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[PATCH v6 11/32] qcow2: Add offset_into_subcluster() and size_to_subclus
From: |
Alberto Garcia |
Subject: |
[PATCH v6 11/32] qcow2: Add offset_into_subcluster() and size_to_subclusters() |
Date: |
Sun, 24 May 2020 16:51:31 +0200 |
Like offset_into_cluster() and size_to_clusters(), but for
subclusters.
Signed-off-by: Alberto Garcia <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
block/qcow2.h | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/block/qcow2.h b/block/qcow2.h
index ca73ac9b67..79c4f82383 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 v6 17/32] qcow2: Add cluster type parameter to qcow2_get_host_offset(), (continued)
- [PATCH v6 17/32] qcow2: Add cluster type parameter to qcow2_get_host_offset(), Alberto Garcia, 2020/05/24
- [PATCH v6 25/32] qcow2: Update L2 bitmap in qcow2_alloc_cluster_link_l2(), Alberto Garcia, 2020/05/24
- [PATCH v6 13/32] qcow2: Update get/set_l2_entry() and add get/set_l2_bitmap(), Alberto Garcia, 2020/05/24
- [PATCH v6 27/32] qcow2: Add subcluster support to handle_alloc_space(), Alberto Garcia, 2020/05/24
- [PATCH v6 24/32] qcow2: Add subcluster support to check_refcounts_l2(), Alberto Garcia, 2020/05/24
- [PATCH v6 07/32] qcow2: Document the Extended L2 Entries feature, Alberto Garcia, 2020/05/24
- [PATCH v6 04/32] qcow2: Split cluster_needs_cow() out of count_cow_clusters(), Alberto Garcia, 2020/05/24
- [PATCH v6 21/32] qcow2: Add subcluster support to qcow2_get_host_offset(), Alberto Garcia, 2020/05/24
- [PATCH v6 15/32] qcow2: Add qcow2_get_subcluster_range_type(), Alberto Garcia, 2020/05/24
- [PATCH v6 31/32] qcow2: Assert that expand_zero_clusters_in_l1() does not support subclusters, Alberto Garcia, 2020/05/24
- [PATCH v6 11/32] qcow2: Add offset_into_subcluster() and size_to_subclusters(),
Alberto Garcia <=
- [PATCH v6 08/32] qcow2: Add dummy has_subclusters() function, Alberto Garcia, 2020/05/24
- [PATCH v6 20/32] qcow2: Add subcluster support to calculate_l2_meta(), Alberto Garcia, 2020/05/24
- [PATCH v6 32/32] iotests: Add tests for qcow2 images with extended L2 entries, Alberto Garcia, 2020/05/24
- [PATCH v6 30/32] qcow2: Add the 'extended_l2' option and the QCOW2_INCOMPAT_EXTL2 bit, Alberto Garcia, 2020/05/24
- [PATCH v6 18/32] qcow2: Replace QCOW2_CLUSTER_* with QCOW2_SUBCLUSTER_*, Alberto Garcia, 2020/05/24
- Re: [PATCH v6 00/32] Add subcluster allocation to qcow2, no-reply, 2020/05/24
- Re: [PATCH v6 00/32] Add subcluster allocation to qcow2, no-reply, 2020/05/24
- Re: [PATCH v6 00/32] Add subcluster allocation to qcow2, no-reply, 2020/05/24
- Re: [PATCH v6 00/32] Add subcluster allocation to qcow2, no-reply, 2020/05/24