Merge branch 'audit.b21' of git://git.kernel.org/pub/scm/linux/kernel/git/viro/audit...

[linux-2.6] / drivers / scsi / scsi_lib.c

diff --git a/drivers/scsi/scsi_lib.c b/drivers/scsi/scsi_lib.c
index ede158d08d9df06830b92b6047b0a9453a71611c..faee4757c03adb712363eb09527c5af357c0bef3 100644 (file)
--- a/drivers/scsi/scsi_lib.c
+++ b/drivers/scsi/scsi_lib.c
@@ -367,7 +367,7 @@ static int scsi_req_map_sg(struct request *rq, struct scatterlist *sgl,
                           int nsegs, unsigned bufflen, gfp_t gfp)
 {
        struct request_queue *q = rq->q;
-       int nr_pages = (bufflen + PAGE_SIZE - 1) >> PAGE_SHIFT;
+       int nr_pages = (bufflen + sgl[0].offset + PAGE_SIZE - 1) >> PAGE_SHIFT;
        unsigned int data_len = 0, len, bytes, off;
        struct page *page;
        struct bio *bio = NULL;
@@ -1067,16 +1067,29 @@ void scsi_io_completion(struct scsi_cmnd *cmd, unsigned int good_bytes,
                        break;
                case NOT_READY:
                        /*
-                        * If the device is in the process of becoming ready,
-                        * retry.
+                        * If the device is in the process of becoming
+                        * ready, or has a temporary blockage, retry.
                         */
-                       if (sshdr.asc == 0x04 && sshdr.ascq == 0x01) {
-                               scsi_requeue_command(q, cmd);
-                               return;
+                       if (sshdr.asc == 0x04) {
+                               switch (sshdr.ascq) {
+                               case 0x01: /* becoming ready */
+                               case 0x04: /* format in progress */
+                               case 0x05: /* rebuild in progress */
+                               case 0x06: /* recalculation in progress */
+                               case 0x07: /* operation in progress */
+                               case 0x08: /* Long write in progress */
+                               case 0x09: /* self test in progress */
+                                       scsi_requeue_command(q, cmd);
+                                       return;
+                               default:
+                                       break;
+                               }
                        }
-                       if (!(req->flags & REQ_QUIET))
+                       if (!(req->flags & REQ_QUIET)) {
                                scmd_printk(KERN_INFO, cmd,
-                                          "Device not ready.\n");
+                                          "Device not ready: ");
+                               scsi_print_sense_hdr("", &sshdr);
+                       }
                        scsi_end_request(cmd, 0, this_count, 1);
                        return;
                case VOLUME_OVERFLOW:
@@ -1479,6 +1492,8 @@ static inline int scsi_host_queue_ready(struct request_queue *q,
 static void scsi_kill_request(struct request *req, request_queue_t *q)
 {
        struct scsi_cmnd *cmd = req->special;
+       struct scsi_device *sdev = cmd->device;
+       struct Scsi_Host *shost = sdev->host;
 
        blkdev_dequeue_request(req);
 
@@ -1491,6 +1506,19 @@ static void scsi_kill_request(struct request *req, request_queue_t *q)
        scsi_init_cmd_errh(cmd);
        cmd->result = DID_NO_CONNECT << 16;
        atomic_inc(&cmd->device->iorequest_cnt);
+
+       /*
+        * SCSI request completion path will do scsi_device_unbusy(),
+        * bump busy counts.  To bump the counters, we need to dance
+        * with the locks as normal issue path does.
+        */
+       sdev->device_busy++;
+       spin_unlock(sdev->request_queue->queue_lock);
+       spin_lock(shost->host_lock);
+       shost->host_busy++;
+       spin_unlock(shost->host_lock);
+       spin_lock(sdev->request_queue->queue_lock);
+
        __scsi_done(cmd);
 }
 
@@ -1787,9 +1815,8 @@ int __init scsi_init_queue(void)
                                        sgp->name);
                }
 
-               sgp->pool = mempool_create(SG_MEMPOOL_SIZE,
-                               mempool_alloc_slab, mempool_free_slab,
-                               sgp->slab);
+               sgp->pool = mempool_create_slab_pool(SG_MEMPOOL_SIZE,
+                                                    sgp->slab);
                if (!sgp->pool) {
                        printk(KERN_ERR "SCSI: can't init sg mempool %s\n",
                                        sgp->name);