
> Extended testing found another issue with the loop.
>
> diff --git a/net/sunrpc/xprtrdma/svc_rdma_sendto.c b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
> index 7b94d971feb3..c3d588b149aa 100644
> --- a/net/sunrpc/xprtrdma/svc_rdma_sendto.c
> +++ b/net/sunrpc/xprtrdma/svc_rdma_sendto.c
> @@ -638,10 +638,11 @@ static int svc_rdma_pull_up_reply_msg(struct svcxprt_rdma *rdma,
> while (remaining) {
> len = min_t(u32, PAGE_SIZE - pageoff, remaining);
>
> - memcpy(dst, page_address(*ppages), len);
> + memcpy(dst, page_address(*ppages) + pageoff, len);
> remaining -= len;
> dst += len;
> pageoff = 0;
> + ppages++;
> }
> }
>
> --
> 2.26.2
prev parent reply other threads:[~2020-10-15 2:19 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-02 14:48 [PATCH] svcrdma: fix bounce buffers for non-zero page offsets Dan Aloni
2020-10-02 14:54 ` Chuck Lever
2020-10-02 15:18 ` Dan Aloni
2020-10-02 15:23 ` Chuck Lever
2020-10-02 19:33 ` [PATCH v2] svcrdma: fix bounce buffers for unaligned offsets and multiple pages Dan Aloni
2020-10-14 21:26 ` J. Bruce Fields [this message]
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