[SCSI] scsi_debug: support large non-fake virtual disk
authorFUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Sat, 29 Mar 2008 15:59:57 +0000 (00:59 +0900)
committerJames Bottomley <James.Bottomley@HansenPartnership.com>
Mon, 7 Apr 2008 17:19:07 +0000 (12:19 -0500)
Currently, the maximum amount of RAM that scsi_debug can allocate is
4GB. This patch increases it to 2TB; scsi_debug can allocates 2TB
memory and export it as if it were 2TB scsi disk.

Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp>
Acked-by: Douglas Gilbert <dougg@torque.net>
Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
drivers/scsi/scsi_debug.c

index c98559eceade9edc0166d5c503d7b51d67224b80..1b6a6d8e5d27ad3f9d11fc84c18f8f4e9ab81aac 100644 (file)
@@ -1949,7 +1949,7 @@ static void __init init_all_queued(void)
 }
 
 static void __init sdebug_build_parts(unsigned char *ramp,
-                                     unsigned int store_size)
+                                     unsigned long store_size)
 {
        struct partition * pp;
        int starts[SDEBUG_MAX_PARTS + 2];
@@ -2476,14 +2476,14 @@ static void do_remove_driverfs_files(void)
 
 static int __init scsi_debug_init(void)
 {
-       unsigned int sz;
+       unsigned long sz;
        int host_to_add;
        int k;
        int ret;
 
        if (scsi_debug_dev_size_mb < 1)
                scsi_debug_dev_size_mb = 1;  /* force minimum 1 MB ramdisk */
-       sz = (unsigned int)scsi_debug_dev_size_mb * 1048576;
+       sz = (unsigned long)scsi_debug_dev_size_mb * 1048576;
        sdebug_store_sectors = sz / SECT_SIZE;
        sdebug_capacity = get_sdebug_capacity();