Bugzilla – Attachment #16286: infoleak-patch-2.4 for bug #50212
bh = getblk(journal->j_dev, blocknr, journal->j_blocksize);
lock_buffer(bh);
memset(bh->b_data, 0, journal->j_blocksize);
BUFFER_TRACE(bh, "return this buffer");
return journal_add_journal_head(bh);
}