[Linux-cachefs] 'bad page state' error

[Rob Bos]

I applied the 373 patchset and compiled a version with CIFS_FSCACHE enabled.

Same problem. Got ~2GiB into a cp before it started generating 'bad page 
state' errors.

It's not mission-critical for this application, but it would be nice to 
have.

On 6/17/2013 2:20 AM, David Howells wrote:
> Rob Bos <rbos at sfu.ca> wrote:
>
>> BUG: Bad page state in process aria2c  pfn:78078
>> page:ffffea0001a41a40 flags:0020000000001000 count:0 mapcount:0 mapping:(null)
>> index:9 (Tainted: G    B      ---------------  T)
>> Pid: 2975, comm: aria2c Tainted: G    B      ---------------  T
>> 2.6.32-358.6.2.el6.rbos.1.x86_64 #1
> I have a series of patches poised to go into RHEL-6 to clean up a number of
> issues in fscache.  There's at least one patch in there that might fix this as
> a side effect (ie. this particular bug isn't the one the patch is actually
> intended to fix).  But since it has to do with retrieval operation lifetime
> accounting, it might just.
>
> If you are able to try a debugging kernel of slightly more recent vintage, I
> have one already prepared for another customer:
>
> 	http://people.redhat.com/~dhowells/kernel-2.6.32-373.el6.bz928746.2.x86_64.rpm
> 	http://people.redhat.com/~dhowells/kernel-firmware-2.6.32-373.el6.bz928746.2.noarch.rpm
>
> might work for you.  The kernel rpm is just the base RHEL kernel plus my
> outstanding fscache patches.
>
> David