tree 018d3ab9fa0d6e2bcd739483ac2693f6f71db96b
parent f028f3b2f987ebc61cef382ab7a5c449917b728e
author Boaz Harrosh <bharrosh@panasas.com> 1237894507 +0100
committer Jens Axboe <jens.axboe@oracle.com> 1238061683 +0100

block: WARN in __blk_put_request() for potential bio leak

Put a WARN_ON in __blk_put_request if it is about to
leak bio(s). This is a serious bug that can happen in error
handling code paths.

For this to work I have fixed a couple of places in block/ where
request->bio != NULL ownership was not honored. And a small cleanup
at sg_io() while at it.

Signed-off-by: Boaz Harrosh <bharrosh@panasas.com>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>