drbd: Update some outdated comments to match the code

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

4 files changed, 7 insertions, 8 deletions

diff --git a/drivers/block/drbd/drbd_bitmap.c b/drivers/block/drbd/drbd_bitmap.c
index 706e5220dd4a..092f8273e6bd 100644
--- a/drivers/block/drbd/drbd_bitmap.c
+++ b/drivers/block/drbd/drbd_bitmap.c
@@ -389,8 +389,8 @@ static struct page **bm_realloc_pages(struct drbd_bitmap *b, unsigned long want)
 
         /* Trying kmalloc first, falling back to vmalloc.
          * GFP_KERNEL is ok, as this is done when a lower level disk is
-         * "attached" to the drbd.  Context is receiver thread or cqueue
-         * thread.  As we have no disk yet, we are not in the IO path,
+         * "attached" to the drbd.  Context is receiver thread or drbdsetup /
+         * netlink process.  As we have no disk yet, we are not in the IO path,
          * not even the IO path of the peer. */
         bytes = sizeof(struct page *)*want;
         new_pages = kmalloc(bytes, GFP_KERNEL);
diff --git a/drivers/block/drbd/drbd_nl.c b/drivers/block/drbd/drbd_nl.c
index 92adb3dc82c2..684e2e4d48e1 100644
--- a/drivers/block/drbd/drbd_nl.c
+++ b/drivers/block/drbd/drbd_nl.c
@@ -2038,7 +2038,7 @@ int drbd_adm_connect(struct sk_buff *skb, struct genl_info *info)
                 goto fail;
         }
 
-        /* allocation not in the IO path, cqueue thread context */
+        /* allocation not in the IO path, drbdsetup / netlink process context */
         new_conf = kzalloc(sizeof(*new_conf), GFP_KERNEL);
         if (!new_conf) {
                 retcode = ERR_NOMEM;
diff --git a/drivers/block/drbd/drbd_req.c b/drivers/block/drbd/drbd_req.c
index 60fc186d0a3d..d61309db14a2 100644
--- a/drivers/block/drbd/drbd_req.c
+++ b/drivers/block/drbd/drbd_req.c
@@ -292,13 +292,12 @@ void _req_may_be_done(struct drbd_request *req, struct bio_and_error *m)
 
         if ((s & RQ_NET_MASK) == 0 || (s & RQ_NET_DONE)) {
                 /* this is disconnected (local only) operation,
-                 * or protocol C P_WRITE_ACK,
-                 * or protocol A or B P_BARRIER_ACK,
+                 * or protocol A, B, or C P_BARRIER_ACK,
                  * or killed from the transfer log due to connection loss. */
                 _req_is_done(mdev, req, rw);
         }
         /* else: network part and not DONE yet. that is
-         * protocol A or B, barrier ack still pending... */
+         * protocol A, B, or C, barrier ack still pending... */
 }
 
 static void _req_may_be_done_not_susp(struct drbd_request *req, struct bio_and_error *m)
@@ -668,7 +667,7 @@ int __req_mod(struct drbd_request *req, enum drbd_req_event what,
                         break;
 
                 if (req->rq_state & RQ_NET_PENDING) {
-                        /* barrier came in before all requests have been acked.
+                        /* barrier came in before all requests were acked.
                          * this is bad, because if the connection is lost now,
                          * we won't be able to clean them up... */
                         dev_err(DEV, "FIXME (BARRIER_ACKED but pending)\n");
diff --git a/drivers/block/drbd/drbd_worker.c b/drivers/block/drbd/drbd_worker.c
index c57e47c0a1f5..34a6065d95e6 100644
--- a/drivers/block/drbd/drbd_worker.c
+++ b/drivers/block/drbd/drbd_worker.c
@@ -969,7 +969,7 @@ int w_e_end_data_req(struct drbd_work *w, int cancel)
 }
 
 /**
- * w_e_end_rsdata_req() - Worker callback to send a P_RS_DATA_REPLY packet in response to a P_RS_DATA_REQUESTRS
+ * w_e_end_rsdata_req() - Worker callback to send a P_RS_DATA_REPLY packet in response to a P_RS_DATA_REQUEST
  * @mdev:       DRBD device.
  * @w:          work object.
  * @cancel:     The connection will be closed anyways