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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
..
acpi
asm-alpha alpha: fix warning by fixing flush_tlb_kernel_range() 2008-02-05 09:44:22 -08:00
asm-arm FB/S3C2412: add S3C2412 support to S3C2410 fb driver 2008-02-06 10:41:17 -08:00
asm-avr32 Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
asm-blackfin remove mm_{ptov,vtop}() 2008-02-06 10:41:01 -08:00
asm-cris cris: remove unused __dummy, CONST_ADDR and ADDR from bitops.h 2008-02-05 09:44:24 -08:00
asm-frv timerfd: fix remaining architectures 2008-02-05 14:37:15 -08:00
asm-generic remove support for un-needed _extratext section 2008-02-06 10:41:01 -08:00
asm-h8300 remove mm_{ptov,vtop}() 2008-02-06 10:41:01 -08:00
asm-ia64 Merge branch 'release' of git://git.kernel.org/pub/scm/linux/kernel/git/aegl/linux-2.6 2008-02-05 10:24:52 -08:00
asm-m32r Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
asm-m68k cleanup after APUS removal 2008-02-06 10:41:01 -08:00
asm-m68knommu remove mm_{ptov,vtop}() 2008-02-06 10:41:01 -08:00
asm-mips add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
asm-parisc add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
asm-powerpc ps3: use symbolic names for video modes 2008-02-06 10:41:17 -08:00
asm-ppc add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
asm-s390 taskstats scaled time cleanup 2008-02-06 10:41:00 -08:00
asm-sh Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
asm-sparc add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
asm-sparc64 read_current_timer() cleanups 2008-02-06 10:41:02 -08:00
asm-um uml: LDT mutex conversion 2008-02-05 09:44:31 -08:00
asm-v850 remove mm_{ptov,vtop}() 2008-02-06 10:41:01 -08:00
asm-x86 Fix __const_udelay declaration and definition mismatches 2008-02-06 10:41:06 -08:00
asm-xtensa add mm argument to pte/pmd/pud/pgd_free 2008-02-05 09:44:18 -08:00
crypto
keys
linux md: allow devices to be shared between md arrays 2008-02-06 10:41:18 -08:00
math-emu
media
mtd
net Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-2.6 2008-02-05 10:09:07 -08:00
pcmcia pcmcia: replace kio_addr_t with unsigned int everywhere 2008-02-05 09:44:08 -08:00
rdma
rxrpc
scsi
sound
video atmel_lcdfb: backlight control 2008-02-06 10:41:16 -08:00
xen
Kbuild