set relay file can not be read by pread(2)

I found that relay files can be read by pread(2). I fix it,
for relay files are not capable of seeking.

Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Lai Jiangshan 2008-03-26 12:01:28 +01:00 committed by Jens Axboe
commit 37529fe9f6