migration/postcopy: the valid condition is one less then end

[mirror_qemu.git] / block / parallels.c

diff --git a/block/parallels.c b/block/parallels.c
index fd215e202a50d18d07e3f16f67b26f98974a5405..00fae125d14b09690149b31fa405c9d7fb51c184 100644 (file)
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -220,22 +220,18 @@ static int64_t allocate_clusters(BlockDriverState *bs, int64_t sector_num,
     if (bs->backing) {
         int64_t nb_cow_sectors = to_allocate * s->tracks;
         int64_t nb_cow_bytes = nb_cow_sectors << BDRV_SECTOR_BITS;
-        QEMUIOVector qiov;
-        struct iovec iov = {
-            .iov_len = nb_cow_bytes,
-            .iov_base = qemu_blockalign(bs, nb_cow_bytes)
-        };
-        qemu_iovec_init_external(&qiov, &iov, 1);
-
-        ret = bdrv_co_readv(bs->backing, idx * s->tracks, nb_cow_sectors,
-                            &qiov);
+        void *buf = qemu_blockalign(bs, nb_cow_bytes);
+
+        ret = bdrv_co_pread(bs->backing, idx * s->tracks * BDRV_SECTOR_SIZE,
+                            nb_cow_bytes, buf, 0);
         if (ret < 0) {
-            qemu_vfree(iov.iov_base);
+            qemu_vfree(buf);
             return ret;
         }
 
-        ret = bdrv_co_writev(bs->file, s->data_end, nb_cow_sectors, &qiov);
-        qemu_vfree(iov.iov_base);
+        ret = bdrv_co_pwritev(bs->file, s->data_end * BDRV_SECTOR_SIZE,
+                              nb_cow_bytes, buf, 0);
+        qemu_vfree(buf);
         if (ret < 0) {
             return ret;
         }
@@ -340,7 +336,8 @@ static coroutine_fn int parallels_co_writev(BlockDriverState *bs,
         qemu_iovec_reset(&hd_qiov);
         qemu_iovec_concat(&hd_qiov, qiov, bytes_done, nbytes);
 
-        ret = bdrv_co_writev(bs->file, position, n, &hd_qiov);
+        ret = bdrv_co_pwritev(bs->file, position * BDRV_SECTOR_SIZE, nbytes,
+                              &hd_qiov, 0);
         if (ret < 0) {
             break;
         }
@@ -379,7 +376,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs,
 
         if (position < 0) {
             if (bs->backing) {
-                ret = bdrv_co_readv(bs->backing, sector_num, n, &hd_qiov);
+                ret = bdrv_co_preadv(bs->backing, sector_num * BDRV_SECTOR_SIZE,
+                                     nbytes, &hd_qiov, 0);
                 if (ret < 0) {
                     break;
                 }
@@ -387,7 +385,8 @@ static coroutine_fn int parallels_co_readv(BlockDriverState *bs,
                 qemu_iovec_memset(&hd_qiov, 0, 0, nbytes);
             }
         } else {
-            ret = bdrv_co_readv(bs->file, position, n, &hd_qiov);
+            ret = bdrv_co_preadv(bs->file, position * BDRV_SECTOR_SIZE, nbytes,
+                                 &hd_qiov, 0);
             if (ret < 0) {
                 break;
             }
@@ -555,7 +554,8 @@ static int coroutine_fn parallels_co_create(BlockdevCreateOptions* opts,
         return -EIO;
     }
 
-    blk = blk_new(BLK_PERM_WRITE | BLK_PERM_RESIZE, BLK_PERM_ALL);
+    blk = blk_new(bdrv_get_aio_context(bs),
+                  BLK_PERM_WRITE | BLK_PERM_RESIZE, BLK_PERM_ALL);
     ret = blk_insert_bs(blk, bs, errp);
     if (ret < 0) {
         goto out;