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ec3265a245
Doesn't take much massage, and we no longer need to make sure that by the time of final mntput() the victim has been removed from the list. Makes life safer for ->d_automount() instances... Rules: * all ->mnt_expire accesses are under mount_lock. * insertion into the list is done by mnt_set_expiry(), and caller (->d_automount() instance) must hold a reference to mount in question. It shouldn't be done more than once for a mount. * if a mount on an expiry list is not yet mounted, it will be ignored by anything that walks that list. * if the final mntput() finds its victim still on an expiry list (in which case it must've never been mounted - umount_tree() would've taken it out), it will remove the victim from the list. Reviewed-by: Christian Brauner <brauner@kernel.org> 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 reStructuredText 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.