commit 01fc48e8929e45e67527200017cff4e74e4ba054
author Theodore Ts'o <tytso@mit.edu> Fri Aug 17 09:46:17 2012 -0400
committer Theodore Ts'o <tytso@mit.edu> Fri Aug 17 09:46:17 2012 -0400
tree e1a4bfe958e9bb0dc2064c45fa2a0db498236a08
parent ecb94f5fdf4b72547fca022421a9dca1672bddd4

ext4: don't load the block bitmap for block groups which have no space

Add a short circuit check to ext4_mb_group_group() so that we don't
bother to load the block bitmap for a block group which does not have
any space available.  (Or which does not have enough space until we
are in desperation mode, i.e., when cr == 3.)

Resolves-bug: https://bugzilla.kernel.org/show_bug.cgi?id=45741
Reported-by: mirek@me.com
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>