Re: [PATCH 0/3] vmsplice: make vmsplice a trivial wrapper for preadv2/pwritev2

Askar Safin <[email protected]> Thu, 25 Jun 2026 12:03:01 +0300

Newsgroups	dev.linux.lists.fuse-devel,dev.linux.lists.patches,org.kernel.vger.linux-api,org.kernel.vger.linux-fsdevel,org.kernel.vger.linux-kernel,org.kernel.vger.netdev,org.kvack.linux-mm
Message-ID	<[email protected]>

Val Packett <[email protected]>:
> speaking of fuse_dev_splice……_write actually, this series has broken 
> xdg-document-portal!
> 
> https://github.com/flatpak/xdg-desktop-portal/issues/2026
> 
> Specifically what happens is that the EINVAL is returned due to oh.len 
> != nbytes:
> 
> fuse_dev_do_write: oh.len 16400 != nbytes 15526
> 
> (where 16400 == 16384 (read len) + 16, 15526 == 15510 (file len) + 16)
> 
> After reverting the series, there is no error because oh.len 
> becomes 15526 too.

Please, test v2 version of my fixes:
https://lore.kernel.org/lkml/[email protected]/ .

This should fix this bug.

-- 
Askar Safin