On Tue, 27 Jul 2010 22:18:10 +0530
Suresh Jayaraman <sjayara...@suse.de> wrote:

> Changes since last post:
>       - added the information about the kernel CONFIG option
>       - also added the information that caching is currently enabled for 
> files opened as read-only
> 
> Document the newly added local caching feature using FS-Cache. This patch
> could be queued and considered once the local caching patches gets merged
> upstream.
> 
> Signed-off-by: Suresh Jayaraman <sjayara...@suse.de>
> ---
> 
>  doc/mount.cifs.8.xml |   20 ++++++++++++++++++++
>  1 files changed, 20 insertions(+), 0 deletions(-)
> 
> diff --git a/doc/mount.cifs.8.xml b/doc/mount.cifs.8.xml
> index 4937550..af20c10 100644
> --- a/doc/mount.cifs.8.xml
> +++ b/doc/mount.cifs.8.xml
> @@ -534,6 +534,26 @@ permissions in memory that can't be stored on the 
> server. This information can d
>                  maximum wsize currently allowed by CIFS is 57344 (fourteen
>                  4096 byte pages)</para></listitem>
>       </varlistentry>
> +     <varlistentry>
> +             <term>fsc</term>
> +
> +             <listitem><para>Enable local disk caching using FS-Cache
> +             for cifs. This option could be useful to improve performance
> +             on a slow link, heavily loaded server and/or network
> +             where reading from the disk is faster than reading from the
> +             server (over the network). This could also impact the
> +             scalability positively as the number of calls to the server
> +             are reduced. But, be warned that local caching is not suitable
> +             for all workloads, for e.g., read-once type workloads. So
> +             you need to consider carefully the situation/workload before
> +             using this option. Currently, local disk caching is enabled
> +             for CIFS files opened as read-only.
> +             NOTE: This feature is available only in the recent kernels
> +             that have been built with the kernel config option
> +             CONFIG_CIFS_FSCACHE. You also need to have cachefilesd daemon
> +             installed and running to make the cache operational.
> +                </para></listitem>
> +     </varlistentry>
>        <varlistentry>
>                  <term>--verbose</term>
>                  <listitem><para>Print additional debugging information for 
> the mount. Note that this parameter must be specified before the -o. For 
> example:</para><para>mount -t cifs //server/share /mnt --verbose -o 
> user=username</para></listitem>
> 
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> 

I had already merged the original patch, so I've merged this one as a
delta on top of that.

Thanks,
-- 
Jeff Layton <jlay...@redhat.com>
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