8ea1f989aa
usnic_uiom_get_pages() uses gup_longterm() so we cannot really get rid of mmap_sem altogether in the driver, but we can get rid of some complexity that mmap_sem brings with only pinned_vm. We can get rid of the wq altogether as we no longer need to defer work to unpin pages as the counter is now atomic. We also share the lock. Acked-by: Parvi Kaustubhi <pkaustub@cisco.com> Reviewed-by: Ira Weiny <ira.weiny@intel.com> Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Signed-off-by: Jason Gunthorpe <jgg@mellanox.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.