qed: Add return value to qed_aio_write_l1_update()

Don't recurse into qed_aio_next_io() and qed_aio_complete() here, but
just return an error code and let the caller handle it.

Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>

diff --git a/block/qed.c b/block/qed.c
index 5462faa84ae49bb185c96e417bd07a1ec3ac0bb7..e43827f0ec26d07200dbb000babcd957f528f692 100644 (file)
--- a/block/qed.c
+++ b/block/qed.c
@@ -958,18 +958,12 @@ static void qed_aio_complete(QEDAIOCB *acb, int ret)
 /**
  * Update L1 table with new L2 table offset and write it out
  */
-static void qed_aio_write_l1_update(void *opaque, int ret)
+static int qed_aio_write_l1_update(QEDAIOCB *acb)
 {
-    QEDAIOCB *acb = opaque;
     BDRVQEDState *s = acb_to_s(acb);
     CachedL2Table *l2_table = acb->request.l2_table;
     uint64_t l2_offset = l2_table->offset;
-    int index;
-
-    if (ret) {
-        qed_aio_complete(acb, ret);
-        return;
-    }
+    int index, ret;
 
     index = qed_l1_index(s, acb->cur_pos);
     s->l1_table->offsets[index] = l2_table->offset;
@@ -985,7 +979,7 @@ static void qed_aio_write_l1_update(void *opaque, int ret)
     acb->request.l2_table = qed_find_l2_cache_entry(&s->l2_cache, l2_offset);
     assert(acb->request.l2_table != NULL);
 
-    qed_aio_next_io(acb, ret);
+    return ret;
 }
 
 
@@ -1014,7 +1008,12 @@ static void qed_aio_write_l2_update(QEDAIOCB *acb, int ret, uint64_t offset)
     if (need_alloc) {
         /* Write out the whole new L2 table */
         ret = qed_write_l2_table(s, &acb->request, 0, s->table_nelems, true);
-        qed_aio_write_l1_update(acb, ret);
+        if (ret) {
+            goto err;
+        }
+        ret = qed_aio_write_l1_update(acb);
+        qed_aio_next_io(acb, ret);
+
     } else {
         /* Write out only the updated part of the L2 table */
         ret = qed_write_l2_table(s, &acb->request, index, acb->cur_nclusters,