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block: make blk_rq_map_user() clear ->bio if it unmaps it

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That way the interface is symmetric, and calling blk_rq_unmap_user()
on the request wont oops.

Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
Jens Axboe 2008-02-18 13:51:56 +01:00
parent 86b6c7a7f7
commit 84e9e03c55
1 changed files with 1 additions and 0 deletions
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block/blk-map.c
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@ -143,6 +143,7 @@ int blk_rq_map_user(struct request_queue *q, struct request *rq,
return 0; return 0;
unmap_rq: unmap_rq:
blk_rq_unmap_user(bio); blk_rq_unmap_user(bio);
rq->bio = NULL;
return ret; return ret;
} }
EXPORT_SYMBOL(blk_rq_map_user); EXPORT_SYMBOL(blk_rq_map_user);