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With certain combinations of krb5i/p, MR size, and r/wsize, I/O can fail with EMSGSIZE. This is because the calculated value of ri_max_segs (the max number of MRs per RPC) exceeded RPCRDMA_MAX_HDR_SEGS, which caused Read or Write list encoding to walk off the end of the transport header. Once that was addressed, the ro_maxpages result has to be corrected to account for the number of MRs needed for Reply chunks, which is 2 MRs smaller than a normal Read or Write chunk. Signed-off-by: Chuck Lever <chuck.lever@oracle.com> Signed-off-by: Anna Schumaker <Anna.Schumaker@Netapp.com>
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.