linux-kernel - Re: [Ext2-devel] [RFC][PATCH] Manage jbd allocations from its own slabs

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Message-Id: <1156422573.7908.1.camel@kleikamp.austin.ibm.com>
Date:	Thu, 24 Aug 2006 07:29:33 -0500
From:	Dave Kleikamp <shaggy@...tin.ibm.com>
To:	Badari Pulavarty <pbadari@...ibm.com>
Cc:	Herbert Xu <herbert@...dor.apana.org.au>, akpm@...l.org,
	ext2-devel <Ext2-devel@...ts.sourceforge.net>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [Ext2-devel] [RFC][PATCH] Manage jbd allocations from its own
	slabs

On Wed, 2006-08-23 at 16:08 -0700, Badari Pulavarty wrote:
> Hi,
> 
> Here is the fix to "bh: Ensure bh fits within a page" problem
> caused by JBD.
> 
> BTW, I realized that this problem can happen only with 1k, 2k
> filesystems - as 4k, 8k allocations disable slab debug 
> automatically. But for completeness, I created slabs for those
> also.

With a larger base page size, you could run into the same problems for
4K and 8K allocations, so it's a good thing to do them all.

> What do you think ? I ran basic tests and things are fine.

Looks sane to me.

Shaggy
-- 
David Kleikamp
IBM Linux Technology Center

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