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[PULL 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters
From: |
Max Reitz |
Subject: |
[PULL 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters() |
Date: |
Tue, 25 Aug 2020 10:32:48 +0200 |
From: Alberto Garcia <berto@igalia.com>
Like offset_into_cluster() and size_to_clusters(), but for
subclusters.
Signed-off-by: Alberto Garcia <berto@igalia.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Max Reitz <mreitz@redhat.com>
Message-Id:
<3cc2390dcdef3d234d47c741b708bd8734490862.1594396418.git.berto@igalia.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
---
block/qcow2.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/block/qcow2.h b/block/qcow2.h
index 2503374677..4fe31adfd3 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -555,11 +555,21 @@ static inline int64_t offset_into_cluster(BDRVQcow2State
*s, int64_t offset)
return offset & (s->cluster_size - 1);
}
+static inline int64_t offset_into_subcluster(BDRVQcow2State *s, int64_t offset)
+{
+ return offset & (s->subcluster_size - 1);
+}
+
static inline uint64_t size_to_clusters(BDRVQcow2State *s, uint64_t size)
{
return (size + (s->cluster_size - 1)) >> s->cluster_bits;
}
+static inline uint64_t size_to_subclusters(BDRVQcow2State *s, uint64_t size)
+{
+ return (size + (s->subcluster_size - 1)) >> s->subcluster_bits;
+}
+
static inline int64_t size_to_l1(BDRVQcow2State *s, int64_t size)
{
int shift = s->cluster_bits + s->l2_bits;
--
2.26.2
- [PULL 00/34] Block patches, Max Reitz, 2020/08/25
- [PULL 01/34] qcow2: Make Qcow2AioTask store the full host offset, Max Reitz, 2020/08/25
- [PULL 02/34] qcow2: Convert qcow2_get_cluster_offset() into qcow2_get_host_offset(), Max Reitz, 2020/08/25
- [PULL 03/34] qcow2: Add calculate_l2_meta(), Max Reitz, 2020/08/25
- [PULL 04/34] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Max Reitz, 2020/08/25
- [PULL 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Max Reitz, 2020/08/25
- [PULL 06/34] qcow2: Add get_l2_entry() and set_l2_entry(), Max Reitz, 2020/08/25
- [PULL 07/34] qcow2: Document the Extended L2 Entries feature, Max Reitz, 2020/08/25
- [PULL 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State, Max Reitz, 2020/08/25
- [PULL 10/34] qcow2: Add offset_to_sc_index(), Max Reitz, 2020/08/25
- [PULL 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters(),
Max Reitz <=
- [PULL 12/34] qcow2: Add l2_entry_size(), Max Reitz, 2020/08/25
- [PULL 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Max Reitz, 2020/08/25
- [PULL 08/34] qcow2: Add dummy has_subclusters() function, Max Reitz, 2020/08/25
- [PULL 15/34] qcow2: Add qcow2_get_subcluster_range_type(), Max Reitz, 2020/08/25
- [PULL 14/34] qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type(), Max Reitz, 2020/08/25
- [PULL 16/34] qcow2: Add qcow2_cluster_is_allocated(), Max Reitz, 2020/08/25
- [PULL 18/34] qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*, Max Reitz, 2020/08/25
- [PULL 19/34] qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC, Max Reitz, 2020/08/25
- [PULL 22/34] qcow2: Add subcluster support to zero_in_l2_slice(), Max Reitz, 2020/08/25
- [PULL 21/34] qcow2: Add subcluster support to qcow2_get_host_offset(), Max Reitz, 2020/08/25