Re: [2.6.24 REGRESSION] BUG: Soft lockup - with VFS

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On Tue, 5 Feb 2008 14:05:06 -0800, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> wrote:

> > > http://students.zipernowsky.hu/~oliverp/kernel/regression_2624/

> I think ub.c is basically abandoned in favour of usb-storage.
> If so, perhaps we should remove or disble ub.c?

Looks like it's just Tomo or Jens made a mistake when converting to
the new s/g API. Nothing to be too concerned about. I know I should've
reviewed their patch closer, but it seemed too simple...

-- Pete

Fix up the conversion to sg_init_table().

Signed-off-by: Pete Zaitcev <zaitcev@xxxxxxxxxx>

--- a/drivers/block/ub.c
+++ b/drivers/block/ub.c
@@ -657,7 +657,6 @@ static int ub_request_fn_1(struct ub_lun *lun, struct request *rq)
 	if ((cmd = ub_get_cmd(lun)) == NULL)
 		return -1;
 	memset(cmd, 0, sizeof(struct ub_scsi_cmd));
-	sg_init_table(cmd->sgv, UB_MAX_REQ_SG);
 
 	blkdev_dequeue_request(rq);
 
@@ -668,6 +667,7 @@ static int ub_request_fn_1(struct ub_lun *lun, struct request *rq)
 	/*
 	 * get scatterlist from block layer
 	 */
+	sg_init_table(&urq->sgv[0], UB_MAX_REQ_SG);
 	n_elem = blk_rq_map_sg(lun->disk->queue, rq, &urq->sgv[0]);
 	if (n_elem < 0) {
 		/* Impossible, because blk_rq_map_sg should not hit ENOMEM. */
-
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