From: Hannes Reinecke <hare@suse.de>
To: Mike Snitzer <snitzer@redhat.com>, dm-devel@redhat.com
Cc: jmoyer@redhat.com, linux-block@vger.kernel.org,
linux-scsi@vger.kernel.org, j-nomura@ce.jp.nec.com,
sagig@dev.mellanox.co.il
Subject: Re: [RFC PATCH 2/4] dm mpath: use atomic_t for counting members of 'struct multipath'
Date: Thu, 7 Apr 2016 17:02:28 +0200 [thread overview]
Message-ID: <57067684.7090307@suse.de> (raw)
In-Reply-To: <1459454666-76428-3-git-send-email-snitzer@redhat.com>
On 03/31/2016 10:04 PM, Mike Snitzer wrote:
> The use of atomic_t for nr_valid_paths, pg_init_in_progress and
> pg_init_count will allow relaxing the use of the m->lock spinlock.
>
> Suggested-by: Hannes Reinecke <hare@suse.de>
> Signed-off-by: Mike Snitzer <snitzer@redhat.com>
> ---
> drivers/md/dm-mpath.c | 61 ++++++++++++++++++++++++++++-----------------------
> 1 file changed, 33 insertions(+), 28 deletions(-)
>
Reviewed-by: Hannes Reinecke <hare@suse.com>
Tested-by: Hannes Reinecke <hare@suse.com>
Cheers,
Hannes
--
Dr. Hannes Reinecke Teamlead Storage & Networking
hare@suse.de +49 911 74053 688
SUSE LINUX GmbH, Maxfeldstr. 5, 90409 Nürnberg
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next prev parent reply other threads:[~2016-04-07 15:02 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-03-31 20:04 [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance Mike Snitzer
2016-03-31 20:04 ` [RFC PATCH 1/4] dm mpath: switch to using bitops for state flags Mike Snitzer
2016-04-01 8:46 ` [dm-devel] " Johannes Thumshirn
2016-04-07 14:59 ` Hannes Reinecke
2016-03-31 20:04 ` [RFC PATCH 2/4] dm mpath: use atomic_t for counting members of 'struct multipath' Mike Snitzer
2016-04-01 8:48 ` [dm-devel] " Johannes Thumshirn
2016-04-07 15:02 ` Hannes Reinecke [this message]
2016-03-31 20:04 ` [RFC PATCH 3/4] dm mpath: move trigger_event member to the end " Mike Snitzer
2016-04-01 8:50 ` [dm-devel] " Johannes Thumshirn
2016-04-07 15:03 ` Hannes Reinecke
2016-03-31 20:04 ` [RFC PATCH 4/4] dm mpath: eliminate use of spinlock in IO fast-paths Mike Snitzer
2016-04-01 9:02 ` [dm-devel] " Johannes Thumshirn
2016-04-07 15:03 ` Hannes Reinecke
2016-04-01 8:12 ` [dm-devel] [RFC PATCH 0/4] dm mpath: vastly improve blk-mq IO performance Johannes Thumshirn
2016-04-01 13:22 ` Mike Snitzer
2016-04-01 13:37 ` Johannes Thumshirn
2016-04-01 14:14 ` Mike Snitzer
2016-04-07 14:58 ` Hannes Reinecke
2016-04-07 14:58 ` Hannes Reinecke
2016-04-07 15:34 ` Mike Snitzer
2016-04-08 11:42 ` [dm-devel] " Johannes Thumshirn
2016-04-08 11:42 ` Johannes Thumshirn
2016-04-08 19:29 ` Mike Snitzer
2016-04-13 7:03 ` [dm-devel] " Johannes Thumshirn
2016-04-13 7:03 ` Johannes Thumshirn
2016-05-09 15:48 ` Bart Van Assche
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