tree c997526bd60d3fb5cafea604e5b240c2479e20d9
parent bf07bb7d5be813630d3530be274b3324f85e310c
author NeilBrown <neilb@suse.de> 1337658907 +1000
committer NeilBrown <neilb@suse.de> 1337658907 +1000

md/bitmap: add new 'space' attribute for bitmaps.

If we are to allow bitmaps to be resized when the array is resized,
we need to know how much space there is.

So create an attribute to store this information and set appropriate
defaults.

It can be set more precisely via sysfs, or future metadata extensions
may allow it to be recorded.

Signed-off-by: NeilBrown <neilb@suse.de>