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From: NeilBrown <neilb@suse.de>
To: Fox Chen <foxhlchen@gmail.com>
Cc: Fox Chen <foxhlchen@gmail.com>,
	corbet@lwn.net, vegard.nossum@oracle.com,
	viro@zeniv.linux.org.uk, rdunlap@infradead.org,
	grandmaster@al2klimov.de, linux-doc@vger.kernel.org,
	linux-kernel@vger.kernel.org, gregkh@linuxfoundation.org
Subject: Re: [PATCH v2 01/12] docs: path-lookup: update follow_managed() part
Date: Mon, 19 Apr 2021 10:52:01 +1000
Message-ID: <87k0oz2j0u.fsf@notabene.neil.brown.name> (raw)
In-Reply-To: <20210316054727.25655-2-foxhlchen@gmail.com>


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On Tue, Mar 16 2021, Fox Chen wrote:

> No follow_managed() anymore, handle_mounts(),
> traverse_mounts(), will do the job.
> see commit 9deed3ebca24 ("new helper: traverse_mounts()")
>
> Signed-off-by: Fox Chen <foxhlchen@gmail.com>
> ---
>  Documentation/filesystems/path-lookup.rst | 10 +++++-----
>  1 file changed, 5 insertions(+), 5 deletions(-)
>
> diff --git a/Documentation/filesystems/path-lookup.rst b/Documentation/filesystems/path-lookup.rst
> index c482e1619e77..d07766375e13 100644
> --- a/Documentation/filesystems/path-lookup.rst
> +++ b/Documentation/filesystems/path-lookup.rst
> @@ -448,10 +448,11 @@ described.  If it finds a ``LAST_NORM`` component it first calls
>  filesystem to revalidate the result if it is that sort of filesystem.
>  If that doesn't get a good result, it calls "``lookup_slow()``" which
>  takes ``i_rwsem``, rechecks the cache, and then asks the filesystem
> -to find a definitive answer.  Each of these will call
> -``follow_managed()`` (as described below) to handle any mount points.
> +to find a definitive answer.
>  
> -In the absence of symbolic links, ``walk_component()`` creates a new
> +As the last step of ``walk_component()``, ``step_into()`` will be called either
> +directly from walk_component() or from handle_dots().  It calls
> +``handle_mount()``, to check and handle mount points, in which a new

Typo - it is "handle_mounts", not "handle_mount"

With that fixed:
  Reviewed-by: NeilBrown <neilb@suse.de>

Thanks,
NeilBrown


>  ``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
> @@ -535,8 +536,7 @@ covered in greater detail in autofs.txt in the Linux documentation
>  tree, but a few notes specifically related to path lookup are in order
>  here.
>  
> -The Linux VFS has a concept of "managed" dentries which is reflected
> -in function names such as "``follow_managed()``".  There are three
> +The Linux VFS has a concept of "managed" dentries.  There are three
>  potentially interesting things about these dentries corresponding
>  to three different flags that might be set in ``dentry->d_flags``:
>  
> -- 
> 2.30.2

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  reply index

Thread overview: 34+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-03-16  5:47 [PATCH v2 00/12] docs: path-lookup: Update pathlookup docs Fox Chen
2021-03-16  5:47 ` [PATCH v2 01/12] docs: path-lookup: update follow_managed() part Fox Chen
2021-04-19  0:52   ` NeilBrown [this message]
2021-04-19  2:17   ` Matthew Wilcox
2021-04-19  2:33     ` Fox Chen
2021-04-19  3:25       ` Matthew Wilcox
2021-04-19  3:33         ` Fox Chen
2021-04-19 19:22           ` Jonathan Corbet
2021-04-20  1:12             ` Fox Chen
2021-03-16  5:47 ` [PATCH v2 02/12] docs: path-lookup: update path_to_nameidata() part Fox Chen
2021-04-19  1:00   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 03/12] docs: path-lookup: update path_mountpoint() part Fox Chen
2021-04-19  1:03   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 04/12] docs: path-lookup: update do_last() part Fox Chen
2021-04-19  1:17   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 05/12] docs: path-lookup: remove filename_mountpoint Fox Chen
2021-04-19  1:20   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 06/12] docs: path-lookup: Add macro name to symlink limit description Fox Chen
2021-04-19  1:22   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 07/12] docs: path-lookup: i_op->follow_link replaced with i_op->get_link Fox Chen
2021-04-19  1:28   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 08/12] docs: path-lookup: update i_op->put_link and cookie description Fox Chen
2021-04-19  1:37   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 09/12] docs: path-lookup: no get_link() Fox Chen
2021-04-19  1:41   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 10/12] docs: path-lookup: update WALK_GET, WALK_PUT desc Fox Chen
2021-04-19  1:47   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 11/12] docs: path-lookup: update get_link() ->follow_link description Fox Chen
2021-04-19  1:54   ` NeilBrown
2021-03-16  5:47 ` [PATCH v2 12/12] docs: path-lookup: update symlink description Fox Chen
2021-04-19  1:59   ` NeilBrown
2021-04-19  2:34     ` Fox Chen
2021-04-13 21:18 ` [PATCH v2 00/12] docs: path-lookup: Update pathlookup docs Jonathan Corbet
2021-04-13 22:26   ` NeilBrown

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