This patch prepares for the subsequent patches.
Reviewed-by: Fam Zheng <f...@redhat.com>
Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
---
block/qcow2.c | 8 ++++----
qapi-schema.json | 14 ++++++++++++++
2 files changed, 18 insertions(+), 4 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 945c9d6..154c40c 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1455,7 +1455,7 @@ static int preallocate(BlockDriverState *bs)
static int qcow2_create2(const char *filename, int64_t total_size,
const char *backing_file, const char *backing_format,
- int flags, size_t cluster_size, int prealloc,
+ int flags, size_t cluster_size, PreallocMode prealloc,
QEMUOptionParameter *options, int version,
Error **errp)
{
@@ -1631,7 +1631,7 @@ static int qcow2_create(const char *filename,
QEMUOptionParameter *options,
uint64_t sectors = 0;
int flags = 0;
size_t cluster_size = DEFAULT_CLUSTER_SIZE;
- int prealloc = 0;
+ PreallocMode prealloc = PREALLOC_MODE_OFF;
int version = 3;
Error *local_err = NULL;
int ret;
@@ -1652,9 +1652,9 @@ static int qcow2_create(const char *filename,
QEMUOptionParameter *options,
}
} else if (!strcmp(options->name, BLOCK_OPT_PREALLOC)) {
if (!options->value.s || !strcmp(options->value.s, "off")) {
- prealloc = 0;
+ prealloc = PREALLOC_MODE_OFF;
} else if (!strcmp(options->value.s, "metadata")) {
- prealloc = 1;
+ prealloc = PREALLOC_MODE_METADATA;
} else {
error_setg(errp, "Invalid preallocation mode: '%s'",
options->value.s);
diff --git a/qapi-schema.json b/qapi-schema.json
index b68cd44..e798a5c 100644
--- a/qapi-schema.json
+++ b/qapi-schema.json
@@ -4686,3 +4686,17 @@
'btn' : 'InputBtnEvent',
'rel' : 'InputMoveEvent',
'abs' : 'InputMoveEvent' } }
+
+##
+# @PreallocMode
+#
+# Preallocation mode of QEMU image file
+#
+# @off: no preallocation
+# @metadata: preallocate only for metadata
+# @full: preallocate all data, including metadata
+#
+# Since 2.0
+##
+{ 'enum': 'PreallocMode',
+ 'data': [ 'off', 'metadata', 'full' ] }
--
1.8.5.2.229.g4448466
