c421ece68f
Some devices require more than 3 MRs to build a single 1MB I/O. Ensure that rpcrdma_mrs_create() will add enough MRs to build that I/O. In a subsequent patch I'm changing the MR recovery logic to just toss out the MRs. In that case it's possible for ->send_request to loop acquiring some MRs, not getting enough, getting called again, recycling the previous MRs, then not getting enough, lather rinse repeat. Thus first we need to ensure enough MRs are created to prevent that loop. I'm "reusing" ia->ri_max_segs. All of its accessors seem to want the maximum number of data segments plus two, so I'm going to bake that into the initial calculation. 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.
See Documentation/00-INDEX for a list of what is contained in each file.
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.