Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus

[pandora-kernel.git] / arch / um / drivers / ubd_kern.c

diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c
index 2e09f16..25b248a 100644 (file)
--- a/arch/um/drivers/ubd_kern.c
+++ b/arch/um/drivers/ubd_kern.c
@@ -469,7 +469,7 @@ __uml_help(fakehd,
 "    Change the ubd device name to \"hd\".\n\n"
 );
 
-static void do_ubd_request(request_queue_t * q);
+static void do_ubd_request(struct request_queue * q);
 
 /* Only changed by ubd_init, which is an initcall. */
 int thread_fd = -1;
@@ -612,8 +612,10 @@ static int ubd_open_dev(struct ubd *ubd_dev)
        ubd_dev->fd = fd;
 
        if(ubd_dev->cow.file != NULL){
+               blk_queue_max_sectors(ubd_dev->queue, 8 * sizeof(long));
+
                err = -ENOMEM;
-               ubd_dev->cow.bitmap = (void *) vmalloc(ubd_dev->cow.bitmap_len);
+               ubd_dev->cow.bitmap = vmalloc(ubd_dev->cow.bitmap_len);
                if(ubd_dev->cow.bitmap == NULL){
                        printk(KERN_ERR "Failed to vmalloc COW bitmap\n");
                        goto error;
@@ -1079,11 +1081,11 @@ static void prepare_request(struct request *req, struct io_thread_req *io_req,
 }
 
 /* Called with dev->lock held */
-static void do_ubd_request(request_queue_t *q)
+static void do_ubd_request(struct request_queue *q)
 {
        struct io_thread_req *io_req;
        struct request *req;
-       int n;
+       int n, last_sectors;
 
        while(1){
                struct ubd *dev = q->queuedata;
@@ -1099,9 +1101,11 @@ static void do_ubd_request(request_queue_t *q)
                }
 
                req = dev->request;
+               last_sectors = 0;
                while(dev->start_sg < dev->end_sg){
                        struct scatterlist *sg = &dev->sg[dev->start_sg];
 
+                       req->sector += last_sectors;
                        io_req = kmalloc(sizeof(struct io_thread_req),
                                         GFP_ATOMIC);
                        if(io_req == NULL){
@@ -1113,6 +1117,7 @@ static void do_ubd_request(request_queue_t *q)
                                        (unsigned long long) req->sector << 9,
                                        sg->offset, sg->length, sg->page);
 
+                       last_sectors = sg->length >> 9;
                        n = os_write_file(thread_fd, &io_req,
                                          sizeof(struct io_thread_req *));
                        if(n != sizeof(struct io_thread_req *)){
@@ -1124,7 +1129,6 @@ static void do_ubd_request(request_queue_t *q)
                                return;
                        }
 
-                       req->sector += sg->length >> 9;
                        dev->start_sg++;
                }
                dev->end_sg = 0;