drbd: Update some comments

Signed-off-by: Philipp Reisner <philipp.reisner@linbit.com>
Signed-off-by: Lars Ellenberg <lars.ellenberg@linbit.com>

drivers/block/drbd/drbd_int.h

@@ -727,7 +727,7 @@ enum {
 	 * we need to resubmit without the barrier flag. */
 	__EE_RESUBMITTED,
 
-	/* we may have several bios per epoch entry.
+	/* we may have several bios per peer request.
 	 * if any of those fail, we set this flag atomically
 	 * from the endio callback */
 	__EE_WAS_ERROR,
@@ -1422,7 +1422,7 @@ extern void drbd_bm_unlock(struct drbd_conf *mdev);
 /* drbd_main.c */
 
 extern struct kmem_cache *drbd_request_cache;
-extern struct kmem_cache *drbd_ee_cache;	/* epoch entries */
+extern struct kmem_cache *drbd_ee_cache;	/* peer requests */
 extern struct kmem_cache *drbd_bm_ext_cache;	/* bitmap extents */
 extern struct kmem_cache *drbd_al_ext_cache;	/* activity log extents */
 extern mempool_t *drbd_request_mempool;

drivers/block/drbd/drbd_main.c

@@ -135,7 +135,7 @@ struct drbd_conf **minor_table;
 struct list_head drbd_tconns;  /* list of struct drbd_tconn */
 
 struct kmem_cache *drbd_request_cache;
-struct kmem_cache *drbd_ee_cache;	/* epoch entries */
+struct kmem_cache *drbd_ee_cache;	/* peer requests */
 struct kmem_cache *drbd_bm_ext_cache;	/* bitmap extents */
 struct kmem_cache *drbd_al_ext_cache;	/* activity log extents */
 mempool_t *drbd_request_mempool;

drivers/block/drbd/drbd_receiver.c

@@ -1085,7 +1085,7 @@ void drbd_bump_write_ordering(struct drbd_conf *mdev, enum write_ordering_e wo)
 /**
  * drbd_submit_ee()
  * @mdev:	DRBD device.
- * @e:		epoch entry
+ * @e:		peer request
  * @rw:		flag field, see bio->bi_rw
  *
  * May spread the pages to multiple bios,
@@ -1182,7 +1182,7 @@ static void drbd_remove_epoch_entry_interval(struct drbd_conf *mdev,
 	drbd_remove_interval(&mdev->write_requests, i);
 	drbd_clear_interval(i);
 
-	/* Wake up any processes waiting for this epoch entry to complete.  */
+	/* Wake up any processes waiting for this peer request to complete.  */
 	if (i->waiting)
 		wake_up(&mdev->misc_wait);
 }