This patch prepares for the subsequent patches.
Signed-off-by: Hu Tao <hu...@cn.fujitsu.com>
---
block/qcow2.c | 6 +++---
include/block/block.h | 6 ++++++
2 files changed, 9 insertions(+), 3 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index f29aa88..32cb39f 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1614,7 +1614,7 @@ 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;
+ int prealloc = PREALLOC_OFF;
int version = 3;
Error *local_err = NULL;
int ret;
@@ -1635,9 +1635,9 @@ 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_OFF;
} else if (!strcmp(options->value.s, "metadata")) {
- prealloc = 1;
+ prealloc = PREALLOC_METADATA;
} else {
error_setg(errp, "Invalid preallocation mode: '%s'",
options->value.s);
diff --git a/include/block/block.h b/include/block/block.h
index 36efaea..3732f25 100644
--- a/include/block/block.h
+++ b/include/block/block.h
@@ -527,4 +527,10 @@ int bdrv_debug_remove_breakpoint(BlockDriverState *bs,
const char *tag);
int bdrv_debug_resume(BlockDriverState *bs, const char *tag);
bool bdrv_debug_is_suspended(BlockDriverState *bs, const char *tag);
+enum prealloc_mode {
+ PREALLOC_OFF = 0,
+ PREALLOC_METADATA,
+ PREALLOC_FULL,
+};
+
#endif
--
1.7.11.7
