Merge branch 'linus' into tracing/blktrace

Conflicts:
	block/blktrace.c

Semantic merge:
	kernel/trace/blktrace.c

Signed-off-by: Ingo Molnar <mingo@elte.hu>

3 files changed, 26 insertions, 8 deletions

diff --git a/block/blk-timeout.c b/block/blk-timeout.c
index a09535377a9..bbbdc4b8ccf 100644
--- a/block/blk-timeout.c
+++ b/block/blk-timeout.c
@@ -209,12 +209,19 @@ void blk_abort_queue(struct request_queue *q)
 {
 	unsigned long flags;
 	struct request *rq, *tmp;
+	LIST_HEAD(list);
 
 	spin_lock_irqsave(q->queue_lock, flags);
 
 	elv_abort_queue(q);
 
-	list_for_each_entry_safe(rq, tmp, &q->timeout_list, timeout_list)
+	/*
+	 * Splice entries to local list, to avoid deadlocking if entries
+	 * get readded to the timeout list by error handling
+	 */
+	list_splice_init(&q->timeout_list, &list);
+
+	list_for_each_entry_safe(rq, tmp, &list, timeout_list)
 		blk_abort_request(rq);
 
 	spin_unlock_irqrestore(q->queue_lock, flags);
diff --git a/block/bsg.c b/block/bsg.c
index d414bb5607e..0ce8806dd0c 100644
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -244,7 +244,8 @@ bsg_validate_sgv4_hdr(struct request_queue *q, struct sg_io_v4 *hdr, int *rw)
  * map sg_io_v4 to a request.
  */
 static struct request *
-bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
+bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm,
+	    u8 *sense)
 {
 	struct request_queue *q = bd->queue;
 	struct request *rq, *next_rq = NULL;
@@ -306,6 +307,10 @@ bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
 		if (ret)
 			goto out;
 	}
+
+	rq->sense = sense;
+	rq->sense_len = 0;
+
 	return rq;
 out:
 	if (rq->cmd != rq->__cmd)
@@ -348,9 +353,6 @@ static void bsg_rq_end_io(struct request *rq, int uptodate)
 static void bsg_add_command(struct bsg_device *bd, struct request_queue *q,
 			    struct bsg_command *bc, struct request *rq)
 {
-	rq->sense = bc->sense;
-	rq->sense_len = 0;
-
 	/*
 	 * add bc command to busy queue and submit rq for io
 	 */
@@ -419,7 +421,7 @@ static int blk_complete_sgv4_hdr_rq(struct request *rq, struct sg_io_v4 *hdr,
 {
 	int ret = 0;
 
-	dprintk("rq %p bio %p %u\n", rq, bio, rq->errors);
+	dprintk("rq %p bio %p 0x%x\n", rq, bio, rq->errors);
 	/*
 	 * fill in all the output members
 	 */
@@ -635,7 +637,7 @@ static int __bsg_write(struct bsg_device *bd, const char __user *buf,
 		/*
 		 * get a request, fill in the blanks, and add to request queue
 		 */
-		rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm);
+		rq = bsg_map_hdr(bd, &bc->hdr, has_write_perm, bc->sense);
 		if (IS_ERR(rq)) {
 			ret = PTR_ERR(rq);
 			rq = NULL;
@@ -922,11 +924,12 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
 		struct request *rq;
 		struct bio *bio, *bidi_bio = NULL;
 		struct sg_io_v4 hdr;
+		u8 sense[SCSI_SENSE_BUFFERSIZE];
 
 		if (copy_from_user(&hdr, uarg, sizeof(hdr)))
 			return -EFAULT;
 
-		rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE);
+		rq = bsg_map_hdr(bd, &hdr, file->f_mode & FMODE_WRITE, sense);
 		if (IS_ERR(rq))
 			return PTR_ERR(rq);
 
diff --git a/block/genhd.c b/block/genhd.c
index 397960cf26a..e1eadcc9546 100644
--- a/block/genhd.c
+++ b/block/genhd.c
@@ -1087,6 +1087,14 @@ dev_t blk_lookup_devt(const char *name, int partno)
 		if (strcmp(dev_name(dev), name))
 			continue;
 
+		if (partno < disk->minors) {
+			/* We need to return the right devno, even
+			 * if the partition doesn't exist yet.
+			 */
+			devt = MKDEV(MAJOR(dev->devt),
+				     MINOR(dev->devt) + partno);
+			break;
+		}
 		part = disk_get_part(disk, partno);
 		if (part) {
 			devt = part_devt(part);