block: add sysfs file for controlling io stats accounting

[safe/jmp/linux-2.6] / block / bsg.c

diff --git a/block/bsg.c b/block/bsg.c
index 56cb343..d414bb5 100644 (file)
--- a/block/bsg.c
+++ b/block/bsg.c
@@ -42,7 +42,7 @@ struct bsg_device {
        int done_cmds;
        wait_queue_head_t wq_done;
        wait_queue_head_t wq_free;
-       char name[BUS_ID_SIZE];
+       char name[20];
        int max_queue;
        unsigned long flags;
 };
@@ -173,7 +173,7 @@ unlock:
 
 static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
                                struct sg_io_v4 *hdr, struct bsg_device *bd,
-                               int has_write_perm)
+                               fmode_t has_write_perm)
 {
        if (hdr->request_len > BLK_MAX_CDB) {
                rq->cmd = kzalloc(hdr->request_len, GFP_KERNEL);
@@ -202,6 +202,8 @@ static int blk_fill_sgv4_hdr_rq(struct request_queue *q, struct request *rq,
                rq->timeout = q->sg_timeout;
        if (!rq->timeout)
                rq->timeout = BLK_DEFAULT_SG_TIMEOUT;
+       if (rq->timeout < BLK_MIN_SG_TIMEOUT)
+               rq->timeout = BLK_MIN_SG_TIMEOUT;
 
        return 0;
 }
@@ -242,7 +244,7 @@ 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, int has_write_perm)
+bsg_map_hdr(struct bsg_device *bd, struct sg_io_v4 *hdr, fmode_t has_write_perm)
 {
        struct request_queue *q = bd->queue;
        struct request *rq, *next_rq = NULL;
@@ -601,7 +603,8 @@ bsg_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
 }
 
 static int __bsg_write(struct bsg_device *bd, const char __user *buf,
-                      size_t count, ssize_t *bytes_written, int has_write_perm)
+                      size_t count, ssize_t *bytes_written,
+                      fmode_t has_write_perm)
 {
        struct bsg_command *bc;
        struct request *rq;
@@ -778,7 +781,7 @@ static struct bsg_device *bsg_add_device(struct inode *inode,
        mutex_lock(&bsg_mutex);
        hlist_add_head(&bd->dev_list, bsg_dev_idx_hash(iminor(inode)));
 
-       strncpy(bd->name, rq->bsg_dev.class_dev->bus_id, sizeof(bd->name) - 1);
+       strncpy(bd->name, dev_name(rq->bsg_dev.class_dev), sizeof(bd->name) - 1);
        dprintk("bound to <%s>, max queue %d\n",
                format_dev_t(buf, inode->i_rdev), bd->max_queue);
 
@@ -913,7 +916,7 @@ static long bsg_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
        case SG_EMULATED_HOST:
        case SCSI_IOCTL_SEND_COMMAND: {
                void __user *uarg = (void __user *) arg;
-               return scsi_cmd_ioctl(file, bd->queue, NULL, cmd, uarg);
+               return scsi_cmd_ioctl(bd->queue, NULL, file->f_mode, cmd, uarg);
        }
        case SG_IO: {
                struct request *rq;
@@ -989,7 +992,7 @@ int bsg_register_queue(struct request_queue *q, struct device *parent,
        if (name)
                devname = name;
        else
-               devname = parent->bus_id;
+               devname = dev_name(parent);
 
        /*
         * we need a proper transport to send commands, not a stacked device
@@ -1024,8 +1027,7 @@ int bsg_register_queue(struct request_queue *q, struct device *parent,
        bcd->release = release;
        kref_init(&bcd->ref);
        dev = MKDEV(bsg_major, bcd->minor);
-       class_dev = device_create_drvdata(bsg_class, parent, dev, NULL,
-                                         "%s", devname);
+       class_dev = device_create(bsg_class, parent, dev, NULL, "%s", devname);
        if (IS_ERR(class_dev)) {
                ret = PTR_ERR(class_dev);
                goto put_dev;