linux-kernel - Re: [PATCH 03/15] nd_btt: atomic sector updates

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Date:	Sun, 21 Jun 2015 12:03:29 +0200
From:	Christoph Hellwig <hch@....de>
To:	Dan Williams <dan.j.williams@...el.com>
Cc:	axboe@...nel.dk, linux-nvdimm@...ts.01.org, boaz@...xistor.com,
	toshi.kani@...com, Vishal Verma <vishal.l.verma@...ux.intel.com>,
	Neil Brown <neilb@...e.de>,
	Greg KH <gregkh@...uxfoundation.org>,
	Dave Chinner <david@...morbit.com>,
	linux-kernel@...r.kernel.org,
	Andy Lutomirski <luto@...capital.net>,
	Jens Axboe <axboe@...com>, linux-acpi@...r.kernel.org,
	Jeff Moyer <jmoyer@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>, linux-fsdevel@...r.kernel.org,
	hch@....de, mingo@...nel.org
Subject: Re: [PATCH 03/15] nd_btt: atomic sector updates

> +config ND_MAX_REGIONS
> +	int "Maximum number of regions supported by the sub-system"
> +	default 64
> +	---help---
> +	  A 'region' corresponds to an individual DIMM or an interleave
> +	  set of DIMMs.  A typical maximally configured system may have
> +	  up to 32 DIMMs.
> +
> +	  Leave the default of 64 if you are unsure.

Having static limits in Kconfig is a bad idea.  What prevents you
from handling any (reasonable) number dynamically?
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