tree 28a7473238932f1e7ade1a5a5ec67a113b6d6205
parent 6a07997fc34ac15a1c5dc650285d79b7604a2276
author NeilBrown <neilb@cse.unsw.edu.au> 1126308225 -0700
committer Linus Torvalds <torvalds@g5.osdl.org> 1126309150 -0700

[PATCH] md: all hot-add and hot-remove of md intent logging bitmaps

Both file-bitmaps and superblock bitmaps are supported.

If you add a bitmap file on the array device, you lose.

This introduces a 'default_bitmap_offset' field in mddev, as the ioctl used
for adding a superblock bitmap doesn't have room for giving an offset.  Later,
this value will be setable via sysfs.

Signed-off-by: Neil Brown <neilb@cse.unsw.edu.au>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>