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virtio-blk: fix request leak.

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Must drop reference taken by blk_make_request().

Signed-off-by: Mike Snitzer <snitzer@redhat.com>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: stable@kernel.org # .35.x
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Mike Snitzer 2010-10-09 12:12:13 +10:30 committed by Linus Torvalds
parent 6b0cd00bc3
commit e4c4776dea
1 changed files with 5 additions and 1 deletions
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6
drivers/block/virtio_blk.c
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@ -202,6 +202,7 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
struct virtio_blk *vblk = disk->private_data;
struct request *req;
struct bio *bio;
int err;
bio = bio_map_kern(vblk->disk->queue, id_str, VIRTIO_BLK_ID_BYTES,
GFP_KERNEL);
@ -215,7 +216,10 @@ static int virtblk_get_id(struct gendisk *disk, char *id_str)
}
req->cmd_type = REQ_TYPE_SPECIAL;
return blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
err = blk_execute_rq(vblk->disk->queue, vblk->disk, req, false);
blk_put_request(req);
return err;
}
static int virtblk_locked_ioctl(struct block_device *bdev, fmode_t mode,