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[Qemu-devel] [PATCH v3 14/39] qcow2: Add offset_to_l2_slice_index()
From: |
Alberto Garcia |
Subject: |
[Qemu-devel] [PATCH v3 14/39] qcow2: Add offset_to_l2_slice_index() |
Date: |
Fri, 26 Jan 2018 16:59:41 +0200 |
Similar to offset_to_l2_index(), this function takes a guest offset
and returns the index in the L2 slice that contains its L2 entry.
An L2 slice has currently the same size as an L2 table (one cluster),
so both functions return the same value for now.
Signed-off-by: Alberto Garcia <address@hidden>
Reviewed-by: Eric Blake <address@hidden>
---
block/qcow2.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/block/qcow2.h b/block/qcow2.h
index e0aee88811..87b5c4063e 100644
--- a/block/qcow2.h
+++ b/block/qcow2.h
@@ -474,6 +474,11 @@ static inline int offset_to_l2_index(BDRVQcow2State *s,
int64_t offset)
return (offset >> s->cluster_bits) & (s->l2_size - 1);
}
+static inline int offset_to_l2_slice_index(BDRVQcow2State *s, int64_t offset)
+{
+ return (offset >> s->cluster_bits) & (s->l2_slice_size - 1);
+}
+
static inline int64_t align_offset(int64_t offset, int n)
{
offset = (offset + n - 1) & ~(n - 1);
--
2.11.0
- [Qemu-devel] [PATCH v3 36/39] qcow2: Allow configuring the L2 slice size, (continued)
- [Qemu-devel] [PATCH v3 36/39] qcow2: Allow configuring the L2 slice size, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 30/39] qcow2: Update expand_zero_clusters_in_l1() to support L2 slices, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 24/39] qcow2: Update discard_single_l2() to support L2 slices, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 22/39] qcow2: Update handle_copied() to support L2 slices, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 21/39] qcow2: Update qcow2_alloc_cluster_link_l2() to support L2 slices, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 05/39] qcow2: Remove BDS parameter from qcow2_cache_table_release(), Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 14/39] qcow2: Add offset_to_l2_slice_index(),
Alberto Garcia <=
- [Qemu-devel] [PATCH v3 33/39] qcow2: Rename l2_table in count_contiguous_clusters(), Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 29/39] qcow2: Prepare expand_zero_clusters_in_l1() for adding L2 slice support, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 23/39] qcow2: Update handle_alloc() to support L2 slices, Alberto Garcia, 2018/01/26
- [Qemu-devel] [PATCH v3 26/39] qcow2: Prepare qcow2_update_snapshot_refcount() for adding L2 slice support, Alberto Garcia, 2018/01/26