tree 1058692daeb436919cb9e1331719b42fc7278981
parent f70af46a52b3c354643c92e8a59b34a86472559d
author Lukas Czerner <lczerner@redhat.com> 1526254115 -0400
committer Greg Kroah-Hartman <gregkh@linuxfoundation.org> 1529971589 +0800

ext4: update mtime in ext4_punch_hole even if no blocks are released

commit eee597ac931305eff3d3fd1d61d6aae553bc0984 upstream.

Currently in ext4_punch_hole we're going to skip the mtime update if
there are no actual blocks to release. However we've actually modified
the file by zeroing the partial block so the mtime should be updated.

Moreover the sync and datasync handling is skipped as well, which is
also wrong. Fix it.

Signed-off-by: Lukas Czerner <lczerner@redhat.com>
Signed-off-by: Theodore Ts'o <tytso@mit.edu>
Reported-by: Joe Habermann <joe.habermann@quantum.com>
Cc: <stable@vger.kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>