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>

1 files changed, 5 insertions, 7 deletions

diff --git a/drivers/target/target_core_user.c b/drivers/target/target_core_user.c
index 5de1eac17fed..47562509b489 100644
--- 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);