[SCSI] SCSI core: fix leakage of scsi_cmnd's

Actually, just one problem and one cosmetic fix:

1) We need to dequeue for the loop and kill case (it seems easiest
simply to dequeue in the scsi_kill_request() routine)
2) There's no real need to drop the queue lock.  __scsi_done() is lock
agnostic, so since there's no requirement, let's just leave it in to
avoid any locking issues.

Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 003f8cf..d8d9848 100644 (file)
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -1370,7 +1370,8 @@ static void scsi_kill_request(struct request *req, request_queue_t *q)
 {
        struct scsi_cmnd *cmd = req->special;
 
-       spin_unlock(q->queue_lock);
+       blkdev_dequeue_request(req);
+
        if (unlikely(cmd == NULL)) {
                printk(KERN_CRIT "impossible request in %s.\n",
                                 __FUNCTION__);
@@ -1381,7 +1382,6 @@ static void scsi_kill_request(struct request *req, request_queue_t *q)
        cmd->result = DID_NO_CONNECT << 16;
        atomic_inc(&cmd->device->iorequest_cnt);
        __scsi_done(cmd);
-       spin_lock(q->queue_lock);
 }
 
 /*
@@ -1432,7 +1432,6 @@ static void scsi_request_fn(struct request_queue *q)
                if (unlikely(!scsi_device_online(sdev))) {
                        printk(KERN_ERR "scsi%d (%d:%d): rejecting I/O to offline device\n",
                               sdev->host->host_no, sdev->id, sdev->lun);
-                       blkdev_dequeue_request(req);
                        scsi_kill_request(req, q);
                        continue;
                }