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[ Upstream commit 2c88c16dc20e88dd54d2f6f4d01ae1dce6cc9654 ] if you have a variable that holds NULL or a pointer to live struct mount, do not shove ERR_PTR() into it - not if you later treat "not NULL" as "holds a pointer to object". Signed-off-by: Al Viro <viro@zeniv.linux.org.uk> Stable-dep-of: 0f28be64d132 ("erofs: fix lockdep false positives on initializing erofs_pseudo_mnt") Signed-off-by: Sasha Levin <sashal@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 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.