linux-kernel - Re: [PATCH v2 05/12] docs: path-lookup: remove filename

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Message-ID: <878s5f2hov.fsf@notabene.neil.brown.name>
Date:   Mon, 19 Apr 2021 11:20:48 +1000
From:   NeilBrown <neilb@...e.de>
To:     Fox Chen <foxhlchen@...il.com>
Cc:     Fox Chen <foxhlchen@...il.com>, corbet@....net,
        vegard.nossum@...cle.com, viro@...iv.linux.org.uk,
        rdunlap@...radead.org, grandmaster@...klimov.de,
        linux-doc@...r.kernel.org, linux-kernel@...r.kernel.org,
        gregkh@...uxfoundation.org
Subject: Re: [PATCH v2 05/12] docs: path-lookup: remove filename_mountpoint

On Tue, Mar 16 2021, Fox Chen wrote:

> No filename_mountpoint any more
> see commit: commit 161aff1d93ab ("LOOKUP_MOUNTPOINT:
> fold path_mountpointat() into path_lookupat()")
>
> Without filename_mountpoint and path_mountpoint(), the
> numbers should be four & three:
>
> "These four correspond roughly to the three path_*() functions"
>
> Signed-off-by: Fox Chen <foxhlchen@...il.com>

Reviewed-by: NeilBrown <neilb@...e.de>

Thanks,
NeilBrown


> ---
>  Documentation/filesystems/path-lookup.rst | 6 +++---
>  1 file changed, 3 insertions(+), 3 deletions(-)
>
> diff --git a/Documentation/filesystems/path-lookup.rst b/Documentation/filesystems/path-lookup.rst
> index a65cb477d524..66697db74955 100644
> --- a/Documentation/filesystems/path-lookup.rst
> +++ b/Documentation/filesystems/path-lookup.rst
> @@ -652,9 +652,9 @@ restarts from the top with REF-walk.
>  
>  This pattern of "try RCU-walk, if that fails try REF-walk" can be
>  clearly seen in functions like ``filename_lookup()``,
> -``filename_parentat()``, ``filename_mountpoint()``,
> -``do_filp_open()``, and ``do_file_open_root()``.  These five
> -correspond roughly to the four ``path_*()`` functions we met earlier,
> +``filename_parentat()``,
> +``do_filp_open()``, and ``do_file_open_root()``.  These four
> +correspond roughly to the three ``path_*()`` functions we met earlier,
>  each of which calls ``link_path_walk()``.  The ``path_*()`` functions are
>  called using different mode flags until a mode is found which works.
>  They are first called with ``LOOKUP_RCU`` set to request "RCU-walk".  If
> -- 
> 2.30.2

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