tree a8687fcb0ce62b130b732d663b54a984564d28b2
parent 25baf2da1473d9dcde1a4c7b0ab26e7d67d9bf62
author Mark Fasheh <mark.fasheh@oracle.com> 1171655210 -0800
committer Mark Fasheh <mark.fasheh@oracle.com> 1177624940 -0700

ocfs2: zero tail of sparse files on truncate

Since we don't zero on extend anymore, truncate needs to be fixed up to zero
the part of a file between i_size and and end of it's cluster. Otherwise a
subsequent extend could expose bad data.

This introduced a new helper, which can be used in ocfs2_write().

Signed-off-by: Mark Fasheh <mark.fasheh@oracle.com>