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Re: [RFC][PATCH v2] mmc_block: Allow more than 8 partitions per card

From Ben Hutchings <ben@decadent.org.uk>
Newsgroups linux.kernel
Subject Re: [RFC][PATCH v2] mmc_block: Allow more than 8 partitions per card
Date 2015-10-22 20:10 +0200
Message-ID <qmstl-1LT-39@gated-at.bofh.it> (permalink)
References <qmrxg-pB-9@gated-at.bofh.it>
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On Thu, 2015-10-22 at 10:00 -0700, John Stultz wrote:
> From: Colin Cross <ccross@android.com>
> 
> It is quite common for Android devices to utilize more
> then 8 partitions on internal eMMC storage.
> 
> The vanilla kernel can support this via
> CONFIG_MMC_BLOCK_MINORS, however that solution caps the
> system to 256 minors total, which limits the number of
> mmc cards the system can support.
[...]

This commit was intended to allow support for 256 cards with any number
of partitions:

commit a26eba614afff0e39594101bcb73014a9a22fb33
Author: Ben Hutchings <ben@decadent.org.uk>
Date:   Thu Nov 6 03:35:09 2014 +0000

    mmc: block: Increase max_devices

I don't think the new patch is sufficient or necessary to increase the
limit further.

Do you have a compatibility requirement to retain the numbering of the
first 7 partitions?

Ben.

-- 
Ben Hutchings
Q.  Which is the greater problem in the world today, ignorance or apathy?
A.  I don't know and I couldn't care less.

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Thread

[RFC][PATCH v2] mmc_block: Allow more than 8 partitions per card John Stultz <john.stultz@linaro.org> - 2015-10-22 19:10 +0200
  Re: [RFC][PATCH v2] mmc_block: Allow more than 8 partitions per card Ben Hutchings <ben@decadent.org.uk> - 2015-10-22 20:10 +0200
    Re: [RFC][PATCH v2] mmc_block: Allow more than 8 partitions per card Ben Hutchings <ben@decadent.org.uk> - 2015-10-22 20:20 +0200

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