On 07/27/2010 10:08 PM, Steve French wrote:
> On Tue, Jul 27, 2010 at 11:33 AM, Suresh Jayaraman <[email protected]> wrote:
>> On 07/27/2010 08:51 PM, Steve French wrote:
>>> 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)
>>
>> Does something like
>> � � � �$zcat /proc/config.gz | grep CONFIG_CIFS_FSCACHE
>>
>> might work on all distros?
>>
>> But, Jeff's idea of having a features file in /proc sounds good. Apart
>> from using them as a reference to check in documentation, it could be a
>> useful information while collecting debugging output as well..?
>
> Seems reasonable - but wondering if other file systems have run into the same
> problem - how to view their build/config options - and how they have
> solved it (if at all) so ccing fsdevel
>
I just checked some of the other filesystems. Most of them just mention
the CONFIG_XXX option has to be set/enabled.
For e.g.
(1) Mount options for jfs
iocharset=name
...
This requires CONFIG_NLS_UTF8 to be set in the kernel .config
file.
(2) Mount options for tmpfs
mpol=[default|prefer:Node|bind:NodeList|interleave|interleave:NodeList]
Set the NUMA memory allocation policy for all files in that
instance (if the kernel CONFIG_NUMA is enabled) ...
Thanks,
--
Suresh Jayaraman
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