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[PATCH v3 2/8] block: Add no_fallback parameter to bdrv_co_truncate()


From: Kevin Wolf
Subject: [PATCH v3 2/8] block: Add no_fallback parameter to bdrv_co_truncate()
Date: Fri, 22 Nov 2019 17:05:05 +0100

This adds a no_fallback parameter to bdrv_co_truncate(), bdrv_truncate()
and blk_truncate() in preparation for a fix that potentially needs to
zero-write the new area. no_fallback will use BDRV_REQ_NO_FALLBACK for
this operation and lets the truncate fail if an efficient zero write
isn't possible.

Only qmp_block_resize() passes true for this parameter because it is a
blocking monitor command, so we don't want to add more potentially slow
I/O operations to it than we already have.

All other users will accept even a slow fallback to avoid failure.

Signed-off-by: Kevin Wolf <address@hidden>
---
 include/block/block.h          |  5 +++--
 include/sysemu/block-backend.h |  2 +-
 block/block-backend.c          |  4 ++--
 block/commit.c                 |  4 ++--
 block/crypto.c                 |  4 ++--
 block/io.c                     | 16 ++++++++++++----
 block/mirror.c                 |  2 +-
 block/parallels.c              |  6 +++---
 block/qcow.c                   |  4 ++--
 block/qcow2-refcount.c         |  2 +-
 block/qcow2.c                  | 19 +++++++++++--------
 block/qed.c                    |  2 +-
 block/raw-format.c             |  2 +-
 block/vdi.c                    |  2 +-
 block/vhdx-log.c               |  2 +-
 block/vhdx.c                   |  6 +++---
 block/vmdk.c                   | 10 ++++++----
 block/vpc.c                    |  2 +-
 blockdev.c                     |  2 +-
 qemu-img.c                     |  2 +-
 qemu-io-cmds.c                 |  2 +-
 tests/test-block-iothread.c    |  6 +++---
 22 files changed, 60 insertions(+), 46 deletions(-)

diff --git a/include/block/block.h b/include/block/block.h
index 1df9848e74..3e44677905 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -347,9 +347,10 @@ BlockDriverState *bdrv_find_backing_image(BlockDriverState 
*bs,
 void bdrv_refresh_filename(BlockDriverState *bs);
 
 int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
-                                  PreallocMode prealloc, Error **errp);
+                                  PreallocMode prealloc, bool no_fallback,
+                                  Error **errp);
 int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
-                  PreallocMode prealloc, Error **errp);
+                  PreallocMode prealloc, bool no_fallback, Error **errp);
 
 int64_t bdrv_nb_sectors(BlockDriverState *bs);
 int64_t bdrv_getlength(BlockDriverState *bs);
diff --git a/include/sysemu/block-backend.h b/include/sysemu/block-backend.h
index b198deca0b..487b29d13e 100644
--- a/include/sysemu/block-backend.h
+++ b/include/sysemu/block-backend.h
@@ -238,7 +238,7 @@ int coroutine_fn blk_co_pwrite_zeroes(BlockBackend *blk, 
int64_t offset,
 int blk_pwrite_compressed(BlockBackend *blk, int64_t offset, const void *buf,
                           int bytes);
 int blk_truncate(BlockBackend *blk, int64_t offset, bool exact,
-                 PreallocMode prealloc, Error **errp);
+                 PreallocMode prealloc, bool no_fallback, Error **errp);
 int blk_pdiscard(BlockBackend *blk, int64_t offset, int bytes);
 int blk_save_vmstate(BlockBackend *blk, const uint8_t *buf,
                      int64_t pos, int size);
diff --git a/block/block-backend.c b/block/block-backend.c
index 8b8f2a80a0..fcc9d60cdb 100644
--- a/block/block-backend.c
+++ b/block/block-backend.c
@@ -2073,14 +2073,14 @@ int blk_pwrite_compressed(BlockBackend *blk, int64_t 
offset, const void *buf,
 }
 
 int blk_truncate(BlockBackend *blk, int64_t offset, bool exact,
-                 PreallocMode prealloc, Error **errp)
+                 PreallocMode prealloc, bool no_fallback, Error **errp)
 {
     if (!blk_is_available(blk)) {
         error_setg(errp, "No medium inserted");
         return -ENOMEDIUM;
     }
 
-    return bdrv_truncate(blk->root, offset, exact, prealloc, errp);
+    return bdrv_truncate(blk->root, offset, exact, prealloc, no_fallback, 
errp);
 }
 
 static void blk_pdiscard_entry(void *opaque)
diff --git a/block/commit.c b/block/commit.c
index 23c90b3b91..f074181d83 100644
--- a/block/commit.c
+++ b/block/commit.c
@@ -155,7 +155,7 @@ static int coroutine_fn commit_run(Job *job, Error **errp)
     }
 
     if (base_len < len) {
-        ret = blk_truncate(s->base, len, false, PREALLOC_MODE_OFF, NULL);
+        ret = blk_truncate(s->base, len, false, PREALLOC_MODE_OFF, false, 
NULL);
         if (ret) {
             goto out;
         }
@@ -472,7 +472,7 @@ int bdrv_commit(BlockDriverState *bs)
      * we must return an error */
     if (length > backing_length) {
         ret = blk_truncate(backing, length, false, PREALLOC_MODE_OFF,
-                           &local_err);
+                           false, &local_err);
         if (ret < 0) {
             error_report_err(local_err);
             goto ro_cleanup;
diff --git a/block/crypto.c b/block/crypto.c
index 24823835c1..0f28e8b4e1 100644
--- a/block/crypto.c
+++ b/block/crypto.c
@@ -114,7 +114,7 @@ static ssize_t block_crypto_init_func(QCryptoBlock *block,
      * which will be used by the crypto header
      */
     return blk_truncate(data->blk, data->size + headerlen, false,
-                        data->prealloc, errp);
+                        data->prealloc, false, errp);
 }
 
 
@@ -311,7 +311,7 @@ block_crypto_co_truncate(BlockDriverState *bs, int64_t 
offset, bool exact,
 
     offset += payload_offset;
 
-    return bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+    return bdrv_co_truncate(bs->file, offset, exact, prealloc, false, errp);
 }
 
 static void block_crypto_close(BlockDriverState *bs)
diff --git a/block/io.c b/block/io.c
index 003f4ea38c..42e7558954 100644
--- a/block/io.c
+++ b/block/io.c
@@ -3313,9 +3313,15 @@ static void bdrv_parent_cb_resize(BlockDriverState *bs)
  * If 'exact' is true, the file must be resized to exactly the given
  * 'offset'.  Otherwise, it is sufficient for the node to be at least
  * 'offset' bytes in length.
+ *
+ * If 'no_fallback' is true, a possibly needed writte_zeroes operation to avoid
+ * making a longer backing file visible will use BDRV_REQ_NO_FALLBACK. If the
+ * zero write is necessary and this flag is set, bdrv_co_truncate() will fail
+ * if efficient zero writes cannot be provided.
  */
 int coroutine_fn bdrv_co_truncate(BdrvChild *child, int64_t offset, bool exact,
-                                  PreallocMode prealloc, Error **errp)
+                                  PreallocMode prealloc, bool no_fallback,
+                                  Error **errp)
 {
     BlockDriverState *bs = child->bs;
     BlockDriver *drv = bs->drv;
@@ -3372,7 +3378,8 @@ int coroutine_fn bdrv_co_truncate(BdrvChild *child, 
int64_t offset, bool exact,
     if (drv->bdrv_co_truncate) {
         ret = drv->bdrv_co_truncate(bs, offset, exact, prealloc, errp);
     } else if (bs->file && drv->is_filter) {
-        ret = bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+        ret = bdrv_co_truncate(bs->file, offset, exact, prealloc, no_fallback,
+                               errp);
     } else {
         error_setg(errp, "Image format driver does not support resize");
         ret = -ENOTSUP;
@@ -3405,6 +3412,7 @@ typedef struct TruncateCo {
     int64_t offset;
     bool exact;
     PreallocMode prealloc;
+    bool no_fallback;
     Error **errp;
     int ret;
 } TruncateCo;
@@ -3413,12 +3421,12 @@ static void coroutine_fn bdrv_truncate_co_entry(void 
*opaque)
 {
     TruncateCo *tco = opaque;
     tco->ret = bdrv_co_truncate(tco->child, tco->offset, tco->exact,
-                                tco->prealloc, tco->errp);
+                                tco->prealloc, tco->no_fallback, tco->errp);
     aio_wait_kick();
 }
 
 int bdrv_truncate(BdrvChild *child, int64_t offset, bool exact,
-                  PreallocMode prealloc, Error **errp)
+                  PreallocMode prealloc, bool no_fallback, Error **errp)
 {
     Coroutine *co;
     TruncateCo tco = {
diff --git a/block/mirror.c b/block/mirror.c
index f0f2d9dff1..a333533a38 100644
--- a/block/mirror.c
+++ b/block/mirror.c
@@ -879,7 +879,7 @@ static int coroutine_fn mirror_run(Job *job, Error **errp)
 
         if (s->bdev_length > base_length) {
             ret = blk_truncate(s->target, s->bdev_length, false,
-                               PREALLOC_MODE_OFF, NULL);
+                               PREALLOC_MODE_OFF, false, NULL);
             if (ret < 0) {
                 goto immediate_exit;
             }
diff --git a/block/parallels.c b/block/parallels.c
index 7a01997659..859f3f4904 100644
--- a/block/parallels.c
+++ b/block/parallels.c
@@ -203,7 +203,7 @@ static int64_t allocate_clusters(BlockDriverState *bs, 
int64_t sector_num,
         } else {
             ret = bdrv_truncate(bs->file,
                                 (s->data_end + space) << BDRV_SECTOR_BITS,
-                                false, PREALLOC_MODE_OFF, NULL);
+                                false, PREALLOC_MODE_OFF, false, NULL);
         }
         if (ret < 0) {
             return ret;
@@ -493,7 +493,7 @@ static int coroutine_fn parallels_co_check(BlockDriverState 
*bs,
              * That means we have to pass exact=true.
              */
             ret = bdrv_truncate(bs->file, res->image_end_offset, true,
-                                PREALLOC_MODE_OFF, &local_err);
+                                PREALLOC_MODE_OFF, false, &local_err);
             if (ret < 0) {
                 error_report_err(local_err);
                 res->check_errors++;
@@ -888,7 +888,7 @@ static void parallels_close(BlockDriverState *bs)
 
         /* errors are ignored, so we might as well pass exact=true */
         bdrv_truncate(bs->file, s->data_end << BDRV_SECTOR_BITS, true,
-                      PREALLOC_MODE_OFF, NULL);
+                      PREALLOC_MODE_OFF, false, NULL);
     }
 
     g_free(s->bat_dirty_bmap);
diff --git a/block/qcow.c b/block/qcow.c
index fce8989868..f43cb59cc0 100644
--- a/block/qcow.c
+++ b/block/qcow.c
@@ -480,7 +480,7 @@ static int get_cluster_offset(BlockDriverState *bs,
                     return -E2BIG;
                 }
                 ret = bdrv_truncate(bs->file, cluster_offset + s->cluster_size,
-                                    false, PREALLOC_MODE_OFF, NULL);
+                                    false, PREALLOC_MODE_OFF, false, NULL);
                 if (ret < 0) {
                     return ret;
                 }
@@ -1034,7 +1034,7 @@ static int qcow_make_empty(BlockDriverState *bs)
             l1_length) < 0)
         return -1;
     ret = bdrv_truncate(bs->file, s->l1_table_offset + l1_length, false,
-                        PREALLOC_MODE_OFF, NULL);
+                        PREALLOC_MODE_OFF, false, NULL);
     if (ret < 0)
         return ret;
 
diff --git a/block/qcow2-refcount.c b/block/qcow2-refcount.c
index f67ac6b2d8..fdfdec336d 100644
--- a/block/qcow2-refcount.c
+++ b/block/qcow2-refcount.c
@@ -2017,7 +2017,7 @@ static int check_refblocks(BlockDriverState *bs, 
BdrvCheckResult *res,
                 }
 
                 ret = bdrv_truncate(bs->file, offset + s->cluster_size, false,
-                                    PREALLOC_MODE_OFF, &local_err);
+                                    PREALLOC_MODE_OFF, false, &local_err);
                 if (ret < 0) {
                     error_report_err(local_err);
                     goto resize_fail;
diff --git a/block/qcow2.c b/block/qcow2.c
index 7c18721741..b201383c3d 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3075,7 +3075,7 @@ static int coroutine_fn preallocate_co(BlockDriverState 
*bs, uint64_t offset,
             mode = PREALLOC_MODE_OFF;
         }
         ret = bdrv_co_truncate(s->data_file, host_offset + cur_bytes, false,
-                               mode, errp);
+                               mode, false, errp);
         if (ret < 0) {
             return ret;
         }
@@ -3490,7 +3490,7 @@ qcow2_co_create(BlockdevCreateOptions *create_options, 
Error **errp)
 
     /* Okay, now that we have a valid image, let's give it the right size */
     ret = blk_truncate(blk, qcow2_opts->size, false, qcow2_opts->preallocation,
-                       errp);
+                       false, errp);
     if (ret < 0) {
         error_prepend(errp, "Could not resize image: ");
         goto out;
@@ -4035,7 +4035,7 @@ static int coroutine_fn 
qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
              * always fulfilled, so there is no need to pass it on.)
              */
             bdrv_co_truncate(bs->file, (last_cluster + 1) * s->cluster_size,
-                             false, PREALLOC_MODE_OFF, &local_err);
+                             false, PREALLOC_MODE_OFF, false, &local_err);
             if (local_err) {
                 warn_reportf_err(local_err,
                                  "Failed to truncate the tail of the image: ");
@@ -4057,7 +4057,8 @@ static int coroutine_fn 
qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
              * file should be resized to the exact target size, too,
              * so we pass @exact here.
              */
-            ret = bdrv_co_truncate(s->data_file, offset, exact, prealloc, 
errp);
+            ret = bdrv_co_truncate(s->data_file, offset, exact, prealloc, 
false,
+                                   errp);
             if (ret < 0) {
                 goto fail;
             }
@@ -4143,7 +4144,8 @@ static int coroutine_fn 
qcow2_co_truncate(BlockDriverState *bs, int64_t offset,
         new_file_size = allocation_start +
                         nb_new_data_clusters * s->cluster_size;
         /* Image file grows, so @exact does not matter */
-        ret = bdrv_co_truncate(bs->file, new_file_size, false, prealloc, errp);
+        ret = bdrv_co_truncate(bs->file, new_file_size, false, prealloc, false,
+                               errp);
         if (ret < 0) {
             error_prepend(errp, "Failed to resize underlying file: ");
             qcow2_free_clusters(bs, allocation_start,
@@ -4246,7 +4248,8 @@ qcow2_co_pwritev_compressed_part(BlockDriverState *bs,
         if (len < 0) {
             return len;
         }
-        return bdrv_co_truncate(bs->file, len, false, PREALLOC_MODE_OFF, NULL);
+        return bdrv_co_truncate(bs->file, len, false, PREALLOC_MODE_OFF, false,
+                                NULL);
     }
 
     if (offset_into_cluster(s, offset)) {
@@ -4484,7 +4487,7 @@ static int make_completely_empty(BlockDriverState *bs)
     }
 
     ret = bdrv_truncate(bs->file, (3 + l1_clusters) * s->cluster_size, false,
-                        PREALLOC_MODE_OFF, &local_err);
+                        PREALLOC_MODE_OFF, false, &local_err);
     if (ret < 0) {
         error_report_err(local_err);
         goto fail;
@@ -5327,7 +5330,7 @@ static int qcow2_amend_options(BlockDriverState *bs, 
QemuOpts *opts,
          * Amending image options should ensure that the image has
          * exactly the given new values, so pass exact=true here.
          */
-        ret = blk_truncate(blk, new_size, true, PREALLOC_MODE_OFF, errp);
+        ret = blk_truncate(blk, new_size, true, PREALLOC_MODE_OFF, false, 
errp);
         blk_unref(blk);
         if (ret < 0) {
             return ret;
diff --git a/block/qed.c b/block/qed.c
index d8c4e5fb1e..11e5cb37d9 100644
--- a/block/qed.c
+++ b/block/qed.c
@@ -677,7 +677,7 @@ static int coroutine_fn 
bdrv_qed_co_create(BlockdevCreateOptions *opts,
      * The QED format associates file length with allocation status,
      * so a new file (which is empty) must have a length of 0.
      */
-    ret = blk_truncate(blk, 0, true, PREALLOC_MODE_OFF, errp);
+    ret = blk_truncate(blk, 0, true, PREALLOC_MODE_OFF, false, errp);
     if (ret < 0) {
         goto out;
     }
diff --git a/block/raw-format.c b/block/raw-format.c
index 3a76ec7dd2..950334cdb4 100644
--- a/block/raw-format.c
+++ b/block/raw-format.c
@@ -387,7 +387,7 @@ static int coroutine_fn raw_co_truncate(BlockDriverState 
*bs, int64_t offset,
 
     s->size = offset;
     offset += s->offset;
-    return bdrv_co_truncate(bs->file, offset, exact, prealloc, errp);
+    return bdrv_co_truncate(bs->file, offset, exact, prealloc, false, errp);
 }
 
 static void raw_eject(BlockDriverState *bs, bool eject_flag)
diff --git a/block/vdi.c b/block/vdi.c
index 0142da7233..2deb600614 100644
--- a/block/vdi.c
+++ b/block/vdi.c
@@ -875,7 +875,7 @@ static int coroutine_fn 
vdi_co_do_create(BlockdevCreateOptions *create_options,
 
     if (image_type == VDI_TYPE_STATIC) {
         ret = blk_truncate(blk, offset + blocks * block_size, false,
-                           PREALLOC_MODE_OFF, errp);
+                           PREALLOC_MODE_OFF, false, errp);
         if (ret < 0) {
             error_prepend(errp, "Failed to statically allocate file");
             goto exit;
diff --git a/block/vhdx-log.c b/block/vhdx-log.c
index 13a49c2a33..4cd32a1231 100644
--- a/block/vhdx-log.c
+++ b/block/vhdx-log.c
@@ -558,7 +558,7 @@ static int vhdx_log_flush(BlockDriverState *bs, 
BDRVVHDXState *s,
                     goto exit;
                 }
                 ret = bdrv_truncate(bs->file, new_file_size, false,
-                                    PREALLOC_MODE_OFF, NULL);
+                                    PREALLOC_MODE_OFF, false, NULL);
                 if (ret < 0) {
                     goto exit;
                 }
diff --git a/block/vhdx.c b/block/vhdx.c
index f02d2611be..a58b2e2768 100644
--- a/block/vhdx.c
+++ b/block/vhdx.c
@@ -1264,7 +1264,7 @@ static int vhdx_allocate_block(BlockDriverState *bs, 
BDRVVHDXState *s,
     }
 
     return bdrv_truncate(bs->file, *new_offset + s->block_size, false,
-                         PREALLOC_MODE_OFF, NULL);
+                         PREALLOC_MODE_OFF, false, NULL);
 }
 
 /*
@@ -1703,13 +1703,13 @@ static int vhdx_create_bat(BlockBackend *blk, 
BDRVVHDXState *s,
         /* All zeroes, so we can just extend the file - the end of the BAT
          * is the furthest thing we have written yet */
         ret = blk_truncate(blk, data_file_offset, false, PREALLOC_MODE_OFF,
-                           errp);
+                           false, errp);
         if (ret < 0) {
             goto exit;
         }
     } else if (type == VHDX_TYPE_FIXED) {
         ret = blk_truncate(blk, data_file_offset + image_size, false,
-                           PREALLOC_MODE_OFF, errp);
+                           PREALLOC_MODE_OFF, false, errp);
         if (ret < 0) {
             goto exit;
         }
diff --git a/block/vmdk.c b/block/vmdk.c
index 20e909d997..1fbfed45ce 100644
--- a/block/vmdk.c
+++ b/block/vmdk.c
@@ -2077,7 +2077,7 @@ vmdk_co_pwritev_compressed(BlockDriverState *bs, uint64_t 
offset,
             }
             length = QEMU_ALIGN_UP(length, BDRV_SECTOR_SIZE);
             ret = bdrv_truncate(s->extents[i].file, length, false,
-                                PREALLOC_MODE_OFF, NULL);
+                                PREALLOC_MODE_OFF, false, NULL);
             if (ret < 0) {
                 return ret;
             }
@@ -2118,7 +2118,8 @@ static int vmdk_init_extent(BlockBackend *blk,
     int gd_buf_size;
 
     if (flat) {
-        ret = blk_truncate(blk, filesize, false, PREALLOC_MODE_OFF, errp);
+        ret = blk_truncate(blk, filesize, false, PREALLOC_MODE_OFF, false,
+                           errp);
         goto exit;
     }
     magic = cpu_to_be32(VMDK4_MAGIC);
@@ -2182,7 +2183,7 @@ static int vmdk_init_extent(BlockBackend *blk,
     }
 
     ret = blk_truncate(blk, le64_to_cpu(header.grain_offset) << 9, false,
-                       PREALLOC_MODE_OFF, errp);
+                       PREALLOC_MODE_OFF, false, errp);
     if (ret < 0) {
         goto exit;
     }
@@ -2523,7 +2524,8 @@ static int coroutine_fn vmdk_co_do_create(int64_t size,
     /* bdrv_pwrite write padding zeros to align to sector, we don't need that
      * for description file */
     if (desc_offset == 0) {
-        ret = blk_truncate(blk, desc_len, false, PREALLOC_MODE_OFF, errp);
+        ret = blk_truncate(blk, desc_len, false, PREALLOC_MODE_OFF, false,
+                           errp);
         if (ret < 0) {
             goto exit;
         }
diff --git a/block/vpc.c b/block/vpc.c
index a65550298e..9202a517e1 100644
--- a/block/vpc.c
+++ b/block/vpc.c
@@ -898,7 +898,7 @@ static int create_fixed_disk(BlockBackend *blk, uint8_t 
*buf,
     /* Add footer to total size */
     total_size += HEADER_SIZE;
 
-    ret = blk_truncate(blk, total_size, false, PREALLOC_MODE_OFF, errp);
+    ret = blk_truncate(blk, total_size, false, PREALLOC_MODE_OFF, false, errp);
     if (ret < 0) {
         return ret;
     }
diff --git a/blockdev.c b/blockdev.c
index 8e029e9c01..d7d3c250f6 100644
--- a/blockdev.c
+++ b/blockdev.c
@@ -3204,7 +3204,7 @@ void qmp_block_resize(bool has_device, const char *device,
     }
 
     bdrv_drained_begin(bs);
-    ret = blk_truncate(blk, size, false, PREALLOC_MODE_OFF, errp);
+    ret = blk_truncate(blk, size, false, PREALLOC_MODE_OFF, true, errp);
     bdrv_drained_end(bs);
 
 out:
diff --git a/qemu-img.c b/qemu-img.c
index 95a24b9762..7ee450bc18 100644
--- a/qemu-img.c
+++ b/qemu-img.c
@@ -3836,7 +3836,7 @@ static int img_resize(int argc, char **argv)
      * resizing, so pass @exact=true.  It is of no use to report
      * success when the image has not actually been resized.
      */
-    ret = blk_truncate(blk, total_size, true, prealloc, &err);
+    ret = blk_truncate(blk, total_size, true, prealloc, false, &err);
     if (!ret) {
         qprintf(quiet, "Image resized.\n");
     } else {
diff --git a/qemu-io-cmds.c b/qemu-io-cmds.c
index 1b7e700020..08cce9d4cf 100644
--- a/qemu-io-cmds.c
+++ b/qemu-io-cmds.c
@@ -1715,7 +1715,7 @@ static int truncate_f(BlockBackend *blk, int argc, char 
**argv)
      * exact=true.  It is better to err on the "emit more errors" side
      * than to be overly permissive.
      */
-    ret = blk_truncate(blk, offset, true, PREALLOC_MODE_OFF, &local_err);
+    ret = blk_truncate(blk, offset, true, PREALLOC_MODE_OFF, false, 
&local_err);
     if (ret < 0) {
         error_report_err(local_err);
         return ret;
diff --git a/tests/test-block-iothread.c b/tests/test-block-iothread.c
index 0c861809f0..339dc2c9bd 100644
--- a/tests/test-block-iothread.c
+++ b/tests/test-block-iothread.c
@@ -185,18 +185,18 @@ static void test_sync_op_truncate(BdrvChild *c)
     int ret;
 
     /* Normal success path */
-    ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, NULL);
+    ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, false, NULL);
     g_assert_cmpint(ret, ==, 0);
 
     /* Early error: Negative offset */
-    ret = bdrv_truncate(c, -2, false, PREALLOC_MODE_OFF, NULL);
+    ret = bdrv_truncate(c, -2, false, PREALLOC_MODE_OFF, false, NULL);
     g_assert_cmpint(ret, ==, -EINVAL);
 
     /* Error: Read-only image */
     c->bs->read_only = true;
     c->bs->open_flags &= ~BDRV_O_RDWR;
 
-    ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, NULL);
+    ret = bdrv_truncate(c, 65536, false, PREALLOC_MODE_OFF, false, NULL);
     g_assert_cmpint(ret, ==, -EACCES);
 
     c->bs->read_only = false;
-- 
2.20.1




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