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[PATCH v8 08/34] qcow2: Add dummy has_subclusters() function
From: |
Alberto Garcia |
Subject: |
[PATCH v8 08/34] qcow2: Add dummy has_subclusters() function |
Date: |
Wed, 10 Jun 2020 17:02:46 +0200 |
This function will be used by the qcow2 code to check if an image has
subclusters or not.
At the moment this simply returns false. Once all patches needed for
subcluster support are ready then QEMU will be able to create and
read images with subclusters and this function will return the actual
value.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
block/qcow2.h | 6 ++++++
1 file changed, 6 insertions(+)
diff --git a/block/qcow2.h b/block/qcow2.h
index eecbadc4cb..2064dd3d85 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -510,6 +510,12 @@ typedef enum QCow2MetadataOverlap {
#define INV_OFFSET (-1ULL)
+static inline bool has_subclusters(BDRVQcow2State *s)
+{
+ /* FIXME: Return false until this feature is complete */
+ return false;
+}
+
static inline uint64_t get_l2_entry(BDRVQcow2State *s, uint64_t *l2_slice,
int idx)
{
--
2.20.1
- [PATCH v8 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), (continued)
- [PATCH v8 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2020/06/10
- [PATCH v8 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters(), Alberto Garcia, 2020/06/10
- [PATCH v8 06/34] qcow2: Add get_l2_entry() and set_l2_entry(), Alberto Garcia, 2020/06/10
- [PATCH v8 15/34] qcow2: Add qcow2_get_subcluster_range_type(), Alberto Garcia, 2020/06/10
- [PATCH v8 03/34] qcow2: Add calculate_l2_meta(), Alberto Garcia, 2020/06/10
- [PATCH v8 22/34] qcow2: Add subcluster support to zero_in_l2_slice(), Alberto Garcia, 2020/06/10
- [PATCH v8 01/34] qcow2: Make Qcow2AioTask store the full host offset, Alberto Garcia, 2020/06/10
- [PATCH v8 12/34] qcow2: Add l2_entry_size(), Alberto Garcia, 2020/06/10
- [PATCH v8 04/34] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2020/06/10
- [PATCH v8 16/34] qcow2: Add qcow2_cluster_is_allocated(), Alberto Garcia, 2020/06/10
- [PATCH v8 08/34] qcow2: Add dummy has_subclusters() function,
Alberto Garcia <=
- [PATCH v8 10/34] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2020/06/10
- [PATCH v8 19/34] qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC, Alberto Garcia, 2020/06/10
- [PATCH v8 07/34] qcow2: Document the Extended L2 Entries feature, Alberto Garcia, 2020/06/10
- [PATCH v8 02/34] qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset(), Alberto Garcia, 2020/06/10
- [PATCH v8 29/34] qcow2: Add subcluster support to qcow2_measure(), Alberto Garcia, 2020/06/10
- [PATCH v8 23/34] qcow2: Add subcluster support to discard_in_l2_slice(), Alberto Garcia, 2020/06/10
- [PATCH v8 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State, Alberto Garcia, 2020/06/10
- [PATCH v8 32/34] qcow2: Allow preallocation and backing files if extended_l2 is set, Alberto Garcia, 2020/06/10
- [PATCH v8 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Alberto Garcia, 2020/06/10