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c897c2c8b8
In some cases drivers may need to check if a given umem is contiguous. Add a helper function in core code so that drivers don't need to deal with umem or scatter-gather lists structure. Additionally add a helper for getting umem's start DMA address and use it in other helper functions that open code it. Signed-off-by: Michael Margolin <mrgolin@amazon.com> Link: https://patch.msgid.link/20250708202308.24783-3-mrgolin@amazon.com Reviewed-by: Jason Gunthorpe <jgg@nvidia.com> Signed-off-by: Leon Romanovsky <leon@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 reStructuredText 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.