[Ocfs2-devel] forget_all_cached_acls()

[Ocfs2-devel] forget_all_cached_acls()

[Joel Becker]

Hey everyone,
	I just found out from Steven over in GFS2 that there is a kernel
call forget_all_cached_acls().  If a cluster filesystem is using ACL
caching (added by Viro a little while back), they use
forget_all_cached_acls() at lock drop time to make sure they don't have
stale ACL info.
	We're not using cached_acls yet, but if someone adds it, please
remember this call ;-)

Joel

-- 

Life's Little Instruction Book #444

	"Never underestimate the power of a kind word or deed."

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			jlbec at evilplan.org

[Ocfs2-devel] forget_all_cached_acls()

[Tao Ma]

Hi Joel,
On 02/22/2011 05:32 PM, Joel Becker wrote:
> Hey everyone,
> 	I just found out from Steven over in GFS2 that there is a kernel
> call forget_all_cached_acls().  If a cluster filesystem is using ACL
> caching (added by Viro a little while back), they use
> forget_all_cached_acls() at lock drop time to make sure they don't have
> stale ACL info.
> 	We're not using cached_acls yet, but if someone adds it, please
> remember this call ;-)
>    
I remembered that Jeff did some work on it when I was at Oracle.
So Jeff, did you still work on it now?

Regards,
Tao

[Ocfs2-devel] forget_all_cached_acls()

[Jeff liu]

Hi Tao,

? 2011-2-22???9:21? Tao Ma ???

> Hi Joel,
> On 02/22/2011 05:32 PM, Joel Becker wrote:
>> Hey everyone,
>> 	I just found out from Steven over in GFS2 that there is a kernel
>> call forget_all_cached_acls().  If a cluster filesystem is using ACL
>> caching (added by Viro a little while back), they use
>> forget_all_cached_acls() at lock drop time to make sure they don't have
>> stale ACL info.
>> 	We're not using cached_acls yet, but if someone adds it, please
>> remember this call ;-)
>>   
> I remembered that Jeff did some work on it when I was at Oracle.
> So Jeff, did you still work on it now?
I have wrote a patch for catched acl about one and half year ago just for fun.
That patch has been tested on OCFS2 single node at that time,  I will try it on cluster environment with this call.


Thanks,
-Jeff


> 
> Regards,
> Tao