From: NeilBrown <neilb@suse.com>
To: Shaohua Li <shli@kernel.org>
Cc: linux-raid@vger.kernel.org
Subject: [md PATCH 0/5] Address deadlock associated with setting suspend_lo
Date: Tue, 17 Oct 2017 13:46:43 +1100 [thread overview]
Message-ID: <150820826980.1646.6380214598725492144.stgit@noble> (raw)
This series fixes the issue that Xiao Ni found
where a deadlock can happen if there are active writes
to an md/raid5 waiting for suspend_lo to be increased.
The last patch contains the important fix. The others
prepare for it so that it can work reliably.
Thanks,
NeilBrown
---
NeilBrown (5):
md: always hold reconfig_mutex when calling mddev_suspend()
md: don't call bitmap_create() while array is quiesced.
md: move suspend_hi/lo handling into core md code
md: use mddev_suspend/resume instead of ->quiesce()
md: allow metadata update while suspending.
drivers/md/dm-raid.c | 5 ++-
drivers/md/md.c | 74 ++++++++++++++++++++++++++++++++++------------
drivers/md/md.h | 6 ++++
drivers/md/raid1.c | 12 ++-----
drivers/md/raid5-cache.c | 18 ++++++++---
drivers/md/raid5.c | 22 --------------
6 files changed, 82 insertions(+), 55 deletions(-)
--
Signature
next reply other threads:[~2017-10-17 2:46 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-17 2:46 NeilBrown [this message]
2017-10-17 2:46 ` [md PATCH 3/5] md: move suspend_hi/lo handling into core md code NeilBrown
2017-10-18 6:16 ` Shaohua Li
2017-10-18 7:40 ` NeilBrown
2017-10-19 1:49 ` [md PATCH 6/5] md: remove special meaning of ->quiesce(.., 2) NeilBrown
2017-10-17 2:46 ` [md PATCH 2/5] md: don't call bitmap_create() while array is quiesced NeilBrown
2017-10-17 2:46 ` [md PATCH 5/5] md: allow metadata update while suspending NeilBrown
2017-10-17 2:46 ` [md PATCH 1/5] md: always hold reconfig_mutex when calling mddev_suspend() NeilBrown
2017-10-18 6:11 ` Shaohua Li
2017-10-18 7:35 ` NeilBrown
2017-10-19 1:17 ` [md PATCH 1/5 v2] " NeilBrown
2017-10-19 3:45 ` Shaohua Li
2017-10-19 6:29 ` NeilBrown
2017-10-20 4:37 ` Shaohua Li
2017-10-23 0:02 ` NeilBrown
2017-10-23 1:48 ` Shaohua Li
2017-10-17 2:46 ` [md PATCH 4/5] md: use mddev_suspend/resume instead of ->quiesce() NeilBrown
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