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[ Upstream commitbad4c6eb5e] Anj Duvnjak reports that the Kodi.tv NFS client is not able to read video files from a v5.10.11 Linux NFS server. The new sendpage-based TCP sendto logic was not attentive to non- zero page_base values. nfsd_splice_read() sets that field when a READ payload starts in the middle of a page. The Linux NFS client rarely emits an NFS READ that is not page- aligned. All of my testing so far has been with Linux clients, so I missed this one. Reported-by: A. Duvnjak <avian@extremenerds.net> BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=211471 Fixes:4a85a6a332("SUNRPC: Handle TCP socket sends with kernel_sendpage() again") Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Tested-by: A. Duvnjak <avian@extremenerds.net> Signed-off-by: Sasha Levin <sashal@kernel.org>
Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.