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Diffstat (limited to 'Documentation/filesystems/path-lookup.rst')
| -rw-r--r-- | Documentation/filesystems/path-lookup.rst | 11 |
1 files 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 |