Re: [PATCH] splice, net: avoid MSG_MORE when the bvec array fills

[Christian Brauner]

On Sat, 31 Oct 2026 11:59:23 +0200, Avi Weiss wrote:
> splice_to_socket() leaves tail at the last included pipe buffer when
> its 16-entry bvec array fills. If the requested length exceeds the
> available pipe data, pipe_occupancy() counts that buffer again and sets
> MSG_MORE even though the pipe is empty. Small TCP transfers can then be
> delayed until the cork timeout expires.
> 
> Advance tail before checking the array limit so the occupancy test
> counts only pipe buffers that have not been included in the send.
> 
> [...]

Applied to the vfs.fixes branch of the vfs/vfs.git tree.
Patches in the vfs.fixes branch should appear in linux-next soon.

Please report any outstanding bugs that were missed during review in a
new review to the original patch series allowing us to drop it.

It's encouraged to provide Acked-bys and Reviewed-bys even though the
patch has now been applied. If possible patch trailers will be updated.

Note that commit hashes shown below are subject to change due to rebase,
trailer updates or similar. If in doubt, please check the listed branch.

tree:   https://git.kernel.org/pub/scm/linux/kernel/git/vfs/vfs.git
branch: vfs.fixes

[1/1] splice, net: avoid MSG_MORE when the bvec array fills
      https://git.kernel.org/vfs/vfs/c/8eaa35c6c29a