Re: Documenting MS_RELATIME

[Valerie Henson <val_henson@linux.intel.com>]

On Sat, Feb 10, 2007 at 09:56:07AM -0800, Michael Kerrisk wrote:
> Val,
> 
> I'm just updating the mount(2) man page for MS_RELATIME, and this is the
> text I've come up with:
> 
>        MS_RELATIME(Since Linux 2.6.20)
>               When a file on this file system is accessed, only
>               update  the  file's last accessed time (atime) if
>               the current value of atime is less than or  equal
>               to  the file's last modified (mtime) or last sta-
>               tus change time (ctime).  This option  is  useful
>               for  programs, such as mutt(1), that need to know
>               when a file has been read since it was last modi-
>               fied.
> 
> This text is based on your comments accompanying the various patches, but
> it differs in a respect.  Your comments said that the atime would only be
> updated if the atime is older than mtime/ctime.  However, what the code
> actually does is update atime if it is is <= mtime/ctime -- i.e., atime is
> older than or *or equal to* mtime/ctime.
> 
> I'm sure that the code implements your intention, but before incorporating
> the above text I thought I just better check, since the code differs from
> your comment.  Can you just confirm that the proposed man page text is okay.

That's correct, yes.  Thanks!

-VAL