From: Christoph Hellwig <hch@lst.de>
To: Sagi Grimberg <sagi@grimberg.me>
Cc: Christoph Hellwig <hch@lst.de>, Varun Prakash <varun@chelsio.com>,
linux-nvme@lists.infradead.org
Subject: Re: [PATCH] nvmet-tcp: fix data digest pointer calculation
Date: Wed, 27 Oct 2021 09:13:16 +0200 [thread overview]
Message-ID: <20211027071316.GA11266@lst.de> (raw)
In-Reply-To: <26648af7-f459-5d43-bc2a-ef2c63715418@grimberg.me>
On Wed, Oct 27, 2021 at 10:11:01AM +0300, Sagi Grimberg wrote:
>>> diff --git a/drivers/nvme/target/tcp.c b/drivers/nvme/target/tcp.c
>>> index 07ee347..d641bfa 100644
>>> --- a/drivers/nvme/target/tcp.c
>>> +++ b/drivers/nvme/target/tcp.c
>>> @@ -702,7 +702,7 @@ static int nvmet_try_send_ddgst(struct nvmet_tcp_cmd *cmd, bool last_in_batch)
>>> struct nvmet_tcp_queue *queue = cmd->queue;
>>> struct msghdr msg = { .msg_flags = MSG_DONTWAIT };
>>> struct kvec iov = {
>>> - .iov_base = &cmd->exp_ddgst + cmd->offset,
>>> + .iov_base = (u8 *)&cmd->exp_ddgst + cmd->offset,
>>
>> Wouldn't be the better fix to divide cmd->offset by 4 instead of the
>> casts? I can fix this up inline if that is ok.
>
> Don't really mind, what makes it a better fix?
I generally prefer to avoid casts as they paper over bugs.
next prev parent reply other threads:[~2021-10-27 7:13 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-10-25 17:16 [PATCH] nvmet-tcp: fix data digest pointer calculation Varun Prakash
2021-10-26 13:24 ` Sagi Grimberg
2021-10-27 5:57 ` Christoph Hellwig
2021-10-27 7:11 ` Sagi Grimberg
2021-10-27 7:13 ` Christoph Hellwig [this message]
2021-10-27 9:49 ` Sagi Grimberg
2021-10-27 14:49 ` Varun Prakash
2021-10-28 8:26 ` Sagi Grimberg
2021-10-28 10:49 ` Varun Prakash
2021-10-28 14:00 ` Christoph Hellwig
2021-10-28 14:07 ` Sagi Grimberg
2021-10-27 21:37 ` Keith Busch
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