target/user: Fix comments to not refer to data ring

We no longer use a ringbuffer for the data area, so this might cause
confusion. Just call it the data area.

Signed-off-by: Andy Grover <agrover@redhat.com>
Reviewed-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Mike Christie <mchristi@redhat.com>
Signed-off-by: Nicholas Bellinger <nab@linux-iscsi.org>

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 5de1eac..4756250 100644 (file)
--- a/drivers/target/target_core_user.c
+++ b/drivers/target/target_core_user.c
@@ -96,7 +96,7 @@ struct tcmu_dev {
        size_t dev_size;
        u32 cmdr_size;
        u32 cmdr_last_cleaned;
-       /* Offset of data ring from start of mb */
+       /* Offset of data area from start of mb */
        /* Must add data_off and mb_addr to get the address */
        size_t data_off;
        size_t data_size;
@@ -349,7 +349,7 @@ static inline size_t spc_bitmap_free(unsigned long *bitmap)
 
 /*
  * We can't queue a command until we have space available on the cmd ring *and*
- * space available on the data ring.
+ * space available on the data area.
  *
  * Called with ring lock held.
  */
@@ -436,7 +436,7 @@ tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
        if ((command_size > (udev->cmdr_size / 2)) ||
            data_length > udev->data_size) {
                pr_warn("TCMU: Request of size %zu/%zu is too big for %u/%zu "
-                       "cmd/data ring buffers\n", command_size, data_length,
+                       "cmd ring/data area\n", command_size, data_length,
                        udev->cmdr_size, udev->data_size);
                spin_unlock_irq(&udev->cmdr_lock);
                return TCM_INVALID_CDB_FIELD;
@@ -491,9 +491,7 @@ tcmu_queue_cmd_ring(struct tcmu_cmd *tcmu_cmd)
 
        bitmap_copy(old_bitmap, udev->data_bitmap, DATA_BLOCK_BITS);
 
-       /*
-        * Fix up iovecs, and handle if allocation in data ring wrapped.
-        */
+       /* Handle allocating space from the data area */
        iov = &entry->req.iov[0];
        iov_cnt = 0;
        copy_to_data_area = (se_cmd->data_direction == DMA_TO_DEVICE
@@ -566,7 +564,7 @@ static void tcmu_handle_completion(struct tcmu_cmd *cmd, struct tcmu_cmd_entry *
        if (test_bit(TCMU_CMD_BIT_EXPIRED, &cmd->flags)) {
                /*
                 * cmd has been completed already from timeout, just reclaim
-                * data ring space and free cmd
+                * data area space and free cmd
                 */
                free_data_area(udev, cmd);