tree e9c021770b73fd407f2caaa38e3db74d4d76a564
parent 88aa3cff4e9a38b953de9fbc54c96e619a2bb9f9
author Josef Bacik <jbacik@redhat.com> 1219198421 -0400
committer Theodore Ts'o <tytso@mit.edu> 1219198421 -0400

ext4: don't try to resize if there are no reserved gdt blocks left

When trying to resize an ext4 fs and you run out of reserved gdt blocks,
you get an error that doesn't actually tell you what went wrong, it just
says that the gdb it picked is not correct, which is the case since you
don't have any reserved gdt blocks left.  This patch adds a check to make
sure you have reserved gdt blocks to use, and if not prints out a more
relevant error.

Signed-off-by: Josef Bacik <jbacik@redhat.com>
Cc: <linux-ext4@vger.kernel.org>
Cc: Andreas Dilger <adilger@sun.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: "Theodore Ts'o" <tytso@mit.edu>