linux-kernel - Re: [PATCH 2/5] SUNRPC: create unix gid cache per network namespace

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Date:	Thu, 19 Jan 2012 21:00:23 +0400
From:	Stanislav Kinsbursky <skinsbursky@...allels.com>
To:	"J. Bruce Fields" <bfields@...ldses.org>
CC:	"Trond.Myklebust@...app.com" <Trond.Myklebust@...app.com>,
	"linux-nfs@...r.kernel.org" <linux-nfs@...r.kernel.org>,
	Pavel Emelianov <xemul@...allels.com>,
	"neilb@...e.de" <neilb@...e.de>,
	"netdev@...r.kernel.org" <netdev@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	James Bottomley <jbottomley@...allels.com>,
	"davem@...emloft.net" <davem@...emloft.net>,
	"devel@...nvz.org" <devel@...nvz.org>
Subject: Re: [PATCH 2/5] SUNRPC: create unix gid cache per network namespace

19.01.2012 20:24, J. Bruce Fields пишет:
> On Thu, Jan 19, 2012 at 06:49:14PM +0400, Stanislav Kinsbursky wrote:
>> This patch makes unix_gid_cache cache detail allocated and registered per
>> network namespace context.
>> Thus with this patch unix_gid_cache contents for network namespace "X" are
>> controlled from proc file system mount for the same network namespace "X".
>
> I'm confused--this seems half-done.  I see that you're creating the gid
> caches dynamically, but there's still this static definition:
>

This static definition is used as a template now.
Have a look at the first path of the series: cache creation routine duplicates 
incomming cache_detail and initializes net and hash_table fields in freshly 
created copy.
This copy is the new per-net cache_detail instance.

>>   struct cache_detail unix_gid_cache = {
>>   	.owner		= THIS_MODULE,
>>   	.hash_size	= GID_HASHMAX,
>> -	.hash_table	= gid_table,
>>   	.name		= "auth.unix.gid",
>>   	.cache_put	= unix_gid_put,
>>   	.cache_upcall	= unix_gid_upcall,
>
> And it looks like unix_gid_lookup is still using this static
> unix_gid_cache.  Maybe I'm missing something....
>

Yep, thanks for the catch.
My fault, I've missed this usage.


-- 
Best regards,
Stanislav Kinsbursky
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