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authorStefan Hajnoczi <stefanha@redhat.com>2023-08-30 09:20:27 -0400
committerStefan Hajnoczi <stefanha@redhat.com>2023-08-30 09:20:27 -0400
commit156618d9ea67f2f2e31d9dedd97f2dcccbe6808c (patch)
tree1d3e651d8a978a22e7aca7f62fca5e179f6e3415 /block.c
parentee89152d4145ed017cc3cd820aa5e6d62bda9355 (diff)
parent87ec6f55af38e29be5b2b65a8acf84da73e06d06 (diff)
downloadfocaccia-qemu-156618d9ea67f2f2e31d9dedd97f2dcccbe6808c.tar.gz
focaccia-qemu-156618d9ea67f2f2e31d9dedd97f2dcccbe6808c.zip
Merge tag 'block-pull-request' of https://gitlab.com/stefanha/qemu into staging
Pull request

v3:
- Drop UFS emulation due to CI failures
- Add "aio-posix: zero out io_uring sqe user_data"

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# gpg: Signature made Wed 30 Aug 2023 07:48:17 EDT
# gpg:                using RSA key 8695A8BFD3F97CDAAC35775A9CA4ABB381AB73C8
# gpg: Good signature from "Stefan Hajnoczi <stefanha@redhat.com>" [ultimate]
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# Primary key fingerprint: 8695 A8BF D3F9 7CDA AC35  775A 9CA4 ABB3 81AB 73C8

* tag 'block-pull-request' of https://gitlab.com/stefanha/qemu:
  aio-posix: zero out io_uring sqe user_data
  tests/qemu-iotests/197: add testcase for CoR with subclusters
  block/io: align requests to subcluster_size
  block: add subcluster_size field to BlockDriverInfo
  block-migration: Ensure we don't crash during migration cleanup

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'block.c')
-rw-r--r--block.c7
1 files changed, 7 insertions, 0 deletions
diff --git a/block.c b/block.c
index a307c151a8..0af890f647 100644
--- a/block.c
+++ b/block.c
@@ -6480,6 +6480,13 @@ int coroutine_fn bdrv_co_get_info(BlockDriverState *bs, BlockDriverInfo *bdi)
     }
     memset(bdi, 0, sizeof(*bdi));
     ret = drv->bdrv_co_get_info(bs, bdi);
+    if (bdi->subcluster_size == 0) {
+        /*
+         * If the driver left this unset, subclusters are not supported.
+         * Then it is safe to treat each cluster as having only one subcluster.
+         */
+        bdi->subcluster_size = bdi->cluster_size;
+    }
     if (ret < 0) {
         return ret;
     }