[JFFS2][XATTR] Fix memory leak in POSIX-ACL support

* jffs2-xattr-v6.2-02-fix-posix_acl-memory-leak.patch

jffs2_clear_acl() which releases acl caches allocated by kmalloc()
was defined but it was never called. Thus, we faced to the risk
of memory leaking.

This patch plugs jffs2_clear_acl() into jffs2_do_clear_inode().
It ensures to release acl cache when inode is cleared.

Signed-off-by: KaiGai Kohei <kaigai@ak.jp.nec.com>

Thanks,

KaiGai Kohei wrote:
> David Woodhouse wrote:
> 
>>On Thu, 2006-06-29 at 15:01 +0200, Adrian Bunk wrote:
>>
>>
>>>it might not have been intended that jffs2_clear_acl() in Linus' tree
>>>is unused?
>>
>>
>>I suspect you're right -- thanks for pointing it out.
>>
>>Kaigai-san?
> 
> 
> I'm sorry, it's a serious BUG.
> When an inode is cleared, jffs2_clear_acl() should be called
> to release on-memory ACL. Because the current implementation
> didn't care about this cleaning-up, we have memory-leaking.
> 
> Please wait a patch for a while.
> 
> Thanks,

-- 
KaiGai Kohei <kaigai@kaigai.gr.jp>