linux-kernel - Re: [PATCH 01/12] target: Convert se_node_acl->device

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Message-ID: <20150513053233.GA20663@lst.de>
Date:	Wed, 13 May 2015 07:32:33 +0200
From:	Christoph Hellwig <hch@....de>
To:	"Nicholas A. Bellinger" <nab@...ux-iscsi.org>
Cc:	Andy Grover <agrover@...hat.com>,
	"Nicholas A. Bellinger" <nab@...erainc.com>,
	target-devel <target-devel@...r.kernel.org>,
	linux-scsi <linux-scsi@...r.kernel.org>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Hannes Reinecke <hare@...e.de>, Christoph Hellwig <hch@....de>,
	Sagi Grimberg <sagig@...lanox.com>
Subject: Re: [PATCH 01/12] target: Convert se_node_acl->device_list[] to
	RCU hlist

On Tue, May 12, 2015 at 10:08:51PM -0700, Nicholas A. Bellinger wrote:
> The series is bisectable.  With patch #1 in place ->device_list[] is
> still kzalloc()'ed, but new RCU pointer assignments are made into
> lun_entry_hlist[].
> 
> Squashing the RCU reader paths (#2-6) for merge is OK, but it's still
> nice to break up reader / updater changes into separate patches.

Having the full data structure switch over in one patch really makes
reviewing and understning the change a lot easier.  But changes to
say move to a mutex should indeed stay separate.  So patches 1-6
really should be mostly one.
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