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25e195aa1e
1) no instances of ->d_automount() have ever made use of the "return ERR_PTR(-EISDIR) if you don't feel like mounting anything" - that's a rudiment of plans that got superseded before the thing went into the tree. Despite the comment in follow_automount(), autofs has never done that. 2) if there's no ->d_automount() in dentry_operations, filesystems should not set DCACHE_NEED_AUTOMOUNT in the first place. None have ever done so... Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
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.