From: Christoph Hellwig <hch@lst.de>
To: "Nicholas A. Bellinger" <nab@daterainc.com>
Cc: target-devel <target-devel@vger.kernel.org>,
linux-scsi <linux-scsi@vger.kernel.org>,
lkml <linux-kernel@vger.kernel.org>,
Sagi Grimberg <sagig@mellanox.com>,
Christoph Hellwig <hch@lst.de>, Hannes Reinecke <hare@suse.de>,
Andy Grover <agrover@redhat.com>,
Vasu Dev <vasu.dev@linux.intel.com>, Vu Pham <vu@mellanox.com>,
Nicholas Bellinger <nab@linux-iscsi.org>
Subject: Re: [PATCH 2/4] target: Remove useless set_initiator_node_queue_depth acl lookup
Date: Fri, 8 Jan 2016 09:17:12 +0100 [thread overview]
Message-ID: <20160108081712.GB32138@lst.de> (raw)
In-Reply-To: <1452237348-2277-3-git-send-email-nab@daterainc.com>
On Fri, Jan 08, 2016 at 07:15:46AM +0000, Nicholas A. Bellinger wrote:
> From: Nicholas Bellinger <nab@linux-iscsi.org>
>
> With the changes in place to obtain se_node_acl->acl_kref
> from within core_tpg_del_initiator_node_acl() and auditing
> existing users, it's clear there is no need to perform the
> lookup during core_tpg_set_initiator_node_queue_depth().
>
> This is because se_node_acl->acl_group is already protecting
> the se_node_acl reference via configfs, and ->acl_group
> shutdown in core_tpg_del_initiator_node_acl() can't occur
> until core_tpg_set_initiator_node_queue_depth() completes.
>
> Also, remove a related pointless wrapper in iscsi-target.
While we're at it, can you please remove the always true
force argument from core_tpg_set_initiator_node_queue_depth and rename
the funcion to something like target_set_initiator_node_queue_depth.
Btw, what's the use case for modifying this on a 'live' session that
gets shutdown for that purpose? The whole algorithm looks somewhat
fishy to me to be honest.
next prev parent reply other threads:[~2016-01-08 8:17 UTC|newest]
Thread overview: 18+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-01-08 7:15 [PATCH 0/4] target: Close se_node_acl lookup race Nicholas A. Bellinger
2016-01-08 7:15 ` [PATCH 1/4] target: Obtain se_node_acl->acl_kref during get_initiator_node_acl Nicholas A. Bellinger
2016-01-08 8:14 ` Christoph Hellwig
2016-01-08 8:14 ` Christoph Hellwig
2016-01-08 8:31 ` Bart Van Assche
2016-01-08 8:35 ` Christoph Hellwig
2016-01-08 8:47 ` Nicholas A. Bellinger
2016-01-08 9:08 ` Christoph Hellwig
2016-01-08 9:37 ` Christoph Hellwig
2016-01-08 7:15 ` [PATCH 2/4] target: Remove useless set_initiator_node_queue_depth acl lookup Nicholas A. Bellinger
2016-01-08 8:17 ` Christoph Hellwig [this message]
2016-01-08 7:15 ` [PATCH 3/4] tcm_fc: Convert acl lookup to modern get_initiator_node_acl usage Nicholas A. Bellinger
2016-01-08 8:21 ` Christoph Hellwig
2016-01-08 9:05 ` Christoph Hellwig
2016-01-08 7:15 ` [PATCH 4/4] ib_srpt: " Nicholas A. Bellinger
2016-01-08 8:52 ` Bart Van Assche
2016-01-08 9:17 ` Nicholas A. Bellinger
2016-01-08 9:35 ` Bart Van Assche
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20160108081712.GB32138@lst.de \
--to=hch@lst.de \
--cc=agrover@redhat.com \
--cc=hare@suse.de \
--cc=linux-kernel@vger.kernel.org \
--cc=linux-scsi@vger.kernel.org \
--cc=nab@daterainc.com \
--cc=nab@linux-iscsi.org \
--cc=sagig@mellanox.com \
--cc=target-devel@vger.kernel.org \
--cc=vasu.dev@linux.intel.com \
--cc=vu@mellanox.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.