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| author |   Fox Chen <foxhlchen@gmail.com> | 2021-05-27 17:16:14 +0800 |
|---|---|---|
| committer |   Jonathan Corbet <corbet@lwn.net> | 2021-06-18 11:36:08 -0600 |
| commit | 18edb95a88a947b10536be4dc86b4a190715f816 (patch) | |
| tree | 0966ac6b37b3d9db32cd2abfbfa91c5dd6df5722 /Documentation/filesystems | |
| parent | docs: path-lookup: update i_op->put_link and cookie description (diff) | |
| download | linux-dev-18edb95a88a947b10536be4dc86b4a190715f816.tar.xz linux-dev-18edb95a88a947b10536be4dc86b4a190715f816.zip | |
docs: path-lookup: no get_link()
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>
Diffstat (limited to 'Documentation/filesystems')
| -rw-r--r-- | Documentation/filesystems/path-lookup.rst | 10 |
1 files changed, 4 insertions, 6 deletions
diff --git a/Documentation/filesystems/path-lookup.rst b/Documentation/filesystems/path-lookup.rst index 3855809784cf..0a125673a8fe 100644 --- a/Documentation/filesystems/path-lookup.rst +++ b/Documentation/filesystems/path-lookup.rst @@ -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. |