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75a73a29e5
tmp_suning_uos_patched/drivers/md
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NeilBrown 75a73a29e5 md: restore ability of spare drives to spin down. 
Some time ago we stopped the clean/active metadata updates
from being written to a 'spare' device in most cases so that
it could spin down and say spun down.  Device failure/removal
etc are still recorded on spares.

However commit 51d5668cb2 broke this 50% of the time,
depending on whether the event count is even or odd.
The change log entry said:

   This means that the alignment between 'odd/even' and
    'clean/dirty' might take a little longer to attain,

how ever the code makes no attempt to create that alignment, so it
could take arbitrarily long.

So when we find that clean/dirty is not aligned with odd/even,
force a second metadata-update immediately.  There are already cases
where a second metadata-update is needed immediately (e.g. when a
device fails during the metadata update).  We just piggy-back on that.

Reported-by: Joe Bryant <tenminjoe@yahoo.com>
Signed-off-by: NeilBrown <neilb@suse.de>
Cc: stable@kernel.org
2010-05-18 15:28:00 +10:00
..
raid6test md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
.gitignore
bitmap.c md/raid1: delay reads that could overtake behind-writes. 2010-05-18 15:27:57 +10:00
bitmap.h md/raid1: delay reads that could overtake behind-writes. 2010-05-18 15:27:57 +10:00
dm-bio-record.h
dm-crypt.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-delay.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-exception-store.c dm snapshot: move cow ref from exception store to snap core 2009-12-10 23:52:12 +00:00
dm-exception-store.h dm snapshot: add merging 2009-12-10 23:52:32 +00:00
dm-io.c dm io: handle empty barriers 2009-12-10 23:52:22 +00:00
dm-ioctl.c dm ioctl: introduce flag indicating uevent was generated 2010-03-06 02:32:31 +00:00
dm-kcopyd.c dm kcopyd: accept zero size jobs 2009-12-10 23:52:13 +00:00
dm-linear.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-log-userspace-base.c dm log: userspace fix incorrect luid cast in userspace_ctr 2009-10-16 23:18:15 +01:00
dm-log-userspace-transfer.c dm log: userspace fix overhead_size calcuations 2010-02-16 18:42:53 +00:00
dm-log-userspace-transfer.h dm log: userspace add luid to distinguish between concurrent log instances 2009-09-04 20:40:34 +01:00
dm-log.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-mpath.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-mpath.h
dm-path-selector.c
dm-path-selector.h dm mpath: add start_io and nr_bytes to path selectors 2009-06-22 10:12:27 +01:00
dm-queue-length.c dm mpath: add queue length load balancer 2009-06-22 10:12:27 +01:00
dm-raid1.c dm raid1: fix deadlock when suspending failed device 2010-03-06 02:32:35 +00:00
dm-region-hash.c dm raid1: fix null pointer dereference in suspend 2010-02-16 18:42:58 +00:00
dm-round-robin.c dm mpath: add start_io and nr_bytes to path selectors 2009-06-22 10:12:27 +01:00
dm-service-time.c dm mpath: add service time load balancer 2009-06-22 10:12:28 +01:00
dm-snap-persistent.c dm snapshot: persistent annotate work_queue as on stack 2010-02-16 18:42:51 +00:00
dm-snap-transient.c dm snapshot: move cow ref from exception store to snap core 2009-12-10 23:52:12 +00:00
dm-snap.c dm: eliminate some holes data structures 2010-03-06 02:32:33 +00:00
dm-stripe.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-sysfs.c dm: sysfs revert add empty release function to avoid debug warning 2010-02-16 18:43:04 +00:00
dm-table.c dm table: remove unused dm_get_device range parameters 2010-03-06 02:32:27 +00:00
dm-target.c
dm-uevent.c dm table: remove dm_get from dm_table_get_md 2010-03-06 02:29:52 +00:00
dm-uevent.h
dm-zero.c
dm.c dm ioctl: introduce flag indicating uevent was generated 2010-03-06 02:32:31 +00:00
dm.h dm ioctl: introduce flag indicating uevent was generated 2010-03-06 02:32:31 +00:00
faulty.c md: pass mddev to make_request functions rather than request_queue 2010-05-18 15:27:55 +10:00
Kconfig md: remove EXPERIMENTAL designation from RAID10 2010-05-18 15:27:58 +10:00
linear.c md/linear: standardise all printk messages 2010-05-18 15:27:59 +10:00
linear.h
Makefile md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
md.c md: restore ability of spare drives to spin down. 2010-05-18 15:28:00 +10:00
md.h md: pass mddev to make_request functions rather than request_queue 2010-05-18 15:27:55 +10:00
mktables.c
multipath.c md: pass mddev to make_request functions rather than request_queue 2010-05-18 15:27:55 +10:00
multipath.h
raid0.c md/raid0: tidy up printk messages. 2010-05-18 15:27:59 +10:00
raid0.h md: Add support for Raid5->Raid0 and Raid10->Raid0 takeover 2010-05-18 15:27:48 +10:00
raid1.c md: Fix read balancing in RAID1 and RAID10 on drives > 2TB 2010-05-18 15:28:00 +10:00
raid1.h md/raid1: add takeover support for raid5->raid1 2009-12-14 12:51:41 +11:00
raid5.c md/raid5: improve consistency of error messages. 2010-05-18 15:27:58 +10:00
raid5.h percpu: add __percpu sparse annotations to what's left 2010-02-17 11:17:38 +09:00
raid6algos.c md: add MODULE_DESCRIPTION for all md related modules. 2009-12-14 12:51:41 +11:00
raid6altivec.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6int.uc md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00
raid6mmx.c
raid6recov.c
raid6sse1.c
raid6sse2.c
raid6x86.h
raid10.c md: Fix read balancing in RAID1 and RAID10 on drives > 2TB 2010-05-18 15:28:00 +10:00
raid10.h md: Add support for Raid0->Raid10 takeover 2010-05-18 15:27:48 +10:00
unroll.awk md: drivers/md/unroll.pl replaced with awk analog 2009-10-16 16:25:19 +11:00