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linux-sg2042
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bsg: setting rq->bio to NULL 

Due to commit 1cd96c242a ("block: WARN
in __blk_put_request() for potential bio leak"), BSG SMP requests get
the false warnings:

WARNING: at block/blk-core.c:1068 __blk_put_request+0x52/0xc0()

This sets rq->bio to NULL to avoid that false warnings.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
This commit is contained in:
FUJITA Tomonori 2009-06-09 15:17:37 +02:00 committed by Jens Axboe
parent 3af968e066
commit c1d4c41f2f
1 changed files with 3 additions and 0 deletions
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3
block/bsg.c
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@ -315,6 +315,7 @@ out:
blk_put_request(rq);
if (next_rq) {
blk_rq_unmap_user(next_rq->bio);
next_rq->bio = NULL;
blk_put_request(next_rq);
}
return ERR_PTR(ret);
@ -448,6 +449,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
hdr->dout_resid = rq->data_len;
hdr->din_resid = rq->next_rq->data_len;
blk_rq_unmap_user(bidi_bio);
rq->next_rq->bio = NULL;
blk_put_request(rq->next_rq);
} else if (rq_data_dir(rq) == READ)
hdr->din_resid = rq->data_len;
@ -466,6 +468,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
blk_rq_unmap_user(bio);
if (rq->cmd != rq->__cmd)
kfree(rq->cmd);
rq->bio = NULL;
blk_put_request(rq);
return ret;