Changes Prior to 2.5.5 release
- Don't #include linux/blkpg.h as that isn't safe. Just
include the content literally.
- Reduce maximum bitmap usage when working with bitmap files,
so that a only single-page allocations are made, even on
64bit hosts with 4K pages.
- Close stray fd in mdassemble so that it can assemble stacked
devices
- If mdassemble finds an array already assembled, it marks it
read-write.
- Remove error in md_open if array is already active. This isn't
needed and gets in the ways if an array was created e.g. in
initramfs, but device doesn't yet exist in /dev.
- When --assemble --scan is run, if all arrays that could be found
have already been started, don't report an error.
- Fix a couple of bugs related to raid10 and the new 'offset' layout.
- Improve error message when a wrong '--update' option is given.
