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Due to the introduction of kmap_local_*, the storage of slots used for short-term mapping has changed from per-CPU to per-thread. kmap_atomic() disable preemption, while kmap_local_*() only disable migration. There is no need to disable preemption in several kamp_atomic places used in fuse. Link: https://lwn.net/Articles/836144/ Signed-off-by: Peng Hao <flyingpeng@tencent.com> Signed-off-by: Miklos Szeredi <mszeredi@redhat.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.
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