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| Filename | Latest commit message | Latest commit date |
|---|---|---|
e951747a08
The locking here has always been a bit crazy and spread out, upon some careful analysis we can simplify things. Create a single function uverbs_destroy_ufile_hw() that internally handles all locking. This pulls together pieces of this process that were sprinkled all over the places into one place, and covers them with one lock. This eliminates several duplicate/confusing locks and makes the control flow in ib_uverbs_close() and ib_uverbs_free_hw_resources() extremely simple. Unfortunately we have to keep an extra mutex, ucontext_lock. This lock is logically part of the rwsem and provides the 'down write, fail if write locked, wait if read locked' semantic we require. Signed-off-by: Jason Gunthorpe <jgg@mellanox.com> |
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| README | ||
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.