X-Git-Url: http://ftp.safe.ca/?a=blobdiff_plain;f=drivers%2Fscsi%2Fscsi_lib.c;h=5f955707d902bc04fd4963317b3cc148e6b33617;hb=fecf97882a8f1e9b52627c30322232c18060aa2c;hp=2f12f9f12fcb269f5d55a11d9048b6d808bf5f12;hpb=0bd2af46839ad6262d25714a6ec0365db9d6b98f;p=safe%2Fjmp%2Flinux-2.6

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index 2f12f9f..5f95570 100644
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -36,7 +36,7 @@
 struct scsi_host_sg_pool {
 	size_t		size;
 	char		*name; 
-	kmem_cache_t	*slab;
+	struct kmem_cache	*slab;
 	mempool_t	*pool;
 };
 
@@ -241,7 +241,7 @@ struct scsi_io_context {
 	char sense[SCSI_SENSE_BUFFERSIZE];
 };
 
-static kmem_cache_t *scsi_io_context_cache;
+static struct kmem_cache *scsi_io_context_cache;
 
 static void scsi_end_async(struct request *req, int uptodate)
 {
@@ -265,13 +265,11 @@ static int scsi_merge_bio(struct request *rq, struct bio *bio)
 
 	if (!rq->bio)
 		blk_rq_bio_prep(q, rq, bio);
-	else if (!q->back_merge_fn(q, rq, bio))
+	else if (!ll_back_merge_fn(q, rq, bio))
 		return -EINVAL;
 	else {
 		rq->biotail->bi_next = bio;
 		rq->biotail = bio;
-		rq->hard_nr_sectors += bio_sectors(bio);
-		rq->nr_sectors = rq->hard_nr_sectors;
 	}
 
 	return 0;
@@ -390,10 +388,9 @@ int scsi_execute_async(struct scsi_device *sdev, const unsigned char *cmd,
 	int err = 0;
 	int write = (data_direction == DMA_TO_DEVICE);
 
-	sioc = kmem_cache_alloc(scsi_io_context_cache, gfp);
+	sioc = kmem_cache_zalloc(scsi_io_context_cache, gfp);
 	if (!sioc)
 		return DRIVER_ERROR << 24;
-	memset(sioc, 0, sizeof(*sioc));
 
 	req = blk_get_request(sdev->request_queue, write, gfp);
 	if (!req)
@@ -704,7 +701,7 @@ static struct scsi_cmnd *scsi_end_request(struct scsi_cmnd *cmd, int uptodate,
 	return NULL;
 }
 
-static struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask)
+struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_mask)
 {
 	struct scsi_host_sg_pool *sgp;
 	struct scatterlist *sgl;
@@ -745,7 +742,9 @@ static struct scatterlist *scsi_alloc_sgtable(struct scsi_cmnd *cmd, gfp_t gfp_m
 	return sgl;
 }
 
-static void scsi_free_sgtable(struct scatterlist *sgl, int index)
+EXPORT_SYMBOL(scsi_alloc_sgtable);
+
+void scsi_free_sgtable(struct scatterlist *sgl, int index)
 {
 	struct scsi_host_sg_pool *sgp;
 
@@ -755,6 +754,8 @@ static void scsi_free_sgtable(struct scatterlist *sgl, int index)
 	mempool_free(sgl, sgp->pool);
 }
 
+EXPORT_SYMBOL(scsi_free_sgtable);
+
 /*
  * Function:    scsi_release_buffers()
  *
@@ -967,9 +968,7 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes)
 	}
 	if (result) {
 		if (!(req->cmd_flags & REQ_QUIET)) {
-			scmd_printk(KERN_INFO, cmd,
-				    "SCSI error: return code = 0x%08x\n",
-				    result);
+			scsi_print_result(cmd);
 			if (driver_byte(result) & DRIVER_SENSE)
 				scsi_print_sense("", cmd);
 		}
@@ -1398,7 +1397,7 @@ static void scsi_softirq_done(struct request *rq)
 			scsi_finish_command(cmd);
 			break;
 		case NEEDS_RETRY:
-			scsi_retry_command(cmd);
+			scsi_queue_insert(cmd, SCSI_MLQUEUE_EH_RETRY);
 			break;
 		case ADD_TO_MLQUEUE:
 			scsi_queue_insert(cmd, SCSI_MLQUEUE_DEVICE_BUSY);
@@ -1567,29 +1566,40 @@ u64 scsi_calculate_bounce_limit(struct Scsi_Host *shost)
 }
 EXPORT_SYMBOL(scsi_calculate_bounce_limit);
 
-struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
+struct request_queue *__scsi_alloc_queue(struct Scsi_Host *shost,
+					 request_fn_proc *request_fn)
 {
-	struct Scsi_Host *shost = sdev->host;
 	struct request_queue *q;
 
-	q = blk_init_queue(scsi_request_fn, NULL);
+	q = blk_init_queue(request_fn, NULL);
 	if (!q)
 		return NULL;
 
-	blk_queue_prep_rq(q, scsi_prep_fn);
-
 	blk_queue_max_hw_segments(q, shost->sg_tablesize);
 	blk_queue_max_phys_segments(q, SCSI_MAX_PHYS_SEGMENTS);
 	blk_queue_max_sectors(q, shost->max_sectors);
 	blk_queue_bounce_limit(q, scsi_calculate_bounce_limit(shost));
 	blk_queue_segment_boundary(q, shost->dma_boundary);
-	blk_queue_issue_flush_fn(q, scsi_issue_flush_fn);
-	blk_queue_softirq_done(q, scsi_softirq_done);
 
 	if (!shost->use_clustering)
 		clear_bit(QUEUE_FLAG_CLUSTER, &q->queue_flags);
 	return q;
 }
+EXPORT_SYMBOL(__scsi_alloc_queue);
+
+struct request_queue *scsi_alloc_queue(struct scsi_device *sdev)
+{
+	struct request_queue *q;
+
+	q = __scsi_alloc_queue(sdev->host, scsi_request_fn);
+	if (!q)
+		return NULL;
+
+	blk_queue_prep_rq(q, scsi_prep_fn);
+	blk_queue_issue_flush_fn(q, scsi_issue_flush_fn);
+	blk_queue_softirq_done(q, scsi_softirq_done);
+	return q;
+}
 
 void scsi_free_queue(struct request_queue *q)
 {
@@ -2237,6 +2247,8 @@ void *scsi_kmap_atomic_sg(struct scatterlist *sg, int sg_count,
 	size_t sg_len = 0, len_complete = 0;
 	struct page *page;
 
+	WARN_ON(!irqs_disabled());
+
 	for (i = 0; i < sg_count; i++) {
 		len_complete = sg_len; /* Complete sg-entries */
 		sg_len += sg[i].length;