scsi: target: tcmu: Switch to bitmap_zalloc()

Switch to bitmap_zalloc() to show clearly what we are allocating.  Besides
that it returns pointer of bitmap type instead of opaque void *.

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Acked-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 396c2fa..4eeeaaf 100644 (file)
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -1633,7 +1633,7 @@ static void tcmu_dev_kref_release(struct kref *kref)
        WARN_ON(!all_expired);
 
        tcmu_blocks_release(&udev->data_blocks, 0, udev->dbi_max + 1);
-       kfree(udev->data_bitmap);
+       bitmap_free(udev->data_bitmap);
        mutex_unlock(&udev->cmdr_lock);
 
        call_rcu(&dev->rcu_head, tcmu_dev_call_rcu);
@@ -1841,9 +1841,7 @@ static int tcmu_configure_device(struct se_device *dev)
        info = &udev->uio_info;
 
        mutex_lock(&udev->cmdr_lock);
-       udev->data_bitmap = kcalloc(BITS_TO_LONGS(udev->max_blocks),
-                                   sizeof(unsigned long),
-                                   GFP_KERNEL);
+       udev->data_bitmap = bitmap_zalloc(udev->max_blocks, GFP_KERNEL);
        mutex_unlock(&udev->cmdr_lock);
        if (!udev->data_bitmap) {
                ret = -ENOMEM;
@@ -1930,7 +1928,7 @@ err_register:
        vfree(udev->mb_addr);
        udev->mb_addr = NULL;
 err_vzalloc:
-       kfree(udev->data_bitmap);
+       bitmap_free(udev->data_bitmap);
        udev->data_bitmap = NULL;
 err_bitmap_alloc:
        kfree(info->name);