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docs: path-lookup: no get_link()

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no get_link() anymore. we have step_into() and pick_link().

walk_component() will call step_into(), in turn call pick_link,
and return symlink name.

Signed-off-by: Fox Chen <foxhlchen@gmail.com>
Reviewed-by: NeilBrown <neilb@suse.de>
Link: https://lore.kernel.org/r/20210527091618.287093-10-foxhlchen@gmail.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
This commit is contained in:
Fox Chen 2021-05-27 17:16:14 +08:00 committed by Jonathan Corbet
parent 671f73356f
commit 18edb95a88
1 changed files with 4 additions and 6 deletions
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10
Documentation/filesystems/path-lookup.rst
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@ -1103,12 +1103,10 @@ doesn't need to notice. Getting this ``name`` variable on and off the
stack is very straightforward; pushing and popping the references is
a little more complex.
When a symlink is found, ``walk_component()`` returns the value ``1``
(``0`` is returned for any other sort of success, and a negative number
is, as usual, an error indicator). This causes ``get_link()`` to be
called; it then gets the link from the filesystem. Providing that
operation is successful, the old path ``name`` is placed on the stack,
and the new value is used as the ``name`` for a while. When the end of
When a symlink is found, ``walk_component()`` calls ``pick_link()`` via ``step_into()``
which returns the link from the filesystem.
Providing that operation is successful, the old path ``name`` is placed on the
stack, and the new value is used as the ``name`` for a while. When the end of
the path is found (i.e. ``*name`` is ``'\0'``) the old ``name`` is restored
off the stack and path walking continues.