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
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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(-)
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