tree 9f352c64a8d2cb8330600c11e8dc9855af9c63be
parent f5a44db5d2d677dfbf12deee461f85e9ec633961
author Eric Whitney <enwlinux@gmail.com> 1389034823 -0500
committer Theodore Ts'o <tytso@mit.edu> 1389034823 -0500

ext4: fix bigalloc regression

Commit f5a44db5d2 introduced a regression on filesystems created with
the bigalloc feature (cluster size > blocksize).  It causes xfstests
generic/006 and /013 to fail with an unexpected JBD2 failure and
transaction abort that leaves the test file system in a read only state.
Other xfstests run on bigalloc file systems are likely to fail as well.

The cause is the accidental use of a cluster mask where a cluster
offset was needed in ext4_ext_map_blocks().

Signed-off-by: Eric Whitney <enwlinux@gmail.com>