tree ce05111dbb00fae81d0c0b7726ddac5c0117ec34
parent 7beaf243787f85a2ef9213ccf13ab4a243283fde
author Tao Ma <tao.ma@oracle.com> 1279778205 +0800
committer Joel Becker <joel.becker@oracle.com> 1281203089 -0700

ocfs2: Count more refcount records in file system fragmentation.

The refcount record calculation in ocfs2_calc_refcount_meta_credits
is too optimistic that we can always allocate contiguous clusters
and handle an already existed refcount rec as a whole. Actually
because of file system fragmentation, we may have the chance to split
a refcount record into 3 parts during the transaction. So consider
the worst case in record calculation.

Cc: stable@kernel.org
Signed-off-by: Tao Ma <tao.ma@oracle.com>
Signed-off-by: Joel Becker <joel.becker@oracle.com>