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NeilBrown c5d79adba7 md: allow devices to be shared between md arrays 
Currently, a given device is "claimed" by a particular array so that it cannot
be used by other arrays.

This is not ideal for DDF and other metadata schemes which have their own
partitioning concept.

So for externally managed metadata, just claim the device for md in general,
require that "offset" and "size" are set properly for each device, and make
sure that if a device is included in different arrays then the active sections
do not overlap.

This involves adding another flag to the rdev which makes it awkward to set
"->flags = 0" to clear certain flags.  So now clear flags explicitly by name
when we want to clear things.

Signed-off-by: Neil Brown <neilb@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-02-06 10:41:18 -08:00
..
raid6test md: raid6: clean up the style of raid6test/test.c 2008-02-06 10:41:18 -08:00
.gitignore
bitmap.c md: Update md bitmap during resync. 2008-02-06 10:41:18 -08:00
dm-bio-list.h dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-bio-record.h
dm-crypt.c dm crypt: use bio_add_page 2007-12-20 17:32:13 +00:00
dm-delay.c dm: bio_list macro renaming 2007-10-20 02:01:11 +01:00
dm-emc.c dm mpath: emc fix an error message 2007-10-20 02:01:12 +01:00
dm-exception-store.c
dm-hw-handler.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-hw-handler.h dm mpath: add retry pg init 2007-10-20 02:01:18 +01:00
dm-io.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
dm-io.h
dm-ioctl.c dm: trigger change uevent on rename 2007-12-20 17:32:11 +00:00
dm-linear.c
dm-log.c dm log: split suspend 2007-10-20 02:01:21 +01:00
dm-log.h dm log: split suspend 2007-10-20 02:01:21 +01:00
dm-mpath-hp-sw.c dm mpath: hp retry if not ready 2007-10-20 02:01:20 +01:00
dm-mpath-rdac.c dm mpath: rdac fix init race 2007-10-20 02:00:57 +01:00
dm-mpath.c dm mpath: send uevents 2007-10-20 02:01:27 +01:00
dm-mpath.h
dm-path-selector.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-path-selector.h
dm-raid1.c dm raid1: add mirror_set to struct mirror 2007-10-20 02:01:22 +01:00
dm-round-robin.c
dm-snap.c dm: use is_power_of_2 2007-10-20 02:01:06 +01:00
dm-snap.h
dm-stripe.c dm: use is_power_of_2 2007-10-20 02:01:06 +01:00
dm-table.c dm: merge max_hw_sector 2007-12-20 17:32:12 +00:00
dm-target.c dm: use kzalloc 2007-10-20 02:01:07 +01:00
dm-uevent.c dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-uevent.h dm: uevent generate events 2007-10-20 02:01:26 +01:00
dm-zero.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
dm.c Driver core: convert block from raw kobjects to core devices 2008-01-24 20:40:36 -08:00
dm.h dm: trigger change uevent on rename 2007-12-20 17:32:11 +00:00
faulty.c Drop 'size' argument from bio_endio and bi_end_io 2007-10-10 09:25:57 +02:00
Kconfig dm mpath: hp requires scsi 2007-12-20 17:32:09 +00:00
kcopyd.c kcopyd use mutex instead of semaphore 2007-10-20 02:01:08 +01:00
kcopyd.h
linear.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
Makefile dm: add uevent to core 2007-10-20 02:01:24 +01:00
md.c md: allow devices to be shared between md arrays 2008-02-06 10:41:18 -08:00
mktables.c md: raid6: Fix mktable.c 2008-02-06 10:41:18 -08:00
multipath.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
raid0.c Add UNPLUG traces to all appropriate places 2007-11-09 13:41:32 +01:00
raid1.c md: allow a maximum extent to be set for resyncing 2008-02-06 10:41:18 -08:00
raid5.c md: allow a maximum extent to be set for resyncing 2008-02-06 10:41:18 -08:00
raid6.h
raid6algos.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6altivec.uc
raid6int.uc
raid6mmx.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6recov.c
raid6sse1.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6sse2.c x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid6x86.h x86 merge fallout: uml 2007-10-29 07:41:32 -07:00
raid10.c md: allow a maximum extent to be set for resyncing 2008-02-06 10:41:18 -08:00
unroll.pl