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[PATCH v11 11/34] qcow2: Add offset_into_subcluster() and size_to_subclu
From: |
Alberto Garcia |
Subject: |
[PATCH v11 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters() |
Date: |
Fri, 10 Jul 2020 18:12:53 +0200 |
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>
---
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;
--
2.20.1
- [PATCH v11 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), (continued)
- [PATCH v11 05/34] qcow2: Process QCOW2_CLUSTER_ZERO_ALLOC clusters in handle_copied(), Alberto Garcia, 2020/07/10
- [PATCH v11 06/34] qcow2: Add get_l2_entry() and set_l2_entry(), Alberto Garcia, 2020/07/10
- [PATCH v11 07/34] qcow2: Document the Extended L2 Entries feature, Alberto Garcia, 2020/07/10
- [PATCH v11 13/34] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2020/07/10
- [PATCH v11 04/34] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2020/07/10
- [PATCH v11 15/34] qcow2: Add qcow2_get_subcluster_range_type(), Alberto Garcia, 2020/07/10
- [PATCH v11 19/34] qcow2: Handle QCOW2_SUBCLUSTER_UNALLOCATED_ALLOC, Alberto Garcia, 2020/07/10
- [PATCH v11 20/34] qcow2: Add subcluster support to calculate_l2_meta(), Alberto Garcia, 2020/07/10
- [PATCH v11 18/34] qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*, Alberto Garcia, 2020/07/10
- [PATCH v11 09/34] qcow2: Add subcluster-related fields to BDRVQcow2State, Alberto Garcia, 2020/07/10
- [PATCH v11 11/34] qcow2: Add offset_into_subcluster() and size_to_subclusters(),
Alberto Garcia <=
- [PATCH v11 10/34] qcow2: Add offset_to_sc_index(), Alberto Garcia, 2020/07/10
- [PATCH v11 14/34] qcow2: Add QCow2SubclusterType and qcow2_get_subcluster_type(), Alberto Garcia, 2020/07/10
- [PATCH v11 32/34] qcow2: Allow preallocation and backing files if extended_l2 is set, Alberto Garcia, 2020/07/10
- [PATCH v11 22/34] qcow2: Add subcluster support to zero_in_l2_slice(), Alberto Garcia, 2020/07/10
- [PATCH v11 24/34] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2020/07/10
- [PATCH v11 25/34] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), Alberto Garcia, 2020/07/10
- [PATCH v11 17/34] qcow2: Add cluster type parameter to qcow2_get_host_offset(), Alberto Garcia, 2020/07/10
- [PATCH v11 12/34] qcow2: Add l2_entry_size(), Alberto Garcia, 2020/07/10
- [PATCH v11 26/34] qcow2: Clear the L2 bitmap when allocating a compressed cluster, Alberto Garcia, 2020/07/10
- [PATCH v11 28/34] qcow2: Add subcluster support to qcow2_co_pwrite_zeroes(), Alberto Garcia, 2020/07/10