new helper: ext2_image_size()
authorAl Viro <viro@zeniv.linux.org.uk>
Fri, 23 Mar 2012 20:36:45 +0000 (16:36 -0400)
committerAl Viro <viro@zeniv.linux.org.uk>
Sat, 31 Mar 2012 20:03:16 +0000 (16:03 -0400)
... implemented that way since the next commit will leave it
almost alone in ext2_fs.h - most of the file (including
struct ext2_super_block) is going to move to fs/ext2/ext2.h.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>

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