From: Mike Snitzer <snitzer@redhat.com>
To: dm-devel@redhat.com
Cc: jmoyer@redhat.com, linux-block@vger.kernel.org,
linux-scsi@vger.kernel.org, j-nomura@ce.jp.nec.com, hare@suse.de,
sagig@dev.mellanox.co.il, Mike Snitzer <snitzer@redhat.com>
Subject: [RFC PATCH 3/4] dm mpath: move trigger_event member to the end of 'struct multipath'
Date: Thu, 31 Mar 2016 16:04:25 -0400 [thread overview]
Message-ID: <1459454666-76428-4-git-send-email-snitzer@redhat.com> (raw)
In-Reply-To: <1459454666-76428-1-git-send-email-snitzer@redhat.com>
Allows the 'work_mutex' member to no longer cross a cacheline.
Signed-off-by: Mike Snitzer <snitzer@redhat.com>
---
drivers/md/dm-mpath.c | 3 +--
1 file changed, 1 insertion(+), 2 deletions(-)
diff --git a/drivers/md/dm-mpath.c b/drivers/md/dm-mpath.c
index 780e5d0..54daf96 100644
--- a/drivers/md/dm-mpath.c
+++ b/drivers/md/dm-mpath.c
@@ -89,8 +89,6 @@ struct multipath {
atomic_t pg_init_in_progress; /* Only one pg_init allowed at once */
atomic_t pg_init_count; /* Number of times pg_init called */
- struct work_struct trigger_event;
-
/*
* We must use a mempool of dm_mpath_io structs so that we
* can resubmit bios on error.
@@ -98,6 +96,7 @@ struct multipath {
mempool_t *mpio_pool;
struct mutex work_mutex;
+ struct work_struct trigger_event;
};
/*
--
2.6.4 (Apple Git-63)
next prev parent reply other threads:[~2016-03-31 20:04 UTC|newest]
Thread overview: 23+ 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
2016-03-31 20:04 ` Mike Snitzer [this message]
2016-04-01 8:50 ` [dm-devel] [RFC PATCH 3/4] dm mpath: move trigger_event member to the end " 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 15:34 ` Mike Snitzer
2016-04-08 11:42 ` [dm-devel] " Johannes Thumshirn
2016-04-08 19:29 ` Mike Snitzer
2016-04-13 7:03 ` [dm-devel] " Johannes Thumshirn
2016-05-09 15:48 ` Bart Van Assche
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