scripts/extract-ikconfig could be run against the image (or look at /proc/config.gz) - but unless there is an easier way to view kernel config options on particular distros via distro specific tools - probably easier just to note that CONFIG_FSCACHE must be selected in the kernel build (since it forces dependencies on the other kernel options being set) On Tue, Jul 27, 2010 at 10:15 AM, Jeff Layton <jlayton@xxxxxxxxxx> wrote: > On Tue, 27 Jul 2010 10:13:14 -0500 > Steve French <smfrench@xxxxxxxxx> wrote: > >> Yes - I agree with Jeff, need to add the mention of the config option >> and perhaps how to tell if fsc feature is available in kernel. >> > > How would one tell? :) > >> On Tue, Jul 27, 2010 at 9:33 AM, Jeff Layton <jlayton@xxxxxxxxxx> wrote: >> > On Tue, 27 Jul 2010 19:20:00 +0530 >> > Suresh Jayaraman <sjayaraman@xxxxxxx> wrote: >> > >> >> 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 <sjayaraman@xxxxxxx> >> >> --- >> >> doc/mount.cifs.8.xml | 17 +++++++++++++++++ >> >> 1 files changed, 17 insertions(+), 0 deletions(-) >> >> >> >> diff --git a/doc/mount.cifs.8.xml b/doc/mount.cifs.8.xml >> >> index 4937550..2200746 100644 >> >> --- a/doc/mount.cifs.8.xml >> >> +++ b/doc/mount.cifs.8.xml >> >> @@ -534,6 +534,23 @@ 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. >> >> + NOTE: You also need to have cachefilesd daemon installed and >> >> + running to make the cache operational. >> >> + </para></listitem> >> >> + </varlistentry> >> > >> > You may want to mention somewhere that this is only available in recent >> > kernels that have been built with fsc turned on. >> > >> > Other than that, this and the mount.cifs patch look fine and I'll plan >> > to commit them before the upcoming 4.6 release. >> > >> >> <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> >> > >> > -- >> > Jeff Layton <jlayton@xxxxxxxxxx> >> > >> >> >> > > > -- > Jeff Layton <jlayton@xxxxxxxxxx> > -- Thanks, Steve -- To unsubscribe from this list: send the line "unsubscribe linux-cifs" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
