From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mike Snitzer <snitzer@redhat.com>
Subject: Re: Review of dm-block-manager.c
Date: Mon, 1 Aug 2011 17:17:29 -0400
Message-ID: <20110801211729.GA11406@redhat.com>
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To: Mikulas Patocka <mpatocka@redhat.com>
Cc: device-mapper development <dm-devel@redhat.com>, Edward Thornber <thornber@redhat.com>, "Alasdair G. Kergon" <agk@redhat.com>
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On Mon, Aug 01 2011 at  5:00pm -0400,
Mikulas Patocka <mpatocka@redhat.com> wrote:

> Hi
> 
> This is review of dm-block-manager.c:
> 
> 
> char buffer_cache_name[32];
> sprintf(bm->buffer_cache_name, "dm_block_buffer-%d:%d",
> --- it may not fit in 32 bytes.

It can accomodate nearly 1 trillion DM devices:

dm_block_buffer-253:9999999999

The goal is to move to using a common slab cache per blocksize long
before this limit becomes a concern.

Mike