[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
[Qemu-block] [PATCH v2 26/32] qcow2: Update qcow2_truncate() to support
From: |
Alberto Garcia |
Subject: |
[Qemu-block] [PATCH v2 26/32] qcow2: Update qcow2_truncate() to support L2 slices |
Date: |
Fri, 15 Dec 2017 13:53:54 +0100 |
The qcow2_truncate() code is mostly independent from whether
we're using L2 slices or full L2 tables, but in full and
falloc preallocation modes new L2 tables are allocated using
qcow2_alloc_cluster_link_l2(). Therefore the code needs to be
modified to ensure that all nb_clusters that are processed in each
call can be allocated with just one L2 slice.
Signed-off-by: Alberto Garcia <address@hidden>
---
block/qcow2.c | 5 +++--
1 file changed, 3 insertions(+), 2 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index c1e4bab391..38c2ccf210 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -3288,8 +3288,9 @@ static int qcow2_truncate(BlockDriverState *bs, int64_t
offset,
guest_offset = old_length;
while (nb_new_data_clusters) {
int64_t guest_cluster = guest_offset >> s->cluster_bits;
- int64_t nb_clusters = MIN(nb_new_data_clusters,
- s->l2_size - guest_cluster % s->l2_size);
+ int64_t nb_clusters = MIN(
+ nb_new_data_clusters,
+ s->l2_slice_size - guest_cluster % s->l2_slice_size);
QCowL2Meta allocation = {
.offset = guest_offset,
.alloc_offset = host_offset,
--
2.11.0
- [Qemu-block] [PATCH v2 00/32] Allow configuring the qcow2 L2 cache entry size, Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 22/32] qcow2: Update discard_single_l2() to support L2 slices, Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 14/32] qcow2: Add offset_to_l2_slice_index(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 29/32] qcow2: Rename l2_table in count_contiguous_clusters_unallocated(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 13/32] qcow2: Add l2_slice_size field to BDRVQcow2State, Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 26/32] qcow2: Update qcow2_truncate() to support L2 slices,
Alberto Garcia <=
- [Qemu-block] [PATCH v2 28/32] qcow2: Rename l2_table in count_contiguous_clusters(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 32/32] iotests: Add test for l2-cache-entry-size, Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 04/32] qcow2: Remove BDS parameter from qcow2_cache_get_table_idx(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 27/32] qcow2: Rename l2_table in qcow2_alloc_compressed_cluster_offset(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 08/32] qcow2: Remove BDS parameter from qcow2_cache_destroy(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 03/32] qcow2: Remove BDS parameter from qcow2_cache_get_table_addr(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 01/32] qcow2: Fix documentation of get_cluster_table(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 09/32] qcow2: Remove BDS parameter from qcow2_cache_clean_unused(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 11/32] qcow2: Remove BDS parameter from qcow2_cache_is_table_offset(), Alberto Garcia, 2017/12/15
- [Qemu-block] [PATCH v2 23/32] qcow2: Update zero_single_l2() to support L2 slices, Alberto Garcia, 2017/12/15