[PATCH v3 02/13] docs: path-lookup: update path_to_nameidata() part
From: Fox Chen <hidden>
Date: 2021-05-27 09:17:02
Also in:
lkml
Subsystem:
documentation, the rest · Maintainers:
Jonathan Corbet, Linus Torvalds
No path_to_namei() anymore, step_into() will be called.
Related commit: commit c99687a03a78 ("fold path_to_nameidata()
into its only remaining caller")
Signed-off-by: Fox Chen <redacted>
---
Documentation/filesystems/path-lookup.rst | 11 ++++++-----
1 file changed, 6 insertions(+), 5 deletions(-)
diff --git a/Documentation/filesystems/path-lookup.rst b/Documentation/filesystems/path-lookup.rst
index 751082d469e8..6ea0880fb982 100644
--- a/Documentation/filesystems/path-lookup.rst
+++ b/Documentation/filesystems/path-lookup.rst@@ -453,11 +453,12 @@ to find a definitive answer. As the last step of ``walk_component()``, ``step_into()`` will be called either directly from walk_component() or from handle_dots(). It calls ``handle_mounts()``, to check and handle mount points, in which a new -``struct path`` containing a counted reference to the new dentry and a -reference to the new ``vfsmount`` which is only counted if it is -different from the previous ``vfsmount``. It then calls -``path_to_nameidata()`` to install the new ``struct path`` in the -``struct nameidata`` and drop the unneeded references. +``struct path`` is created containing a counted reference to the new dentry and +a reference to the new ``vfsmount`` which is only counted if it is +different from the previous ``vfsmount``. Then if there is +a symbolic link, ``step_into()`` calls ``pick_link()`` to deal with it, +otherwise it installs the new ``struct path`` in the ``struct nameidata``, and +drops the unneeded references. This "hand-over-hand" sequencing of getting a reference to the new dentry before dropping the reference to the previous dentry may
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2.31.1