To be used in the following commit without a forward declaration.
Signed-off-by: Anton Nefedov <anton.nefedov@virtuozzo.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
---
block/qcow2.c | 35 +++++++++++++++++------------------
1 file changed, 17 insertions(+), 18 deletions(-)
diff --git a/block/qcow2.c b/block/qcow2.c
index 4348b2c..2ed21ff 100644
--- a/block/qcow2.c
+++ b/block/qcow2.c
@@ -1858,6 +1858,23 @@ static bool merge_cow(uint64_t offset, unsigned bytes,
return false;
}
+static bool is_zero(BlockDriverState *bs, int64_t offset, int64_t bytes)
+{
+ int64_t nr;
+ int res;
+
+ /* Clamp to image length, before checking status of underlying sectors */
+ if (offset + bytes > bs->total_sectors * BDRV_SECTOR_SIZE) {
+ bytes = bs->total_sectors * BDRV_SECTOR_SIZE - offset;
+ }
+
+ if (!bytes) {
+ return true;
+ }
+ res = bdrv_block_status_above(bs, NULL, offset, bytes, &nr, NULL, NULL);
+ return res >= 0 && (res & BDRV_BLOCK_ZERO) && nr == bytes;
+}
+
static coroutine_fn int qcow2_co_pwritev(BlockDriverState *bs, uint64_t offset,
uint64_t bytes, QEMUIOVector *qiov,
int flags)
@@ -2975,24 +2992,6 @@ finish:
return ret;
}
-
-static bool is_zero(BlockDriverState *bs, int64_t offset, int64_t bytes)
-{
- int64_t nr;
- int res;
-
- /* Clamp to image length, before checking status of underlying sectors */
- if (offset + bytes > bs->total_sectors * BDRV_SECTOR_SIZE) {
- bytes = bs->total_sectors * BDRV_SECTOR_SIZE - offset;
- }
-
- if (!bytes) {
- return true;
- }
- res = bdrv_block_status_above(bs, NULL, offset, bytes, &nr, NULL, NULL);
- return res >= 0 && (res & BDRV_BLOCK_ZERO) && nr == bytes;
-}
-
static coroutine_fn int qcow2_co_pwrite_zeroes(BlockDriverState *bs,
int64_t offset, int bytes, BdrvRequestFlags flags)
{
--
2.7.4