linux-kernel - [PATCHSET 0/5 v2] brd: partition fixes

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Date:	Wed, 27 Aug 2014 18:22:21 +0300
From:	Boaz Harrosh <boaz@...xistor.com>
To:	Jens Axboe <axboe@...com>, Matthew Wilcox <willy@...ux.intel.com>,
	Dmitry Monakhov <dmonakhov@...nvz.org>
CC:	Ross Zwisler <ross.zwisler@...ux.intel.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	linux-fsdevel <linux-fsdevel@...r.kernel.org>
Subject: [PATCHSET 0/5 v2] brd: partition fixes

Jens Hi

What do you intend to do with these fixes? These are real bugs on devices
shipped for a while now. I think they need to go into current 3.17-rcX Kernel.

If not then lets please put them in for-next
[This set is for linux-block.git/for-next, tell me if you need one ontop
 of for-linus]

[v2]
Based on Jens's linux-next [30e996a] incorporating the brd patch by Dmitry Monakhov.
Dmitry has introduced a new part_show parameter, this parameter is now removed
and we always "part_show=1".
Scripts that did part_show=1 will work just the same but will display a
message in logs. This is harmless. (And scripts can be modified to
remove this parameter)

[v1]
Current situation is that any attempt to use partitions with brd device would
create the partition but then any use will trash the data.

See: http://www.spinics.net/lists/linux-scsi/msg76737.html

So these patches fixes up all the problems we saw with the code, but not sacrificing
any of the old fixtures. See [patch 4/5] for more explanations.

list of patches:
[PATCH 1/5] axonram: Fix bug in direct_access
[PATCH 2/5] Change direct_access calling convention

    These are Matthew's patches from the DAX series which fixes the interface to
    direct_access taking into account the partition offset. It must be applied
    here for partitions to work with direct_access() API.

[PATCH 3/5] brd: Add getgeo to block ops

    This one is needed by fdisk, otherwise it just asks extra questions

[PATCH 4/5] brd: Fix all partitions BUGs
[PATCH 5/5] brd: Request from fdisk 4k alignment

Thanks
Boaz

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