Thread (3 messages) 3 messages, 3 authors, 2023-10-04

Re: [PATCH] vringh: don't use vringh_kiov_advance() in vringh_iov_xfer()

From: patchwork-bot+netdevbpf@kernel.org
Date: 2023-10-04 07:30:29
Also in: kvm, lkml

Hello:

This patch was applied to netdev/net.git (main)
by David S. Miller [off-list ref]:

On Mon, 25 Sep 2023 12:30:57 +0200 you wrote:
In the while loop of vringh_iov_xfer(), `partlen` could be 0 if one of
the `iov` has 0 lenght.
In this case, we should skip the iov and go to the next one.
But calling vringh_kiov_advance() with 0 lenght does not cause the
advancement, since it returns immediately if asked to advance by 0 bytes.

Let's restore the code that was there before commit b8c06ad4d67d
("vringh: implement vringh_kiov_advance()"), avoiding using
vringh_kiov_advance().

[...]
Here is the summary with links:
  - vringh: don't use vringh_kiov_advance() in vringh_iov_xfer()
    https://git.kernel.org/netdev/net/c/7aed44babc7f

You are awesome, thank you!
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