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H A Dsuper.cdiff b003b52496b9bea9b186b127aea730b79d2a83bd Tue Nov 25 22:27:44 CET 2014 Eric Sandeen <sandeen@redhat.com> ext4: don't count external journal blocks as overhead

This was fixed for ext3 with:

e6d8fb3 ext3: Count internal journal as bsddf overhead in ext3_statfs

but was never fixed for ext4.

With a large external journal and no used disk blocks, df comes
out negative without this, as journal blocks are added to the
overhead & subtracted from used blocks unconditionally.

Signed-off-by: Eric Sandeen <sandeen@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>