bsg: setting rq->bio to NULL
Due to commit 1cd96c242a829d52f7a5ae98f554ca9775429685 ("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>
diff --git a/block/bsg.c b/block/bsg.c
index 206060e..dd81be4 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -315,6 +315,7 @@
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 @@
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 @@
blk_rq_unmap_user(bio);
if (rq->cmd != rq->__cmd)
kfree(rq->cmd);
+ rq->bio = NULL;
blk_put_request(rq);
return ret;