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Christian Brauner 64f44b27ae
fs: use a for loop when locking a mount
Currently, lock_mount() uses a goto to retry the lookup until it
succeeded in acquiring the namespace_lock() preventing the top mount
from being overmounted. While that's perfectly fine we want to lookup
the mountpoint on the parent of the top mount in later patches. So adapt
the code to make this easier to implement. Also, the for loop is
arguably a little cleaner and makes the code easier to follow. No
functional changes intended.

Reviewed-by: Seth Forshee (DigitalOcean) <sforshee@kernel.org>
Message-Id: <20230202-fs-move-mount-replace-v4-3-98f3d80d7eaa@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
History 2023-05-19 04:30:22 +02:00
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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.