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authorNeilBrown <neilb@suse.de>2008-02-06 01:39:54 -0800
committerLinus Torvalds <torvalds@woody.linux-foundation.org>2008-02-06 10:41:18 -0800
commitc5d79adba7ced41d7ac097c2ab74759d10522dd5 (patch)
treeab5a45046244602f2a27be0b34fb26155a3c8dee /lib
parent1ec4a9398dc05061b6258061676fede733458893 (diff)
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>
Diffstat (limited to 'lib')
0 files changed, 0 insertions, 0 deletions