The patch below adds online resize capability to ext3 based on Andreas
patch for 2.4 and fixed up by Stephen.

The patch also removes s_debts:

s_debts is currently not used by ext3 (it is created, destroyed and checked
but never set).  Remove it for now.

Resurrecting this will require adding it back in changed form.  In existing
form it's already unsafe wrt.  byte-tearing as it performs unlocked byte
increment/decrement on words which may be being accessed simultaneously on
other CPUs.  It is also the only in-memory dynamic table which needs to be
extended by online-resize, so locking it will require care.
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>